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新增go modules支持，自行管理第三方包依赖，方便开发者使用

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2018-10-22 11:13:00 +08:00
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
*.test
# Folders
_obj
_test
.vagrant
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
coverage.txt

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language: go
go:
- 1.8.x
- 1.9.x
- 1.10.x
env:
global:
- KAFKA_PEERS=localhost:9091,localhost:9092,localhost:9093,localhost:9094,localhost:9095
- TOXIPROXY_ADDR=http://localhost:8474
- KAFKA_INSTALL_ROOT=/home/travis/kafka
- KAFKA_HOSTNAME=localhost
- DEBUG=true
matrix:
- KAFKA_VERSION=0.11.0.2
- KAFKA_VERSION=1.0.0
- KAFKA_VERSION=1.1.0
before_install:
- export REPOSITORY_ROOT=${TRAVIS_BUILD_DIR}
- vagrant/install_cluster.sh
- vagrant/boot_cluster.sh
- vagrant/create_topics.sh
install: make install_dependencies
script:
- make test
- make vet
- make errcheck
- make fmt
after_success:
- bash <(curl -s https://codecov.io/bash)
after_script: vagrant/halt_cluster.sh

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# Changelog
#### Version 1.17.0 (2018-05-30)
New Features:
- Add support for gzip compression levels
([#1044](https://github.com/Shopify/sarama/pull/1044)).
- Add support for Metadata request/response pairs versions v1 to v5
([#1047](https://github.com/Shopify/sarama/pull/1047),
[#1069](https://github.com/Shopify/sarama/pull/1069)).
- Add versioning to JoinGroup request/response pairs
([#1098](https://github.com/Shopify/sarama/pull/1098))
- Add support for CreatePartitions, DeleteGroups, DeleteRecords request/response pairs
([#1065](https://github.com/Shopify/sarama/pull/1065),
[#1096](https://github.com/Shopify/sarama/pull/1096),
[#1027](https://github.com/Shopify/sarama/pull/1027)).
- Add `Controller()` method to Client interface
([#1063](https://github.com/Shopify/sarama/pull/1063)).
Improvements:
- ConsumerMetadataReq/Resp has been migrated to FindCoordinatorReq/Resp
([#1010](https://github.com/Shopify/sarama/pull/1010)).
- Expose missing protocol parts: `msgSet` and `recordBatch`
([#1049](https://github.com/Shopify/sarama/pull/1049)).
- Add support for v1 DeleteTopics Request
([#1052](https://github.com/Shopify/sarama/pull/1052)).
- Add support for Go 1.10
([#1064](https://github.com/Shopify/sarama/pull/1064)).
- Claim support for Kafka 1.1.0
([#1073](https://github.com/Shopify/sarama/pull/1073)).
Bug Fixes:
- Fix FindCoordinatorResponse.encode to allow nil Coordinator
([#1050](https://github.com/Shopify/sarama/pull/1050),
[#1051](https://github.com/Shopify/sarama/pull/1051)).
- Clear all metadata when we have the latest topic info
([#1033](https://github.com/Shopify/sarama/pull/1033)).
- Make `PartitionConsumer.Close` idempotent
([#1092](https://github.com/Shopify/sarama/pull/1092)).
#### Version 1.16.0 (2018-02-12)
New Features:
- Add support for the Create/Delete Topics request/response pairs
([#1007](https://github.com/Shopify/sarama/pull/1007),
[#1008](https://github.com/Shopify/sarama/pull/1008)).
- Add support for the Describe/Create/Delete ACL request/response pairs
([#1009](https://github.com/Shopify/sarama/pull/1009)).
- Add support for the five transaction-related request/response pairs
([#1016](https://github.com/Shopify/sarama/pull/1016)).
Improvements:
- Permit setting version on mock producer responses
([#999](https://github.com/Shopify/sarama/pull/999)).
- Add `NewMockBrokerListener` helper for testing TLS connections
([#1019](https://github.com/Shopify/sarama/pull/1019)).
- Changed the default value for `Consumer.Fetch.Default` from 32KiB to 1MiB
which results in much higher throughput in most cases
([#1024](https://github.com/Shopify/sarama/pull/1024)).
- Reuse the `time.Ticker` across fetch requests in the PartitionConsumer to
reduce CPU and memory usage when processing many partitions
([#1028](https://github.com/Shopify/sarama/pull/1028)).
- Assign relative offsets to messages in the producer to save the brokers a
recompression pass
([#1002](https://github.com/Shopify/sarama/pull/1002),
[#1015](https://github.com/Shopify/sarama/pull/1015)).
Bug Fixes:
- Fix producing uncompressed batches with the new protocol format
([#1032](https://github.com/Shopify/sarama/issues/1032)).
- Fix consuming compacted topics with the new protocol format
([#1005](https://github.com/Shopify/sarama/issues/1005)).
- Fix consuming topics with a mix of protocol formats
([#1021](https://github.com/Shopify/sarama/issues/1021)).
- Fix consuming when the broker includes multiple batches in a single response
([#1022](https://github.com/Shopify/sarama/issues/1022)).
- Fix detection of `PartialTrailingMessage` when the partial message was
truncated before the magic value indicating its version
([#1030](https://github.com/Shopify/sarama/pull/1030)).
- Fix expectation-checking in the mock of `SyncProducer.SendMessages`
([#1035](https://github.com/Shopify/sarama/pull/1035)).
#### Version 1.15.0 (2017-12-08)
New Features:
- Claim official support for Kafka 1.0, though it did already work
([#984](https://github.com/Shopify/sarama/pull/984)).
- Helper methods for Kafka version numbers to/from strings
([#989](https://github.com/Shopify/sarama/pull/989)).
- Implement CreatePartitions request/response
([#985](https://github.com/Shopify/sarama/pull/985)).
Improvements:
- Add error codes 45-60
([#986](https://github.com/Shopify/sarama/issues/986)).
Bug Fixes:
- Fix slow consuming for certain Kafka 0.11/1.0 configurations
([#982](https://github.com/Shopify/sarama/pull/982)).
- Correctly determine when a FetchResponse contains the new message format
([#990](https://github.com/Shopify/sarama/pull/990)).
- Fix producing with multiple headers
([#996](https://github.com/Shopify/sarama/pull/996)).
- Fix handling of truncated record batches
([#998](https://github.com/Shopify/sarama/pull/998)).
- Fix leaking metrics when closing brokers
([#991](https://github.com/Shopify/sarama/pull/991)).
#### Version 1.14.0 (2017-11-13)
New Features:
- Add support for the new Kafka 0.11 record-batch format, including the wire
protocol and the necessary behavioural changes in the producer and consumer.
Transactions and idempotency are not yet supported, but producing and
consuming should work with all the existing bells and whistles (batching,
compression, etc) as well as the new custom headers. Thanks to Vlad Hanciuta
of Arista Networks for this work. Part of
([#901](https://github.com/Shopify/sarama/issues/901)).
Bug Fixes:
- Fix encoding of ProduceResponse versions in test
([#970](https://github.com/Shopify/sarama/pull/970)).
- Return partial replicas list when we have it
([#975](https://github.com/Shopify/sarama/pull/975)).
#### Version 1.13.0 (2017-10-04)
New Features:
- Support for FetchRequest version 3
([#905](https://github.com/Shopify/sarama/pull/905)).
- Permit setting version on mock FetchResponses
([#939](https://github.com/Shopify/sarama/pull/939)).
- Add a configuration option to support storing only minimal metadata for
extremely large clusters
([#937](https://github.com/Shopify/sarama/pull/937)).
- Add `PartitionOffsetManager.ResetOffset` for backtracking tracked offsets
([#932](https://github.com/Shopify/sarama/pull/932)).
Improvements:
- Provide the block-level timestamp when consuming compressed messages
([#885](https://github.com/Shopify/sarama/issues/885)).
- `Client.Replicas` and `Client.InSyncReplicas` now respect the order returned
by the broker, which can be meaningful
([#930](https://github.com/Shopify/sarama/pull/930)).
- Use a `Ticker` to reduce consumer timer overhead at the cost of higher
variance in the actual timeout
([#933](https://github.com/Shopify/sarama/pull/933)).
Bug Fixes:
- Gracefully handle messages with negative timestamps
([#907](https://github.com/Shopify/sarama/pull/907)).
- Raise a proper error when encountering an unknown message version
([#940](https://github.com/Shopify/sarama/pull/940)).
#### Version 1.12.0 (2017-05-08)
New Features:
- Added support for the `ApiVersions` request and response pair, and Kafka
version 0.10.2 ([#867](https://github.com/Shopify/sarama/pull/867)). Note
that you still need to specify the Kafka version in the Sarama configuration
for the time being.
- Added a `Brokers` method to the Client which returns the complete set of
active brokers ([#813](https://github.com/Shopify/sarama/pull/813)).
- Added an `InSyncReplicas` method to the Client which returns the set of all
in-sync broker IDs for the given partition, now that the Kafka versions for
which this was misleading are no longer in our supported set
([#872](https://github.com/Shopify/sarama/pull/872)).
- Added a `NewCustomHashPartitioner` method which allows constructing a hash
partitioner with a custom hash method in case the default (FNV-1a) is not
suitable
([#837](https://github.com/Shopify/sarama/pull/837),
[#841](https://github.com/Shopify/sarama/pull/841)).
Improvements:
- Recognize more Kafka error codes
([#859](https://github.com/Shopify/sarama/pull/859)).
Bug Fixes:
- Fix an issue where decoding a malformed FetchRequest would not return the
correct error ([#818](https://github.com/Shopify/sarama/pull/818)).
- Respect ordering of group protocols in JoinGroupRequests. This fix is
transparent if you're using the `AddGroupProtocol` or
`AddGroupProtocolMetadata` helpers; otherwise you will need to switch from
the `GroupProtocols` field (now deprecated) to use `OrderedGroupProtocols`
([#812](https://github.com/Shopify/sarama/issues/812)).
- Fix an alignment-related issue with atomics on 32-bit architectures
([#859](https://github.com/Shopify/sarama/pull/859)).
#### Version 1.11.0 (2016-12-20)
_Important:_ As of Sarama 1.11 it is necessary to set the config value of
`Producer.Return.Successes` to true in order to use the SyncProducer. Previous
versions would silently override this value when instantiating a SyncProducer
which led to unexpected values and data races.
New Features:
- Metrics! Thanks to Sébastien Launay for all his work on this feature
([#701](https://github.com/Shopify/sarama/pull/701),
[#746](https://github.com/Shopify/sarama/pull/746),
[#766](https://github.com/Shopify/sarama/pull/766)).
- Add support for LZ4 compression
([#786](https://github.com/Shopify/sarama/pull/786)).
- Add support for ListOffsetRequest v1 and Kafka 0.10.1
([#775](https://github.com/Shopify/sarama/pull/775)).
- Added a `HighWaterMarks` method to the Consumer which aggregates the
`HighWaterMarkOffset` values of its child topic/partitions
([#769](https://github.com/Shopify/sarama/pull/769)).
Bug Fixes:
- Fixed producing when using timestamps, compression and Kafka 0.10
([#759](https://github.com/Shopify/sarama/pull/759)).
- Added missing decoder methods to DescribeGroups response
([#756](https://github.com/Shopify/sarama/pull/756)).
- Fix producer shutdown when `Return.Errors` is disabled
([#787](https://github.com/Shopify/sarama/pull/787)).
- Don't mutate configuration in SyncProducer
([#790](https://github.com/Shopify/sarama/pull/790)).
- Fix crash on SASL initialization failure
([#795](https://github.com/Shopify/sarama/pull/795)).
#### Version 1.10.1 (2016-08-30)
Bug Fixes:
- Fix the documentation for `HashPartitioner` which was incorrect
([#717](https://github.com/Shopify/sarama/pull/717)).
- Permit client creation even when it is limited by ACLs
([#722](https://github.com/Shopify/sarama/pull/722)).
- Several fixes to the consumer timer optimization code, regressions introduced
in v1.10.0. Go's timers are finicky
([#730](https://github.com/Shopify/sarama/pull/730),
[#733](https://github.com/Shopify/sarama/pull/733),
[#734](https://github.com/Shopify/sarama/pull/734)).
- Handle consuming compressed relative offsets with Kafka 0.10
([#735](https://github.com/Shopify/sarama/pull/735)).
#### Version 1.10.0 (2016-08-02)
_Important:_ As of Sarama 1.10 it is necessary to tell Sarama the version of
Kafka you are running against (via the `config.Version` value) in order to use
features that may not be compatible with old Kafka versions. If you don't
specify this value it will default to 0.8.2 (the minimum supported), and trying
to use more recent features (like the offset manager) will fail with an error.
_Also:_ The offset-manager's behaviour has been changed to match the upstream
java consumer (see [#705](https://github.com/Shopify/sarama/pull/705) and
[#713](https://github.com/Shopify/sarama/pull/713)). If you use the
offset-manager, please ensure that you are committing one *greater* than the
last consumed message offset or else you may end up consuming duplicate
messages.
New Features:
- Support for Kafka 0.10
([#672](https://github.com/Shopify/sarama/pull/672),
[#678](https://github.com/Shopify/sarama/pull/678),
[#681](https://github.com/Shopify/sarama/pull/681), and others).
- Support for configuring the target Kafka version
([#676](https://github.com/Shopify/sarama/pull/676)).
- Batch producing support in the SyncProducer
([#677](https://github.com/Shopify/sarama/pull/677)).
- Extend producer mock to allow setting expectations on message contents
([#667](https://github.com/Shopify/sarama/pull/667)).
Improvements:
- Support `nil` compressed messages for deleting in compacted topics
([#634](https://github.com/Shopify/sarama/pull/634)).
- Pre-allocate decoding errors, greatly reducing heap usage and GC time against
misbehaving brokers ([#690](https://github.com/Shopify/sarama/pull/690)).
- Re-use consumer expiry timers, removing one allocation per consumed message
([#707](https://github.com/Shopify/sarama/pull/707)).
Bug Fixes:
- Actually default the client ID to "sarama" like we say we do
([#664](https://github.com/Shopify/sarama/pull/664)).
- Fix a rare issue where `Client.Leader` could return the wrong error
([#685](https://github.com/Shopify/sarama/pull/685)).
- Fix a possible tight loop in the consumer
([#693](https://github.com/Shopify/sarama/pull/693)).
- Match upstream's offset-tracking behaviour
([#705](https://github.com/Shopify/sarama/pull/705)).
- Report UnknownTopicOrPartition errors from the offset manager
([#706](https://github.com/Shopify/sarama/pull/706)).
- Fix possible negative partition value from the HashPartitioner
([#709](https://github.com/Shopify/sarama/pull/709)).
#### Version 1.9.0 (2016-05-16)
New Features:
- Add support for custom offset manager retention durations
([#602](https://github.com/Shopify/sarama/pull/602)).
- Publish low-level mocks to enable testing of third-party producer/consumer
implementations ([#570](https://github.com/Shopify/sarama/pull/570)).
- Declare support for Golang 1.6
([#611](https://github.com/Shopify/sarama/pull/611)).
- Support for SASL plain-text auth
([#648](https://github.com/Shopify/sarama/pull/648)).
Improvements:
- Simplified broker locking scheme slightly
([#604](https://github.com/Shopify/sarama/pull/604)).
- Documentation cleanup
([#605](https://github.com/Shopify/sarama/pull/605),
[#621](https://github.com/Shopify/sarama/pull/621),
[#654](https://github.com/Shopify/sarama/pull/654)).
Bug Fixes:
- Fix race condition shutting down the OffsetManager
([#658](https://github.com/Shopify/sarama/pull/658)).
#### Version 1.8.0 (2016-02-01)
New Features:
- Full support for Kafka 0.9:
- All protocol messages and fields
([#586](https://github.com/Shopify/sarama/pull/586),
[#588](https://github.com/Shopify/sarama/pull/588),
[#590](https://github.com/Shopify/sarama/pull/590)).
- Verified that TLS support works
([#581](https://github.com/Shopify/sarama/pull/581)).
- Fixed the OffsetManager compatibility
([#585](https://github.com/Shopify/sarama/pull/585)).
Improvements:
- Optimize for fewer system calls when reading from the network
([#584](https://github.com/Shopify/sarama/pull/584)).
- Automatically retry `InvalidMessage` errors to match upstream behaviour
([#589](https://github.com/Shopify/sarama/pull/589)).
#### Version 1.7.0 (2015-12-11)
New Features:
- Preliminary support for Kafka 0.9
([#572](https://github.com/Shopify/sarama/pull/572)). This comes with several
caveats:
- Protocol-layer support is mostly in place
([#577](https://github.com/Shopify/sarama/pull/577)), however Kafka 0.9
renamed some messages and fields, which we did not in order to preserve API
compatibility.
- The producer and consumer work against 0.9, but the offset manager does
not ([#573](https://github.com/Shopify/sarama/pull/573)).
- TLS support may or may not work
([#581](https://github.com/Shopify/sarama/pull/581)).
Improvements:
- Don't wait for request timeouts on dead brokers, greatly speeding recovery
when the TCP connection is left hanging
([#548](https://github.com/Shopify/sarama/pull/548)).
- Refactored part of the producer. The new version provides a much more elegant
solution to [#449](https://github.com/Shopify/sarama/pull/449). It is also
slightly more efficient, and much more precise in calculating batch sizes
when compression is used
([#549](https://github.com/Shopify/sarama/pull/549),
[#550](https://github.com/Shopify/sarama/pull/550),
[#551](https://github.com/Shopify/sarama/pull/551)).
Bug Fixes:
- Fix race condition in consumer test mock
([#553](https://github.com/Shopify/sarama/pull/553)).
#### Version 1.6.1 (2015-09-25)
Bug Fixes:
- Fix panic that could occur if a user-supplied message value failed to encode
([#449](https://github.com/Shopify/sarama/pull/449)).
#### Version 1.6.0 (2015-09-04)
New Features:
- Implementation of a consumer offset manager using the APIs introduced in
Kafka 0.8.2. The API is designed mainly for integration into a future
high-level consumer, not for direct use, although it is *possible* to use it
directly.
([#461](https://github.com/Shopify/sarama/pull/461)).
Improvements:
- CRC32 calculation is much faster on machines with SSE4.2 instructions,
removing a major hotspot from most profiles
([#255](https://github.com/Shopify/sarama/pull/255)).
Bug Fixes:
- Make protocol decoding more robust against some malformed packets generated
by go-fuzz ([#523](https://github.com/Shopify/sarama/pull/523),
[#525](https://github.com/Shopify/sarama/pull/525)) or found in other ways
([#528](https://github.com/Shopify/sarama/pull/528)).
- Fix a potential race condition panic in the consumer on shutdown
([#529](https://github.com/Shopify/sarama/pull/529)).
#### Version 1.5.0 (2015-08-17)
New Features:
- TLS-encrypted network connections are now supported. This feature is subject
to change when Kafka releases built-in TLS support, but for now this is
enough to work with TLS-terminating proxies
([#154](https://github.com/Shopify/sarama/pull/154)).
Improvements:
- The consumer will not block if a single partition is not drained by the user;
all other partitions will continue to consume normally
([#485](https://github.com/Shopify/sarama/pull/485)).
- Formatting of error strings has been much improved
([#495](https://github.com/Shopify/sarama/pull/495)).
- Internal refactoring of the producer for code cleanliness and to enable
future work ([#300](https://github.com/Shopify/sarama/pull/300)).
Bug Fixes:
- Fix a potential deadlock in the consumer on shutdown
([#475](https://github.com/Shopify/sarama/pull/475)).
#### Version 1.4.3 (2015-07-21)
Bug Fixes:
- Don't include the partitioner in the producer's "fetch partitions"
circuit-breaker ([#466](https://github.com/Shopify/sarama/pull/466)).
- Don't retry messages until the broker is closed when abandoning a broker in
the producer ([#468](https://github.com/Shopify/sarama/pull/468)).
- Update the import path for snappy-go, it has moved again and the API has
changed slightly ([#486](https://github.com/Shopify/sarama/pull/486)).
#### Version 1.4.2 (2015-05-27)
Bug Fixes:
- Update the import path for snappy-go, it has moved from google code to github
([#456](https://github.com/Shopify/sarama/pull/456)).
#### Version 1.4.1 (2015-05-25)
Improvements:
- Optimizations when decoding snappy messages, thanks to John Potocny
([#446](https://github.com/Shopify/sarama/pull/446)).
Bug Fixes:
- Fix hypothetical race conditions on producer shutdown
([#450](https://github.com/Shopify/sarama/pull/450),
[#451](https://github.com/Shopify/sarama/pull/451)).
#### Version 1.4.0 (2015-05-01)
New Features:
- The consumer now implements `Topics()` and `Partitions()` methods to enable
users to dynamically choose what topics/partitions to consume without
instantiating a full client
([#431](https://github.com/Shopify/sarama/pull/431)).
- The partition-consumer now exposes the high water mark offset value returned
by the broker via the `HighWaterMarkOffset()` method ([#339](https://github.com/Shopify/sarama/pull/339)).
- Added a `kafka-console-consumer` tool capable of handling multiple
partitions, and deprecated the now-obsolete `kafka-console-partitionConsumer`
([#439](https://github.com/Shopify/sarama/pull/439),
[#442](https://github.com/Shopify/sarama/pull/442)).
Improvements:
- The producer's logging during retry scenarios is more consistent, more
useful, and slightly less verbose
([#429](https://github.com/Shopify/sarama/pull/429)).
- The client now shuffles its initial list of seed brokers in order to prevent
thundering herd on the first broker in the list
([#441](https://github.com/Shopify/sarama/pull/441)).
Bug Fixes:
- The producer now correctly manages its state if retries occur when it is
shutting down, fixing several instances of confusing behaviour and at least
one potential deadlock ([#419](https://github.com/Shopify/sarama/pull/419)).
- The consumer now handles messages for different partitions asynchronously,
making it much more resilient to specific user code ordering
([#325](https://github.com/Shopify/sarama/pull/325)).
#### Version 1.3.0 (2015-04-16)
New Features:
- The client now tracks consumer group coordinators using
ConsumerMetadataRequests similar to how it tracks partition leadership using
regular MetadataRequests ([#411](https://github.com/Shopify/sarama/pull/411)).
This adds two methods to the client API:
- `Coordinator(consumerGroup string) (*Broker, error)`
- `RefreshCoordinator(consumerGroup string) error`
Improvements:
- ConsumerMetadataResponses now automatically create a Broker object out of the
ID/address/port combination for the Coordinator; accessing the fields
individually has been deprecated
([#413](https://github.com/Shopify/sarama/pull/413)).
- Much improved handling of `OffsetOutOfRange` errors in the consumer.
Consumers will fail to start if the provided offset is out of range
([#418](https://github.com/Shopify/sarama/pull/418))
and they will automatically shut down if the offset falls out of range
([#424](https://github.com/Shopify/sarama/pull/424)).
- Small performance improvement in encoding and decoding protocol messages
([#427](https://github.com/Shopify/sarama/pull/427)).
Bug Fixes:
- Fix a rare race condition in the client's background metadata refresher if
it happens to be activated while the client is being closed
([#422](https://github.com/Shopify/sarama/pull/422)).
#### Version 1.2.0 (2015-04-07)
Improvements:
- The producer's behaviour when `Flush.Frequency` is set is now more intuitive
([#389](https://github.com/Shopify/sarama/pull/389)).
- The producer is now somewhat more memory-efficient during and after retrying
messages due to an improved queue implementation
([#396](https://github.com/Shopify/sarama/pull/396)).
- The consumer produces much more useful logging output when leadership
changes ([#385](https://github.com/Shopify/sarama/pull/385)).
- The client's `GetOffset` method will now automatically refresh metadata and
retry once in the event of stale information or similar
([#394](https://github.com/Shopify/sarama/pull/394)).
- Broker connections now have support for using TCP keepalives
([#407](https://github.com/Shopify/sarama/issues/407)).
Bug Fixes:
- The OffsetCommitRequest message now correctly implements all three possible
API versions ([#390](https://github.com/Shopify/sarama/pull/390),
[#400](https://github.com/Shopify/sarama/pull/400)).
#### Version 1.1.0 (2015-03-20)
Improvements:
- Wrap the producer's partitioner call in a circuit-breaker so that repeatedly
broken topics don't choke throughput
([#373](https://github.com/Shopify/sarama/pull/373)).
Bug Fixes:
- Fix the producer's internal reference counting in certain unusual scenarios
([#367](https://github.com/Shopify/sarama/pull/367)).
- Fix the consumer's internal reference counting in certain unusual scenarios
([#369](https://github.com/Shopify/sarama/pull/369)).
- Fix a condition where the producer's internal control messages could have
gotten stuck ([#368](https://github.com/Shopify/sarama/pull/368)).
- Fix an issue where invalid partition lists would be cached when asking for
metadata for a non-existant topic ([#372](https://github.com/Shopify/sarama/pull/372)).
#### Version 1.0.0 (2015-03-17)
Version 1.0.0 is the first tagged version, and is almost a complete rewrite. The primary differences with previous untagged versions are:
- The producer has been rewritten; there is now a `SyncProducer` with a blocking API, and an `AsyncProducer` that is non-blocking.
- The consumer has been rewritten to only open one connection per broker instead of one connection per partition.
- The main types of Sarama are now interfaces to make depedency injection easy; mock implementations for `Consumer`, `SyncProducer` and `AsyncProducer` are provided in the `github.com/Shopify/sarama/mocks` package.
- For most uses cases, it is no longer necessary to open a `Client`; this will be done for you.
- All the configuration values have been unified in the `Config` struct.
- Much improved test suite.

20
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Copyright (c) 2013 Shopify
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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default: fmt vet errcheck test
# Taken from https://github.com/codecov/example-go#caveat-multiple-files
test:
echo "" > coverage.txt
for d in `go list ./... | grep -v vendor`; do \
go test -p 1 -v -timeout 90s -race -coverprofile=profile.out -covermode=atomic $$d || exit 1; \
if [ -f profile.out ]; then \
cat profile.out >> coverage.txt; \
rm profile.out; \
fi \
done
vet:
go vet ./...
# See https://github.com/kisielk/errcheck/pull/141 for details on ignorepkg
errcheck:
errcheck -ignorepkg fmt github.com/Shopify/sarama/...
fmt:
@if [ -n "$$(go fmt ./...)" ]; then echo 'Please run go fmt on your code.' && exit 1; fi
install_dependencies: install_errcheck get
install_errcheck:
go get github.com/kisielk/errcheck
get:
go get -t

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sarama
======
[![GoDoc](https://godoc.org/github.com/Shopify/sarama?status.png)](https://godoc.org/github.com/Shopify/sarama)
[![Build Status](https://travis-ci.org/Shopify/sarama.svg?branch=master)](https://travis-ci.org/Shopify/sarama)
[![Coverage](https://codecov.io/gh/Shopify/sarama/branch/master/graph/badge.svg)](https://codecov.io/gh/Shopify/sarama)
Sarama is an MIT-licensed Go client library for [Apache Kafka](https://kafka.apache.org/) version 0.8 (and later).
### Getting started
- API documentation and examples are available via [godoc](https://godoc.org/github.com/Shopify/sarama).
- Mocks for testing are available in the [mocks](./mocks) subpackage.
- The [examples](./examples) directory contains more elaborate example applications.
- The [tools](./tools) directory contains command line tools that can be useful for testing, diagnostics, and instrumentation.
You might also want to look at the [Frequently Asked Questions](https://github.com/Shopify/sarama/wiki/Frequently-Asked-Questions).
### Compatibility and API stability
Sarama provides a "2 releases + 2 months" compatibility guarantee: we support
the two latest stable releases of Kafka and Go, and we provide a two month
grace period for older releases. This means we currently officially support
Go 1.8 through 1.10, and Kafka 0.11 through 1.1, although older releases are
still likely to work.
Sarama follows semantic versioning and provides API stability via the gopkg.in service.
You can import a version with a guaranteed stable API via http://gopkg.in/Shopify/sarama.v1.
A changelog is available [here](CHANGELOG.md).
### Contributing
* Get started by checking our [contribution guidelines](https://github.com/Shopify/sarama/blob/master/.github/CONTRIBUTING.md).
* Read the [Sarama wiki](https://github.com/Shopify/sarama/wiki) for more
technical and design details.
* The [Kafka Protocol Specification](https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol)
contains a wealth of useful information.
* For more general issues, there is [a google group](https://groups.google.com/forum/#!forum/kafka-clients) for Kafka client developers.
* If you have any questions, just ask!

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# -*- mode: ruby -*-
# vi: set ft=ruby :
# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"
# We have 5 * 192MB ZK processes and 5 * 320MB Kafka processes => 2560MB
MEMORY = 3072
Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
config.vm.box = "ubuntu/trusty64"
config.vm.provision :shell, path: "vagrant/provision.sh"
config.vm.network "private_network", ip: "192.168.100.67"
config.vm.provider "virtualbox" do |v|
v.memory = MEMORY
end
end

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package sarama
type Resource struct {
ResourceType AclResourceType
ResourceName string
}
func (r *Resource) encode(pe packetEncoder) error {
pe.putInt8(int8(r.ResourceType))
if err := pe.putString(r.ResourceName); err != nil {
return err
}
return nil
}
func (r *Resource) decode(pd packetDecoder, version int16) (err error) {
resourceType, err := pd.getInt8()
if err != nil {
return err
}
r.ResourceType = AclResourceType(resourceType)
if r.ResourceName, err = pd.getString(); err != nil {
return err
}
return nil
}
type Acl struct {
Principal string
Host string
Operation AclOperation
PermissionType AclPermissionType
}
func (a *Acl) encode(pe packetEncoder) error {
if err := pe.putString(a.Principal); err != nil {
return err
}
if err := pe.putString(a.Host); err != nil {
return err
}
pe.putInt8(int8(a.Operation))
pe.putInt8(int8(a.PermissionType))
return nil
}
func (a *Acl) decode(pd packetDecoder, version int16) (err error) {
if a.Principal, err = pd.getString(); err != nil {
return err
}
if a.Host, err = pd.getString(); err != nil {
return err
}
operation, err := pd.getInt8()
if err != nil {
return err
}
a.Operation = AclOperation(operation)
permissionType, err := pd.getInt8()
if err != nil {
return err
}
a.PermissionType = AclPermissionType(permissionType)
return nil
}
type ResourceAcls struct {
Resource
Acls []*Acl
}
func (r *ResourceAcls) encode(pe packetEncoder) error {
if err := r.Resource.encode(pe); err != nil {
return err
}
if err := pe.putArrayLength(len(r.Acls)); err != nil {
return err
}
for _, acl := range r.Acls {
if err := acl.encode(pe); err != nil {
return err
}
}
return nil
}
func (r *ResourceAcls) decode(pd packetDecoder, version int16) error {
if err := r.Resource.decode(pd, version); err != nil {
return err
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
r.Acls = make([]*Acl, n)
for i := 0; i < n; i++ {
r.Acls[i] = new(Acl)
if err := r.Acls[i].decode(pd, version); err != nil {
return err
}
}
return nil
}

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package sarama
type CreateAclsRequest struct {
AclCreations []*AclCreation
}
func (c *CreateAclsRequest) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(c.AclCreations)); err != nil {
return err
}
for _, aclCreation := range c.AclCreations {
if err := aclCreation.encode(pe); err != nil {
return err
}
}
return nil
}
func (c *CreateAclsRequest) decode(pd packetDecoder, version int16) (err error) {
n, err := pd.getArrayLength()
if err != nil {
return err
}
c.AclCreations = make([]*AclCreation, n)
for i := 0; i < n; i++ {
c.AclCreations[i] = new(AclCreation)
if err := c.AclCreations[i].decode(pd, version); err != nil {
return err
}
}
return nil
}
func (d *CreateAclsRequest) key() int16 {
return 30
}
func (d *CreateAclsRequest) version() int16 {
return 0
}
func (d *CreateAclsRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}
type AclCreation struct {
Resource
Acl
}
func (a *AclCreation) encode(pe packetEncoder) error {
if err := a.Resource.encode(pe); err != nil {
return err
}
if err := a.Acl.encode(pe); err != nil {
return err
}
return nil
}
func (a *AclCreation) decode(pd packetDecoder, version int16) (err error) {
if err := a.Resource.decode(pd, version); err != nil {
return err
}
if err := a.Acl.decode(pd, version); err != nil {
return err
}
return nil
}

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package sarama
import "testing"
var (
aclCreateRequest = []byte{
0, 0, 0, 1,
3, // resource type = group
0, 5, 'g', 'r', 'o', 'u', 'p',
0, 9, 'p', 'r', 'i', 'n', 'c', 'i', 'p', 'a', 'l',
0, 4, 'h', 'o', 's', 't',
2, // all
2, // deny
}
)
func TestCreateAclsRequest(t *testing.T) {
req := &CreateAclsRequest{
AclCreations: []*AclCreation{{
Resource: Resource{
ResourceType: AclResourceGroup,
ResourceName: "group",
},
Acl: Acl{
Principal: "principal",
Host: "host",
Operation: AclOperationAll,
PermissionType: AclPermissionDeny,
}},
},
}
testRequest(t, "create request", req, aclCreateRequest)
}

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package sarama
import "time"
type CreateAclsResponse struct {
ThrottleTime time.Duration
AclCreationResponses []*AclCreationResponse
}
func (c *CreateAclsResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(c.ThrottleTime / time.Millisecond))
if err := pe.putArrayLength(len(c.AclCreationResponses)); err != nil {
return err
}
for _, aclCreationResponse := range c.AclCreationResponses {
if err := aclCreationResponse.encode(pe); err != nil {
return err
}
}
return nil
}
func (c *CreateAclsResponse) decode(pd packetDecoder, version int16) (err error) {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
c.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
n, err := pd.getArrayLength()
if err != nil {
return err
}
c.AclCreationResponses = make([]*AclCreationResponse, n)
for i := 0; i < n; i++ {
c.AclCreationResponses[i] = new(AclCreationResponse)
if err := c.AclCreationResponses[i].decode(pd, version); err != nil {
return err
}
}
return nil
}
func (d *CreateAclsResponse) key() int16 {
return 30
}
func (d *CreateAclsResponse) version() int16 {
return 0
}
func (d *CreateAclsResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}
type AclCreationResponse struct {
Err KError
ErrMsg *string
}
func (a *AclCreationResponse) encode(pe packetEncoder) error {
pe.putInt16(int16(a.Err))
if err := pe.putNullableString(a.ErrMsg); err != nil {
return err
}
return nil
}
func (a *AclCreationResponse) decode(pd packetDecoder, version int16) (err error) {
kerr, err := pd.getInt16()
if err != nil {
return err
}
a.Err = KError(kerr)
if a.ErrMsg, err = pd.getNullableString(); err != nil {
return err
}
return nil
}

41
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package sarama
import (
"testing"
"time"
)
var (
createResponseWithError = []byte{
0, 0, 0, 100,
0, 0, 0, 1,
0, 42,
0, 5, 'e', 'r', 'r', 'o', 'r',
}
createResponseArray = []byte{
0, 0, 0, 100,
0, 0, 0, 2,
0, 42,
0, 5, 'e', 'r', 'r', 'o', 'r',
0, 0,
255, 255,
}
)
func TestCreateAclsResponse(t *testing.T) {
errmsg := "error"
resp := &CreateAclsResponse{
ThrottleTime: 100 * time.Millisecond,
AclCreationResponses: []*AclCreationResponse{{
Err: ErrInvalidRequest,
ErrMsg: &errmsg,
}},
}
testResponse(t, "response with error", resp, createResponseWithError)
resp.AclCreationResponses = append(resp.AclCreationResponses, new(AclCreationResponse))
testResponse(t, "response array", resp, createResponseArray)
}

48
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package sarama
type DeleteAclsRequest struct {
Filters []*AclFilter
}
func (d *DeleteAclsRequest) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(d.Filters)); err != nil {
return err
}
for _, filter := range d.Filters {
if err := filter.encode(pe); err != nil {
return err
}
}
return nil
}
func (d *DeleteAclsRequest) decode(pd packetDecoder, version int16) (err error) {
n, err := pd.getArrayLength()
if err != nil {
return err
}
d.Filters = make([]*AclFilter, n)
for i := 0; i < n; i++ {
d.Filters[i] = new(AclFilter)
if err := d.Filters[i].decode(pd, version); err != nil {
return err
}
}
return nil
}
func (d *DeleteAclsRequest) key() int16 {
return 31
}
func (d *DeleteAclsRequest) version() int16 {
return 0
}
func (d *DeleteAclsRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}

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package sarama
import "testing"
var (
aclDeleteRequestNulls = []byte{
0, 0, 0, 1,
1,
255, 255,
255, 255,
255, 255,
11,
3,
}
aclDeleteRequest = []byte{
0, 0, 0, 1,
1, // any
0, 6, 'f', 'i', 'l', 't', 'e', 'r',
0, 9, 'p', 'r', 'i', 'n', 'c', 'i', 'p', 'a', 'l',
0, 4, 'h', 'o', 's', 't',
4, // write
3, // allow
}
aclDeleteRequestArray = []byte{
0, 0, 0, 2,
1,
0, 6, 'f', 'i', 'l', 't', 'e', 'r',
0, 9, 'p', 'r', 'i', 'n', 'c', 'i', 'p', 'a', 'l',
0, 4, 'h', 'o', 's', 't',
4, // write
3, // allow
2,
0, 5, 't', 'o', 'p', 'i', 'c',
255, 255,
255, 255,
6,
2,
}
)
func TestDeleteAclsRequest(t *testing.T) {
req := &DeleteAclsRequest{
Filters: []*AclFilter{{
ResourceType: AclResourceAny,
Operation: AclOperationAlterConfigs,
PermissionType: AclPermissionAllow,
}},
}
testRequest(t, "delete request nulls", req, aclDeleteRequestNulls)
req.Filters[0].ResourceName = nullString("filter")
req.Filters[0].Principal = nullString("principal")
req.Filters[0].Host = nullString("host")
req.Filters[0].Operation = AclOperationWrite
testRequest(t, "delete request", req, aclDeleteRequest)
req.Filters = append(req.Filters, &AclFilter{
ResourceType: AclResourceTopic,
ResourceName: nullString("topic"),
Operation: AclOperationDelete,
PermissionType: AclPermissionDeny,
})
testRequest(t, "delete request array", req, aclDeleteRequestArray)
}

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package sarama
import "time"
type DeleteAclsResponse struct {
ThrottleTime time.Duration
FilterResponses []*FilterResponse
}
func (a *DeleteAclsResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(a.ThrottleTime / time.Millisecond))
if err := pe.putArrayLength(len(a.FilterResponses)); err != nil {
return err
}
for _, filterResponse := range a.FilterResponses {
if err := filterResponse.encode(pe); err != nil {
return err
}
}
return nil
}
func (a *DeleteAclsResponse) decode(pd packetDecoder, version int16) (err error) {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
a.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
n, err := pd.getArrayLength()
if err != nil {
return err
}
a.FilterResponses = make([]*FilterResponse, n)
for i := 0; i < n; i++ {
a.FilterResponses[i] = new(FilterResponse)
if err := a.FilterResponses[i].decode(pd, version); err != nil {
return err
}
}
return nil
}
func (d *DeleteAclsResponse) key() int16 {
return 31
}
func (d *DeleteAclsResponse) version() int16 {
return 0
}
func (d *DeleteAclsResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}
type FilterResponse struct {
Err KError
ErrMsg *string
MatchingAcls []*MatchingAcl
}
func (f *FilterResponse) encode(pe packetEncoder) error {
pe.putInt16(int16(f.Err))
if err := pe.putNullableString(f.ErrMsg); err != nil {
return err
}
if err := pe.putArrayLength(len(f.MatchingAcls)); err != nil {
return err
}
for _, matchingAcl := range f.MatchingAcls {
if err := matchingAcl.encode(pe); err != nil {
return err
}
}
return nil
}
func (f *FilterResponse) decode(pd packetDecoder, version int16) (err error) {
kerr, err := pd.getInt16()
if err != nil {
return err
}
f.Err = KError(kerr)
if f.ErrMsg, err = pd.getNullableString(); err != nil {
return err
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
f.MatchingAcls = make([]*MatchingAcl, n)
for i := 0; i < n; i++ {
f.MatchingAcls[i] = new(MatchingAcl)
if err := f.MatchingAcls[i].decode(pd, version); err != nil {
return err
}
}
return nil
}
type MatchingAcl struct {
Err KError
ErrMsg *string
Resource
Acl
}
func (m *MatchingAcl) encode(pe packetEncoder) error {
pe.putInt16(int16(m.Err))
if err := pe.putNullableString(m.ErrMsg); err != nil {
return err
}
if err := m.Resource.encode(pe); err != nil {
return err
}
if err := m.Acl.encode(pe); err != nil {
return err
}
return nil
}
func (m *MatchingAcl) decode(pd packetDecoder, version int16) (err error) {
kerr, err := pd.getInt16()
if err != nil {
return err
}
m.Err = KError(kerr)
if m.ErrMsg, err = pd.getNullableString(); err != nil {
return err
}
if err := m.Resource.decode(pd, version); err != nil {
return err
}
if err := m.Acl.decode(pd, version); err != nil {
return err
}
return nil
}

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package sarama
import (
"testing"
"time"
)
var (
deleteAclsResponse = []byte{
0, 0, 0, 100,
0, 0, 0, 1,
0, 0, // no error
255, 255, // no error message
0, 0, 0, 1, // 1 matching acl
0, 0, // no error
255, 255, // no error message
2, // resource type
0, 5, 't', 'o', 'p', 'i', 'c',
0, 9, 'p', 'r', 'i', 'n', 'c', 'i', 'p', 'a', 'l',
0, 4, 'h', 'o', 's', 't',
4,
3,
}
)
func TestDeleteAclsResponse(t *testing.T) {
resp := &DeleteAclsResponse{
ThrottleTime: 100 * time.Millisecond,
FilterResponses: []*FilterResponse{{
MatchingAcls: []*MatchingAcl{{
Resource: Resource{ResourceType: AclResourceTopic, ResourceName: "topic"},
Acl: Acl{Principal: "principal", Host: "host", Operation: AclOperationWrite, PermissionType: AclPermissionAllow},
}},
}},
}
testResponse(t, "", resp, deleteAclsResponse)
}

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package sarama
type DescribeAclsRequest struct {
AclFilter
}
func (d *DescribeAclsRequest) encode(pe packetEncoder) error {
return d.AclFilter.encode(pe)
}
func (d *DescribeAclsRequest) decode(pd packetDecoder, version int16) (err error) {
return d.AclFilter.decode(pd, version)
}
func (d *DescribeAclsRequest) key() int16 {
return 29
}
func (d *DescribeAclsRequest) version() int16 {
return 0
}
func (d *DescribeAclsRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}

35
third/github.com/Shopify/sarama/acl_describe_request_test.go Normal file
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package sarama
import (
"testing"
)
var (
aclDescribeRequest = []byte{
2, // resource type
0, 5, 't', 'o', 'p', 'i', 'c',
0, 9, 'p', 'r', 'i', 'n', 'c', 'i', 'p', 'a', 'l',
0, 4, 'h', 'o', 's', 't',
5, // acl operation
3, // acl permission type
}
)
func TestAclDescribeRequest(t *testing.T) {
resourcename := "topic"
principal := "principal"
host := "host"
req := &DescribeAclsRequest{
AclFilter{
ResourceType: AclResourceTopic,
ResourceName: &resourcename,
Principal: &principal,
Host: &host,
Operation: AclOperationCreate,
PermissionType: AclPermissionAllow,
},
}
testRequest(t, "", req, aclDescribeRequest)
}

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package sarama
import "time"
type DescribeAclsResponse struct {
ThrottleTime time.Duration
Err KError
ErrMsg *string
ResourceAcls []*ResourceAcls
}
func (d *DescribeAclsResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(d.ThrottleTime / time.Millisecond))
pe.putInt16(int16(d.Err))
if err := pe.putNullableString(d.ErrMsg); err != nil {
return err
}
if err := pe.putArrayLength(len(d.ResourceAcls)); err != nil {
return err
}
for _, resourceAcl := range d.ResourceAcls {
if err := resourceAcl.encode(pe); err != nil {
return err
}
}
return nil
}
func (d *DescribeAclsResponse) decode(pd packetDecoder, version int16) (err error) {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
d.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
kerr, err := pd.getInt16()
if err != nil {
return err
}
d.Err = KError(kerr)
errmsg, err := pd.getString()
if err != nil {
return err
}
if errmsg != "" {
d.ErrMsg = &errmsg
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
d.ResourceAcls = make([]*ResourceAcls, n)
for i := 0; i < n; i++ {
d.ResourceAcls[i] = new(ResourceAcls)
if err := d.ResourceAcls[i].decode(pd, version); err != nil {
return err
}
}
return nil
}
func (d *DescribeAclsResponse) key() int16 {
return 29
}
func (d *DescribeAclsResponse) version() int16 {
return 0
}
func (d *DescribeAclsResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}

45
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package sarama
import (
"testing"
"time"
)
var aclDescribeResponseError = []byte{
0, 0, 0, 100,
0, 8, // error
0, 5, 'e', 'r', 'r', 'o', 'r',
0, 0, 0, 1, // 1 resource
2, // cluster type
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0, 0, 1, // 1 acl
0, 9, 'p', 'r', 'i', 'n', 'c', 'i', 'p', 'a', 'l',
0, 4, 'h', 'o', 's', 't',
4, // write
3, // allow
}
func TestAclDescribeResponse(t *testing.T) {
errmsg := "error"
resp := &DescribeAclsResponse{
ThrottleTime: 100 * time.Millisecond,
Err: ErrBrokerNotAvailable,
ErrMsg: &errmsg,
ResourceAcls: []*ResourceAcls{{
Resource: Resource{
ResourceName: "topic",
ResourceType: AclResourceTopic,
},
Acls: []*Acl{
{
Principal: "principal",
Host: "host",
Operation: AclOperationWrite,
PermissionType: AclPermissionAllow,
},
},
}},
}
testResponse(t, "describe", resp, aclDescribeResponseError)
}

61
third/github.com/Shopify/sarama/acl_filter.go Normal file
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package sarama
type AclFilter struct {
ResourceType AclResourceType
ResourceName *string
Principal *string
Host *string
Operation AclOperation
PermissionType AclPermissionType
}
func (a *AclFilter) encode(pe packetEncoder) error {
pe.putInt8(int8(a.ResourceType))
if err := pe.putNullableString(a.ResourceName); err != nil {
return err
}
if err := pe.putNullableString(a.Principal); err != nil {
return err
}
if err := pe.putNullableString(a.Host); err != nil {
return err
}
pe.putInt8(int8(a.Operation))
pe.putInt8(int8(a.PermissionType))
return nil
}
func (a *AclFilter) decode(pd packetDecoder, version int16) (err error) {
resourceType, err := pd.getInt8()
if err != nil {
return err
}
a.ResourceType = AclResourceType(resourceType)
if a.ResourceName, err = pd.getNullableString(); err != nil {
return err
}
if a.Principal, err = pd.getNullableString(); err != nil {
return err
}
if a.Host, err = pd.getNullableString(); err != nil {
return err
}
operation, err := pd.getInt8()
if err != nil {
return err
}
a.Operation = AclOperation(operation)
permissionType, err := pd.getInt8()
if err != nil {
return err
}
a.PermissionType = AclPermissionType(permissionType)
return nil
}

42
third/github.com/Shopify/sarama/acl_types.go Normal file
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package sarama
type AclOperation int
// ref: https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/acl/AclOperation.java
const (
AclOperationUnknown AclOperation = 0
AclOperationAny AclOperation = 1
AclOperationAll AclOperation = 2
AclOperationRead AclOperation = 3
AclOperationWrite AclOperation = 4
AclOperationCreate AclOperation = 5
AclOperationDelete AclOperation = 6
AclOperationAlter AclOperation = 7
AclOperationDescribe AclOperation = 8
AclOperationClusterAction AclOperation = 9
AclOperationDescribeConfigs AclOperation = 10
AclOperationAlterConfigs AclOperation = 11
AclOperationIdempotentWrite AclOperation = 12
)
type AclPermissionType int
// ref: https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/acl/AclPermissionType.java
const (
AclPermissionUnknown AclPermissionType = 0
AclPermissionAny AclPermissionType = 1
AclPermissionDeny AclPermissionType = 2
AclPermissionAllow AclPermissionType = 3
)
type AclResourceType int
// ref: https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/resource/ResourceType.java
const (
AclResourceUnknown AclResourceType = 0
AclResourceAny AclResourceType = 1
AclResourceTopic AclResourceType = 2
AclResourceGroup AclResourceType = 3
AclResourceCluster AclResourceType = 4
AclResourceTransactionalID AclResourceType = 5
)

52
third/github.com/Shopify/sarama/add_offsets_to_txn_request.go Normal file
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package sarama
type AddOffsetsToTxnRequest struct {
TransactionalID string
ProducerID int64
ProducerEpoch int16
GroupID string
}
func (a *AddOffsetsToTxnRequest) encode(pe packetEncoder) error {
if err := pe.putString(a.TransactionalID); err != nil {
return err
}
pe.putInt64(a.ProducerID)
pe.putInt16(a.ProducerEpoch)
if err := pe.putString(a.GroupID); err != nil {
return err
}
return nil
}
func (a *AddOffsetsToTxnRequest) decode(pd packetDecoder, version int16) (err error) {
if a.TransactionalID, err = pd.getString(); err != nil {
return err
}
if a.ProducerID, err = pd.getInt64(); err != nil {
return err
}
if a.ProducerEpoch, err = pd.getInt16(); err != nil {
return err
}
if a.GroupID, err = pd.getString(); err != nil {
return err
}
return nil
}
func (a *AddOffsetsToTxnRequest) key() int16 {
return 25
}
func (a *AddOffsetsToTxnRequest) version() int16 {
return 0
}
func (a *AddOffsetsToTxnRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}

23
third/github.com/Shopify/sarama/add_offsets_to_txn_request_test.go Normal file
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package sarama
import "testing"
var (
addOffsetsToTxnRequest = []byte{
0, 3, 't', 'x', 'n',
0, 0, 0, 0, 0, 0, 31, 64,
0, 0,
0, 7, 'g', 'r', 'o', 'u', 'p', 'i', 'd',
}
)
func TestAddOffsetsToTxnRequest(t *testing.T) {
req := &AddOffsetsToTxnRequest{
TransactionalID: "txn",
ProducerID: 8000,
ProducerEpoch: 0,
GroupID: "groupid",
}
testRequest(t, "", req, addOffsetsToTxnRequest)
}

44
third/github.com/Shopify/sarama/add_offsets_to_txn_response.go Normal file
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package sarama
import (
"time"
)
type AddOffsetsToTxnResponse struct {
ThrottleTime time.Duration
Err KError
}
func (a *AddOffsetsToTxnResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(a.ThrottleTime / time.Millisecond))
pe.putInt16(int16(a.Err))
return nil
}
func (a *AddOffsetsToTxnResponse) decode(pd packetDecoder, version int16) (err error) {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
a.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
kerr, err := pd.getInt16()
if err != nil {
return err
}
a.Err = KError(kerr)
return nil
}
func (a *AddOffsetsToTxnResponse) key() int16 {
return 25
}
func (a *AddOffsetsToTxnResponse) version() int16 {
return 0
}
func (a *AddOffsetsToTxnResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}

22
third/github.com/Shopify/sarama/add_offsets_to_txn_response_test.go Normal file
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package sarama
import (
"testing"
"time"
)
var (
addOffsetsToTxnResponse = []byte{
0, 0, 0, 100,
0, 47,
}
)
func TestAddOffsetsToTxnResponse(t *testing.T) {
resp := &AddOffsetsToTxnResponse{
ThrottleTime: 100 * time.Millisecond,
Err: ErrInvalidProducerEpoch,
}
testResponse(t, "", resp, addOffsetsToTxnResponse)
}

76
third/github.com/Shopify/sarama/add_partitions_to_txn_request.go Normal file
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package sarama
type AddPartitionsToTxnRequest struct {
TransactionalID string
ProducerID int64
ProducerEpoch int16
TopicPartitions map[string][]int32
}
func (a *AddPartitionsToTxnRequest) encode(pe packetEncoder) error {
if err := pe.putString(a.TransactionalID); err != nil {
return err
}
pe.putInt64(a.ProducerID)
pe.putInt16(a.ProducerEpoch)
if err := pe.putArrayLength(len(a.TopicPartitions)); err != nil {
return err
}
for topic, partitions := range a.TopicPartitions {
if err := pe.putString(topic); err != nil {
return err
}
if err := pe.putInt32Array(partitions); err != nil {
return err
}
}
return nil
}
func (a *AddPartitionsToTxnRequest) decode(pd packetDecoder, version int16) (err error) {
if a.TransactionalID, err = pd.getString(); err != nil {
return err
}
if a.ProducerID, err = pd.getInt64(); err != nil {
return err
}
if a.ProducerEpoch, err = pd.getInt16(); err != nil {
return err
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
a.TopicPartitions = make(map[string][]int32)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
partitions, err := pd.getInt32Array()
if err != nil {
return err
}
a.TopicPartitions[topic] = partitions
}
return nil
}
func (a *AddPartitionsToTxnRequest) key() int16 {
return 24
}
func (a *AddPartitionsToTxnRequest) version() int16 {
return 0
}
func (a *AddPartitionsToTxnRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}

27
third/github.com/Shopify/sarama/add_partitions_to_txn_request_test.go Normal file
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package sarama
import "testing"
var (
addPartitionsToTxnRequest = []byte{
0, 3, 't', 'x', 'n',
0, 0, 0, 0, 0, 0, 31, 64, // ProducerID
0, 0, 0, 0, // ProducerEpoch
0, 1, // 1 topic
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0, 0, 1, 0, 0, 0, 1,
}
)
func TestAddPartitionsToTxnRequest(t *testing.T) {
req := &AddPartitionsToTxnRequest{
TransactionalID: "txn",
ProducerID: 8000,
ProducerEpoch: 0,
TopicPartitions: map[string][]int32{
"topic": []int32{1},
},
}
testRequest(t, "", req, addPartitionsToTxnRequest)
}

108
third/github.com/Shopify/sarama/add_partitions_to_txn_response.go Normal file
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package sarama
import (
"time"
)
type AddPartitionsToTxnResponse struct {
ThrottleTime time.Duration
Errors map[string][]*PartitionError
}
func (a *AddPartitionsToTxnResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(a.ThrottleTime / time.Millisecond))
if err := pe.putArrayLength(len(a.Errors)); err != nil {
return err
}
for topic, e := range a.Errors {
if err := pe.putString(topic); err != nil {
return err
}
if err := pe.putArrayLength(len(e)); err != nil {
return err
}
for _, partitionError := range e {
if err := partitionError.encode(pe); err != nil {
return err
}
}
}
return nil
}
func (a *AddPartitionsToTxnResponse) decode(pd packetDecoder, version int16) (err error) {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
a.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
n, err := pd.getArrayLength()
if err != nil {
return err
}
a.Errors = make(map[string][]*PartitionError)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
m, err := pd.getArrayLength()
if err != nil {
return err
}
a.Errors[topic] = make([]*PartitionError, m)
for j := 0; j < m; j++ {
a.Errors[topic][j] = new(PartitionError)
if err := a.Errors[topic][j].decode(pd, version); err != nil {
return err
}
}
}
return nil
}
func (a *AddPartitionsToTxnResponse) key() int16 {
return 24
}
func (a *AddPartitionsToTxnResponse) version() int16 {
return 0
}
func (a *AddPartitionsToTxnResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}
type PartitionError struct {
Partition int32
Err KError
}
func (p *PartitionError) encode(pe packetEncoder) error {
pe.putInt32(p.Partition)
pe.putInt16(int16(p.Err))
return nil
}
func (p *PartitionError) decode(pd packetDecoder, version int16) (err error) {
if p.Partition, err = pd.getInt32(); err != nil {
return err
}
kerr, err := pd.getInt16()
if err != nil {
return err
}
p.Err = KError(kerr)
return nil
}

31
third/github.com/Shopify/sarama/add_partitions_to_txn_response_test.go Normal file
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package sarama
import (
"testing"
"time"
)
var (
addPartitionsToTxnResponse = []byte{
0, 0, 0, 100,
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0, 0, 1, // 1 partition error
0, 0, 0, 2, // partition 2
0, 48, // error
}
)
func TestAddPartitionsToTxnResponse(t *testing.T) {
resp := &AddPartitionsToTxnResponse{
ThrottleTime: 100 * time.Millisecond,
Errors: map[string][]*PartitionError{
"topic": []*PartitionError{&PartitionError{
Err: ErrInvalidTxnState,
Partition: 2,
}},
},
}
testResponse(t, "", resp, addPartitionsToTxnResponse)
}

375
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package sarama
import "errors"
// ClusterAdmin is the administrative client for Kafka, which supports managing and inspecting topics,
// brokers, configurations and ACLs. The minimum broker version required is 0.10.0.0.
// Methods with stricter requirements will specify the minimum broker version required.
// You MUST call Close() on a client to avoid leaks
type ClusterAdmin interface {
// Creates a new topic. This operation is supported by brokers with version 0.10.1.0 or higher.
// It may take several seconds after CreateTopic returns success for all the brokers
// to become aware that the topic has been created. During this time, listTopics
// may not return information about the new topic.The validateOnly option is supported from version 0.10.2.0.
CreateTopic(topic string, detail *TopicDetail, validateOnly bool) error
// Delete a topic. It may take several seconds after the DeleteTopic to returns success
// and for all the brokers to become aware that the topics are gone.
// During this time, listTopics may continue to return information about the deleted topic.
// If delete.topic.enable is false on the brokers, deleteTopic will mark
// the topic for deletion, but not actually delete them.
// This operation is supported by brokers with version 0.10.1.0 or higher.
DeleteTopic(topic string) error
// Increase the number of partitions of the topics according to the corresponding values.
// If partitions are increased for a topic that has a key, the partition logic or ordering of
// the messages will be affected. It may take several seconds after this method returns
// success for all the brokers to become aware that the partitions have been created.
// During this time, ClusterAdmin#describeTopics may not return information about the
// new partitions. This operation is supported by brokers with version 1.0.0 or higher.
CreatePartitions(topic string, count int32, assignment [][]int32, validateOnly bool) error
// Delete records whose offset is smaller than the given offset of the corresponding partition.
// This operation is supported by brokers with version 0.11.0.0 or higher.
DeleteRecords(topic string, partitionOffsets map[int32]int64) error
// Get the configuration for the specified resources.
// The returned configuration includes default values and the Default is true
// can be used to distinguish them from user supplied values.
// Config entries where ReadOnly is true cannot be updated.
// The value of config entries where Sensitive is true is always nil so
// sensitive information is not disclosed.
// This operation is supported by brokers with version 0.11.0.0 or higher.
DescribeConfig(resource ConfigResource) ([]ConfigEntry, error)
// Update the configuration for the specified resources with the default options.
// This operation is supported by brokers with version 0.11.0.0 or higher.
// The resources with their configs (topic is the only resource type with configs
// that can be updated currently Updates are not transactional so they may succeed
// for some resources while fail for others. The configs for a particular resource are updated automatically.
AlterConfig(resourceType ConfigResourceType, name string, entries map[string]*string, validateOnly bool) error
// Creates access control lists (ACLs) which are bound to specific resources.
// This operation is not transactional so it may succeed for some ACLs while fail for others.
// If you attempt to add an ACL that duplicates an existing ACL, no error will be raised, but
// no changes will be made. This operation is supported by brokers with version 0.11.0.0 or higher.
CreateACL(resource Resource, acl Acl) error
// Lists access control lists (ACLs) according to the supplied filter.
// it may take some time for changes made by createAcls or deleteAcls to be reflected in the output of ListAcls
// This operation is supported by brokers with version 0.11.0.0 or higher.
ListAcls(filter AclFilter) ([]ResourceAcls, error)
// Deletes access control lists (ACLs) according to the supplied filters.
// This operation is not transactional so it may succeed for some ACLs while fail for others.
// This operation is supported by brokers with version 0.11.0.0 or higher.
DeleteACL(filter AclFilter, validateOnly bool) ([]MatchingAcl, error)
// Close shuts down the admin and closes underlying client.
Close() error
}
type clusterAdmin struct {
client Client
conf *Config
}
// NewClusterAdmin creates a new ClusterAdmin using the given broker addresses and configuration.
func NewClusterAdmin(addrs []string, conf *Config) (ClusterAdmin, error) {
client, err := NewClient(addrs, conf)
if err != nil {
return nil, err
}
//make sure we can retrieve the controller
_, err = client.Controller()
if err != nil {
return nil, err
}
ca := &clusterAdmin{
client: client,
conf: client.Config(),
}
return ca, nil
}
func (ca *clusterAdmin) Close() error {
return ca.client.Close()
}
func (ca *clusterAdmin) Controller() (*Broker, error) {
return ca.client.Controller()
}
func (ca *clusterAdmin) CreateTopic(topic string, detail *TopicDetail, validateOnly bool) error {
if topic == "" {
return ErrInvalidTopic
}
if detail == nil {
return errors.New("You must specify topic details")
}
topicDetails := make(map[string]*TopicDetail)
topicDetails[topic] = detail
request := &CreateTopicsRequest{
TopicDetails: topicDetails,
ValidateOnly: validateOnly,
}
if ca.conf.Version.IsAtLeast(V0_11_0_0) {
request.Version = 1
}
if ca.conf.Version.IsAtLeast(V1_0_0_0) {
request.Version = 2
}
b, err := ca.Controller()
if err != nil {
return err
}
rsp, err := b.CreateTopics(request)
if err != nil {
return err
}
topicErr, ok := rsp.TopicErrors[topic]
if !ok {
return ErrIncompleteResponse
}
if topicErr.Err != ErrNoError {
return topicErr.Err
}
return nil
}
func (ca *clusterAdmin) DeleteTopic(topic string) error {
if topic == "" {
return ErrInvalidTopic
}
request := &DeleteTopicsRequest{Topics: []string{topic}}
if ca.conf.Version.IsAtLeast(V0_11_0_0) {
request.Version = 1
}
b, err := ca.Controller()
if err != nil {
return err
}
rsp, err := b.DeleteTopics(request)
if err != nil {
return err
}
topicErr, ok := rsp.TopicErrorCodes[topic]
if !ok {
return ErrIncompleteResponse
}
if topicErr != ErrNoError {
return topicErr
}
return nil
}
func (ca *clusterAdmin) CreatePartitions(topic string, count int32, assignment [][]int32, validateOnly bool) error {
if topic == "" {
return ErrInvalidTopic
}
topicPartitions := make(map[string]*TopicPartition)
topicPartitions[topic] = &TopicPartition{Count: count, Assignment: assignment}
request := &CreatePartitionsRequest{
TopicPartitions: topicPartitions,
}
b, err := ca.Controller()
if err != nil {
return err
}
rsp, err := b.CreatePartitions(request)
if err != nil {
return err
}
topicErr, ok := rsp.TopicPartitionErrors[topic]
if !ok {
return ErrIncompleteResponse
}
if topicErr.Err != ErrNoError {
return topicErr.Err
}
return nil
}
func (ca *clusterAdmin) DeleteRecords(topic string, partitionOffsets map[int32]int64) error {
if topic == "" {
return ErrInvalidTopic
}
topics := make(map[string]*DeleteRecordsRequestTopic)
topics[topic] = &DeleteRecordsRequestTopic{PartitionOffsets: partitionOffsets}
request := &DeleteRecordsRequest{
Topics: topics}
b, err := ca.Controller()
if err != nil {
return err
}
rsp, err := b.DeleteRecords(request)
if err != nil {
return err
}
_, ok := rsp.Topics[topic]
if !ok {
return ErrIncompleteResponse
}
//todo since we are dealing with couple of partitions it would be good if we return slice of errors
//for each partition instead of one error
return nil
}
func (ca *clusterAdmin) DescribeConfig(resource ConfigResource) ([]ConfigEntry, error) {
var entries []ConfigEntry
var resources []*ConfigResource
resources = append(resources, &resource)
request := &DescribeConfigsRequest{
Resources: resources,
}
b, err := ca.Controller()
if err != nil {
return nil, err
}
rsp, err := b.DescribeConfigs(request)
if err != nil {
return nil, err
}
for _, rspResource := range rsp.Resources {
if rspResource.Name == resource.Name {
if rspResource.ErrorMsg != "" {
return nil, errors.New(rspResource.ErrorMsg)
}
for _, cfgEntry := range rspResource.Configs {
entries = append(entries, *cfgEntry)
}
}
}
return entries, nil
}
func (ca *clusterAdmin) AlterConfig(resourceType ConfigResourceType, name string, entries map[string]*string, validateOnly bool) error {
var resources []*AlterConfigsResource
resources = append(resources, &AlterConfigsResource{
Type: resourceType,
Name: name,
ConfigEntries: entries,
})
request := &AlterConfigsRequest{
Resources: resources,
ValidateOnly: validateOnly,
}
b, err := ca.Controller()
if err != nil {
return err
}
rsp, err := b.AlterConfigs(request)
if err != nil {
return err
}
for _, rspResource := range rsp.Resources {
if rspResource.Name == name {
if rspResource.ErrorMsg != "" {
return errors.New(rspResource.ErrorMsg)
}
}
}
return nil
}
func (ca *clusterAdmin) CreateACL(resource Resource, acl Acl) error {
var acls []*AclCreation
acls = append(acls, &AclCreation{resource, acl})
request := &CreateAclsRequest{AclCreations: acls}
b, err := ca.Controller()
if err != nil {
return err
}
_, err = b.CreateAcls(request)
return err
}
func (ca *clusterAdmin) ListAcls(filter AclFilter) ([]ResourceAcls, error) {
request := &DescribeAclsRequest{AclFilter: filter}
b, err := ca.Controller()
if err != nil {
return nil, err
}
rsp, err := b.DescribeAcls(request)
if err != nil {
return nil, err
}
var lAcls []ResourceAcls
for _, rAcl := range rsp.ResourceAcls {
lAcls = append(lAcls, *rAcl)
}
return lAcls, nil
}
func (ca *clusterAdmin) DeleteACL(filter AclFilter, validateOnly bool) ([]MatchingAcl, error) {
var filters []*AclFilter
filters = append(filters, &filter)
request := &DeleteAclsRequest{Filters: filters}
b, err := ca.Controller()
if err != nil {
return nil, err
}
rsp, err := b.DeleteAcls(request)
if err != nil {
return nil, err
}
var mAcls []MatchingAcl
for _, fr := range rsp.FilterResponses {
for _, mACL := range fr.MatchingAcls {
mAcls = append(mAcls, *mACL)
}
}
return mAcls, nil
}

501
third/github.com/Shopify/sarama/admin_test.go Normal file
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@ -0,0 +1,501 @@
package sarama
import (
"errors"
"testing"
)
func TestClusterAdmin(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
})
config := NewConfig()
config.Version = V1_0_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminInvalidController(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
})
config := NewConfig()
config.Version = V1_0_0_0
_, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err == nil {
t.Fatal(errors.New("controller not set still cluster admin was created"))
}
if err != ErrControllerNotAvailable {
t.Fatal(err)
}
}
func TestClusterAdminCreateTopic(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"CreateTopicsRequest": NewMockCreateTopicsResponse(t),
})
config := NewConfig()
config.Version = V0_10_2_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
err = admin.CreateTopic("my_topic", &TopicDetail{NumPartitions: 1, ReplicationFactor: 1}, false)
if err != nil {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminCreateTopicWithInvalidTopicDetail(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"CreateTopicsRequest": NewMockCreateTopicsResponse(t),
})
config := NewConfig()
config.Version = V0_10_2_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
err = admin.CreateTopic("my_topic", nil, false)
if err.Error() != "You must specify topic details" {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminCreateTopicWithDiffVersion(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"CreateTopicsRequest": NewMockCreateTopicsResponse(t),
})
config := NewConfig()
config.Version = V0_11_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
err = admin.CreateTopic("my_topic", &TopicDetail{NumPartitions: 1, ReplicationFactor: 1}, false)
if err != ErrInsufficientData {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminDeleteTopic(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"DeleteTopicsRequest": NewMockDeleteTopicsResponse(t),
})
config := NewConfig()
config.Version = V0_10_2_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
err = admin.DeleteTopic("my_topic")
if err != nil {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminDeleteEmptyTopic(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"DeleteTopicsRequest": NewMockDeleteTopicsResponse(t),
})
config := NewConfig()
config.Version = V0_10_2_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
err = admin.DeleteTopic("")
if err != ErrInvalidTopic {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminCreatePartitions(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"CreatePartitionsRequest": NewMockCreatePartitionsResponse(t),
})
config := NewConfig()
config.Version = V1_0_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
err = admin.CreatePartitions("my_topic", 3, nil, false)
if err != nil {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminCreatePartitionsWithDiffVersion(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"CreatePartitionsRequest": NewMockCreatePartitionsResponse(t),
})
config := NewConfig()
config.Version = V0_10_2_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
err = admin.CreatePartitions("my_topic", 3, nil, false)
if err != ErrUnsupportedVersion {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminDeleteRecords(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"DeleteRecordsRequest": NewMockDeleteRecordsResponse(t),
})
config := NewConfig()
config.Version = V1_0_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
partitionOffset := make(map[int32]int64)
partitionOffset[1] = 1000
partitionOffset[2] = 1000
partitionOffset[3] = 1000
err = admin.DeleteRecords("my_topic", partitionOffset)
if err != nil {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminDeleteRecordsWithDiffVersion(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"DeleteRecordsRequest": NewMockDeleteRecordsResponse(t),
})
config := NewConfig()
config.Version = V0_10_2_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
partitionOffset := make(map[int32]int64)
partitionOffset[1] = 1000
partitionOffset[2] = 1000
partitionOffset[3] = 1000
err = admin.DeleteRecords("my_topic", partitionOffset)
if err != ErrUnsupportedVersion {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminDescribeConfig(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"DescribeConfigsRequest": NewMockDescribeConfigsResponse(t),
})
config := NewConfig()
config.Version = V1_0_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
resource := ConfigResource{Name: "r1", Type: TopicResource, ConfigNames: []string{"my_topic"}}
entries, err := admin.DescribeConfig(resource)
if err != nil {
t.Fatal(err)
}
if len(entries) <= 0 {
t.Fatal(errors.New("no resource present"))
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminAlterConfig(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"AlterConfigsRequest": NewMockAlterConfigsResponse(t),
})
config := NewConfig()
config.Version = V1_0_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
var value string
entries := make(map[string]*string)
value = "3"
entries["ReplicationFactor"] = &value
err = admin.AlterConfig(TopicResource, "my_topic", entries, false)
if err != nil {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminCreateAcl(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"CreateAclsRequest": NewMockCreateAclsResponse(t),
})
config := NewConfig()
config.Version = V1_0_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
r := Resource{ResourceType: AclResourceTopic, ResourceName: "my_topic"}
a := Acl{Host: "localhost", Operation: AclOperationAlter, PermissionType: AclPermissionAny}
err = admin.CreateACL(r, a)
if err != nil {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminListAcls(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"DescribeAclsRequest": NewMockListAclsResponse(t),
"CreateAclsRequest": NewMockCreateAclsResponse(t),
})
config := NewConfig()
config.Version = V1_0_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
r := Resource{ResourceType: AclResourceTopic, ResourceName: "my_topic"}
a := Acl{Host: "localhost", Operation: AclOperationAlter, PermissionType: AclPermissionAny}
err = admin.CreateACL(r, a)
if err != nil {
t.Fatal(err)
}
resourceName := "my_topic"
filter := AclFilter{
ResourceType: AclResourceTopic,
Operation: AclOperationRead,
ResourceName: &resourceName,
}
rAcls, err := admin.ListAcls(filter)
if err != nil {
t.Fatal(err)
}
if len(rAcls) <= 0 {
t.Fatal("no acls present")
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}
func TestClusterAdminDeleteAcl(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(seedBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()),
"DeleteAclsRequest": NewMockDeleteAclsResponse(t),
})
config := NewConfig()
config.Version = V1_0_0_0
admin, err := NewClusterAdmin([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
resourceName := "my_topic"
filter := AclFilter{
ResourceType: AclResourceTopic,
Operation: AclOperationAlter,
ResourceName: &resourceName,
}
_, err = admin.DeleteACL(filter, false)
if err != nil {
t.Fatal(err)
}
err = admin.Close()
if err != nil {
t.Fatal(err)
}
}

120
third/github.com/Shopify/sarama/alter_configs_request.go Normal file
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package sarama
type AlterConfigsRequest struct {
Resources []*AlterConfigsResource
ValidateOnly bool
}
type AlterConfigsResource struct {
Type ConfigResourceType
Name string
ConfigEntries map[string]*string
}
func (acr *AlterConfigsRequest) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(acr.Resources)); err != nil {
return err
}
for _, r := range acr.Resources {
if err := r.encode(pe); err != nil {
return err
}
}
pe.putBool(acr.ValidateOnly)
return nil
}
func (acr *AlterConfigsRequest) decode(pd packetDecoder, version int16) error {
resourceCount, err := pd.getArrayLength()
if err != nil {
return err
}
acr.Resources = make([]*AlterConfigsResource, resourceCount)
for i := range acr.Resources {
r := &AlterConfigsResource{}
err = r.decode(pd, version)
if err != nil {
return err
}
acr.Resources[i] = r
}
validateOnly, err := pd.getBool()
if err != nil {
return err
}
acr.ValidateOnly = validateOnly
return nil
}
func (ac *AlterConfigsResource) encode(pe packetEncoder) error {
pe.putInt8(int8(ac.Type))
if err := pe.putString(ac.Name); err != nil {
return err
}
if err := pe.putArrayLength(len(ac.ConfigEntries)); err != nil {
return err
}
for configKey, configValue := range ac.ConfigEntries {
if err := pe.putString(configKey); err != nil {
return err
}
if err := pe.putNullableString(configValue); err != nil {
return err
}
}
return nil
}
func (ac *AlterConfigsResource) decode(pd packetDecoder, version int16) error {
t, err := pd.getInt8()
if err != nil {
return err
}
ac.Type = ConfigResourceType(t)
name, err := pd.getString()
if err != nil {
return err
}
ac.Name = name
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n > 0 {
ac.ConfigEntries = make(map[string]*string, n)
for i := 0; i < n; i++ {
configKey, err := pd.getString()
if err != nil {
return err
}
if ac.ConfigEntries[configKey], err = pd.getNullableString(); err != nil {
return err
}
}
}
return err
}
func (acr *AlterConfigsRequest) key() int16 {
return 33
}
func (acr *AlterConfigsRequest) version() int16 {
return 0
}
func (acr *AlterConfigsRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}

86
third/github.com/Shopify/sarama/alter_configs_request_test.go Normal file
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package sarama
import "testing"
var (
emptyAlterConfigsRequest = []byte{
0, 0, 0, 0, // 0 configs
0, // don't Validate
}
singleAlterConfigsRequest = []byte{
0, 0, 0, 1, // 1 config
2, // a topic
0, 3, 'f', 'o', 'o', // topic name: foo
0, 0, 0, 1, //1 config name
0, 10, // 10 chars
's', 'e', 'g', 'm', 'e', 'n', 't', '.', 'm', 's',
0, 4,
'1', '0', '0', '0',
0, // don't validate
}
doubleAlterConfigsRequest = []byte{
0, 0, 0, 2, // 2 config
2, // a topic
0, 3, 'f', 'o', 'o', // topic name: foo
0, 0, 0, 1, //1 config name
0, 10, // 10 chars
's', 'e', 'g', 'm', 'e', 'n', 't', '.', 'm', 's',
0, 4,
'1', '0', '0', '0',
2, // a topic
0, 3, 'b', 'a', 'r', // topic name: foo
0, 0, 0, 1, //2 config
0, 12, // 12 chars
'r', 'e', 't', 'e', 'n', 't', 'i', 'o', 'n', '.', 'm', 's',
0, 4,
'1', '0', '0', '0',
0, // don't validate
}
)
func TestAlterConfigsRequest(t *testing.T) {
var request *AlterConfigsRequest
request = &AlterConfigsRequest{
Resources: []*AlterConfigsResource{},
}
testRequest(t, "no requests", request, emptyAlterConfigsRequest)
configValue := "1000"
request = &AlterConfigsRequest{
Resources: []*AlterConfigsResource{
&AlterConfigsResource{
Type: TopicResource,
Name: "foo",
ConfigEntries: map[string]*string{
"segment.ms": &configValue,
},
},
},
}
testRequest(t, "one config", request, singleAlterConfigsRequest)
request = &AlterConfigsRequest{
Resources: []*AlterConfigsResource{
&AlterConfigsResource{
Type: TopicResource,
Name: "foo",
ConfigEntries: map[string]*string{
"segment.ms": &configValue,
},
},
&AlterConfigsResource{
Type: TopicResource,
Name: "bar",
ConfigEntries: map[string]*string{
"retention.ms": &configValue,
},
},
},
}
testRequest(t, "two configs", request, doubleAlterConfigsRequest)
}

95
third/github.com/Shopify/sarama/alter_configs_response.go Normal file
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package sarama
import "time"
type AlterConfigsResponse struct {
ThrottleTime time.Duration
Resources []*AlterConfigsResourceResponse
}
type AlterConfigsResourceResponse struct {
ErrorCode int16
ErrorMsg string
Type ConfigResourceType
Name string
}
func (ct *AlterConfigsResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(ct.ThrottleTime / time.Millisecond))
if err := pe.putArrayLength(len(ct.Resources)); err != nil {
return err
}
for i := range ct.Resources {
pe.putInt16(ct.Resources[i].ErrorCode)
err := pe.putString(ct.Resources[i].ErrorMsg)
if err != nil {
return nil
}
pe.putInt8(int8(ct.Resources[i].Type))
err = pe.putString(ct.Resources[i].Name)
if err != nil {
return nil
}
}
return nil
}
func (acr *AlterConfigsResponse) decode(pd packetDecoder, version int16) error {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
acr.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
responseCount, err := pd.getArrayLength()
if err != nil {
return err
}
acr.Resources = make([]*AlterConfigsResourceResponse, responseCount)
for i := range acr.Resources {
acr.Resources[i] = new(AlterConfigsResourceResponse)
errCode, err := pd.getInt16()
if err != nil {
return err
}
acr.Resources[i].ErrorCode = errCode
e, err := pd.getString()
if err != nil {
return err
}
acr.Resources[i].ErrorMsg = e
t, err := pd.getInt8()
if err != nil {
return err
}
acr.Resources[i].Type = ConfigResourceType(t)
name, err := pd.getString()
if err != nil {
return err
}
acr.Resources[i].Name = name
}
return nil
}
func (r *AlterConfigsResponse) key() int16 {
return 32
}
func (r *AlterConfigsResponse) version() int16 {
return 0
}
func (r *AlterConfigsResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}

45
third/github.com/Shopify/sarama/alter_configs_response_test.go Normal file
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package sarama
import (
"testing"
)
var (
alterResponseEmpty = []byte{
0, 0, 0, 0, //throttle
0, 0, 0, 0, // no configs
}
alterResponsePopulated = []byte{
0, 0, 0, 0, //throttle
0, 0, 0, 1, // response
0, 0, //errorcode
0, 0, //string
2, // topic
0, 3, 'f', 'o', 'o',
}
)
func TestAlterConfigsResponse(t *testing.T) {
var response *AlterConfigsResponse
response = &AlterConfigsResponse{
Resources: []*AlterConfigsResourceResponse{},
}
testVersionDecodable(t, "empty", response, alterResponseEmpty, 0)
if len(response.Resources) != 0 {
t.Error("Expected no groups")
}
response = &AlterConfigsResponse{
Resources: []*AlterConfigsResourceResponse{
&AlterConfigsResourceResponse{
ErrorCode: 0,
ErrorMsg: "",
Type: TopicResource,
Name: "foo",
},
},
}
testResponse(t, "response with error", response, alterResponsePopulated)
}

24
third/github.com/Shopify/sarama/api_versions_request.go Normal file
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package sarama
type ApiVersionsRequest struct {
}
func (r *ApiVersionsRequest) encode(pe packetEncoder) error {
return nil
}
func (r *ApiVersionsRequest) decode(pd packetDecoder, version int16) (err error) {
return nil
}
func (r *ApiVersionsRequest) key() int16 {
return 18
}
func (r *ApiVersionsRequest) version() int16 {
return 0
}
func (r *ApiVersionsRequest) requiredVersion() KafkaVersion {
return V0_10_0_0
}

14
third/github.com/Shopify/sarama/api_versions_request_test.go Normal file
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package sarama
import "testing"
var (
apiVersionRequest = []byte{}
)
func TestApiVersionsRequest(t *testing.T) {
var request *ApiVersionsRequest
request = new(ApiVersionsRequest)
testRequest(t, "basic", request, apiVersionRequest)
}

87
third/github.com/Shopify/sarama/api_versions_response.go Normal file
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package sarama
type ApiVersionsResponseBlock struct {
ApiKey int16
MinVersion int16
MaxVersion int16
}
func (b *ApiVersionsResponseBlock) encode(pe packetEncoder) error {
pe.putInt16(b.ApiKey)
pe.putInt16(b.MinVersion)
pe.putInt16(b.MaxVersion)
return nil
}
func (b *ApiVersionsResponseBlock) decode(pd packetDecoder) error {
var err error
if b.ApiKey, err = pd.getInt16(); err != nil {
return err
}
if b.MinVersion, err = pd.getInt16(); err != nil {
return err
}
if b.MaxVersion, err = pd.getInt16(); err != nil {
return err
}
return nil
}
type ApiVersionsResponse struct {
Err KError
ApiVersions []*ApiVersionsResponseBlock
}
func (r *ApiVersionsResponse) encode(pe packetEncoder) error {
pe.putInt16(int16(r.Err))
if err := pe.putArrayLength(len(r.ApiVersions)); err != nil {
return err
}
for _, apiVersion := range r.ApiVersions {
if err := apiVersion.encode(pe); err != nil {
return err
}
}
return nil
}
func (r *ApiVersionsResponse) decode(pd packetDecoder, version int16) error {
kerr, err := pd.getInt16()
if err != nil {
return err
}
r.Err = KError(kerr)
numBlocks, err := pd.getArrayLength()
if err != nil {
return err
}
r.ApiVersions = make([]*ApiVersionsResponseBlock, numBlocks)
for i := 0; i < numBlocks; i++ {
block := new(ApiVersionsResponseBlock)
if err := block.decode(pd); err != nil {
return err
}
r.ApiVersions[i] = block
}
return nil
}
func (r *ApiVersionsResponse) key() int16 {
return 18
}
func (r *ApiVersionsResponse) version() int16 {
return 0
}
func (r *ApiVersionsResponse) requiredVersion() KafkaVersion {
return V0_10_0_0
}

32
third/github.com/Shopify/sarama/api_versions_response_test.go Normal file
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package sarama
import "testing"
var (
apiVersionResponse = []byte{
0x00, 0x00,
0x00, 0x00, 0x00, 0x01,
0x00, 0x03,
0x00, 0x02,
0x00, 0x01,
}
)
func TestApiVersionsResponse(t *testing.T) {
var response *ApiVersionsResponse
response = new(ApiVersionsResponse)
testVersionDecodable(t, "no error", response, apiVersionResponse, 0)
if response.Err != ErrNoError {
t.Error("Decoding error failed: no error expected but found", response.Err)
}
if response.ApiVersions[0].ApiKey != 0x03 {
t.Error("Decoding error: expected 0x03 but got", response.ApiVersions[0].ApiKey)
}
if response.ApiVersions[0].MinVersion != 0x02 {
t.Error("Decoding error: expected 0x02 but got", response.ApiVersions[0].MinVersion)
}
if response.ApiVersions[0].MaxVersion != 0x01 {
t.Error("Decoding error: expected 0x01 but got", response.ApiVersions[0].MaxVersion)
}
}

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third/github.com/Shopify/sarama/async_producer.go Normal file
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package sarama
import (
"encoding/binary"
"fmt"
"sync"
"time"
"gitee.com/johng/gf/third/github.com/eapache/go-resiliency/breaker"
"gitee.com/johng/gf/third/github.com/eapache/queue"
)
// AsyncProducer publishes Kafka messages using a non-blocking API. It routes messages
// to the correct broker for the provided topic-partition, refreshing metadata as appropriate,
// and parses responses for errors. You must read from the Errors() channel or the
// producer will deadlock. You must call Close() or AsyncClose() on a producer to avoid
// leaks: it will not be garbage-collected automatically when it passes out of
// scope.
type AsyncProducer interface {
// AsyncClose triggers a shutdown of the producer. The shutdown has completed
// when both the Errors and Successes channels have been closed. When calling
// AsyncClose, you *must* continue to read from those channels in order to
// drain the results of any messages in flight.
AsyncClose()
// Close shuts down the producer and waits for any buffered messages to be
// flushed. You must call this function before a producer object passes out of
// scope, as it may otherwise leak memory. You must call this before calling
// Close on the underlying client.
Close() error
// Input is the input channel for the user to write messages to that they
// wish to send.
Input() chan<- *ProducerMessage
// Successes is the success output channel back to the user when Return.Successes is
// enabled. If Return.Successes is true, you MUST read from this channel or the
// Producer will deadlock. It is suggested that you send and read messages
// together in a single select statement.
Successes() <-chan *ProducerMessage
// Errors is the error output channel back to the user. You MUST read from this
// channel or the Producer will deadlock when the channel is full. Alternatively,
// you can set Producer.Return.Errors in your config to false, which prevents
// errors to be returned.
Errors() <-chan *ProducerError
}
type asyncProducer struct {
client Client
conf *Config
ownClient bool
errors chan *ProducerError
input, successes, retries chan *ProducerMessage
inFlight sync.WaitGroup
brokers map[*Broker]chan<- *ProducerMessage
brokerRefs map[chan<- *ProducerMessage]int
brokerLock sync.Mutex
}
// NewAsyncProducer creates a new AsyncProducer using the given broker addresses and configuration.
func NewAsyncProducer(addrs []string, conf *Config) (AsyncProducer, error) {
client, err := NewClient(addrs, conf)
if err != nil {
return nil, err
}
p, err := NewAsyncProducerFromClient(client)
if err != nil {
return nil, err
}
p.(*asyncProducer).ownClient = true
return p, nil
}
// NewAsyncProducerFromClient creates a new Producer using the given client. It is still
// necessary to call Close() on the underlying client when shutting down this producer.
func NewAsyncProducerFromClient(client Client) (AsyncProducer, error) {
// Check that we are not dealing with a closed Client before processing any other arguments
if client.Closed() {
return nil, ErrClosedClient
}
p := &asyncProducer{
client: client,
conf: client.Config(),
errors: make(chan *ProducerError),
input: make(chan *ProducerMessage),
successes: make(chan *ProducerMessage),
retries: make(chan *ProducerMessage),
brokers: make(map[*Broker]chan<- *ProducerMessage),
brokerRefs: make(map[chan<- *ProducerMessage]int),
}
// launch our singleton dispatchers
go withRecover(p.dispatcher)
go withRecover(p.retryHandler)
return p, nil
}
type flagSet int8
const (
syn flagSet = 1 << iota // first message from partitionProducer to brokerProducer
fin // final message from partitionProducer to brokerProducer and back
shutdown // start the shutdown process
)
// ProducerMessage is the collection of elements passed to the Producer in order to send a message.
type ProducerMessage struct {
Topic string // The Kafka topic for this message.
// The partitioning key for this message. Pre-existing Encoders include
// StringEncoder and ByteEncoder.
Key Encoder
// The actual message to store in Kafka. Pre-existing Encoders include
// StringEncoder and ByteEncoder.
Value Encoder
// The headers are key-value pairs that are transparently passed
// by Kafka between producers and consumers.
Headers []RecordHeader
// This field is used to hold arbitrary data you wish to include so it
// will be available when receiving on the Successes and Errors channels.
// Sarama completely ignores this field and is only to be used for
// pass-through data.
Metadata interface{}
// Below this point are filled in by the producer as the message is processed
// Offset is the offset of the message stored on the broker. This is only
// guaranteed to be defined if the message was successfully delivered and
// RequiredAcks is not NoResponse.
Offset int64
// Partition is the partition that the message was sent to. This is only
// guaranteed to be defined if the message was successfully delivered.
Partition int32
// Timestamp is the timestamp assigned to the message by the broker. This
// is only guaranteed to be defined if the message was successfully
// delivered, RequiredAcks is not NoResponse, and the Kafka broker is at
// least version 0.10.0.
Timestamp time.Time
retries int
flags flagSet
expectation chan *ProducerError
}
const producerMessageOverhead = 26 // the metadata overhead of CRC, flags, etc.
func (m *ProducerMessage) byteSize(version int) int {
var size int
if version >= 2 {
size = maximumRecordOverhead
for _, h := range m.Headers {
size += len(h.Key) + len(h.Value) + 2*binary.MaxVarintLen32
}
} else {
size = producerMessageOverhead
}
if m.Key != nil {
size += m.Key.Length()
}
if m.Value != nil {
size += m.Value.Length()
}
return size
}
func (m *ProducerMessage) clear() {
m.flags = 0
m.retries = 0
}
// ProducerError is the type of error generated when the producer fails to deliver a message.
// It contains the original ProducerMessage as well as the actual error value.
type ProducerError struct {
Msg *ProducerMessage
Err error
}
func (pe ProducerError) Error() string {
return fmt.Sprintf("kafka: Failed to produce message to topic %s: %s", pe.Msg.Topic, pe.Err)
}
// ProducerErrors is a type that wraps a batch of "ProducerError"s and implements the Error interface.
// It can be returned from the Producer's Close method to avoid the need to manually drain the Errors channel
// when closing a producer.
type ProducerErrors []*ProducerError
func (pe ProducerErrors) Error() string {
return fmt.Sprintf("kafka: Failed to deliver %d messages.", len(pe))
}
func (p *asyncProducer) Errors() <-chan *ProducerError {
return p.errors
}
func (p *asyncProducer) Successes() <-chan *ProducerMessage {
return p.successes
}
func (p *asyncProducer) Input() chan<- *ProducerMessage {
return p.input
}
func (p *asyncProducer) Close() error {
p.AsyncClose()
if p.conf.Producer.Return.Successes {
go withRecover(func() {
for range p.successes {
}
})
}
var errors ProducerErrors
if p.conf.Producer.Return.Errors {
for event := range p.errors {
errors = append(errors, event)
}
} else {
<-p.errors
}
if len(errors) > 0 {
return errors
}
return nil
}
func (p *asyncProducer) AsyncClose() {
go withRecover(p.shutdown)
}
// singleton
// dispatches messages by topic
func (p *asyncProducer) dispatcher() {
handlers := make(map[string]chan<- *ProducerMessage)
shuttingDown := false
for msg := range p.input {
if msg == nil {
Logger.Println("Something tried to send a nil message, it was ignored.")
continue
}
if msg.flags&shutdown != 0 {
shuttingDown = true
p.inFlight.Done()
continue
} else if msg.retries == 0 {
if shuttingDown {
// we can't just call returnError here because that decrements the wait group,
// which hasn't been incremented yet for this message, and shouldn't be
pErr := &ProducerError{Msg: msg, Err: ErrShuttingDown}
if p.conf.Producer.Return.Errors {
p.errors <- pErr
} else {
Logger.Println(pErr)
}
continue
}
p.inFlight.Add(1)
}
version := 1
if p.conf.Version.IsAtLeast(V0_11_0_0) {
version = 2
} else if msg.Headers != nil {
p.returnError(msg, ConfigurationError("Producing headers requires Kafka at least v0.11"))
continue
}
if msg.byteSize(version) > p.conf.Producer.MaxMessageBytes {
p.returnError(msg, ErrMessageSizeTooLarge)
continue
}
handler := handlers[msg.Topic]
if handler == nil {
handler = p.newTopicProducer(msg.Topic)
handlers[msg.Topic] = handler
}
handler <- msg
}
for _, handler := range handlers {
close(handler)
}
}
// one per topic
// partitions messages, then dispatches them by partition
type topicProducer struct {
parent *asyncProducer
topic string
input <-chan *ProducerMessage
breaker *breaker.Breaker
handlers map[int32]chan<- *ProducerMessage
partitioner Partitioner
}
func (p *asyncProducer) newTopicProducer(topic string) chan<- *ProducerMessage {
input := make(chan *ProducerMessage, p.conf.ChannelBufferSize)
tp := &topicProducer{
parent: p,
topic: topic,
input: input,
breaker: breaker.New(3, 1, 10*time.Second),
handlers: make(map[int32]chan<- *ProducerMessage),
partitioner: p.conf.Producer.Partitioner(topic),
}
go withRecover(tp.dispatch)
return input
}
func (tp *topicProducer) dispatch() {
for msg := range tp.input {
if msg.retries == 0 {
if err := tp.partitionMessage(msg); err != nil {
tp.parent.returnError(msg, err)
continue
}
}
handler := tp.handlers[msg.Partition]
if handler == nil {
handler = tp.parent.newPartitionProducer(msg.Topic, msg.Partition)
tp.handlers[msg.Partition] = handler
}
handler <- msg
}
for _, handler := range tp.handlers {
close(handler)
}
}
func (tp *topicProducer) partitionMessage(msg *ProducerMessage) error {
var partitions []int32
err := tp.breaker.Run(func() (err error) {
var requiresConsistency = false
if ep, ok := tp.partitioner.(DynamicConsistencyPartitioner); ok {
requiresConsistency = ep.MessageRequiresConsistency(msg)
} else {
requiresConsistency = tp.partitioner.RequiresConsistency()
}
if requiresConsistency {
partitions, err = tp.parent.client.Partitions(msg.Topic)
} else {
partitions, err = tp.parent.client.WritablePartitions(msg.Topic)
}
return
})
if err != nil {
return err
}
numPartitions := int32(len(partitions))
if numPartitions == 0 {
return ErrLeaderNotAvailable
}
choice, err := tp.partitioner.Partition(msg, numPartitions)
if err != nil {
return err
} else if choice < 0 || choice >= numPartitions {
return ErrInvalidPartition
}
msg.Partition = partitions[choice]
return nil
}
// one per partition per topic
// dispatches messages to the appropriate broker
// also responsible for maintaining message order during retries
type partitionProducer struct {
parent *asyncProducer
topic string
partition int32
input <-chan *ProducerMessage
leader *Broker
breaker *breaker.Breaker
output chan<- *ProducerMessage
// highWatermark tracks the "current" retry level, which is the only one where we actually let messages through,
// all other messages get buffered in retryState[msg.retries].buf to preserve ordering
// retryState[msg.retries].expectChaser simply tracks whether we've seen a fin message for a given level (and
// therefore whether our buffer is complete and safe to flush)
highWatermark int
retryState []partitionRetryState
}
type partitionRetryState struct {
buf []*ProducerMessage
expectChaser bool
}
func (p *asyncProducer) newPartitionProducer(topic string, partition int32) chan<- *ProducerMessage {
input := make(chan *ProducerMessage, p.conf.ChannelBufferSize)
pp := &partitionProducer{
parent: p,
topic: topic,
partition: partition,
input: input,
breaker: breaker.New(3, 1, 10*time.Second),
retryState: make([]partitionRetryState, p.conf.Producer.Retry.Max+1),
}
go withRecover(pp.dispatch)
return input
}
func (pp *partitionProducer) dispatch() {
// try to prefetch the leader; if this doesn't work, we'll do a proper call to `updateLeader`
// on the first message
pp.leader, _ = pp.parent.client.Leader(pp.topic, pp.partition)
if pp.leader != nil {
pp.output = pp.parent.getBrokerProducer(pp.leader)
pp.parent.inFlight.Add(1) // we're generating a syn message; track it so we don't shut down while it's still inflight
pp.output <- &ProducerMessage{Topic: pp.topic, Partition: pp.partition, flags: syn}
}
for msg := range pp.input {
if msg.retries > pp.highWatermark {
// a new, higher, retry level; handle it and then back off
pp.newHighWatermark(msg.retries)
time.Sleep(pp.parent.conf.Producer.Retry.Backoff)
} else if pp.highWatermark > 0 {
// we are retrying something (else highWatermark would be 0) but this message is not a *new* retry level
if msg.retries < pp.highWatermark {
// in fact this message is not even the current retry level, so buffer it for now (unless it's a just a fin)
if msg.flags&fin == fin {
pp.retryState[msg.retries].expectChaser = false
pp.parent.inFlight.Done() // this fin is now handled and will be garbage collected
} else {
pp.retryState[msg.retries].buf = append(pp.retryState[msg.retries].buf, msg)
}
continue
} else if msg.flags&fin == fin {
// this message is of the current retry level (msg.retries == highWatermark) and the fin flag is set,
// meaning this retry level is done and we can go down (at least) one level and flush that
pp.retryState[pp.highWatermark].expectChaser = false
pp.flushRetryBuffers()
pp.parent.inFlight.Done() // this fin is now handled and will be garbage collected
continue
}
}
// if we made it this far then the current msg contains real data, and can be sent to the next goroutine
// without breaking any of our ordering guarantees
if pp.output == nil {
if err := pp.updateLeader(); err != nil {
pp.parent.returnError(msg, err)
time.Sleep(pp.parent.conf.Producer.Retry.Backoff)
continue
}
Logger.Printf("producer/leader/%s/%d selected broker %d\n", pp.topic, pp.partition, pp.leader.ID())
}
pp.output <- msg
}
if pp.output != nil {
pp.parent.unrefBrokerProducer(pp.leader, pp.output)
}
}
func (pp *partitionProducer) newHighWatermark(hwm int) {
Logger.Printf("producer/leader/%s/%d state change to [retrying-%d]\n", pp.topic, pp.partition, hwm)
pp.highWatermark = hwm
// send off a fin so that we know when everything "in between" has made it
// back to us and we can safely flush the backlog (otherwise we risk re-ordering messages)
pp.retryState[pp.highWatermark].expectChaser = true
pp.parent.inFlight.Add(1) // we're generating a fin message; track it so we don't shut down while it's still inflight
pp.output <- &ProducerMessage{Topic: pp.topic, Partition: pp.partition, flags: fin, retries: pp.highWatermark - 1}
// a new HWM means that our current broker selection is out of date
Logger.Printf("producer/leader/%s/%d abandoning broker %d\n", pp.topic, pp.partition, pp.leader.ID())
pp.parent.unrefBrokerProducer(pp.leader, pp.output)
pp.output = nil
}
func (pp *partitionProducer) flushRetryBuffers() {
Logger.Printf("producer/leader/%s/%d state change to [flushing-%d]\n", pp.topic, pp.partition, pp.highWatermark)
for {
pp.highWatermark--
if pp.output == nil {
if err := pp.updateLeader(); err != nil {
pp.parent.returnErrors(pp.retryState[pp.highWatermark].buf, err)
goto flushDone
}
Logger.Printf("producer/leader/%s/%d selected broker %d\n", pp.topic, pp.partition, pp.leader.ID())
}
for _, msg := range pp.retryState[pp.highWatermark].buf {
pp.output <- msg
}
flushDone:
pp.retryState[pp.highWatermark].buf = nil
if pp.retryState[pp.highWatermark].expectChaser {
Logger.Printf("producer/leader/%s/%d state change to [retrying-%d]\n", pp.topic, pp.partition, pp.highWatermark)
break
} else if pp.highWatermark == 0 {
Logger.Printf("producer/leader/%s/%d state change to [normal]\n", pp.topic, pp.partition)
break
}
}
}
func (pp *partitionProducer) updateLeader() error {
return pp.breaker.Run(func() (err error) {
if err = pp.parent.client.RefreshMetadata(pp.topic); err != nil {
return err
}
if pp.leader, err = pp.parent.client.Leader(pp.topic, pp.partition); err != nil {
return err
}
pp.output = pp.parent.getBrokerProducer(pp.leader)
pp.parent.inFlight.Add(1) // we're generating a syn message; track it so we don't shut down while it's still inflight
pp.output <- &ProducerMessage{Topic: pp.topic, Partition: pp.partition, flags: syn}
return nil
})
}
// one per broker; also constructs an associated flusher
func (p *asyncProducer) newBrokerProducer(broker *Broker) chan<- *ProducerMessage {
var (
input = make(chan *ProducerMessage)
bridge = make(chan *produceSet)
responses = make(chan *brokerProducerResponse)
)
bp := &brokerProducer{
parent: p,
broker: broker,
input: input,
output: bridge,
responses: responses,
buffer: newProduceSet(p),
currentRetries: make(map[string]map[int32]error),
}
go withRecover(bp.run)
// minimal bridge to make the network response `select`able
go withRecover(func() {
for set := range bridge {
request := set.buildRequest()
response, err := broker.Produce(request)
responses <- &brokerProducerResponse{
set: set,
err: err,
res: response,
}
}
close(responses)
})
return input
}
type brokerProducerResponse struct {
set *produceSet
err error
res *ProduceResponse
}
// groups messages together into appropriately-sized batches for sending to the broker
// handles state related to retries etc
type brokerProducer struct {
parent *asyncProducer
broker *Broker
input <-chan *ProducerMessage
output chan<- *produceSet
responses <-chan *brokerProducerResponse
buffer *produceSet
timer <-chan time.Time
timerFired bool
closing error
currentRetries map[string]map[int32]error
}
func (bp *brokerProducer) run() {
var output chan<- *produceSet
Logger.Printf("producer/broker/%d starting up\n", bp.broker.ID())
for {
select {
case msg := <-bp.input:
if msg == nil {
bp.shutdown()
return
}
if msg.flags&syn == syn {
Logger.Printf("producer/broker/%d state change to [open] on %s/%d\n",
bp.broker.ID(), msg.Topic, msg.Partition)
if bp.currentRetries[msg.Topic] == nil {
bp.currentRetries[msg.Topic] = make(map[int32]error)
}
bp.currentRetries[msg.Topic][msg.Partition] = nil
bp.parent.inFlight.Done()
continue
}
if reason := bp.needsRetry(msg); reason != nil {
bp.parent.retryMessage(msg, reason)
if bp.closing == nil && msg.flags&fin == fin {
// we were retrying this partition but we can start processing again
delete(bp.currentRetries[msg.Topic], msg.Partition)
Logger.Printf("producer/broker/%d state change to [closed] on %s/%d\n",
bp.broker.ID(), msg.Topic, msg.Partition)
}
continue
}
if bp.buffer.wouldOverflow(msg) {
if err := bp.waitForSpace(msg); err != nil {
bp.parent.retryMessage(msg, err)
continue
}
}
if err := bp.buffer.add(msg); err != nil {
bp.parent.returnError(msg, err)
continue
}
if bp.parent.conf.Producer.Flush.Frequency > 0 && bp.timer == nil {
bp.timer = time.After(bp.parent.conf.Producer.Flush.Frequency)
}
case <-bp.timer:
bp.timerFired = true
case output <- bp.buffer:
bp.rollOver()
case response := <-bp.responses:
bp.handleResponse(response)
}
if bp.timerFired || bp.buffer.readyToFlush() {
output = bp.output
} else {
output = nil
}
}
}
func (bp *brokerProducer) shutdown() {
for !bp.buffer.empty() {
select {
case response := <-bp.responses:
bp.handleResponse(response)
case bp.output <- bp.buffer:
bp.rollOver()
}
}
close(bp.output)
for response := range bp.responses {
bp.handleResponse(response)
}
Logger.Printf("producer/broker/%d shut down\n", bp.broker.ID())
}
func (bp *brokerProducer) needsRetry(msg *ProducerMessage) error {
if bp.closing != nil {
return bp.closing
}
return bp.currentRetries[msg.Topic][msg.Partition]
}
func (bp *brokerProducer) waitForSpace(msg *ProducerMessage) error {
Logger.Printf("producer/broker/%d maximum request accumulated, waiting for space\n", bp.broker.ID())
for {
select {
case response := <-bp.responses:
bp.handleResponse(response)
// handling a response can change our state, so re-check some things
if reason := bp.needsRetry(msg); reason != nil {
return reason
} else if !bp.buffer.wouldOverflow(msg) {
return nil
}
case bp.output <- bp.buffer:
bp.rollOver()
return nil
}
}
}
func (bp *brokerProducer) rollOver() {
bp.timer = nil
bp.timerFired = false
bp.buffer = newProduceSet(bp.parent)
}
func (bp *brokerProducer) handleResponse(response *brokerProducerResponse) {
if response.err != nil {
bp.handleError(response.set, response.err)
} else {
bp.handleSuccess(response.set, response.res)
}
if bp.buffer.empty() {
bp.rollOver() // this can happen if the response invalidated our buffer
}
}
func (bp *brokerProducer) handleSuccess(sent *produceSet, response *ProduceResponse) {
// we iterate through the blocks in the request set, not the response, so that we notice
// if the response is missing a block completely
sent.eachPartition(func(topic string, partition int32, msgs []*ProducerMessage) {
if response == nil {
// this only happens when RequiredAcks is NoResponse, so we have to assume success
bp.parent.returnSuccesses(msgs)
return
}
block := response.GetBlock(topic, partition)
if block == nil {
bp.parent.returnErrors(msgs, ErrIncompleteResponse)
return
}
switch block.Err {
// Success
case ErrNoError:
if bp.parent.conf.Version.IsAtLeast(V0_10_0_0) && !block.Timestamp.IsZero() {
for _, msg := range msgs {
msg.Timestamp = block.Timestamp
}
}
for i, msg := range msgs {
msg.Offset = block.Offset + int64(i)
}
bp.parent.returnSuccesses(msgs)
// Retriable errors
case ErrInvalidMessage, ErrUnknownTopicOrPartition, ErrLeaderNotAvailable, ErrNotLeaderForPartition,
ErrRequestTimedOut, ErrNotEnoughReplicas, ErrNotEnoughReplicasAfterAppend:
Logger.Printf("producer/broker/%d state change to [retrying] on %s/%d because %v\n",
bp.broker.ID(), topic, partition, block.Err)
bp.currentRetries[topic][partition] = block.Err
bp.parent.retryMessages(msgs, block.Err)
bp.parent.retryMessages(bp.buffer.dropPartition(topic, partition), block.Err)
// Other non-retriable errors
default:
bp.parent.returnErrors(msgs, block.Err)
}
})
}
func (bp *brokerProducer) handleError(sent *produceSet, err error) {
switch err.(type) {
case PacketEncodingError:
sent.eachPartition(func(topic string, partition int32, msgs []*ProducerMessage) {
bp.parent.returnErrors(msgs, err)
})
default:
Logger.Printf("producer/broker/%d state change to [closing] because %s\n", bp.broker.ID(), err)
bp.parent.abandonBrokerConnection(bp.broker)
_ = bp.broker.Close()
bp.closing = err
sent.eachPartition(func(topic string, partition int32, msgs []*ProducerMessage) {
bp.parent.retryMessages(msgs, err)
})
bp.buffer.eachPartition(func(topic string, partition int32, msgs []*ProducerMessage) {
bp.parent.retryMessages(msgs, err)
})
bp.rollOver()
}
}
// singleton
// effectively a "bridge" between the flushers and the dispatcher in order to avoid deadlock
// based on https://godoc.org/github.com/eapache/channels#InfiniteChannel
func (p *asyncProducer) retryHandler() {
var msg *ProducerMessage
buf := queue.New()
for {
if buf.Length() == 0 {
msg = <-p.retries
} else {
select {
case msg = <-p.retries:
case p.input <- buf.Peek().(*ProducerMessage):
buf.Remove()
continue
}
}
if msg == nil {
return
}
buf.Add(msg)
}
}
// utility functions
func (p *asyncProducer) shutdown() {
Logger.Println("Producer shutting down.")
p.inFlight.Add(1)
p.input <- &ProducerMessage{flags: shutdown}
p.inFlight.Wait()
if p.ownClient {
err := p.client.Close()
if err != nil {
Logger.Println("producer/shutdown failed to close the embedded client:", err)
}
}
close(p.input)
close(p.retries)
close(p.errors)
close(p.successes)
}
func (p *asyncProducer) returnError(msg *ProducerMessage, err error) {
msg.clear()
pErr := &ProducerError{Msg: msg, Err: err}
if p.conf.Producer.Return.Errors {
p.errors <- pErr
} else {
Logger.Println(pErr)
}
p.inFlight.Done()
}
func (p *asyncProducer) returnErrors(batch []*ProducerMessage, err error) {
for _, msg := range batch {
p.returnError(msg, err)
}
}
func (p *asyncProducer) returnSuccesses(batch []*ProducerMessage) {
for _, msg := range batch {
if p.conf.Producer.Return.Successes {
msg.clear()
p.successes <- msg
}
p.inFlight.Done()
}
}
func (p *asyncProducer) retryMessage(msg *ProducerMessage, err error) {
if msg.retries >= p.conf.Producer.Retry.Max {
p.returnError(msg, err)
} else {
msg.retries++
p.retries <- msg
}
}
func (p *asyncProducer) retryMessages(batch []*ProducerMessage, err error) {
for _, msg := range batch {
p.retryMessage(msg, err)
}
}
func (p *asyncProducer) getBrokerProducer(broker *Broker) chan<- *ProducerMessage {
p.brokerLock.Lock()
defer p.brokerLock.Unlock()
bp := p.brokers[broker]
if bp == nil {
bp = p.newBrokerProducer(broker)
p.brokers[broker] = bp
p.brokerRefs[bp] = 0
}
p.brokerRefs[bp]++
return bp
}
func (p *asyncProducer) unrefBrokerProducer(broker *Broker, bp chan<- *ProducerMessage) {
p.brokerLock.Lock()
defer p.brokerLock.Unlock()
p.brokerRefs[bp]--
if p.brokerRefs[bp] == 0 {
close(bp)
delete(p.brokerRefs, bp)
if p.brokers[broker] == bp {
delete(p.brokers, broker)
}
}
}
func (p *asyncProducer) abandonBrokerConnection(broker *Broker) {
p.brokerLock.Lock()
defer p.brokerLock.Unlock()
delete(p.brokers, broker)
}

845
third/github.com/Shopify/sarama/async_producer_test.go Normal file
View File

@ -0,0 +1,845 @@
package sarama
import (
"errors"
"log"
"os"
"os/signal"
"sync"
"testing"
"time"
)
const TestMessage = "ABC THE MESSAGE"
func closeProducer(t *testing.T, p AsyncProducer) {
var wg sync.WaitGroup
p.AsyncClose()
wg.Add(2)
go func() {
for range p.Successes() {
t.Error("Unexpected message on Successes()")
}
wg.Done()
}()
go func() {
for msg := range p.Errors() {
t.Error(msg.Err)
}
wg.Done()
}()
wg.Wait()
}
func expectResults(t *testing.T, p AsyncProducer, successes, errors int) {
expect := successes + errors
for expect > 0 {
select {
case msg := <-p.Errors():
if msg.Msg.flags != 0 {
t.Error("Message had flags set")
}
errors--
expect--
if errors < 0 {
t.Error(msg.Err)
}
case msg := <-p.Successes():
if msg.flags != 0 {
t.Error("Message had flags set")
}
successes--
expect--
if successes < 0 {
t.Error("Too many successes")
}
}
}
if successes != 0 || errors != 0 {
t.Error("Unexpected successes", successes, "or errors", errors)
}
}
type testPartitioner chan *int32
func (p testPartitioner) Partition(msg *ProducerMessage, numPartitions int32) (int32, error) {
part := <-p
if part == nil {
return 0, errors.New("BOOM")
}
return *part, nil
}
func (p testPartitioner) RequiresConsistency() bool {
return true
}
func (p testPartitioner) feed(partition int32) {
p <- &partition
}
type flakyEncoder bool
func (f flakyEncoder) Length() int {
return len(TestMessage)
}
func (f flakyEncoder) Encode() ([]byte, error) {
if !bool(f) {
return nil, errors.New("flaky encoding error")
}
return []byte(TestMessage), nil
}
func TestAsyncProducer(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leader.Addr(), leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodSuccess)
config := NewConfig()
config.Producer.Flush.Messages = 10
config.Producer.Return.Successes = true
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage), Metadata: i}
}
for i := 0; i < 10; i++ {
select {
case msg := <-producer.Errors():
t.Error(msg.Err)
if msg.Msg.flags != 0 {
t.Error("Message had flags set")
}
case msg := <-producer.Successes():
if msg.flags != 0 {
t.Error("Message had flags set")
}
if msg.Metadata.(int) != i {
t.Error("Message metadata did not match")
}
case <-time.After(time.Second):
t.Errorf("Timeout waiting for msg #%d", i)
goto done
}
}
done:
closeProducer(t, producer)
leader.Close()
seedBroker.Close()
}
func TestAsyncProducerMultipleFlushes(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leader.Addr(), leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodSuccess)
leader.Returns(prodSuccess)
leader.Returns(prodSuccess)
config := NewConfig()
config.Producer.Flush.Messages = 5
config.Producer.Return.Successes = true
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for flush := 0; flush < 3; flush++ {
for i := 0; i < 5; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
expectResults(t, producer, 5, 0)
}
closeProducer(t, producer)
leader.Close()
seedBroker.Close()
}
func TestAsyncProducerMultipleBrokers(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader0 := NewMockBroker(t, 2)
leader1 := NewMockBroker(t, 3)
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leader0.Addr(), leader0.BrokerID())
metadataResponse.AddBroker(leader1.Addr(), leader1.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader0.BrokerID(), nil, nil, ErrNoError)
metadataResponse.AddTopicPartition("my_topic", 1, leader1.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
prodResponse0 := new(ProduceResponse)
prodResponse0.AddTopicPartition("my_topic", 0, ErrNoError)
leader0.Returns(prodResponse0)
prodResponse1 := new(ProduceResponse)
prodResponse1.AddTopicPartition("my_topic", 1, ErrNoError)
leader1.Returns(prodResponse1)
config := NewConfig()
config.Producer.Flush.Messages = 5
config.Producer.Return.Successes = true
config.Producer.Partitioner = NewRoundRobinPartitioner
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
expectResults(t, producer, 10, 0)
closeProducer(t, producer)
leader1.Close()
leader0.Close()
seedBroker.Close()
}
func TestAsyncProducerCustomPartitioner(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leader.Addr(), leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
prodResponse := new(ProduceResponse)
prodResponse.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodResponse)
config := NewConfig()
config.Producer.Flush.Messages = 2
config.Producer.Return.Successes = true
config.Producer.Partitioner = func(topic string) Partitioner {
p := make(testPartitioner)
go func() {
p.feed(0)
p <- nil
p <- nil
p <- nil
p.feed(0)
}()
return p
}
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for i := 0; i < 5; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
expectResults(t, producer, 2, 3)
closeProducer(t, producer)
leader.Close()
seedBroker.Close()
}
func TestAsyncProducerFailureRetry(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader1 := NewMockBroker(t, 2)
leader2 := NewMockBroker(t, 3)
metadataLeader1 := new(MetadataResponse)
metadataLeader1.AddBroker(leader1.Addr(), leader1.BrokerID())
metadataLeader1.AddTopicPartition("my_topic", 0, leader1.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataLeader1)
config := NewConfig()
config.Producer.Flush.Messages = 10
config.Producer.Return.Successes = true
config.Producer.Retry.Backoff = 0
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
seedBroker.Close()
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
prodNotLeader := new(ProduceResponse)
prodNotLeader.AddTopicPartition("my_topic", 0, ErrNotLeaderForPartition)
leader1.Returns(prodNotLeader)
metadataLeader2 := new(MetadataResponse)
metadataLeader2.AddBroker(leader2.Addr(), leader2.BrokerID())
metadataLeader2.AddTopicPartition("my_topic", 0, leader2.BrokerID(), nil, nil, ErrNoError)
leader1.Returns(metadataLeader2)
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader2.Returns(prodSuccess)
expectResults(t, producer, 10, 0)
leader1.Close()
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
leader2.Returns(prodSuccess)
expectResults(t, producer, 10, 0)
leader2.Close()
closeProducer(t, producer)
}
func TestAsyncProducerEncoderFailures(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leader.Addr(), leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodSuccess)
leader.Returns(prodSuccess)
leader.Returns(prodSuccess)
config := NewConfig()
config.Producer.Flush.Messages = 1
config.Producer.Return.Successes = true
config.Producer.Partitioner = NewManualPartitioner
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for flush := 0; flush < 3; flush++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: flakyEncoder(true), Value: flakyEncoder(false)}
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: flakyEncoder(false), Value: flakyEncoder(true)}
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: flakyEncoder(true), Value: flakyEncoder(true)}
expectResults(t, producer, 1, 2)
}
closeProducer(t, producer)
leader.Close()
seedBroker.Close()
}
// If a Kafka broker becomes unavailable and then returns back in service, then
// producer reconnects to it and continues sending messages.
func TestAsyncProducerBrokerBounce(t *testing.T) {
// Given
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
leaderAddr := leader.Addr()
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leaderAddr, leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
config := NewConfig()
config.Producer.Flush.Messages = 1
config.Producer.Return.Successes = true
config.Producer.Retry.Backoff = 0
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
leader.Returns(prodSuccess)
expectResults(t, producer, 1, 0)
// When: a broker connection gets reset by a broker (network glitch, restart, you name it).
leader.Close() // producer should get EOF
leader = NewMockBrokerAddr(t, 2, leaderAddr) // start it up again right away for giggles
seedBroker.Returns(metadataResponse) // tell it to go to broker 2 again
// Then: a produced message goes through the new broker connection.
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
leader.Returns(prodSuccess)
expectResults(t, producer, 1, 0)
closeProducer(t, producer)
seedBroker.Close()
leader.Close()
}
func TestAsyncProducerBrokerBounceWithStaleMetadata(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader1 := NewMockBroker(t, 2)
leader2 := NewMockBroker(t, 3)
metadataLeader1 := new(MetadataResponse)
metadataLeader1.AddBroker(leader1.Addr(), leader1.BrokerID())
metadataLeader1.AddTopicPartition("my_topic", 0, leader1.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataLeader1)
config := NewConfig()
config.Producer.Flush.Messages = 10
config.Producer.Return.Successes = true
config.Producer.Retry.Max = 3
config.Producer.Retry.Backoff = 0
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
leader1.Close() // producer should get EOF
seedBroker.Returns(metadataLeader1) // tell it to go to leader1 again even though it's still down
seedBroker.Returns(metadataLeader1) // tell it to go to leader1 again even though it's still down
// ok fine, tell it to go to leader2 finally
metadataLeader2 := new(MetadataResponse)
metadataLeader2.AddBroker(leader2.Addr(), leader2.BrokerID())
metadataLeader2.AddTopicPartition("my_topic", 0, leader2.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataLeader2)
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader2.Returns(prodSuccess)
expectResults(t, producer, 10, 0)
seedBroker.Close()
leader2.Close()
closeProducer(t, producer)
}
func TestAsyncProducerMultipleRetries(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader1 := NewMockBroker(t, 2)
leader2 := NewMockBroker(t, 3)
metadataLeader1 := new(MetadataResponse)
metadataLeader1.AddBroker(leader1.Addr(), leader1.BrokerID())
metadataLeader1.AddTopicPartition("my_topic", 0, leader1.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataLeader1)
config := NewConfig()
config.Producer.Flush.Messages = 10
config.Producer.Return.Successes = true
config.Producer.Retry.Max = 4
config.Producer.Retry.Backoff = 0
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
prodNotLeader := new(ProduceResponse)
prodNotLeader.AddTopicPartition("my_topic", 0, ErrNotLeaderForPartition)
leader1.Returns(prodNotLeader)
metadataLeader2 := new(MetadataResponse)
metadataLeader2.AddBroker(leader2.Addr(), leader2.BrokerID())
metadataLeader2.AddTopicPartition("my_topic", 0, leader2.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataLeader2)
leader2.Returns(prodNotLeader)
seedBroker.Returns(metadataLeader1)
leader1.Returns(prodNotLeader)
seedBroker.Returns(metadataLeader1)
leader1.Returns(prodNotLeader)
seedBroker.Returns(metadataLeader2)
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader2.Returns(prodSuccess)
expectResults(t, producer, 10, 0)
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
leader2.Returns(prodSuccess)
expectResults(t, producer, 10, 0)
seedBroker.Close()
leader1.Close()
leader2.Close()
closeProducer(t, producer)
}
func TestAsyncProducerOutOfRetries(t *testing.T) {
t.Skip("Enable once bug #294 is fixed.")
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leader.Addr(), leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
config := NewConfig()
config.Producer.Flush.Messages = 10
config.Producer.Return.Successes = true
config.Producer.Retry.Backoff = 0
config.Producer.Retry.Max = 0
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
prodNotLeader := new(ProduceResponse)
prodNotLeader.AddTopicPartition("my_topic", 0, ErrNotLeaderForPartition)
leader.Returns(prodNotLeader)
for i := 0; i < 10; i++ {
select {
case msg := <-producer.Errors():
if msg.Err != ErrNotLeaderForPartition {
t.Error(msg.Err)
}
case <-producer.Successes():
t.Error("Unexpected success")
}
}
seedBroker.Returns(metadataResponse)
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodSuccess)
expectResults(t, producer, 10, 0)
leader.Close()
seedBroker.Close()
safeClose(t, producer)
}
func TestAsyncProducerRetryWithReferenceOpen(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
leaderAddr := leader.Addr()
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leaderAddr, leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
metadataResponse.AddTopicPartition("my_topic", 1, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
config := NewConfig()
config.Producer.Return.Successes = true
config.Producer.Retry.Backoff = 0
config.Producer.Retry.Max = 1
config.Producer.Partitioner = NewRoundRobinPartitioner
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
// prime partition 0
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodSuccess)
expectResults(t, producer, 1, 0)
// prime partition 1
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
prodSuccess = new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 1, ErrNoError)
leader.Returns(prodSuccess)
expectResults(t, producer, 1, 0)
// reboot the broker (the producer will get EOF on its existing connection)
leader.Close()
leader = NewMockBrokerAddr(t, 2, leaderAddr)
// send another message on partition 0 to trigger the EOF and retry
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
// tell partition 0 to go to that broker again
seedBroker.Returns(metadataResponse)
// succeed this time
prodSuccess = new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodSuccess)
expectResults(t, producer, 1, 0)
// shutdown
closeProducer(t, producer)
seedBroker.Close()
leader.Close()
}
func TestAsyncProducerFlusherRetryCondition(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leader.Addr(), leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
metadataResponse.AddTopicPartition("my_topic", 1, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse)
config := NewConfig()
config.Producer.Flush.Messages = 5
config.Producer.Return.Successes = true
config.Producer.Retry.Backoff = 0
config.Producer.Retry.Max = 1
config.Producer.Partitioner = NewManualPartitioner
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
// prime partitions
for p := int32(0); p < 2; p++ {
for i := 0; i < 5; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage), Partition: p}
}
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", p, ErrNoError)
leader.Returns(prodSuccess)
expectResults(t, producer, 5, 0)
}
// send more messages on partition 0
for i := 0; i < 5; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage), Partition: 0}
}
prodNotLeader := new(ProduceResponse)
prodNotLeader.AddTopicPartition("my_topic", 0, ErrNotLeaderForPartition)
leader.Returns(prodNotLeader)
time.Sleep(50 * time.Millisecond)
leader.SetHandlerByMap(map[string]MockResponse{
"ProduceRequest": NewMockProduceResponse(t).
SetVersion(0).
SetError("my_topic", 0, ErrNoError),
})
// tell partition 0 to go to that broker again
seedBroker.Returns(metadataResponse)
// succeed this time
expectResults(t, producer, 5, 0)
// put five more through
for i := 0; i < 5; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage), Partition: 0}
}
expectResults(t, producer, 5, 0)
// shutdown
closeProducer(t, producer)
seedBroker.Close()
leader.Close()
}
func TestAsyncProducerRetryShutdown(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
metadataLeader := new(MetadataResponse)
metadataLeader.AddBroker(leader.Addr(), leader.BrokerID())
metadataLeader.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataLeader)
config := NewConfig()
config.Producer.Flush.Messages = 10
config.Producer.Return.Successes = true
config.Producer.Retry.Backoff = 0
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
producer.AsyncClose()
time.Sleep(5 * time.Millisecond) // let the shutdown goroutine kick in
producer.Input() <- &ProducerMessage{Topic: "FOO"}
if err := <-producer.Errors(); err.Err != ErrShuttingDown {
t.Error(err)
}
prodNotLeader := new(ProduceResponse)
prodNotLeader.AddTopicPartition("my_topic", 0, ErrNotLeaderForPartition)
leader.Returns(prodNotLeader)
seedBroker.Returns(metadataLeader)
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodSuccess)
expectResults(t, producer, 10, 0)
seedBroker.Close()
leader.Close()
// wait for the async-closed producer to shut down fully
for err := range producer.Errors() {
t.Error(err)
}
}
func TestAsyncProducerNoReturns(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
metadataLeader := new(MetadataResponse)
metadataLeader.AddBroker(leader.Addr(), leader.BrokerID())
metadataLeader.AddTopicPartition("my_topic", 0, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataLeader)
config := NewConfig()
config.Producer.Flush.Messages = 10
config.Producer.Return.Successes = false
config.Producer.Return.Errors = false
config.Producer.Retry.Backoff = 0
producer, err := NewAsyncProducer([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
for i := 0; i < 10; i++ {
producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder(TestMessage)}
}
wait := make(chan bool)
go func() {
if err := producer.Close(); err != nil {
t.Error(err)
}
close(wait)
}()
prodSuccess := new(ProduceResponse)
prodSuccess.AddTopicPartition("my_topic", 0, ErrNoError)
leader.Returns(prodSuccess)
<-wait
seedBroker.Close()
leader.Close()
}
// This example shows how to use the producer while simultaneously
// reading the Errors channel to know about any failures.
func ExampleAsyncProducer_select() {
producer, err := NewAsyncProducer([]string{"localhost:9092"}, nil)
if err != nil {
panic(err)
}
defer func() {
if err := producer.Close(); err != nil {
log.Fatalln(err)
}
}()
// Trap SIGINT to trigger a shutdown.
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt)
var enqueued, errors int
ProducerLoop:
for {
select {
case producer.Input() <- &ProducerMessage{Topic: "my_topic", Key: nil, Value: StringEncoder("testing 123")}:
enqueued++
case err := <-producer.Errors():
log.Println("Failed to produce message", err)
errors++
case <-signals:
break ProducerLoop
}
}
log.Printf("Enqueued: %d; errors: %d\n", enqueued, errors)
}
// This example shows how to use the producer with separate goroutines
// reading from the Successes and Errors channels. Note that in order
// for the Successes channel to be populated, you have to set
// config.Producer.Return.Successes to true.
func ExampleAsyncProducer_goroutines() {
config := NewConfig()
config.Producer.Return.Successes = true
producer, err := NewAsyncProducer([]string{"localhost:9092"}, config)
if err != nil {
panic(err)
}
// Trap SIGINT to trigger a graceful shutdown.
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt)
var (
wg sync.WaitGroup
enqueued, successes, errors int
)
wg.Add(1)
go func() {
defer wg.Done()
for range producer.Successes() {
successes++
}
}()
wg.Add(1)
go func() {
defer wg.Done()
for err := range producer.Errors() {
log.Println(err)
errors++
}
}()
ProducerLoop:
for {
message := &ProducerMessage{Topic: "my_topic", Value: StringEncoder("testing 123")}
select {
case producer.Input() <- message:
enqueued++
case <-signals:
producer.AsyncClose() // Trigger a shutdown of the producer.
break ProducerLoop
}
}
wg.Wait()
log.Printf("Successfully produced: %d; errors: %d\n", successes, errors)
}

883
third/github.com/Shopify/sarama/broker.go Normal file
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@ -0,0 +1,883 @@
package sarama
import (
"crypto/tls"
"encoding/binary"
"fmt"
"io"
"net"
"strconv"
"sync"
"sync/atomic"
"time"
"gitee.com/johng/gf/third/github.com/rcrowley/go-metrics"
)
// Broker represents a single Kafka broker connection. All operations on this object are entirely concurrency-safe.
type Broker struct {
id int32
addr string
rack *string
conf *Config
correlationID int32
conn net.Conn
connErr error
lock sync.Mutex
opened int32
responses chan responsePromise
done chan bool
incomingByteRate metrics.Meter
requestRate metrics.Meter
requestSize metrics.Histogram
requestLatency metrics.Histogram
outgoingByteRate metrics.Meter
responseRate metrics.Meter
responseSize metrics.Histogram
brokerIncomingByteRate metrics.Meter
brokerRequestRate metrics.Meter
brokerRequestSize metrics.Histogram
brokerRequestLatency metrics.Histogram
brokerOutgoingByteRate metrics.Meter
brokerResponseRate metrics.Meter
brokerResponseSize metrics.Histogram
}
type responsePromise struct {
requestTime time.Time
correlationID int32
packets chan []byte
errors chan error
}
// NewBroker creates and returns a Broker targeting the given host:port address.
// This does not attempt to actually connect, you have to call Open() for that.
func NewBroker(addr string) *Broker {
return &Broker{id: -1, addr: addr}
}
// Open tries to connect to the Broker if it is not already connected or connecting, but does not block
// waiting for the connection to complete. This means that any subsequent operations on the broker will
// block waiting for the connection to succeed or fail. To get the effect of a fully synchronous Open call,
// follow it by a call to Connected(). The only errors Open will return directly are ConfigurationError or
// AlreadyConnected. If conf is nil, the result of NewConfig() is used.
func (b *Broker) Open(conf *Config) error {
if !atomic.CompareAndSwapInt32(&b.opened, 0, 1) {
return ErrAlreadyConnected
}
if conf == nil {
conf = NewConfig()
}
err := conf.Validate()
if err != nil {
return err
}
b.lock.Lock()
go withRecover(func() {
defer b.lock.Unlock()
dialer := net.Dialer{
Timeout: conf.Net.DialTimeout,
KeepAlive: conf.Net.KeepAlive,
}
if conf.Net.TLS.Enable {
b.conn, b.connErr = tls.DialWithDialer(&dialer, "tcp", b.addr, conf.Net.TLS.Config)
} else {
b.conn, b.connErr = dialer.Dial("tcp", b.addr)
}
if b.connErr != nil {
Logger.Printf("Failed to connect to broker %s: %s\n", b.addr, b.connErr)
b.conn = nil
atomic.StoreInt32(&b.opened, 0)
return
}
b.conn = newBufConn(b.conn)
b.conf = conf
// Create or reuse the global metrics shared between brokers
b.incomingByteRate = metrics.GetOrRegisterMeter("incoming-byte-rate", conf.MetricRegistry)
b.requestRate = metrics.GetOrRegisterMeter("request-rate", conf.MetricRegistry)
b.requestSize = getOrRegisterHistogram("request-size", conf.MetricRegistry)
b.requestLatency = getOrRegisterHistogram("request-latency-in-ms", conf.MetricRegistry)
b.outgoingByteRate = metrics.GetOrRegisterMeter("outgoing-byte-rate", conf.MetricRegistry)
b.responseRate = metrics.GetOrRegisterMeter("response-rate", conf.MetricRegistry)
b.responseSize = getOrRegisterHistogram("response-size", conf.MetricRegistry)
// Do not gather metrics for seeded broker (only used during bootstrap) because they share
// the same id (-1) and are already exposed through the global metrics above
if b.id >= 0 {
b.brokerIncomingByteRate = getOrRegisterBrokerMeter("incoming-byte-rate", b, conf.MetricRegistry)
b.brokerRequestRate = getOrRegisterBrokerMeter("request-rate", b, conf.MetricRegistry)
b.brokerRequestSize = getOrRegisterBrokerHistogram("request-size", b, conf.MetricRegistry)
b.brokerRequestLatency = getOrRegisterBrokerHistogram("request-latency-in-ms", b, conf.MetricRegistry)
b.brokerOutgoingByteRate = getOrRegisterBrokerMeter("outgoing-byte-rate", b, conf.MetricRegistry)
b.brokerResponseRate = getOrRegisterBrokerMeter("response-rate", b, conf.MetricRegistry)
b.brokerResponseSize = getOrRegisterBrokerHistogram("response-size", b, conf.MetricRegistry)
}
if conf.Net.SASL.Enable {
b.connErr = b.sendAndReceiveSASLPlainAuth()
if b.connErr != nil {
err = b.conn.Close()
if err == nil {
Logger.Printf("Closed connection to broker %s\n", b.addr)
} else {
Logger.Printf("Error while closing connection to broker %s: %s\n", b.addr, err)
}
b.conn = nil
atomic.StoreInt32(&b.opened, 0)
return
}
}
b.done = make(chan bool)
b.responses = make(chan responsePromise, b.conf.Net.MaxOpenRequests-1)
if b.id >= 0 {
Logger.Printf("Connected to broker at %s (registered as #%d)\n", b.addr, b.id)
} else {
Logger.Printf("Connected to broker at %s (unregistered)\n", b.addr)
}
go withRecover(b.responseReceiver)
})
return nil
}
// Connected returns true if the broker is connected and false otherwise. If the broker is not
// connected but it had tried to connect, the error from that connection attempt is also returned.
func (b *Broker) Connected() (bool, error) {
b.lock.Lock()
defer b.lock.Unlock()
return b.conn != nil, b.connErr
}
func (b *Broker) Close() error {
b.lock.Lock()
defer b.lock.Unlock()
if b.conn == nil {
return ErrNotConnected
}
close(b.responses)
<-b.done
err := b.conn.Close()
b.conn = nil
b.connErr = nil
b.done = nil
b.responses = nil
if b.id >= 0 {
b.conf.MetricRegistry.Unregister(getMetricNameForBroker("incoming-byte-rate", b))
b.conf.MetricRegistry.Unregister(getMetricNameForBroker("request-rate", b))
b.conf.MetricRegistry.Unregister(getMetricNameForBroker("outgoing-byte-rate", b))
b.conf.MetricRegistry.Unregister(getMetricNameForBroker("response-rate", b))
}
if err == nil {
Logger.Printf("Closed connection to broker %s\n", b.addr)
} else {
Logger.Printf("Error while closing connection to broker %s: %s\n", b.addr, err)
}
atomic.StoreInt32(&b.opened, 0)
return err
}
// ID returns the broker ID retrieved from Kafka's metadata, or -1 if that is not known.
func (b *Broker) ID() int32 {
return b.id
}
// Addr returns the broker address as either retrieved from Kafka's metadata or passed to NewBroker.
func (b *Broker) Addr() string {
return b.addr
}
func (b *Broker) GetMetadata(request *MetadataRequest) (*MetadataResponse, error) {
response := new(MetadataResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) GetConsumerMetadata(request *ConsumerMetadataRequest) (*ConsumerMetadataResponse, error) {
response := new(ConsumerMetadataResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) FindCoordinator(request *FindCoordinatorRequest) (*FindCoordinatorResponse, error) {
response := new(FindCoordinatorResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) GetAvailableOffsets(request *OffsetRequest) (*OffsetResponse, error) {
response := new(OffsetResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) Produce(request *ProduceRequest) (*ProduceResponse, error) {
var response *ProduceResponse
var err error
if request.RequiredAcks == NoResponse {
err = b.sendAndReceive(request, nil)
} else {
response = new(ProduceResponse)
err = b.sendAndReceive(request, response)
}
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) Fetch(request *FetchRequest) (*FetchResponse, error) {
response := new(FetchResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) CommitOffset(request *OffsetCommitRequest) (*OffsetCommitResponse, error) {
response := new(OffsetCommitResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) FetchOffset(request *OffsetFetchRequest) (*OffsetFetchResponse, error) {
response := new(OffsetFetchResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) JoinGroup(request *JoinGroupRequest) (*JoinGroupResponse, error) {
response := new(JoinGroupResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) SyncGroup(request *SyncGroupRequest) (*SyncGroupResponse, error) {
response := new(SyncGroupResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) LeaveGroup(request *LeaveGroupRequest) (*LeaveGroupResponse, error) {
response := new(LeaveGroupResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) Heartbeat(request *HeartbeatRequest) (*HeartbeatResponse, error) {
response := new(HeartbeatResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) ListGroups(request *ListGroupsRequest) (*ListGroupsResponse, error) {
response := new(ListGroupsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) DescribeGroups(request *DescribeGroupsRequest) (*DescribeGroupsResponse, error) {
response := new(DescribeGroupsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) ApiVersions(request *ApiVersionsRequest) (*ApiVersionsResponse, error) {
response := new(ApiVersionsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) CreateTopics(request *CreateTopicsRequest) (*CreateTopicsResponse, error) {
response := new(CreateTopicsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) DeleteTopics(request *DeleteTopicsRequest) (*DeleteTopicsResponse, error) {
response := new(DeleteTopicsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) CreatePartitions(request *CreatePartitionsRequest) (*CreatePartitionsResponse, error) {
response := new(CreatePartitionsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) DeleteRecords(request *DeleteRecordsRequest) (*DeleteRecordsResponse, error) {
response := new(DeleteRecordsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) DescribeAcls(request *DescribeAclsRequest) (*DescribeAclsResponse, error) {
response := new(DescribeAclsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) CreateAcls(request *CreateAclsRequest) (*CreateAclsResponse, error) {
response := new(CreateAclsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) DeleteAcls(request *DeleteAclsRequest) (*DeleteAclsResponse, error) {
response := new(DeleteAclsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) InitProducerID(request *InitProducerIDRequest) (*InitProducerIDResponse, error) {
response := new(InitProducerIDResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) AddPartitionsToTxn(request *AddPartitionsToTxnRequest) (*AddPartitionsToTxnResponse, error) {
response := new(AddPartitionsToTxnResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) AddOffsetsToTxn(request *AddOffsetsToTxnRequest) (*AddOffsetsToTxnResponse, error) {
response := new(AddOffsetsToTxnResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) EndTxn(request *EndTxnRequest) (*EndTxnResponse, error) {
response := new(EndTxnResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) TxnOffsetCommit(request *TxnOffsetCommitRequest) (*TxnOffsetCommitResponse, error) {
response := new(TxnOffsetCommitResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) DescribeConfigs(request *DescribeConfigsRequest) (*DescribeConfigsResponse, error) {
response := new(DescribeConfigsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) AlterConfigs(request *AlterConfigsRequest) (*AlterConfigsResponse, error) {
response := new(AlterConfigsResponse)
err := b.sendAndReceive(request, response)
if err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) DeleteGroups(request *DeleteGroupsRequest) (*DeleteGroupsResponse, error) {
response := new(DeleteGroupsResponse)
if err := b.sendAndReceive(request, response); err != nil {
return nil, err
}
return response, nil
}
func (b *Broker) send(rb protocolBody, promiseResponse bool) (*responsePromise, error) {
b.lock.Lock()
defer b.lock.Unlock()
if b.conn == nil {
if b.connErr != nil {
return nil, b.connErr
}
return nil, ErrNotConnected
}
if !b.conf.Version.IsAtLeast(rb.requiredVersion()) {
return nil, ErrUnsupportedVersion
}
req := &request{correlationID: b.correlationID, clientID: b.conf.ClientID, body: rb}
buf, err := encode(req, b.conf.MetricRegistry)
if err != nil {
return nil, err
}
err = b.conn.SetWriteDeadline(time.Now().Add(b.conf.Net.WriteTimeout))
if err != nil {
return nil, err
}
requestTime := time.Now()
bytes, err := b.conn.Write(buf)
b.updateOutgoingCommunicationMetrics(bytes)
if err != nil {
return nil, err
}
b.correlationID++
if !promiseResponse {
// Record request latency without the response
b.updateRequestLatencyMetrics(time.Since(requestTime))
return nil, nil
}
promise := responsePromise{requestTime, req.correlationID, make(chan []byte), make(chan error)}
b.responses <- promise
return &promise, nil
}
func (b *Broker) sendAndReceive(req protocolBody, res versionedDecoder) error {
promise, err := b.send(req, res != nil)
if err != nil {
return err
}
if promise == nil {
return nil
}
select {
case buf := <-promise.packets:
return versionedDecode(buf, res, req.version())
case err = <-promise.errors:
return err
}
}
func (b *Broker) decode(pd packetDecoder, version int16) (err error) {
b.id, err = pd.getInt32()
if err != nil {
return err
}
host, err := pd.getString()
if err != nil {
return err
}
port, err := pd.getInt32()
if err != nil {
return err
}
if version >= 1 {
b.rack, err = pd.getNullableString()
if err != nil {
return err
}
}
b.addr = net.JoinHostPort(host, fmt.Sprint(port))
if _, _, err := net.SplitHostPort(b.addr); err != nil {
return err
}
return nil
}
func (b *Broker) encode(pe packetEncoder, version int16) (err error) {
host, portstr, err := net.SplitHostPort(b.addr)
if err != nil {
return err
}
port, err := strconv.Atoi(portstr)
if err != nil {
return err
}
pe.putInt32(b.id)
err = pe.putString(host)
if err != nil {
return err
}
pe.putInt32(int32(port))
if version >= 1 {
err = pe.putNullableString(b.rack)
if err != nil {
return err
}
}
return nil
}
func (b *Broker) responseReceiver() {
var dead error
header := make([]byte, 8)
for response := range b.responses {
if dead != nil {
response.errors <- dead
continue
}
err := b.conn.SetReadDeadline(time.Now().Add(b.conf.Net.ReadTimeout))
if err != nil {
dead = err
response.errors <- err
continue
}
bytesReadHeader, err := io.ReadFull(b.conn, header)
requestLatency := time.Since(response.requestTime)
if err != nil {
b.updateIncomingCommunicationMetrics(bytesReadHeader, requestLatency)
dead = err
response.errors <- err
continue
}
decodedHeader := responseHeader{}
err = decode(header, &decodedHeader)
if err != nil {
b.updateIncomingCommunicationMetrics(bytesReadHeader, requestLatency)
dead = err
response.errors <- err
continue
}
if decodedHeader.correlationID != response.correlationID {
b.updateIncomingCommunicationMetrics(bytesReadHeader, requestLatency)
// TODO if decoded ID < cur ID, discard until we catch up
// TODO if decoded ID > cur ID, save it so when cur ID catches up we have a response
dead = PacketDecodingError{fmt.Sprintf("correlation ID didn't match, wanted %d, got %d", response.correlationID, decodedHeader.correlationID)}
response.errors <- dead
continue
}
buf := make([]byte, decodedHeader.length-4)
bytesReadBody, err := io.ReadFull(b.conn, buf)
b.updateIncomingCommunicationMetrics(bytesReadHeader+bytesReadBody, requestLatency)
if err != nil {
dead = err
response.errors <- err
continue
}
response.packets <- buf
}
close(b.done)
}
func (b *Broker) sendAndReceiveSASLPlainHandshake() error {
rb := &SaslHandshakeRequest{"PLAIN"}
req := &request{correlationID: b.correlationID, clientID: b.conf.ClientID, body: rb}
buf, err := encode(req, b.conf.MetricRegistry)
if err != nil {
return err
}
err = b.conn.SetWriteDeadline(time.Now().Add(b.conf.Net.WriteTimeout))
if err != nil {
return err
}
requestTime := time.Now()
bytes, err := b.conn.Write(buf)
b.updateOutgoingCommunicationMetrics(bytes)
if err != nil {
Logger.Printf("Failed to send SASL handshake %s: %s\n", b.addr, err.Error())
return err
}
b.correlationID++
//wait for the response
header := make([]byte, 8) // response header
_, err = io.ReadFull(b.conn, header)
if err != nil {
Logger.Printf("Failed to read SASL handshake header : %s\n", err.Error())
return err
}
length := binary.BigEndian.Uint32(header[:4])
payload := make([]byte, length-4)
n, err := io.ReadFull(b.conn, payload)
if err != nil {
Logger.Printf("Failed to read SASL handshake payload : %s\n", err.Error())
return err
}
b.updateIncomingCommunicationMetrics(n+8, time.Since(requestTime))
res := &SaslHandshakeResponse{}
err = versionedDecode(payload, res, 0)
if err != nil {
Logger.Printf("Failed to parse SASL handshake : %s\n", err.Error())
return err
}
if res.Err != ErrNoError {
Logger.Printf("Invalid SASL Mechanism : %s\n", res.Err.Error())
return res.Err
}
Logger.Print("Successful SASL handshake")
return nil
}
// Kafka 0.10.0 plans to support SASL Plain and Kerberos as per PR #812 (KIP-43)/(JIRA KAFKA-3149)
// Some hosted kafka services such as IBM Message Hub already offer SASL/PLAIN auth with Kafka 0.9
//
// In SASL Plain, Kafka expects the auth header to be in the following format
// Message format (from https://tools.ietf.org/html/rfc4616):
//
// message = [authzid] UTF8NUL authcid UTF8NUL passwd
// authcid = 1*SAFE ; MUST accept up to 255 octets
// authzid = 1*SAFE ; MUST accept up to 255 octets
// passwd = 1*SAFE ; MUST accept up to 255 octets
// UTF8NUL = %x00 ; UTF-8 encoded NUL character
//
// SAFE = UTF1 / UTF2 / UTF3 / UTF4
// ;; any UTF-8 encoded Unicode character except NUL
//
// When credentials are valid, Kafka returns a 4 byte array of null characters.
// When credentials are invalid, Kafka closes the connection. This does not seem to be the ideal way
// of responding to bad credentials but thats how its being done today.
func (b *Broker) sendAndReceiveSASLPlainAuth() error {
if b.conf.Net.SASL.Handshake {
handshakeErr := b.sendAndReceiveSASLPlainHandshake()
if handshakeErr != nil {
Logger.Printf("Error while performing SASL handshake %s\n", b.addr)
return handshakeErr
}
}
length := 1 + len(b.conf.Net.SASL.User) + 1 + len(b.conf.Net.SASL.Password)
authBytes := make([]byte, length+4) //4 byte length header + auth data
binary.BigEndian.PutUint32(authBytes, uint32(length))
copy(authBytes[4:], []byte("\x00"+b.conf.Net.SASL.User+"\x00"+b.conf.Net.SASL.Password))
err := b.conn.SetWriteDeadline(time.Now().Add(b.conf.Net.WriteTimeout))
if err != nil {
Logger.Printf("Failed to set write deadline when doing SASL auth with broker %s: %s\n", b.addr, err.Error())
return err
}
requestTime := time.Now()
bytesWritten, err := b.conn.Write(authBytes)
b.updateOutgoingCommunicationMetrics(bytesWritten)
if err != nil {
Logger.Printf("Failed to write SASL auth header to broker %s: %s\n", b.addr, err.Error())
return err
}
header := make([]byte, 4)
n, err := io.ReadFull(b.conn, header)
b.updateIncomingCommunicationMetrics(n, time.Since(requestTime))
// If the credentials are valid, we would get a 4 byte response filled with null characters.
// Otherwise, the broker closes the connection and we get an EOF
if err != nil {
Logger.Printf("Failed to read response while authenticating with SASL to broker %s: %s\n", b.addr, err.Error())
return err
}
Logger.Printf("SASL authentication successful with broker %s:%v - %v\n", b.addr, n, header)
return nil
}
func (b *Broker) updateIncomingCommunicationMetrics(bytes int, requestLatency time.Duration) {
b.updateRequestLatencyMetrics(requestLatency)
b.responseRate.Mark(1)
if b.brokerResponseRate != nil {
b.brokerResponseRate.Mark(1)
}
responseSize := int64(bytes)
b.incomingByteRate.Mark(responseSize)
if b.brokerIncomingByteRate != nil {
b.brokerIncomingByteRate.Mark(responseSize)
}
b.responseSize.Update(responseSize)
if b.brokerResponseSize != nil {
b.brokerResponseSize.Update(responseSize)
}
}
func (b *Broker) updateRequestLatencyMetrics(requestLatency time.Duration) {
requestLatencyInMs := int64(requestLatency / time.Millisecond)
b.requestLatency.Update(requestLatencyInMs)
if b.brokerRequestLatency != nil {
b.brokerRequestLatency.Update(requestLatencyInMs)
}
}
func (b *Broker) updateOutgoingCommunicationMetrics(bytes int) {
b.requestRate.Mark(1)
if b.brokerRequestRate != nil {
b.brokerRequestRate.Mark(1)
}
requestSize := int64(bytes)
b.outgoingByteRate.Mark(requestSize)
if b.brokerOutgoingByteRate != nil {
b.brokerOutgoingByteRate.Mark(requestSize)
}
b.requestSize.Update(requestSize)
if b.brokerRequestSize != nil {
b.brokerRequestSize.Update(requestSize)
}
}

358
third/github.com/Shopify/sarama/broker_test.go Normal file
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@ -0,0 +1,358 @@
package sarama
import (
"fmt"
"testing"
"time"
)
func ExampleBroker() {
broker := NewBroker("localhost:9092")
err := broker.Open(nil)
if err != nil {
panic(err)
}
request := MetadataRequest{Topics: []string{"myTopic"}}
response, err := broker.GetMetadata(&request)
if err != nil {
_ = broker.Close()
panic(err)
}
fmt.Println("There are", len(response.Topics), "topics active in the cluster.")
if err = broker.Close(); err != nil {
panic(err)
}
}
type mockEncoder struct {
bytes []byte
}
func (m mockEncoder) encode(pe packetEncoder) error {
return pe.putRawBytes(m.bytes)
}
type brokerMetrics struct {
bytesRead int
bytesWritten int
}
func TestBrokerAccessors(t *testing.T) {
broker := NewBroker("abc:123")
if broker.ID() != -1 {
t.Error("New broker didn't have an ID of -1.")
}
if broker.Addr() != "abc:123" {
t.Error("New broker didn't have the correct address")
}
broker.id = 34
if broker.ID() != 34 {
t.Error("Manually setting broker ID did not take effect.")
}
}
func TestSimpleBrokerCommunication(t *testing.T) {
for _, tt := range brokerTestTable {
Logger.Printf("Testing broker communication for %s", tt.name)
mb := NewMockBroker(t, 0)
mb.Returns(&mockEncoder{tt.response})
pendingNotify := make(chan brokerMetrics)
// Register a callback to be notified about successful requests
mb.SetNotifier(func(bytesRead, bytesWritten int) {
pendingNotify <- brokerMetrics{bytesRead, bytesWritten}
})
broker := NewBroker(mb.Addr())
// Set the broker id in order to validate local broker metrics
broker.id = 0
conf := NewConfig()
conf.Version = tt.version
err := broker.Open(conf)
if err != nil {
t.Fatal(err)
}
tt.runner(t, broker)
// Wait up to 500 ms for the remote broker to process the request and
// notify us about the metrics
timeout := 500 * time.Millisecond
select {
case mockBrokerMetrics := <-pendingNotify:
validateBrokerMetrics(t, broker, mockBrokerMetrics)
case <-time.After(timeout):
t.Errorf("No request received for: %s after waiting for %v", tt.name, timeout)
}
mb.Close()
err = broker.Close()
if err != nil {
t.Error(err)
}
}
}
// We're not testing encoding/decoding here, so most of the requests/responses will be empty for simplicity's sake
var brokerTestTable = []struct {
version KafkaVersion
name string
response []byte
runner func(*testing.T, *Broker)
}{
{V0_10_0_0,
"MetadataRequest",
[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := MetadataRequest{}
response, err := broker.GetMetadata(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Metadata request got no response!")
}
}},
{V0_10_0_0,
"ConsumerMetadataRequest",
[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 't', 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := ConsumerMetadataRequest{}
response, err := broker.GetConsumerMetadata(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Consumer Metadata request got no response!")
}
}},
{V0_10_0_0,
"ProduceRequest (NoResponse)",
[]byte{},
func(t *testing.T, broker *Broker) {
request := ProduceRequest{}
request.RequiredAcks = NoResponse
response, err := broker.Produce(&request)
if err != nil {
t.Error(err)
}
if response != nil {
t.Error("Produce request with NoResponse got a response!")
}
}},
{V0_10_0_0,
"ProduceRequest (WaitForLocal)",
[]byte{0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := ProduceRequest{}
request.RequiredAcks = WaitForLocal
response, err := broker.Produce(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Produce request without NoResponse got no response!")
}
}},
{V0_10_0_0,
"FetchRequest",
[]byte{0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := FetchRequest{}
response, err := broker.Fetch(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Fetch request got no response!")
}
}},
{V0_10_0_0,
"OffsetFetchRequest",
[]byte{0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := OffsetFetchRequest{}
response, err := broker.FetchOffset(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("OffsetFetch request got no response!")
}
}},
{V0_10_0_0,
"OffsetCommitRequest",
[]byte{0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := OffsetCommitRequest{}
response, err := broker.CommitOffset(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("OffsetCommit request got no response!")
}
}},
{V0_10_0_0,
"OffsetRequest",
[]byte{0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := OffsetRequest{}
response, err := broker.GetAvailableOffsets(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Offset request got no response!")
}
}},
{V0_10_0_0,
"JoinGroupRequest",
[]byte{0x00, 0x17, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := JoinGroupRequest{}
response, err := broker.JoinGroup(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("JoinGroup request got no response!")
}
}},
{V0_10_0_0,
"SyncGroupRequest",
[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := SyncGroupRequest{}
response, err := broker.SyncGroup(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("SyncGroup request got no response!")
}
}},
{V0_10_0_0,
"LeaveGroupRequest",
[]byte{0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := LeaveGroupRequest{}
response, err := broker.LeaveGroup(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("LeaveGroup request got no response!")
}
}},
{V0_10_0_0,
"HeartbeatRequest",
[]byte{0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := HeartbeatRequest{}
response, err := broker.Heartbeat(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Heartbeat request got no response!")
}
}},
{V0_10_0_0,
"ListGroupsRequest",
[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := ListGroupsRequest{}
response, err := broker.ListGroups(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("ListGroups request got no response!")
}
}},
{V0_10_0_0,
"DescribeGroupsRequest",
[]byte{0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := DescribeGroupsRequest{}
response, err := broker.DescribeGroups(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("DescribeGroups request got no response!")
}
}},
{V0_10_0_0,
"ApiVersionsRequest",
[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := ApiVersionsRequest{}
response, err := broker.ApiVersions(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("ApiVersions request got no response!")
}
}},
{V1_1_0_0,
"DeleteGroupsRequest",
[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := DeleteGroupsRequest{}
response, err := broker.DeleteGroups(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("DeleteGroups request got no response!")
}
}},
}
func validateBrokerMetrics(t *testing.T, broker *Broker, mockBrokerMetrics brokerMetrics) {
metricValidators := newMetricValidators()
mockBrokerBytesRead := mockBrokerMetrics.bytesRead
mockBrokerBytesWritten := mockBrokerMetrics.bytesWritten
// Check that the number of bytes sent corresponds to what the mock broker received
metricValidators.registerForAllBrokers(broker, countMeterValidator("incoming-byte-rate", mockBrokerBytesWritten))
if mockBrokerBytesWritten == 0 {
// This a ProduceRequest with NoResponse
metricValidators.registerForAllBrokers(broker, countMeterValidator("response-rate", 0))
metricValidators.registerForAllBrokers(broker, countHistogramValidator("response-size", 0))
metricValidators.registerForAllBrokers(broker, minMaxHistogramValidator("response-size", 0, 0))
} else {
metricValidators.registerForAllBrokers(broker, countMeterValidator("response-rate", 1))
metricValidators.registerForAllBrokers(broker, countHistogramValidator("response-size", 1))
metricValidators.registerForAllBrokers(broker, minMaxHistogramValidator("response-size", mockBrokerBytesWritten, mockBrokerBytesWritten))
}
// Check that the number of bytes received corresponds to what the mock broker sent
metricValidators.registerForAllBrokers(broker, countMeterValidator("outgoing-byte-rate", mockBrokerBytesRead))
metricValidators.registerForAllBrokers(broker, countMeterValidator("request-rate", 1))
metricValidators.registerForAllBrokers(broker, countHistogramValidator("request-size", 1))
metricValidators.registerForAllBrokers(broker, minMaxHistogramValidator("request-size", mockBrokerBytesRead, mockBrokerBytesRead))
// Run the validators
metricValidators.run(t, broker.conf.MetricRegistry)
}

846
third/github.com/Shopify/sarama/client.go Normal file
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@ -0,0 +1,846 @@
package sarama
import (
"math/rand"
"sort"
"sync"
"time"
)
// Client is a generic Kafka client. It manages connections to one or more Kafka brokers.
// You MUST call Close() on a client to avoid leaks, it will not be garbage-collected
// automatically when it passes out of scope. It is safe to share a client amongst many
// users, however Kafka will process requests from a single client strictly in serial,
// so it is generally more efficient to use the default one client per producer/consumer.
type Client interface {
// Config returns the Config struct of the client. This struct should not be
// altered after it has been created.
Config() *Config
// Controller returns the cluster controller broker.
Controller() (*Broker, error)
// Brokers returns the current set of active brokers as retrieved from cluster metadata.
Brokers() []*Broker
// Topics returns the set of available topics as retrieved from cluster metadata.
Topics() ([]string, error)
// Partitions returns the sorted list of all partition IDs for the given topic.
Partitions(topic string) ([]int32, error)
// WritablePartitions returns the sorted list of all writable partition IDs for
// the given topic, where "writable" means "having a valid leader accepting
// writes".
WritablePartitions(topic string) ([]int32, error)
// Leader returns the broker object that is the leader of the current
// topic/partition, as determined by querying the cluster metadata.
Leader(topic string, partitionID int32) (*Broker, error)
// Replicas returns the set of all replica IDs for the given partition.
Replicas(topic string, partitionID int32) ([]int32, error)
// InSyncReplicas returns the set of all in-sync replica IDs for the given
// partition. In-sync replicas are replicas which are fully caught up with
// the partition leader.
InSyncReplicas(topic string, partitionID int32) ([]int32, error)
// RefreshMetadata takes a list of topics and queries the cluster to refresh the
// available metadata for those topics. If no topics are provided, it will refresh
// metadata for all topics.
RefreshMetadata(topics ...string) error
// GetOffset queries the cluster to get the most recent available offset at the
// given time (in milliseconds) on the topic/partition combination.
// Time should be OffsetOldest for the earliest available offset,
// OffsetNewest for the offset of the message that will be produced next, or a time.
GetOffset(topic string, partitionID int32, time int64) (int64, error)
// Coordinator returns the coordinating broker for a consumer group. It will
// return a locally cached value if it's available. You can call
// RefreshCoordinator to update the cached value. This function only works on
// Kafka 0.8.2 and higher.
Coordinator(consumerGroup string) (*Broker, error)
// RefreshCoordinator retrieves the coordinator for a consumer group and stores it
// in local cache. This function only works on Kafka 0.8.2 and higher.
RefreshCoordinator(consumerGroup string) error
// Close shuts down all broker connections managed by this client. It is required
// to call this function before a client object passes out of scope, as it will
// otherwise leak memory. You must close any Producers or Consumers using a client
// before you close the client.
Close() error
// Closed returns true if the client has already had Close called on it
Closed() bool
}
const (
// OffsetNewest stands for the log head offset, i.e. the offset that will be
// assigned to the next message that will be produced to the partition. You
// can send this to a client's GetOffset method to get this offset, or when
// calling ConsumePartition to start consuming new messages.
OffsetNewest int64 = -1
// OffsetOldest stands for the oldest offset available on the broker for a
// partition. You can send this to a client's GetOffset method to get this
// offset, or when calling ConsumePartition to start consuming from the
// oldest offset that is still available on the broker.
OffsetOldest int64 = -2
)
type client struct {
conf *Config
closer, closed chan none // for shutting down background metadata updater
// the broker addresses given to us through the constructor are not guaranteed to be returned in
// the cluster metadata (I *think* it only returns brokers who are currently leading partitions?)
// so we store them separately
seedBrokers []*Broker
deadSeeds []*Broker
controllerID int32 // cluster controller broker id
brokers map[int32]*Broker // maps broker ids to brokers
metadata map[string]map[int32]*PartitionMetadata // maps topics to partition ids to metadata
coordinators map[string]int32 // Maps consumer group names to coordinating broker IDs
// If the number of partitions is large, we can get some churn calling cachedPartitions,
// so the result is cached. It is important to update this value whenever metadata is changed
cachedPartitionsResults map[string][maxPartitionIndex][]int32
lock sync.RWMutex // protects access to the maps that hold cluster state.
}
// NewClient creates a new Client. It connects to one of the given broker addresses
// and uses that broker to automatically fetch metadata on the rest of the kafka cluster. If metadata cannot
// be retrieved from any of the given broker addresses, the client is not created.
func NewClient(addrs []string, conf *Config) (Client, error) {
Logger.Println("Initializing new client")
if conf == nil {
conf = NewConfig()
}
if err := conf.Validate(); err != nil {
return nil, err
}
if len(addrs) < 1 {
return nil, ConfigurationError("You must provide at least one broker address")
}
client := &client{
conf: conf,
closer: make(chan none),
closed: make(chan none),
brokers: make(map[int32]*Broker),
metadata: make(map[string]map[int32]*PartitionMetadata),
cachedPartitionsResults: make(map[string][maxPartitionIndex][]int32),
coordinators: make(map[string]int32),
}
random := rand.New(rand.NewSource(time.Now().UnixNano()))
for _, index := range random.Perm(len(addrs)) {
client.seedBrokers = append(client.seedBrokers, NewBroker(addrs[index]))
}
if conf.Metadata.Full {
// do an initial fetch of all cluster metadata by specifying an empty list of topics
err := client.RefreshMetadata()
switch err {
case nil:
break
case ErrLeaderNotAvailable, ErrReplicaNotAvailable, ErrTopicAuthorizationFailed, ErrClusterAuthorizationFailed:
// indicates that maybe part of the cluster is down, but is not fatal to creating the client
Logger.Println(err)
default:
close(client.closed) // we haven't started the background updater yet, so we have to do this manually
_ = client.Close()
return nil, err
}
}
go withRecover(client.backgroundMetadataUpdater)
Logger.Println("Successfully initialized new client")
return client, nil
}
func (client *client) Config() *Config {
return client.conf
}
func (client *client) Brokers() []*Broker {
client.lock.RLock()
defer client.lock.RUnlock()
brokers := make([]*Broker, 0)
for _, broker := range client.brokers {
brokers = append(brokers, broker)
}
return brokers
}
func (client *client) Close() error {
if client.Closed() {
// Chances are this is being called from a defer() and the error will go unobserved
// so we go ahead and log the event in this case.
Logger.Printf("Close() called on already closed client")
return ErrClosedClient
}
// shutdown and wait for the background thread before we take the lock, to avoid races
close(client.closer)
<-client.closed
client.lock.Lock()
defer client.lock.Unlock()
Logger.Println("Closing Client")
for _, broker := range client.brokers {
safeAsyncClose(broker)
}
for _, broker := range client.seedBrokers {
safeAsyncClose(broker)
}
client.brokers = nil
client.metadata = nil
return nil
}
func (client *client) Closed() bool {
return client.brokers == nil
}
func (client *client) Topics() ([]string, error) {
if client.Closed() {
return nil, ErrClosedClient
}
client.lock.RLock()
defer client.lock.RUnlock()
ret := make([]string, 0, len(client.metadata))
for topic := range client.metadata {
ret = append(ret, topic)
}
return ret, nil
}
func (client *client) Partitions(topic string) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}
partitions := client.cachedPartitions(topic, allPartitions)
if len(partitions) == 0 {
err := client.RefreshMetadata(topic)
if err != nil {
return nil, err
}
partitions = client.cachedPartitions(topic, allPartitions)
}
if partitions == nil {
return nil, ErrUnknownTopicOrPartition
}
return partitions, nil
}
func (client *client) WritablePartitions(topic string) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}
partitions := client.cachedPartitions(topic, writablePartitions)
// len==0 catches when it's nil (no such topic) and the odd case when every single
// partition is undergoing leader election simultaneously. Callers have to be able to handle
// this function returning an empty slice (which is a valid return value) but catching it
// here the first time (note we *don't* catch it below where we return ErrUnknownTopicOrPartition) triggers
// a metadata refresh as a nicety so callers can just try again and don't have to manually
// trigger a refresh (otherwise they'd just keep getting a stale cached copy).
if len(partitions) == 0 {
err := client.RefreshMetadata(topic)
if err != nil {
return nil, err
}
partitions = client.cachedPartitions(topic, writablePartitions)
}
if partitions == nil {
return nil, ErrUnknownTopicOrPartition
}
return partitions, nil
}
func (client *client) Replicas(topic string, partitionID int32) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}
metadata := client.cachedMetadata(topic, partitionID)
if metadata == nil {
err := client.RefreshMetadata(topic)
if err != nil {
return nil, err
}
metadata = client.cachedMetadata(topic, partitionID)
}
if metadata == nil {
return nil, ErrUnknownTopicOrPartition
}
if metadata.Err == ErrReplicaNotAvailable {
return dupInt32Slice(metadata.Replicas), metadata.Err
}
return dupInt32Slice(metadata.Replicas), nil
}
func (client *client) InSyncReplicas(topic string, partitionID int32) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}
metadata := client.cachedMetadata(topic, partitionID)
if metadata == nil {
err := client.RefreshMetadata(topic)
if err != nil {
return nil, err
}
metadata = client.cachedMetadata(topic, partitionID)
}
if metadata == nil {
return nil, ErrUnknownTopicOrPartition
}
if metadata.Err == ErrReplicaNotAvailable {
return dupInt32Slice(metadata.Isr), metadata.Err
}
return dupInt32Slice(metadata.Isr), nil
}
func (client *client) Leader(topic string, partitionID int32) (*Broker, error) {
if client.Closed() {
return nil, ErrClosedClient
}
leader, err := client.cachedLeader(topic, partitionID)
if leader == nil {
err = client.RefreshMetadata(topic)
if err != nil {
return nil, err
}
leader, err = client.cachedLeader(topic, partitionID)
}
return leader, err
}
func (client *client) RefreshMetadata(topics ...string) error {
if client.Closed() {
return ErrClosedClient
}
// Prior to 0.8.2, Kafka will throw exceptions on an empty topic and not return a proper
// error. This handles the case by returning an error instead of sending it
// off to Kafka. See: https://github.com/Shopify/sarama/pull/38#issuecomment-26362310
for _, topic := range topics {
if len(topic) == 0 {
return ErrInvalidTopic // this is the error that 0.8.2 and later correctly return
}
}
return client.tryRefreshMetadata(topics, client.conf.Metadata.Retry.Max)
}
func (client *client) GetOffset(topic string, partitionID int32, time int64) (int64, error) {
if client.Closed() {
return -1, ErrClosedClient
}
offset, err := client.getOffset(topic, partitionID, time)
if err != nil {
if err := client.RefreshMetadata(topic); err != nil {
return -1, err
}
return client.getOffset(topic, partitionID, time)
}
return offset, err
}
func (client *client) Controller() (*Broker, error) {
if client.Closed() {
return nil, ErrClosedClient
}
controller := client.cachedController()
if controller == nil {
if err := client.refreshMetadata(); err != nil {
return nil, err
}
controller = client.cachedController()
}
if controller == nil {
return nil, ErrControllerNotAvailable
}
_ = controller.Open(client.conf)
return controller, nil
}
func (client *client) Coordinator(consumerGroup string) (*Broker, error) {
if client.Closed() {
return nil, ErrClosedClient
}
coordinator := client.cachedCoordinator(consumerGroup)
if coordinator == nil {
if err := client.RefreshCoordinator(consumerGroup); err != nil {
return nil, err
}
coordinator = client.cachedCoordinator(consumerGroup)
}
if coordinator == nil {
return nil, ErrConsumerCoordinatorNotAvailable
}
_ = coordinator.Open(client.conf)
return coordinator, nil
}
func (client *client) RefreshCoordinator(consumerGroup string) error {
if client.Closed() {
return ErrClosedClient
}
response, err := client.getConsumerMetadata(consumerGroup, client.conf.Metadata.Retry.Max)
if err != nil {
return err
}
client.lock.Lock()
defer client.lock.Unlock()
client.registerBroker(response.Coordinator)
client.coordinators[consumerGroup] = response.Coordinator.ID()
return nil
}
// private broker management helpers
// registerBroker makes sure a broker received by a Metadata or Coordinator request is registered
// in the brokers map. It returns the broker that is registered, which may be the provided broker,
// or a previously registered Broker instance. You must hold the write lock before calling this function.
func (client *client) registerBroker(broker *Broker) {
if client.brokers[broker.ID()] == nil {
client.brokers[broker.ID()] = broker
Logger.Printf("client/brokers registered new broker #%d at %s", broker.ID(), broker.Addr())
} else if broker.Addr() != client.brokers[broker.ID()].Addr() {
safeAsyncClose(client.brokers[broker.ID()])
client.brokers[broker.ID()] = broker
Logger.Printf("client/brokers replaced registered broker #%d with %s", broker.ID(), broker.Addr())
}
}
// deregisterBroker removes a broker from the seedsBroker list, and if it's
// not the seedbroker, removes it from brokers map completely.
func (client *client) deregisterBroker(broker *Broker) {
client.lock.Lock()
defer client.lock.Unlock()
if len(client.seedBrokers) > 0 && broker == client.seedBrokers[0] {
client.deadSeeds = append(client.deadSeeds, broker)
client.seedBrokers = client.seedBrokers[1:]
} else {
// we do this so that our loop in `tryRefreshMetadata` doesn't go on forever,
// but we really shouldn't have to; once that loop is made better this case can be
// removed, and the function generally can be renamed from `deregisterBroker` to
// `nextSeedBroker` or something
Logger.Printf("client/brokers deregistered broker #%d at %s", broker.ID(), broker.Addr())
delete(client.brokers, broker.ID())
}
}
func (client *client) resurrectDeadBrokers() {
client.lock.Lock()
defer client.lock.Unlock()
Logger.Printf("client/brokers resurrecting %d dead seed brokers", len(client.deadSeeds))
client.seedBrokers = append(client.seedBrokers, client.deadSeeds...)
client.deadSeeds = nil
}
func (client *client) any() *Broker {
client.lock.RLock()
defer client.lock.RUnlock()
if len(client.seedBrokers) > 0 {
_ = client.seedBrokers[0].Open(client.conf)
return client.seedBrokers[0]
}
// not guaranteed to be random *or* deterministic
for _, broker := range client.brokers {
_ = broker.Open(client.conf)
return broker
}
return nil
}
// private caching/lazy metadata helpers
type partitionType int
const (
allPartitions partitionType = iota
writablePartitions
// If you add any more types, update the partition cache in update()
// Ensure this is the last partition type value
maxPartitionIndex
)
func (client *client) cachedMetadata(topic string, partitionID int32) *PartitionMetadata {
client.lock.RLock()
defer client.lock.RUnlock()
partitions := client.metadata[topic]
if partitions != nil {
return partitions[partitionID]
}
return nil
}
func (client *client) cachedPartitions(topic string, partitionSet partitionType) []int32 {
client.lock.RLock()
defer client.lock.RUnlock()
partitions, exists := client.cachedPartitionsResults[topic]
if !exists {
return nil
}
return partitions[partitionSet]
}
func (client *client) setPartitionCache(topic string, partitionSet partitionType) []int32 {
partitions := client.metadata[topic]
if partitions == nil {
return nil
}
ret := make([]int32, 0, len(partitions))
for _, partition := range partitions {
if partitionSet == writablePartitions && partition.Err == ErrLeaderNotAvailable {
continue
}
ret = append(ret, partition.ID)
}
sort.Sort(int32Slice(ret))
return ret
}
func (client *client) cachedLeader(topic string, partitionID int32) (*Broker, error) {
client.lock.RLock()
defer client.lock.RUnlock()
partitions := client.metadata[topic]
if partitions != nil {
metadata, ok := partitions[partitionID]
if ok {
if metadata.Err == ErrLeaderNotAvailable {
return nil, ErrLeaderNotAvailable
}
b := client.brokers[metadata.Leader]
if b == nil {
return nil, ErrLeaderNotAvailable
}
_ = b.Open(client.conf)
return b, nil
}
}
return nil, ErrUnknownTopicOrPartition
}
func (client *client) getOffset(topic string, partitionID int32, time int64) (int64, error) {
broker, err := client.Leader(topic, partitionID)
if err != nil {
return -1, err
}
request := &OffsetRequest{}
if client.conf.Version.IsAtLeast(V0_10_1_0) {
request.Version = 1
}
request.AddBlock(topic, partitionID, time, 1)
response, err := broker.GetAvailableOffsets(request)
if err != nil {
_ = broker.Close()
return -1, err
}
block := response.GetBlock(topic, partitionID)
if block == nil {
_ = broker.Close()
return -1, ErrIncompleteResponse
}
if block.Err != ErrNoError {
return -1, block.Err
}
if len(block.Offsets) != 1 {
return -1, ErrOffsetOutOfRange
}
return block.Offsets[0], nil
}
// core metadata update logic
func (client *client) backgroundMetadataUpdater() {
defer close(client.closed)
if client.conf.Metadata.RefreshFrequency == time.Duration(0) {
return
}
ticker := time.NewTicker(client.conf.Metadata.RefreshFrequency)
defer ticker.Stop()
for {
select {
case <-ticker.C:
if err := client.refreshMetadata(); err != nil {
Logger.Println("Client background metadata update:", err)
}
case <-client.closer:
return
}
}
}
func (client *client) refreshMetadata() error {
topics := []string{}
if !client.conf.Metadata.Full {
if specificTopics, err := client.Topics(); err != nil {
return err
} else if len(specificTopics) == 0 {
return ErrNoTopicsToUpdateMetadata
} else {
topics = specificTopics
}
}
if err := client.RefreshMetadata(topics...); err != nil {
return err
}
return nil
}
func (client *client) tryRefreshMetadata(topics []string, attemptsRemaining int) error {
retry := func(err error) error {
if attemptsRemaining > 0 {
Logger.Printf("client/metadata retrying after %dms... (%d attempts remaining)\n", client.conf.Metadata.Retry.Backoff/time.Millisecond, attemptsRemaining)
time.Sleep(client.conf.Metadata.Retry.Backoff)
return client.tryRefreshMetadata(topics, attemptsRemaining-1)
}
return err
}
for broker := client.any(); broker != nil; broker = client.any() {
if len(topics) > 0 {
Logger.Printf("client/metadata fetching metadata for %v from broker %s\n", topics, broker.addr)
} else {
Logger.Printf("client/metadata fetching metadata for all topics from broker %s\n", broker.addr)
}
req := &MetadataRequest{Topics: topics}
if client.conf.Version.IsAtLeast(V0_10_0_0) {
req.Version = 1
}
response, err := broker.GetMetadata(req)
switch err.(type) {
case nil:
allKnownMetaData := len(topics) == 0
// valid response, use it
shouldRetry, err := client.updateMetadata(response, allKnownMetaData)
if shouldRetry {
Logger.Println("client/metadata found some partitions to be leaderless")
return retry(err) // note: err can be nil
}
return err
case PacketEncodingError:
// didn't even send, return the error
return err
default:
// some other error, remove that broker and try again
Logger.Println("client/metadata got error from broker while fetching metadata:", err)
_ = broker.Close()
client.deregisterBroker(broker)
}
}
Logger.Println("client/metadata no available broker to send metadata request to")
client.resurrectDeadBrokers()
return retry(ErrOutOfBrokers)
}
// if no fatal error, returns a list of topics that need retrying due to ErrLeaderNotAvailable
func (client *client) updateMetadata(data *MetadataResponse, allKnownMetaData bool) (retry bool, err error) {
client.lock.Lock()
defer client.lock.Unlock()
// For all the brokers we received:
// - if it is a new ID, save it
// - if it is an existing ID, but the address we have is stale, discard the old one and save it
// - otherwise ignore it, replacing our existing one would just bounce the connection
for _, broker := range data.Brokers {
client.registerBroker(broker)
}
client.controllerID = data.ControllerID
if allKnownMetaData {
client.metadata = make(map[string]map[int32]*PartitionMetadata)
client.cachedPartitionsResults = make(map[string][maxPartitionIndex][]int32)
}
for _, topic := range data.Topics {
delete(client.metadata, topic.Name)
delete(client.cachedPartitionsResults, topic.Name)
switch topic.Err {
case ErrNoError:
break
case ErrInvalidTopic, ErrTopicAuthorizationFailed: // don't retry, don't store partial results
err = topic.Err
continue
case ErrUnknownTopicOrPartition: // retry, do not store partial partition results
err = topic.Err
retry = true
continue
case ErrLeaderNotAvailable: // retry, but store partial partition results
retry = true
break
default: // don't retry, don't store partial results
Logger.Printf("Unexpected topic-level metadata error: %s", topic.Err)
err = topic.Err
continue
}
client.metadata[topic.Name] = make(map[int32]*PartitionMetadata, len(topic.Partitions))
for _, partition := range topic.Partitions {
client.metadata[topic.Name][partition.ID] = partition
if partition.Err == ErrLeaderNotAvailable {
retry = true
}
}
var partitionCache [maxPartitionIndex][]int32
partitionCache[allPartitions] = client.setPartitionCache(topic.Name, allPartitions)
partitionCache[writablePartitions] = client.setPartitionCache(topic.Name, writablePartitions)
client.cachedPartitionsResults[topic.Name] = partitionCache
}
return
}
func (client *client) cachedCoordinator(consumerGroup string) *Broker {
client.lock.RLock()
defer client.lock.RUnlock()
if coordinatorID, ok := client.coordinators[consumerGroup]; ok {
return client.brokers[coordinatorID]
}
return nil
}
func (client *client) cachedController() *Broker {
client.lock.RLock()
defer client.lock.RUnlock()
return client.brokers[client.controllerID]
}
func (client *client) getConsumerMetadata(consumerGroup string, attemptsRemaining int) (*FindCoordinatorResponse, error) {
retry := func(err error) (*FindCoordinatorResponse, error) {
if attemptsRemaining > 0 {
Logger.Printf("client/coordinator retrying after %dms... (%d attempts remaining)\n", client.conf.Metadata.Retry.Backoff/time.Millisecond, attemptsRemaining)
time.Sleep(client.conf.Metadata.Retry.Backoff)
return client.getConsumerMetadata(consumerGroup, attemptsRemaining-1)
}
return nil, err
}
for broker := client.any(); broker != nil; broker = client.any() {
Logger.Printf("client/coordinator requesting coordinator for consumergroup %s from %s\n", consumerGroup, broker.Addr())
request := new(FindCoordinatorRequest)
request.CoordinatorKey = consumerGroup
request.CoordinatorType = CoordinatorGroup
response, err := broker.FindCoordinator(request)
if err != nil {
Logger.Printf("client/coordinator request to broker %s failed: %s\n", broker.Addr(), err)
switch err.(type) {
case PacketEncodingError:
return nil, err
default:
_ = broker.Close()
client.deregisterBroker(broker)
continue
}
}
switch response.Err {
case ErrNoError:
Logger.Printf("client/coordinator coordinator for consumergroup %s is #%d (%s)\n", consumerGroup, response.Coordinator.ID(), response.Coordinator.Addr())
return response, nil
case ErrConsumerCoordinatorNotAvailable:
Logger.Printf("client/coordinator coordinator for consumer group %s is not available\n", consumerGroup)
// This is very ugly, but this scenario will only happen once per cluster.
// The __consumer_offsets topic only has to be created one time.
// The number of partitions not configurable, but partition 0 should always exist.
if _, err := client.Leader("__consumer_offsets", 0); err != nil {
Logger.Printf("client/coordinator the __consumer_offsets topic is not initialized completely yet. Waiting 2 seconds...\n")
time.Sleep(2 * time.Second)
}
return retry(ErrConsumerCoordinatorNotAvailable)
default:
return nil, response.Err
}
}
Logger.Println("client/coordinator no available broker to send consumer metadata request to")
client.resurrectDeadBrokers()
return retry(ErrOutOfBrokers)
}

660
third/github.com/Shopify/sarama/client_test.go Normal file
View File

@ -0,0 +1,660 @@
package sarama
import (
"io"
"sync"
"testing"
"time"
)
func safeClose(t testing.TB, c io.Closer) {
err := c.Close()
if err != nil {
t.Error(err)
}
}
func TestSimpleClient(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
seedBroker.Returns(new(MetadataResponse))
client, err := NewClient([]string{seedBroker.Addr()}, nil)
if err != nil {
t.Fatal(err)
}
seedBroker.Close()
safeClose(t, client)
}
func TestCachedPartitions(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
replicas := []int32{3, 1, 5}
isr := []int32{5, 1}
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker("localhost:12345", 2)
metadataResponse.AddTopicPartition("my_topic", 0, 2, replicas, isr, ErrNoError)
metadataResponse.AddTopicPartition("my_topic", 1, 2, replicas, isr, ErrLeaderNotAvailable)
seedBroker.Returns(metadataResponse)
config := NewConfig()
config.Metadata.Retry.Max = 0
c, err := NewClient([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
client := c.(*client)
// Verify they aren't cached the same
allP := client.cachedPartitionsResults["my_topic"][allPartitions]
writeP := client.cachedPartitionsResults["my_topic"][writablePartitions]
if len(allP) == len(writeP) {
t.Fatal("Invalid lengths!")
}
tmp := client.cachedPartitionsResults["my_topic"]
// Verify we actually use the cache at all!
tmp[allPartitions] = []int32{1, 2, 3, 4}
client.cachedPartitionsResults["my_topic"] = tmp
if 4 != len(client.cachedPartitions("my_topic", allPartitions)) {
t.Fatal("Not using the cache!")
}
seedBroker.Close()
safeClose(t, client)
}
func TestClientDoesntCachePartitionsForTopicsWithErrors(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
replicas := []int32{seedBroker.BrokerID()}
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(seedBroker.Addr(), seedBroker.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 1, replicas[0], replicas, replicas, ErrNoError)
metadataResponse.AddTopicPartition("my_topic", 2, replicas[0], replicas, replicas, ErrNoError)
seedBroker.Returns(metadataResponse)
config := NewConfig()
config.Metadata.Retry.Max = 0
client, err := NewClient([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
metadataResponse = new(MetadataResponse)
metadataResponse.AddTopic("unknown", ErrUnknownTopicOrPartition)
seedBroker.Returns(metadataResponse)
partitions, err := client.Partitions("unknown")
if err != ErrUnknownTopicOrPartition {
t.Error("Expected ErrUnknownTopicOrPartition, found", err)
}
if partitions != nil {
t.Errorf("Should return nil as partition list, found %v", partitions)
}
// Should still use the cache of a known topic
partitions, err = client.Partitions("my_topic")
if err != nil {
t.Errorf("Expected no error, found %v", err)
}
metadataResponse = new(MetadataResponse)
metadataResponse.AddTopic("unknown", ErrUnknownTopicOrPartition)
seedBroker.Returns(metadataResponse)
// Should not use cache for unknown topic
partitions, err = client.Partitions("unknown")
if err != ErrUnknownTopicOrPartition {
t.Error("Expected ErrUnknownTopicOrPartition, found", err)
}
if partitions != nil {
t.Errorf("Should return nil as partition list, found %v", partitions)
}
seedBroker.Close()
safeClose(t, client)
}
func TestClientSeedBrokers(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker("localhost:12345", 2)
seedBroker.Returns(metadataResponse)
client, err := NewClient([]string{seedBroker.Addr()}, nil)
if err != nil {
t.Fatal(err)
}
seedBroker.Close()
safeClose(t, client)
}
func TestClientMetadata(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 5)
replicas := []int32{3, 1, 5}
isr := []int32{5, 1}
metadataResponse := new(MetadataResponse)
metadataResponse.AddBroker(leader.Addr(), leader.BrokerID())
metadataResponse.AddTopicPartition("my_topic", 0, leader.BrokerID(), replicas, isr, ErrNoError)
metadataResponse.AddTopicPartition("my_topic", 1, leader.BrokerID(), replicas, isr, ErrLeaderNotAvailable)
seedBroker.Returns(metadataResponse)
config := NewConfig()
config.Metadata.Retry.Max = 0
client, err := NewClient([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
topics, err := client.Topics()
if err != nil {
t.Error(err)
} else if len(topics) != 1 || topics[0] != "my_topic" {
t.Error("Client returned incorrect topics:", topics)
}
parts, err := client.Partitions("my_topic")
if err != nil {
t.Error(err)
} else if len(parts) != 2 || parts[0] != 0 || parts[1] != 1 {
t.Error("Client returned incorrect partitions for my_topic:", parts)
}
parts, err = client.WritablePartitions("my_topic")
if err != nil {
t.Error(err)
} else if len(parts) != 1 || parts[0] != 0 {
t.Error("Client returned incorrect writable partitions for my_topic:", parts)
}
tst, err := client.Leader("my_topic", 0)
if err != nil {
t.Error(err)
} else if tst.ID() != 5 {
t.Error("Leader for my_topic had incorrect ID.")
}
replicas, err = client.Replicas("my_topic", 0)
if err != nil {
t.Error(err)
} else if replicas[0] != 3 {
t.Error("Incorrect (or sorted) replica")
} else if replicas[1] != 1 {
t.Error("Incorrect (or sorted) replica")
} else if replicas[2] != 5 {
t.Error("Incorrect (or sorted) replica")
}
isr, err = client.InSyncReplicas("my_topic", 0)
if err != nil {
t.Error(err)
} else if len(isr) != 2 {
t.Error("Client returned incorrect ISRs for partition:", isr)
} else if isr[0] != 5 {
t.Error("Incorrect (or sorted) ISR:", isr)
} else if isr[1] != 1 {
t.Error("Incorrect (or sorted) ISR:", isr)
}
leader.Close()
seedBroker.Close()
safeClose(t, client)
}
func TestClientGetOffset(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 2)
leaderAddr := leader.Addr()
metadata := new(MetadataResponse)
metadata.AddTopicPartition("foo", 0, leader.BrokerID(), nil, nil, ErrNoError)
metadata.AddBroker(leaderAddr, leader.BrokerID())
seedBroker.Returns(metadata)
client, err := NewClient([]string{seedBroker.Addr()}, nil)
if err != nil {
t.Fatal(err)
}
offsetResponse := new(OffsetResponse)
offsetResponse.AddTopicPartition("foo", 0, 123)
leader.Returns(offsetResponse)
offset, err := client.GetOffset("foo", 0, OffsetNewest)
if err != nil {
t.Error(err)
}
if offset != 123 {
t.Error("Unexpected offset, got ", offset)
}
leader.Close()
seedBroker.Returns(metadata)
leader = NewMockBrokerAddr(t, 2, leaderAddr)
offsetResponse = new(OffsetResponse)
offsetResponse.AddTopicPartition("foo", 0, 456)
leader.Returns(offsetResponse)
offset, err = client.GetOffset("foo", 0, OffsetNewest)
if err != nil {
t.Error(err)
}
if offset != 456 {
t.Error("Unexpected offset, got ", offset)
}
seedBroker.Close()
leader.Close()
safeClose(t, client)
}
func TestClientReceivingUnknownTopic(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
metadataResponse1 := new(MetadataResponse)
seedBroker.Returns(metadataResponse1)
config := NewConfig()
config.Metadata.Retry.Max = 1
config.Metadata.Retry.Backoff = 0
client, err := NewClient([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
metadataUnknownTopic := new(MetadataResponse)
metadataUnknownTopic.AddTopic("new_topic", ErrUnknownTopicOrPartition)
seedBroker.Returns(metadataUnknownTopic)
seedBroker.Returns(metadataUnknownTopic)
if err := client.RefreshMetadata("new_topic"); err != ErrUnknownTopicOrPartition {
t.Error("ErrUnknownTopicOrPartition expected, got", err)
}
// If we are asking for the leader of a partition of the non-existing topic.
// we will request metadata again.
seedBroker.Returns(metadataUnknownTopic)
seedBroker.Returns(metadataUnknownTopic)
if _, err = client.Leader("new_topic", 1); err != ErrUnknownTopicOrPartition {
t.Error("Expected ErrUnknownTopicOrPartition, got", err)
}
safeClose(t, client)
seedBroker.Close()
}
func TestClientReceivingPartialMetadata(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 5)
metadataResponse1 := new(MetadataResponse)
metadataResponse1.AddBroker(leader.Addr(), leader.BrokerID())
seedBroker.Returns(metadataResponse1)
config := NewConfig()
config.Metadata.Retry.Max = 0
client, err := NewClient([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
replicas := []int32{leader.BrokerID(), seedBroker.BrokerID()}
metadataPartial := new(MetadataResponse)
metadataPartial.AddTopic("new_topic", ErrLeaderNotAvailable)
metadataPartial.AddTopicPartition("new_topic", 0, leader.BrokerID(), replicas, replicas, ErrNoError)
metadataPartial.AddTopicPartition("new_topic", 1, -1, replicas, []int32{}, ErrLeaderNotAvailable)
seedBroker.Returns(metadataPartial)
if err := client.RefreshMetadata("new_topic"); err != nil {
t.Error("ErrLeaderNotAvailable should not make RefreshMetadata respond with an error")
}
// Even though the metadata was incomplete, we should be able to get the leader of a partition
// for which we did get a useful response, without doing additional requests.
partition0Leader, err := client.Leader("new_topic", 0)
if err != nil {
t.Error(err)
} else if partition0Leader.Addr() != leader.Addr() {
t.Error("Unexpected leader returned", partition0Leader.Addr())
}
// If we are asking for the leader of a partition that didn't have a leader before,
// we will do another metadata request.
seedBroker.Returns(metadataPartial)
// Still no leader for the partition, so asking for it should return an error.
_, err = client.Leader("new_topic", 1)
if err != ErrLeaderNotAvailable {
t.Error("Expected ErrLeaderNotAvailable, got", err)
}
safeClose(t, client)
seedBroker.Close()
leader.Close()
}
func TestClientRefreshBehaviour(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
leader := NewMockBroker(t, 5)
metadataResponse1 := new(MetadataResponse)
metadataResponse1.AddBroker(leader.Addr(), leader.BrokerID())
seedBroker.Returns(metadataResponse1)
metadataResponse2 := new(MetadataResponse)
metadataResponse2.AddTopicPartition("my_topic", 0xb, leader.BrokerID(), nil, nil, ErrNoError)
seedBroker.Returns(metadataResponse2)
client, err := NewClient([]string{seedBroker.Addr()}, nil)
if err != nil {
t.Fatal(err)
}
parts, err := client.Partitions("my_topic")
if err != nil {
t.Error(err)
} else if len(parts) != 1 || parts[0] != 0xb {
t.Error("Client returned incorrect partitions for my_topic:", parts)
}
tst, err := client.Leader("my_topic", 0xb)
if err != nil {
t.Error(err)
} else if tst.ID() != 5 {
t.Error("Leader for my_topic had incorrect ID.")
}
leader.Close()
seedBroker.Close()
safeClose(t, client)
}
func TestClientResurrectDeadSeeds(t *testing.T) {
initialSeed := NewMockBroker(t, 0)
emptyMetadata := new(MetadataResponse)
initialSeed.Returns(emptyMetadata)
conf := NewConfig()
conf.Metadata.Retry.Backoff = 0
conf.Metadata.RefreshFrequency = 0
c, err := NewClient([]string{initialSeed.Addr()}, conf)
if err != nil {
t.Fatal(err)
}
initialSeed.Close()
client := c.(*client)
seed1 := NewMockBroker(t, 1)
seed2 := NewMockBroker(t, 2)
seed3 := NewMockBroker(t, 3)
addr1 := seed1.Addr()
addr2 := seed2.Addr()
addr3 := seed3.Addr()
// Overwrite the seed brokers with a fixed ordering to make this test deterministic.
safeClose(t, client.seedBrokers[0])
client.seedBrokers = []*Broker{NewBroker(addr1), NewBroker(addr2), NewBroker(addr3)}
client.deadSeeds = []*Broker{}
wg := sync.WaitGroup{}
wg.Add(1)
go func() {
if err := client.RefreshMetadata(); err != nil {
t.Error(err)
}
wg.Done()
}()
seed1.Close()
seed2.Close()
seed1 = NewMockBrokerAddr(t, 1, addr1)
seed2 = NewMockBrokerAddr(t, 2, addr2)
seed3.Close()
seed1.Close()
seed2.Returns(emptyMetadata)
wg.Wait()
if len(client.seedBrokers) != 2 {
t.Error("incorrect number of live seeds")
}
if len(client.deadSeeds) != 1 {
t.Error("incorrect number of dead seeds")
}
safeClose(t, c)
}
func TestClientController(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
defer seedBroker.Close()
controllerBroker := NewMockBroker(t, 2)
defer controllerBroker.Close()
seedBroker.SetHandlerByMap(map[string]MockResponse{
"MetadataRequest": NewMockMetadataResponse(t).
SetController(controllerBroker.BrokerID()).
SetBroker(seedBroker.Addr(), seedBroker.BrokerID()).
SetBroker(controllerBroker.Addr(), controllerBroker.BrokerID()),
})
cfg := NewConfig()
// test kafka version greater than 0.10.0.0
cfg.Version = V0_10_0_0
client1, err := NewClient([]string{seedBroker.Addr()}, cfg)
if err != nil {
t.Fatal(err)
}
defer safeClose(t, client1)
broker, err := client1.Controller()
if err != nil {
t.Fatal(err)
}
if broker.Addr() != controllerBroker.Addr() {
t.Errorf("Expected controller to have address %s, found %s", controllerBroker.Addr(), broker.Addr())
}
// test kafka version earlier than 0.10.0.0
cfg.Version = V0_9_0_1
client2, err := NewClient([]string{seedBroker.Addr()}, cfg)
if err != nil {
t.Fatal(err)
}
defer safeClose(t, client2)
if _, err = client2.Controller(); err != ErrControllerNotAvailable {
t.Errorf("Expected Contoller() to return %s, found %s", ErrControllerNotAvailable, err)
}
}
func TestClientCoordinatorWithConsumerOffsetsTopic(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
staleCoordinator := NewMockBroker(t, 2)
freshCoordinator := NewMockBroker(t, 3)
replicas := []int32{staleCoordinator.BrokerID(), freshCoordinator.BrokerID()}
metadataResponse1 := new(MetadataResponse)
metadataResponse1.AddBroker(staleCoordinator.Addr(), staleCoordinator.BrokerID())
metadataResponse1.AddBroker(freshCoordinator.Addr(), freshCoordinator.BrokerID())
metadataResponse1.AddTopicPartition("__consumer_offsets", 0, replicas[0], replicas, replicas, ErrNoError)
seedBroker.Returns(metadataResponse1)
client, err := NewClient([]string{seedBroker.Addr()}, nil)
if err != nil {
t.Fatal(err)
}
coordinatorResponse1 := new(ConsumerMetadataResponse)
coordinatorResponse1.Err = ErrConsumerCoordinatorNotAvailable
seedBroker.Returns(coordinatorResponse1)
coordinatorResponse2 := new(ConsumerMetadataResponse)
coordinatorResponse2.CoordinatorID = staleCoordinator.BrokerID()
coordinatorResponse2.CoordinatorHost = "127.0.0.1"
coordinatorResponse2.CoordinatorPort = staleCoordinator.Port()
seedBroker.Returns(coordinatorResponse2)
broker, err := client.Coordinator("my_group")
if err != nil {
t.Error(err)
}
if staleCoordinator.Addr() != broker.Addr() {
t.Errorf("Expected coordinator to have address %s, found %s", staleCoordinator.Addr(), broker.Addr())
}
if staleCoordinator.BrokerID() != broker.ID() {
t.Errorf("Expected coordinator to have ID %d, found %d", staleCoordinator.BrokerID(), broker.ID())
}
// Grab the cached value
broker2, err := client.Coordinator("my_group")
if err != nil {
t.Error(err)
}
if broker2.Addr() != broker.Addr() {
t.Errorf("Expected the coordinator to be the same, but found %s vs. %s", broker2.Addr(), broker.Addr())
}
coordinatorResponse3 := new(ConsumerMetadataResponse)
coordinatorResponse3.CoordinatorID = freshCoordinator.BrokerID()
coordinatorResponse3.CoordinatorHost = "127.0.0.1"
coordinatorResponse3.CoordinatorPort = freshCoordinator.Port()
seedBroker.Returns(coordinatorResponse3)
// Refresh the locally cahced value because it's stale
if err := client.RefreshCoordinator("my_group"); err != nil {
t.Error(err)
}
// Grab the fresh value
broker3, err := client.Coordinator("my_group")
if err != nil {
t.Error(err)
}
if broker3.Addr() != freshCoordinator.Addr() {
t.Errorf("Expected the freshCoordinator to be returned, but found %s.", broker3.Addr())
}
freshCoordinator.Close()
staleCoordinator.Close()
seedBroker.Close()
safeClose(t, client)
}
func TestClientCoordinatorWithoutConsumerOffsetsTopic(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
coordinator := NewMockBroker(t, 2)
metadataResponse1 := new(MetadataResponse)
seedBroker.Returns(metadataResponse1)
config := NewConfig()
config.Metadata.Retry.Max = 1
config.Metadata.Retry.Backoff = 0
client, err := NewClient([]string{seedBroker.Addr()}, config)
if err != nil {
t.Fatal(err)
}
coordinatorResponse1 := new(ConsumerMetadataResponse)
coordinatorResponse1.Err = ErrConsumerCoordinatorNotAvailable
seedBroker.Returns(coordinatorResponse1)
metadataResponse2 := new(MetadataResponse)
metadataResponse2.AddTopic("__consumer_offsets", ErrUnknownTopicOrPartition)
seedBroker.Returns(metadataResponse2)
replicas := []int32{coordinator.BrokerID()}
metadataResponse3 := new(MetadataResponse)
metadataResponse3.AddTopicPartition("__consumer_offsets", 0, replicas[0], replicas, replicas, ErrNoError)
seedBroker.Returns(metadataResponse3)
coordinatorResponse2 := new(ConsumerMetadataResponse)
coordinatorResponse2.CoordinatorID = coordinator.BrokerID()
coordinatorResponse2.CoordinatorHost = "127.0.0.1"
coordinatorResponse2.CoordinatorPort = coordinator.Port()
seedBroker.Returns(coordinatorResponse2)
broker, err := client.Coordinator("my_group")
if err != nil {
t.Error(err)
}
if coordinator.Addr() != broker.Addr() {
t.Errorf("Expected coordinator to have address %s, found %s", coordinator.Addr(), broker.Addr())
}
if coordinator.BrokerID() != broker.ID() {
t.Errorf("Expected coordinator to have ID %d, found %d", coordinator.BrokerID(), broker.ID())
}
coordinator.Close()
seedBroker.Close()
safeClose(t, client)
}
func TestClientAutorefreshShutdownRace(t *testing.T) {
seedBroker := NewMockBroker(t, 1)
metadataResponse := new(MetadataResponse)
seedBroker.Returns(metadataResponse)
conf := NewConfig()
conf.Metadata.RefreshFrequency = 100 * time.Millisecond
client, err := NewClient([]string{seedBroker.Addr()}, conf)
if err != nil {
t.Fatal(err)
}
// Wait for the background refresh to kick in
time.Sleep(110 * time.Millisecond)
done := make(chan none)
go func() {
// Close the client
if err := client.Close(); err != nil {
t.Fatal(err)
}
close(done)
}()
// Wait for the Close to kick in
time.Sleep(10 * time.Millisecond)
// Then return some metadata to the still-running background thread
leader := NewMockBroker(t, 2)
metadataResponse.AddBroker(leader.Addr(), leader.BrokerID())
metadataResponse.AddTopicPartition("foo", 0, leader.BrokerID(), []int32{2}, []int32{2}, ErrNoError)
seedBroker.Returns(metadataResponse)
<-done
seedBroker.Close()
// give the update time to happen so we get a panic if it's still running (which it shouldn't)
time.Sleep(10 * time.Millisecond)
}

206
third/github.com/Shopify/sarama/client_tls_test.go Normal file
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package sarama
import (
"math/big"
"net"
"testing"
"time"
"crypto/rand"
"crypto/rsa"
"crypto/tls"
"crypto/x509"
"crypto/x509/pkix"
)
func TestTLS(t *testing.T) {
cakey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatal(err)
}
clientkey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatal(err)
}
hostkey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatal(err)
}
nvb := time.Now().Add(-1 * time.Hour)
nva := time.Now().Add(1 * time.Hour)
caTemplate := &x509.Certificate{
Subject: pkix.Name{CommonName: "ca"},
Issuer: pkix.Name{CommonName: "ca"},
SerialNumber: big.NewInt(0),
NotAfter: nva,
NotBefore: nvb,
IsCA: true,
BasicConstraintsValid: true,
KeyUsage: x509.KeyUsageCertSign,
}
caDer, err := x509.CreateCertificate(rand.Reader, caTemplate, caTemplate, &cakey.PublicKey, cakey)
if err != nil {
t.Fatal(err)
}
caFinalCert, err := x509.ParseCertificate(caDer)
if err != nil {
t.Fatal(err)
}
hostDer, err := x509.CreateCertificate(rand.Reader, &x509.Certificate{
Subject: pkix.Name{CommonName: "host"},
Issuer: pkix.Name{CommonName: "ca"},
IPAddresses: []net.IP{net.IPv4(127, 0, 0, 1)},
SerialNumber: big.NewInt(0),
NotAfter: nva,
NotBefore: nvb,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
}, caFinalCert, &hostkey.PublicKey, cakey)
if err != nil {
t.Fatal(err)
}
clientDer, err := x509.CreateCertificate(rand.Reader, &x509.Certificate{
Subject: pkix.Name{CommonName: "client"},
Issuer: pkix.Name{CommonName: "ca"},
SerialNumber: big.NewInt(0),
NotAfter: nva,
NotBefore: nvb,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
}, caFinalCert, &clientkey.PublicKey, cakey)
if err != nil {
t.Fatal(err)
}
pool := x509.NewCertPool()
pool.AddCert(caFinalCert)
systemCerts, err := x509.SystemCertPool()
if err != nil {
t.Fatal(err)
}
// Keep server the same - it's the client that we're testing
serverTLSConfig := &tls.Config{
Certificates: []tls.Certificate{tls.Certificate{
Certificate: [][]byte{hostDer},
PrivateKey: hostkey,
}},
ClientAuth: tls.RequireAndVerifyClientCert,
ClientCAs: pool,
}
for _, tc := range []struct {
Succeed bool
Server, Client *tls.Config
}{
{ // Verify client fails if wrong CA cert pool is specified
Succeed: false,
Server: serverTLSConfig,
Client: &tls.Config{
RootCAs: systemCerts,
Certificates: []tls.Certificate{tls.Certificate{
Certificate: [][]byte{clientDer},
PrivateKey: clientkey,
}},
},
},
{ // Verify client fails if wrong key is specified
Succeed: false,
Server: serverTLSConfig,
Client: &tls.Config{
RootCAs: pool,
Certificates: []tls.Certificate{tls.Certificate{
Certificate: [][]byte{clientDer},
PrivateKey: hostkey,
}},
},
},
{ // Verify client fails if wrong cert is specified
Succeed: false,
Server: serverTLSConfig,
Client: &tls.Config{
RootCAs: pool,
Certificates: []tls.Certificate{tls.Certificate{
Certificate: [][]byte{hostDer},
PrivateKey: clientkey,
}},
},
},
{ // Verify client fails if no CAs are specified
Succeed: false,
Server: serverTLSConfig,
Client: &tls.Config{
Certificates: []tls.Certificate{tls.Certificate{
Certificate: [][]byte{clientDer},
PrivateKey: clientkey,
}},
},
},
{ // Verify client fails if no keys are specified
Succeed: false,
Server: serverTLSConfig,
Client: &tls.Config{
RootCAs: pool,
},
},
{ // Finally, verify it all works happily with client and server cert in place
Succeed: true,
Server: serverTLSConfig,
Client: &tls.Config{
RootCAs: pool,
Certificates: []tls.Certificate{tls.Certificate{
Certificate: [][]byte{clientDer},
PrivateKey: clientkey,
}},
},
},
} {
doListenerTLSTest(t, tc.Succeed, tc.Server, tc.Client)
}
}
func doListenerTLSTest(t *testing.T, expectSuccess bool, serverConfig, clientConfig *tls.Config) {
serverConfig.BuildNameToCertificate()
clientConfig.BuildNameToCertificate()
seedListener, err := tls.Listen("tcp", "127.0.0.1:0", serverConfig)
if err != nil {
t.Fatal("cannot open listener", err)
}
var childT *testing.T
if expectSuccess {
childT = t
} else {
childT = &testing.T{} // we want to swallow errors
}
seedBroker := NewMockBrokerListener(childT, 1, seedListener)
defer seedBroker.Close()
seedBroker.Returns(new(MetadataResponse))
config := NewConfig()
config.Net.TLS.Enable = true
config.Net.TLS.Config = clientConfig
client, err := NewClient([]string{seedBroker.Addr()}, config)
if err == nil {
safeClose(t, client)
}
if expectSuccess {
if err != nil {
t.Fatal(err)
}
} else {
if err == nil {
t.Fatal("expected failure")
}
}
}

458
third/github.com/Shopify/sarama/config.go Normal file
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package sarama
import (
"compress/gzip"
"crypto/tls"
"fmt"
"io/ioutil"
"regexp"
"time"
"gitee.com/johng/gf/third/github.com/rcrowley/go-metrics"
)
const defaultClientID = "sarama"
var validID = regexp.MustCompile(`\A[A-Za-z0-9._-]+\z`)
// Config is used to pass multiple configuration options to Sarama's constructors.
type Config struct {
// Net is the namespace for network-level properties used by the Broker, and
// shared by the Client/Producer/Consumer.
Net struct {
// How many outstanding requests a connection is allowed to have before
// sending on it blocks (default 5).
MaxOpenRequests int
// All three of the below configurations are similar to the
// `socket.timeout.ms` setting in JVM kafka. All of them default
// to 30 seconds.
DialTimeout time.Duration // How long to wait for the initial connection.
ReadTimeout time.Duration // How long to wait for a response.
WriteTimeout time.Duration // How long to wait for a transmit.
TLS struct {
// Whether or not to use TLS when connecting to the broker
// (defaults to false).
Enable bool
// The TLS configuration to use for secure connections if
// enabled (defaults to nil).
Config *tls.Config
}
// SASL based authentication with broker. While there are multiple SASL authentication methods
// the current implementation is limited to plaintext (SASL/PLAIN) authentication
SASL struct {
// Whether or not to use SASL authentication when connecting to the broker
// (defaults to false).
Enable bool
// Whether or not to send the Kafka SASL handshake first if enabled
// (defaults to true). You should only set this to false if you're using
// a non-Kafka SASL proxy.
Handshake bool
//username and password for SASL/PLAIN authentication
User string
Password string
}
// KeepAlive specifies the keep-alive period for an active network connection.
// If zero, keep-alives are disabled. (default is 0: disabled).
KeepAlive time.Duration
}
// Metadata is the namespace for metadata management properties used by the
// Client, and shared by the Producer/Consumer.
Metadata struct {
Retry struct {
// The total number of times to retry a metadata request when the
// cluster is in the middle of a leader election (default 3).
Max int
// How long to wait for leader election to occur before retrying
// (default 250ms). Similar to the JVM's `retry.backoff.ms`.
Backoff time.Duration
}
// How frequently to refresh the cluster metadata in the background.
// Defaults to 10 minutes. Set to 0 to disable. Similar to
// `topic.metadata.refresh.interval.ms` in the JVM version.
RefreshFrequency time.Duration
// Whether to maintain a full set of metadata for all topics, or just
// the minimal set that has been necessary so far. The full set is simpler
// and usually more convenient, but can take up a substantial amount of
// memory if you have many topics and partitions. Defaults to true.
Full bool
}
// Producer is the namespace for configuration related to producing messages,
// used by the Producer.
Producer struct {
// The maximum permitted size of a message (defaults to 1000000). Should be
// set equal to or smaller than the broker's `message.max.bytes`.
MaxMessageBytes int
// The level of acknowledgement reliability needed from the broker (defaults
// to WaitForLocal). Equivalent to the `request.required.acks` setting of the
// JVM producer.
RequiredAcks RequiredAcks
// The maximum duration the broker will wait the receipt of the number of
// RequiredAcks (defaults to 10 seconds). This is only relevant when
// RequiredAcks is set to WaitForAll or a number > 1. Only supports
// millisecond resolution, nanoseconds will be truncated. Equivalent to
// the JVM producer's `request.timeout.ms` setting.
Timeout time.Duration
// The type of compression to use on messages (defaults to no compression).
// Similar to `compression.codec` setting of the JVM producer.
Compression CompressionCodec
// The level of compression to use on messages. The meaning depends
// on the actual compression type used and defaults to default compression
// level for the codec.
CompressionLevel int
// Generates partitioners for choosing the partition to send messages to
// (defaults to hashing the message key). Similar to the `partitioner.class`
// setting for the JVM producer.
Partitioner PartitionerConstructor
// Return specifies what channels will be populated. If they are set to true,
// you must read from the respective channels to prevent deadlock. If,
// however, this config is used to create a `SyncProducer`, both must be set
// to true and you shall not read from the channels since the producer does
// this internally.
Return struct {
// If enabled, successfully delivered messages will be returned on the
// Successes channel (default disabled).
Successes bool
// If enabled, messages that failed to deliver will be returned on the
// Errors channel, including error (default enabled).
Errors bool
}
// The following config options control how often messages are batched up and
// sent to the broker. By default, messages are sent as fast as possible, and
// all messages received while the current batch is in-flight are placed
// into the subsequent batch.
Flush struct {
// The best-effort number of bytes needed to trigger a flush. Use the
// global sarama.MaxRequestSize to set a hard upper limit.
Bytes int
// The best-effort number of messages needed to trigger a flush. Use
// `MaxMessages` to set a hard upper limit.
Messages int
// The best-effort frequency of flushes. Equivalent to
// `queue.buffering.max.ms` setting of JVM producer.
Frequency time.Duration
// The maximum number of messages the producer will send in a single
// broker request. Defaults to 0 for unlimited. Similar to
// `queue.buffering.max.messages` in the JVM producer.
MaxMessages int
}
Retry struct {
// The total number of times to retry sending a message (default 3).
// Similar to the `message.send.max.retries` setting of the JVM producer.
Max int
// How long to wait for the cluster to settle between retries
// (default 100ms). Similar to the `retry.backoff.ms` setting of the
// JVM producer.
Backoff time.Duration
}
}
// Consumer is the namespace for configuration related to consuming messages,
// used by the Consumer.
//
// Note that Sarama's Consumer type does not currently support automatic
// consumer-group rebalancing and offset tracking. For Zookeeper-based
// tracking (Kafka 0.8.2 and earlier), the https://github.com/wvanbergen/kafka
// library builds on Sarama to add this support. For Kafka-based tracking
// (Kafka 0.9 and later), the https://github.com/bsm/sarama-cluster library
// builds on Sarama to add this support.
Consumer struct {
Retry struct {
// How long to wait after a failing to read from a partition before
// trying again (default 2s).
Backoff time.Duration
}
// Fetch is the namespace for controlling how many bytes are retrieved by any
// given request.
Fetch struct {
// The minimum number of message bytes to fetch in a request - the broker
// will wait until at least this many are available. The default is 1,
// as 0 causes the consumer to spin when no messages are available.
// Equivalent to the JVM's `fetch.min.bytes`.
Min int32
// The default number of message bytes to fetch from the broker in each
// request (default 1MB). This should be larger than the majority of
// your messages, or else the consumer will spend a lot of time
// negotiating sizes and not actually consuming. Similar to the JVM's
// `fetch.message.max.bytes`.
Default int32
// The maximum number of message bytes to fetch from the broker in a
// single request. Messages larger than this will return
// ErrMessageTooLarge and will not be consumable, so you must be sure
// this is at least as large as your largest message. Defaults to 0
// (no limit). Similar to the JVM's `fetch.message.max.bytes`. The
// global `sarama.MaxResponseSize` still applies.
Max int32
}
// The maximum amount of time the broker will wait for Consumer.Fetch.Min
// bytes to become available before it returns fewer than that anyways. The
// default is 250ms, since 0 causes the consumer to spin when no events are
// available. 100-500ms is a reasonable range for most cases. Kafka only
// supports precision up to milliseconds; nanoseconds will be truncated.
// Equivalent to the JVM's `fetch.wait.max.ms`.
MaxWaitTime time.Duration
// The maximum amount of time the consumer expects a message takes to
// process for the user. If writing to the Messages channel takes longer
// than this, that partition will stop fetching more messages until it
// can proceed again.
// Note that, since the Messages channel is buffered, the actual grace time is
// (MaxProcessingTime * ChanneBufferSize). Defaults to 100ms.
// If a message is not written to the Messages channel between two ticks
// of the expiryTicker then a timeout is detected.
// Using a ticker instead of a timer to detect timeouts should typically
// result in many fewer calls to Timer functions which may result in a
// significant performance improvement if many messages are being sent
// and timeouts are infrequent.
// The disadvantage of using a ticker instead of a timer is that
// timeouts will be less accurate. That is, the effective timeout could
// be between `MaxProcessingTime` and `2 * MaxProcessingTime`. For
// example, if `MaxProcessingTime` is 100ms then a delay of 180ms
// between two messages being sent may not be recognized as a timeout.
MaxProcessingTime time.Duration
// Return specifies what channels will be populated. If they are set to true,
// you must read from them to prevent deadlock.
Return struct {
// If enabled, any errors that occurred while consuming are returned on
// the Errors channel (default disabled).
Errors bool
}
// Offsets specifies configuration for how and when to commit consumed
// offsets. This currently requires the manual use of an OffsetManager
// but will eventually be automated.
Offsets struct {
// How frequently to commit updated offsets. Defaults to 1s.
CommitInterval time.Duration
// The initial offset to use if no offset was previously committed.
// Should be OffsetNewest or OffsetOldest. Defaults to OffsetNewest.
Initial int64
// The retention duration for committed offsets. If zero, disabled
// (in which case the `offsets.retention.minutes` option on the
// broker will be used). Kafka only supports precision up to
// milliseconds; nanoseconds will be truncated. Requires Kafka
// broker version 0.9.0 or later.
// (default is 0: disabled).
Retention time.Duration
}
}
// A user-provided string sent with every request to the brokers for logging,
// debugging, and auditing purposes. Defaults to "sarama", but you should
// probably set it to something specific to your application.
ClientID string
// The number of events to buffer in internal and external channels. This
// permits the producer and consumer to continue processing some messages
// in the background while user code is working, greatly improving throughput.
// Defaults to 256.
ChannelBufferSize int
// The version of Kafka that Sarama will assume it is running against.
// Defaults to the oldest supported stable version. Since Kafka provides
// backwards-compatibility, setting it to a version older than you have
// will not break anything, although it may prevent you from using the
// latest features. Setting it to a version greater than you are actually
// running may lead to random breakage.
Version KafkaVersion
// The registry to define metrics into.
// Defaults to a local registry.
// If you want to disable metrics gathering, set "metrics.UseNilMetrics" to "true"
// prior to starting Sarama.
// See Examples on how to use the metrics registry
MetricRegistry metrics.Registry
}
// NewConfig returns a new configuration instance with sane defaults.
func NewConfig() *Config {
c := &Config{}
c.Net.MaxOpenRequests = 5
c.Net.DialTimeout = 30 * time.Second
c.Net.ReadTimeout = 30 * time.Second
c.Net.WriteTimeout = 30 * time.Second
c.Net.SASL.Handshake = true
c.Metadata.Retry.Max = 3
c.Metadata.Retry.Backoff = 250 * time.Millisecond
c.Metadata.RefreshFrequency = 10 * time.Minute
c.Metadata.Full = true
c.Producer.MaxMessageBytes = 1000000
c.Producer.RequiredAcks = WaitForLocal
c.Producer.Timeout = 10 * time.Second
c.Producer.Partitioner = NewHashPartitioner
c.Producer.Retry.Max = 3
c.Producer.Retry.Backoff = 100 * time.Millisecond
c.Producer.Return.Errors = true
c.Producer.CompressionLevel = CompressionLevelDefault
c.Consumer.Fetch.Min = 1
c.Consumer.Fetch.Default = 1024 * 1024
c.Consumer.Retry.Backoff = 2 * time.Second
c.Consumer.MaxWaitTime = 250 * time.Millisecond
c.Consumer.MaxProcessingTime = 100 * time.Millisecond
c.Consumer.Return.Errors = false
c.Consumer.Offsets.CommitInterval = 1 * time.Second
c.Consumer.Offsets.Initial = OffsetNewest
c.ClientID = defaultClientID
c.ChannelBufferSize = 256
c.Version = MinVersion
c.MetricRegistry = metrics.NewRegistry()
return c
}
// Validate checks a Config instance. It will return a
// ConfigurationError if the specified values don't make sense.
func (c *Config) Validate() error {
// some configuration values should be warned on but not fail completely, do those first
if c.Net.TLS.Enable == false && c.Net.TLS.Config != nil {
Logger.Println("Net.TLS is disabled but a non-nil configuration was provided.")
}
if c.Net.SASL.Enable == false {
if c.Net.SASL.User != "" {
Logger.Println("Net.SASL is disabled but a non-empty username was provided.")
}
if c.Net.SASL.Password != "" {
Logger.Println("Net.SASL is disabled but a non-empty password was provided.")
}
}
if c.Producer.RequiredAcks > 1 {
Logger.Println("Producer.RequiredAcks > 1 is deprecated and will raise an exception with kafka >= 0.8.2.0.")
}
if c.Producer.MaxMessageBytes >= int(MaxRequestSize) {
Logger.Println("Producer.MaxMessageBytes must be smaller than MaxRequestSize; it will be ignored.")
}
if c.Producer.Flush.Bytes >= int(MaxRequestSize) {
Logger.Println("Producer.Flush.Bytes must be smaller than MaxRequestSize; it will be ignored.")
}
if (c.Producer.Flush.Bytes > 0 || c.Producer.Flush.Messages > 0) && c.Producer.Flush.Frequency == 0 {
Logger.Println("Producer.Flush: Bytes or Messages are set, but Frequency is not; messages may not get flushed.")
}
if c.Producer.Timeout%time.Millisecond != 0 {
Logger.Println("Producer.Timeout only supports millisecond resolution; nanoseconds will be truncated.")
}
if c.Consumer.MaxWaitTime < 100*time.Millisecond {
Logger.Println("Consumer.MaxWaitTime is very low, which can cause high CPU and network usage. See documentation for details.")
}
if c.Consumer.MaxWaitTime%time.Millisecond != 0 {
Logger.Println("Consumer.MaxWaitTime only supports millisecond precision; nanoseconds will be truncated.")
}
if c.Consumer.Offsets.Retention%time.Millisecond != 0 {
Logger.Println("Consumer.Offsets.Retention only supports millisecond precision; nanoseconds will be truncated.")
}
if c.ClientID == defaultClientID {
Logger.Println("ClientID is the default of 'sarama', you should consider setting it to something application-specific.")
}
// validate Net values
switch {
case c.Net.MaxOpenRequests <= 0:
return ConfigurationError("Net.MaxOpenRequests must be > 0")
case c.Net.DialTimeout <= 0:
return ConfigurationError("Net.DialTimeout must be > 0")
case c.Net.ReadTimeout <= 0:
return ConfigurationError("Net.ReadTimeout must be > 0")
case c.Net.WriteTimeout <= 0:
return ConfigurationError("Net.WriteTimeout must be > 0")
case c.Net.KeepAlive < 0:
return ConfigurationError("Net.KeepAlive must be >= 0")
case c.Net.SASL.Enable == true && c.Net.SASL.User == "":
return ConfigurationError("Net.SASL.User must not be empty when SASL is enabled")
case c.Net.SASL.Enable == true && c.Net.SASL.Password == "":
return ConfigurationError("Net.SASL.Password must not be empty when SASL is enabled")
}
// validate the Metadata values
switch {
case c.Metadata.Retry.Max < 0:
return ConfigurationError("Metadata.Retry.Max must be >= 0")
case c.Metadata.Retry.Backoff < 0:
return ConfigurationError("Metadata.Retry.Backoff must be >= 0")
case c.Metadata.RefreshFrequency < 0:
return ConfigurationError("Metadata.RefreshFrequency must be >= 0")
}
// validate the Producer values
switch {
case c.Producer.MaxMessageBytes <= 0:
return ConfigurationError("Producer.MaxMessageBytes must be > 0")
case c.Producer.RequiredAcks < -1:
return ConfigurationError("Producer.RequiredAcks must be >= -1")
case c.Producer.Timeout <= 0:
return ConfigurationError("Producer.Timeout must be > 0")
case c.Producer.Partitioner == nil:
return ConfigurationError("Producer.Partitioner must not be nil")
case c.Producer.Flush.Bytes < 0:
return ConfigurationError("Producer.Flush.Bytes must be >= 0")
case c.Producer.Flush.Messages < 0:
return ConfigurationError("Producer.Flush.Messages must be >= 0")
case c.Producer.Flush.Frequency < 0:
return ConfigurationError("Producer.Flush.Frequency must be >= 0")
case c.Producer.Flush.MaxMessages < 0:
return ConfigurationError("Producer.Flush.MaxMessages must be >= 0")
case c.Producer.Flush.MaxMessages > 0 && c.Producer.Flush.MaxMessages < c.Producer.Flush.Messages:
return ConfigurationError("Producer.Flush.MaxMessages must be >= Producer.Flush.Messages when set")
case c.Producer.Retry.Max < 0:
return ConfigurationError("Producer.Retry.Max must be >= 0")
case c.Producer.Retry.Backoff < 0:
return ConfigurationError("Producer.Retry.Backoff must be >= 0")
}
if c.Producer.Compression == CompressionLZ4 && !c.Version.IsAtLeast(V0_10_0_0) {
return ConfigurationError("lz4 compression requires Version >= V0_10_0_0")
}
if c.Producer.Compression == CompressionGZIP {
if c.Producer.CompressionLevel != CompressionLevelDefault {
if _, err := gzip.NewWriterLevel(ioutil.Discard, c.Producer.CompressionLevel); err != nil {
return ConfigurationError(fmt.Sprintf("gzip compression does not work with level %d: %v", c.Producer.CompressionLevel, err))
}
}
}
// validate the Consumer values
switch {
case c.Consumer.Fetch.Min <= 0:
return ConfigurationError("Consumer.Fetch.Min must be > 0")
case c.Consumer.Fetch.Default <= 0:
return ConfigurationError("Consumer.Fetch.Default must be > 0")
case c.Consumer.Fetch.Max < 0:
return ConfigurationError("Consumer.Fetch.Max must be >= 0")
case c.Consumer.MaxWaitTime < 1*time.Millisecond:
return ConfigurationError("Consumer.MaxWaitTime must be >= 1ms")
case c.Consumer.MaxProcessingTime <= 0:
return ConfigurationError("Consumer.MaxProcessingTime must be > 0")
case c.Consumer.Retry.Backoff < 0:
return ConfigurationError("Consumer.Retry.Backoff must be >= 0")
case c.Consumer.Offsets.CommitInterval <= 0:
return ConfigurationError("Consumer.Offsets.CommitInterval must be > 0")
case c.Consumer.Offsets.Initial != OffsetOldest && c.Consumer.Offsets.Initial != OffsetNewest:
return ConfigurationError("Consumer.Offsets.Initial must be OffsetOldest or OffsetNewest")
}
// validate misc shared values
switch {
case c.ChannelBufferSize < 0:
return ConfigurationError("ChannelBufferSize must be >= 0")
case !validID.MatchString(c.ClientID):
return ConfigurationError("ClientID is invalid")
}
return nil
}

15
third/github.com/Shopify/sarama/config_resource_type.go Normal file
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package sarama
type ConfigResourceType int8
// Taken from :
// https://cwiki.apache.org/confluence/display/KAFKA/KIP-133%3A+Describe+and+Alter+Configs+Admin+APIs#KIP-133:DescribeandAlterConfigsAdminAPIs-WireFormattypes
const (
UnknownResource ConfigResourceType = 0
AnyResource ConfigResourceType = 1
TopicResource ConfigResourceType = 2
GroupResource ConfigResourceType = 3
ClusterResource ConfigResourceType = 4
BrokerResource ConfigResourceType = 5
)

233
third/github.com/Shopify/sarama/config_test.go Normal file
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package sarama
import (
"os"
"testing"
"gitee.com/johng/gf/third/github.com/rcrowley/go-metrics"
)
func TestDefaultConfigValidates(t *testing.T) {
config := NewConfig()
if err := config.Validate(); err != nil {
t.Error(err)
}
if config.MetricRegistry == nil {
t.Error("Expected non nil metrics.MetricRegistry, got nil")
}
}
func TestInvalidClientIDConfigValidates(t *testing.T) {
config := NewConfig()
config.ClientID = "foo:bar"
if err := config.Validate(); string(err.(ConfigurationError)) != "ClientID is invalid" {
t.Error("Expected invalid ClientID, got ", err)
}
}
func TestEmptyClientIDConfigValidates(t *testing.T) {
config := NewConfig()
config.ClientID = ""
if err := config.Validate(); string(err.(ConfigurationError)) != "ClientID is invalid" {
t.Error("Expected invalid ClientID, got ", err)
}
}
func TestNetConfigValidates(t *testing.T) {
tests := []struct {
name string
cfg func(*Config) // resorting to using a function as a param because of internal composite structs
err string
}{
{
"OpenRequests",
func(cfg *Config) {
cfg.Net.MaxOpenRequests = 0
},
"Net.MaxOpenRequests must be > 0"},
{"DialTimeout",
func(cfg *Config) {
cfg.Net.DialTimeout = 0
},
"Net.DialTimeout must be > 0"},
{"ReadTimeout",
func(cfg *Config) {
cfg.Net.ReadTimeout = 0
},
"Net.ReadTimeout must be > 0"},
{"WriteTimeout",
func(cfg *Config) {
cfg.Net.WriteTimeout = 0
},
"Net.WriteTimeout must be > 0"},
{"KeepAlive",
func(cfg *Config) {
cfg.Net.KeepAlive = -1
},
"Net.KeepAlive must be >= 0"},
{"SASL.User",
func(cfg *Config) {
cfg.Net.SASL.Enable = true
cfg.Net.SASL.User = ""
},
"Net.SASL.User must not be empty when SASL is enabled"},
{"SASL.Password",
func(cfg *Config) {
cfg.Net.SASL.Enable = true
cfg.Net.SASL.User = "user"
cfg.Net.SASL.Password = ""
},
"Net.SASL.Password must not be empty when SASL is enabled"},
}
for i, test := range tests {
c := NewConfig()
test.cfg(c)
if err := c.Validate(); string(err.(ConfigurationError)) != test.err {
t.Errorf("[%d]:[%s] Expected %s, Got %s\n", i, test.name, test.err, err)
}
}
}
func TestMetadataConfigValidates(t *testing.T) {
tests := []struct {
name string
cfg func(*Config) // resorting to using a function as a param because of internal composite structs
err string
}{
{
"Retry.Max",
func(cfg *Config) {
cfg.Metadata.Retry.Max = -1
},
"Metadata.Retry.Max must be >= 0"},
{"Retry.Backoff",
func(cfg *Config) {
cfg.Metadata.Retry.Backoff = -1
},
"Metadata.Retry.Backoff must be >= 0"},
{"RefreshFrequency",
func(cfg *Config) {
cfg.Metadata.RefreshFrequency = -1
},
"Metadata.RefreshFrequency must be >= 0"},
}
for i, test := range tests {
c := NewConfig()
test.cfg(c)
if err := c.Validate(); string(err.(ConfigurationError)) != test.err {
t.Errorf("[%d]:[%s] Expected %s, Got %s\n", i, test.name, test.err, err)
}
}
}
func TestProducerConfigValidates(t *testing.T) {
tests := []struct {
name string
cfg func(*Config) // resorting to using a function as a param because of internal composite structs
err string
}{
{
"MaxMessageBytes",
func(cfg *Config) {
cfg.Producer.MaxMessageBytes = 0
},
"Producer.MaxMessageBytes must be > 0"},
{"RequiredAcks",
func(cfg *Config) {
cfg.Producer.RequiredAcks = -2
},
"Producer.RequiredAcks must be >= -1"},
{"Timeout",
func(cfg *Config) {
cfg.Producer.Timeout = 0
},
"Producer.Timeout must be > 0"},
{"Partitioner",
func(cfg *Config) {
cfg.Producer.Partitioner = nil
},
"Producer.Partitioner must not be nil"},
{"Flush.Bytes",
func(cfg *Config) {
cfg.Producer.Flush.Bytes = -1
},
"Producer.Flush.Bytes must be >= 0"},
{"Flush.Messages",
func(cfg *Config) {
cfg.Producer.Flush.Messages = -1
},
"Producer.Flush.Messages must be >= 0"},
{"Flush.Frequency",
func(cfg *Config) {
cfg.Producer.Flush.Frequency = -1
},
"Producer.Flush.Frequency must be >= 0"},
{"Flush.MaxMessages",
func(cfg *Config) {
cfg.Producer.Flush.MaxMessages = -1
},
"Producer.Flush.MaxMessages must be >= 0"},
{"Flush.MaxMessages with Producer.Flush.Messages",
func(cfg *Config) {
cfg.Producer.Flush.MaxMessages = 1
cfg.Producer.Flush.Messages = 2
},
"Producer.Flush.MaxMessages must be >= Producer.Flush.Messages when set"},
{"Flush.Retry.Max",
func(cfg *Config) {
cfg.Producer.Retry.Max = -1
},
"Producer.Retry.Max must be >= 0"},
{"Flush.Retry.Backoff",
func(cfg *Config) {
cfg.Producer.Retry.Backoff = -1
},
"Producer.Retry.Backoff must be >= 0"},
}
for i, test := range tests {
c := NewConfig()
test.cfg(c)
if err := c.Validate(); string(err.(ConfigurationError)) != test.err {
t.Errorf("[%d]:[%s] Expected %s, Got %s\n", i, test.name, test.err, err)
}
}
}
func TestLZ4ConfigValidation(t *testing.T) {
config := NewConfig()
config.Producer.Compression = CompressionLZ4
if err := config.Validate(); string(err.(ConfigurationError)) != "lz4 compression requires Version >= V0_10_0_0" {
t.Error("Expected invalid lz4/kakfa version error, got ", err)
}
config.Version = V0_10_0_0
if err := config.Validate(); err != nil {
t.Error("Expected lz4 to work, got ", err)
}
}
// This example shows how to integrate with an existing registry as well as publishing metrics
// on the standard output
func ExampleConfig_metrics() {
// Our application registry
appMetricRegistry := metrics.NewRegistry()
appGauge := metrics.GetOrRegisterGauge("m1", appMetricRegistry)
appGauge.Update(1)
config := NewConfig()
// Use a prefix registry instead of the default local one
config.MetricRegistry = metrics.NewPrefixedChildRegistry(appMetricRegistry, "sarama.")
// Simulate a metric created by sarama without starting a broker
saramaGauge := metrics.GetOrRegisterGauge("m2", config.MetricRegistry)
saramaGauge.Update(2)
metrics.WriteOnce(appMetricRegistry, os.Stdout)
// Output:
// gauge m1
// value: 1
// gauge sarama.m2
// value: 2
}

807
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package sarama
import (
"errors"
"fmt"
"sync"
"sync/atomic"
"time"
)
// ConsumerMessage encapsulates a Kafka message returned by the consumer.
type ConsumerMessage struct {
Key, Value []byte
Topic string
Partition int32
Offset int64
Timestamp time.Time // only set if kafka is version 0.10+, inner message timestamp
BlockTimestamp time.Time // only set if kafka is version 0.10+, outer (compressed) block timestamp
Headers []*RecordHeader // only set if kafka is version 0.11+
}
// ConsumerError is what is provided to the user when an error occurs.
// It wraps an error and includes the topic and partition.
type ConsumerError struct {
Topic string
Partition int32
Err error
}
func (ce ConsumerError) Error() string {
return fmt.Sprintf("kafka: error while consuming %s/%d: %s", ce.Topic, ce.Partition, ce.Err)
}
// ConsumerErrors is a type that wraps a batch of errors and implements the Error interface.
// It can be returned from the PartitionConsumer's Close methods to avoid the need to manually drain errors
// when stopping.
type ConsumerErrors []*ConsumerError
func (ce ConsumerErrors) Error() string {
return fmt.Sprintf("kafka: %d errors while consuming", len(ce))
}
// Consumer manages PartitionConsumers which process Kafka messages from brokers. You MUST call Close()
// on a consumer to avoid leaks, it will not be garbage-collected automatically when it passes out of
// scope.
//
// Sarama's Consumer type does not currently support automatic consumer-group rebalancing and offset tracking.
// For Zookeeper-based tracking (Kafka 0.8.2 and earlier), the https://github.com/wvanbergen/kafka library
// builds on Sarama to add this support. For Kafka-based tracking (Kafka 0.9 and later), the
// https://github.com/bsm/sarama-cluster library builds on Sarama to add this support.
type Consumer interface {
// Topics returns the set of available topics as retrieved from the cluster
// metadata. This method is the same as Client.Topics(), and is provided for
// convenience.
Topics() ([]string, error)
// Partitions returns the sorted list of all partition IDs for the given topic.
// This method is the same as Client.Partitions(), and is provided for convenience.
Partitions(topic string) ([]int32, error)
// ConsumePartition creates a PartitionConsumer on the given topic/partition with
// the given offset. It will return an error if this Consumer is already consuming
// on the given topic/partition. Offset can be a literal offset, or OffsetNewest
// or OffsetOldest
ConsumePartition(topic string, partition int32, offset int64) (PartitionConsumer, error)
// HighWaterMarks returns the current high water marks for each topic and partition.
// Consistency between partitions is not guaranteed since high water marks are updated separately.
HighWaterMarks() map[string]map[int32]int64
// Close shuts down the consumer. It must be called after all child
// PartitionConsumers have already been closed.
Close() error
}
type consumer struct {
client Client
conf *Config
ownClient bool
lock sync.Mutex
children map[string]map[int32]*partitionConsumer
brokerConsumers map[*Broker]*brokerConsumer
}
// NewConsumer creates a new consumer using the given broker addresses and configuration.
func NewConsumer(addrs []string, config *Config) (Consumer, error) {
client, err := NewClient(addrs, config)
if err != nil {
return nil, err
}
c, err := NewConsumerFromClient(client)
if err != nil {
return nil, err
}
c.(*consumer).ownClient = true
return c, nil
}
// NewConsumerFromClient creates a new consumer using the given client. It is still
// necessary to call Close() on the underlying client when shutting down this consumer.
func NewConsumerFromClient(client Client) (Consumer, error) {
// Check that we are not dealing with a closed Client before processing any other arguments
if client.Closed() {
return nil, ErrClosedClient
}
c := &consumer{
client: client,
conf: client.Config(),
children: make(map[string]map[int32]*partitionConsumer),
brokerConsumers: make(map[*Broker]*brokerConsumer),
}
return c, nil
}
func (c *consumer) Close() error {
if c.ownClient {
return c.client.Close()
}
return nil
}
func (c *consumer) Topics() ([]string, error) {
return c.client.Topics()
}
func (c *consumer) Partitions(topic string) ([]int32, error) {
return c.client.Partitions(topic)
}
func (c *consumer) ConsumePartition(topic string, partition int32, offset int64) (PartitionConsumer, error) {
child := &partitionConsumer{
consumer: c,
conf: c.conf,
topic: topic,
partition: partition,
messages: make(chan *ConsumerMessage, c.conf.ChannelBufferSize),
errors: make(chan *ConsumerError, c.conf.ChannelBufferSize),
feeder: make(chan *FetchResponse, 1),
trigger: make(chan none, 1),
dying: make(chan none),
fetchSize: c.conf.Consumer.Fetch.Default,
}
if err := child.chooseStartingOffset(offset); err != nil {
return nil, err
}
var leader *Broker
var err error
if leader, err = c.client.Leader(child.topic, child.partition); err != nil {
return nil, err
}
if err := c.addChild(child); err != nil {
return nil, err
}
go withRecover(child.dispatcher)
go withRecover(child.responseFeeder)
child.broker = c.refBrokerConsumer(leader)
child.broker.input <- child
return child, nil
}
func (c *consumer) HighWaterMarks() map[string]map[int32]int64 {
c.lock.Lock()
defer c.lock.Unlock()
hwms := make(map[string]map[int32]int64)
for topic, p := range c.children {
hwm := make(map[int32]int64, len(p))
for partition, pc := range p {
hwm[partition] = pc.HighWaterMarkOffset()
}
hwms[topic] = hwm
}
return hwms
}
func (c *consumer) addChild(child *partitionConsumer) error {
c.lock.Lock()
defer c.lock.Unlock()
topicChildren := c.children[child.topic]
if topicChildren == nil {
topicChildren = make(map[int32]*partitionConsumer)
c.children[child.topic] = topicChildren
}
if topicChildren[child.partition] != nil {
return ConfigurationError("That topic/partition is already being consumed")
}
topicChildren[child.partition] = child
return nil
}
func (c *consumer) removeChild(child *partitionConsumer) {
c.lock.Lock()
defer c.lock.Unlock()
delete(c.children[child.topic], child.partition)
}
func (c *consumer) refBrokerConsumer(broker *Broker) *brokerConsumer {
c.lock.Lock()
defer c.lock.Unlock()
bc := c.brokerConsumers[broker]
if bc == nil {
bc = c.newBrokerConsumer(broker)
c.brokerConsumers[broker] = bc
}
bc.refs++
return bc
}
func (c *consumer) unrefBrokerConsumer(brokerWorker *brokerConsumer) {
c.lock.Lock()
defer c.lock.Unlock()
brokerWorker.refs--
if brokerWorker.refs == 0 {
close(brokerWorker.input)
if c.brokerConsumers[brokerWorker.broker] == brokerWorker {
delete(c.brokerConsumers, brokerWorker.broker)
}
}
}
func (c *consumer) abandonBrokerConsumer(brokerWorker *brokerConsumer) {
c.lock.Lock()
defer c.lock.Unlock()
delete(c.brokerConsumers, brokerWorker.broker)
}
// PartitionConsumer
// PartitionConsumer processes Kafka messages from a given topic and partition. You MUST call one of Close() or
// AsyncClose() on a PartitionConsumer to avoid leaks; it will not be garbage-collected automatically when it passes out
// of scope.
//
// The simplest way of using a PartitionConsumer is to loop over its Messages channel using a for/range
// loop. The PartitionConsumer will only stop itself in one case: when the offset being consumed is reported
// as out of range by the brokers. In this case you should decide what you want to do (try a different offset,
// notify a human, etc) and handle it appropriately. For all other error cases, it will just keep retrying.
// By default, it logs these errors to sarama.Logger; if you want to be notified directly of all errors, set
// your config's Consumer.Return.Errors to true and read from the Errors channel, using a select statement
// or a separate goroutine. Check out the Consumer examples to see implementations of these different approaches.
//
// To terminate such a for/range loop while the loop is executing, call AsyncClose. This will kick off the process of
// consumer tear-down & return imediately. Continue to loop, servicing the Messages channel until the teardown process
// AsyncClose initiated closes it (thus terminating the for/range loop). If you've already ceased reading Messages, call
// Close; this will signal the PartitionConsumer's goroutines to begin shutting down (just like AsyncClose), but will
// also drain the Messages channel, harvest all errors & return them once cleanup has completed.
type PartitionConsumer interface {
// AsyncClose initiates a shutdown of the PartitionConsumer. This method will return immediately, after which you
// should continue to service the 'Messages' and 'Errors' channels until they are empty. It is required to call this
// function, or Close before a consumer object passes out of scope, as it will otherwise leak memory. You must call
// this before calling Close on the underlying client.
AsyncClose()
// Close stops the PartitionConsumer from fetching messages. It will initiate a shutdown just like AsyncClose, drain
// the Messages channel, harvest any errors & return them to the caller. Note that if you are continuing to service
// the Messages channel when this function is called, you will be competing with Close for messages; consider
// calling AsyncClose, instead. It is required to call this function (or AsyncClose) before a consumer object passes
// out of scope, as it will otherwise leak memory. You must call this before calling Close on the underlying client.
Close() error
// Messages returns the read channel for the messages that are returned by
// the broker.
Messages() <-chan *ConsumerMessage
// Errors returns a read channel of errors that occurred during consuming, if
// enabled. By default, errors are logged and not returned over this channel.
// If you want to implement any custom error handling, set your config's
// Consumer.Return.Errors setting to true, and read from this channel.
Errors() <-chan *ConsumerError
// HighWaterMarkOffset returns the high water mark offset of the partition,
// i.e. the offset that will be used for the next message that will be produced.
// You can use this to determine how far behind the processing is.
HighWaterMarkOffset() int64
}
type partitionConsumer struct {
highWaterMarkOffset int64 // must be at the top of the struct because https://golang.org/pkg/sync/atomic/#pkg-note-BUG
consumer *consumer
conf *Config
topic string
partition int32
broker *brokerConsumer
messages chan *ConsumerMessage
errors chan *ConsumerError
feeder chan *FetchResponse
trigger, dying chan none
responseResult error
closeOnce sync.Once
fetchSize int32
offset int64
}
var errTimedOut = errors.New("timed out feeding messages to the user") // not user-facing
func (child *partitionConsumer) sendError(err error) {
cErr := &ConsumerError{
Topic: child.topic,
Partition: child.partition,
Err: err,
}
if child.conf.Consumer.Return.Errors {
child.errors <- cErr
} else {
Logger.Println(cErr)
}
}
func (child *partitionConsumer) dispatcher() {
for range child.trigger {
select {
case <-child.dying:
close(child.trigger)
case <-time.After(child.conf.Consumer.Retry.Backoff):
if child.broker != nil {
child.consumer.unrefBrokerConsumer(child.broker)
child.broker = nil
}
Logger.Printf("consumer/%s/%d finding new broker\n", child.topic, child.partition)
if err := child.dispatch(); err != nil {
child.sendError(err)
child.trigger <- none{}
}
}
}
if child.broker != nil {
child.consumer.unrefBrokerConsumer(child.broker)
}
child.consumer.removeChild(child)
close(child.feeder)
}
func (child *partitionConsumer) dispatch() error {
if err := child.consumer.client.RefreshMetadata(child.topic); err != nil {
return err
}
var leader *Broker
var err error
if leader, err = child.consumer.client.Leader(child.topic, child.partition); err != nil {
return err
}
child.broker = child.consumer.refBrokerConsumer(leader)
child.broker.input <- child
return nil
}
func (child *partitionConsumer) chooseStartingOffset(offset int64) error {
newestOffset, err := child.consumer.client.GetOffset(child.topic, child.partition, OffsetNewest)
if err != nil {
return err
}
oldestOffset, err := child.consumer.client.GetOffset(child.topic, child.partition, OffsetOldest)
if err != nil {
return err
}
switch {
case offset == OffsetNewest:
child.offset = newestOffset
case offset == OffsetOldest:
child.offset = oldestOffset
case offset >= oldestOffset && offset <= newestOffset:
child.offset = offset
default:
return ErrOffsetOutOfRange
}
return nil
}
func (child *partitionConsumer) Messages() <-chan *ConsumerMessage {
return child.messages
}
func (child *partitionConsumer) Errors() <-chan *ConsumerError {
return child.errors
}
func (child *partitionConsumer) AsyncClose() {
// this triggers whatever broker owns this child to abandon it and close its trigger channel, which causes
// the dispatcher to exit its loop, which removes it from the consumer then closes its 'messages' and
// 'errors' channel (alternatively, if the child is already at the dispatcher for some reason, that will
// also just close itself)
child.closeOnce.Do(func() {
close(child.dying)
})
}
func (child *partitionConsumer) Close() error {
child.AsyncClose()
go withRecover(func() {
for range child.messages {
// drain
}
})
var errors ConsumerErrors
for err := range child.errors {
errors = append(errors, err)
}
if len(errors) > 0 {
return errors
}
return nil
}
func (child *partitionConsumer) HighWaterMarkOffset() int64 {
return atomic.LoadInt64(&child.highWaterMarkOffset)
}
func (child *partitionConsumer) responseFeeder() {
var msgs []*ConsumerMessage
expiryTicker := time.NewTicker(child.conf.Consumer.MaxProcessingTime)
firstAttempt := true
feederLoop:
for response := range child.feeder {
msgs, child.responseResult = child.parseResponse(response)
for i, msg := range msgs {
messageSelect:
select {
case child.messages <- msg:
firstAttempt = true
case <-expiryTicker.C:
if !firstAttempt {
child.responseResult = errTimedOut
child.broker.acks.Done()
for _, msg = range msgs[i:] {
child.messages <- msg
}
child.broker.input <- child
continue feederLoop
} else {
// current message has not been sent, return to select
// statement
firstAttempt = false
goto messageSelect
}
}
}
child.broker.acks.Done()
}
expiryTicker.Stop()
close(child.messages)
close(child.errors)
}
func (child *partitionConsumer) parseMessages(msgSet *MessageSet) ([]*ConsumerMessage, error) {
var messages []*ConsumerMessage
for _, msgBlock := range msgSet.Messages {
for _, msg := range msgBlock.Messages() {
offset := msg.Offset
if msg.Msg.Version >= 1 {
baseOffset := msgBlock.Offset - msgBlock.Messages()[len(msgBlock.Messages())-1].Offset
offset += baseOffset
}
if offset < child.offset {
continue
}
messages = append(messages, &ConsumerMessage{
Topic: child.topic,
Partition: child.partition,
Key: msg.Msg.Key,
Value: msg.Msg.Value,
Offset: offset,
Timestamp: msg.Msg.Timestamp,
BlockTimestamp: msgBlock.Msg.Timestamp,
})
child.offset = offset + 1
}
}
if len(messages) == 0 {
return nil, ErrIncompleteResponse
}
return messages, nil
}
func (child *partitionConsumer) parseRecords(batch *RecordBatch) ([]*ConsumerMessage, error) {
var messages []*ConsumerMessage
for _, rec := range batch.Records {
offset := batch.FirstOffset + rec.OffsetDelta
if offset < child.offset {
continue
}
messages = append(messages, &ConsumerMessage{
Topic: child.topic,
Partition: child.partition,
Key: rec.Key,
Value: rec.Value,
Offset: offset,
Timestamp: batch.FirstTimestamp.Add(rec.TimestampDelta),
Headers: rec.Headers,
})
child.offset = offset + 1
}
if len(messages) == 0 {
child.offset += 1
}
return messages, nil
}
func (child *partitionConsumer) parseResponse(response *FetchResponse) ([]*ConsumerMessage, error) {
block := response.GetBlock(child.topic, child.partition)
if block == nil {
return nil, ErrIncompleteResponse
}
if block.Err != ErrNoError {
return nil, block.Err
}
nRecs, err := block.numRecords()
if err != nil {
return nil, err
}
if nRecs == 0 {
partialTrailingMessage, err := block.isPartial()
if err != nil {
return nil, err
}
// We got no messages. If we got a trailing one then we need to ask for more data.
// Otherwise we just poll again and wait for one to be produced...
if partialTrailingMessage {
if child.conf.Consumer.Fetch.Max > 0 && child.fetchSize == child.conf.Consumer.Fetch.Max {
// we can't ask for more data, we've hit the configured limit
child.sendError(ErrMessageTooLarge)
child.offset++ // skip this one so we can keep processing future messages
} else {
child.fetchSize *= 2
if child.conf.Consumer.Fetch.Max > 0 && child.fetchSize > child.conf.Consumer.Fetch.Max {
child.fetchSize = child.conf.Consumer.Fetch.Max
}
}
}
return nil, nil
}
// we got messages, reset our fetch size in case it was increased for a previous request
child.fetchSize = child.conf.Consumer.Fetch.Default
atomic.StoreInt64(&child.highWaterMarkOffset, block.HighWaterMarkOffset)
messages := []*ConsumerMessage{}
for _, records := range block.RecordsSet {
switch records.recordsType {
case legacyRecords:
messageSetMessages, err := child.parseMessages(records.MsgSet)
if err != nil {
return nil, err
}
messages = append(messages, messageSetMessages...)
case defaultRecords:
recordBatchMessages, err := child.parseRecords(records.RecordBatch)
if err != nil {
return nil, err
}
if control, err := records.isControl(); err != nil || control {
continue
}
messages = append(messages, recordBatchMessages...)
default:
return nil, fmt.Errorf("unknown records type: %v", records.recordsType)
}
}
return messages, nil
}
// brokerConsumer
type brokerConsumer struct {
consumer *consumer
broker *Broker
input chan *partitionConsumer
newSubscriptions chan []*partitionConsumer
wait chan none
subscriptions map[*partitionConsumer]none
acks sync.WaitGroup
refs int
}
func (c *consumer) newBrokerConsumer(broker *Broker) *brokerConsumer {
bc := &brokerConsumer{
consumer: c,
broker: broker,
input: make(chan *partitionConsumer),
newSubscriptions: make(chan []*partitionConsumer),
wait: make(chan none),
subscriptions: make(map[*partitionConsumer]none),
refs: 0,
}
go withRecover(bc.subscriptionManager)
go withRecover(bc.subscriptionConsumer)
return bc
}
func (bc *brokerConsumer) subscriptionManager() {
var buffer []*partitionConsumer
// The subscriptionManager constantly accepts new subscriptions on `input` (even when the main subscriptionConsumer
// goroutine is in the middle of a network request) and batches it up. The main worker goroutine picks
// up a batch of new subscriptions between every network request by reading from `newSubscriptions`, so we give
// it nil if no new subscriptions are available. We also write to `wait` only when new subscriptions is available,
// so the main goroutine can block waiting for work if it has none.
for {
if len(buffer) > 0 {
select {
case event, ok := <-bc.input:
if !ok {
goto done
}
buffer = append(buffer, event)
case bc.newSubscriptions <- buffer:
buffer = nil
case bc.wait <- none{}:
}
} else {
select {
case event, ok := <-bc.input:
if !ok {
goto done
}
buffer = append(buffer, event)
case bc.newSubscriptions <- nil:
}
}
}
done:
close(bc.wait)
if len(buffer) > 0 {
bc.newSubscriptions <- buffer
}
close(bc.newSubscriptions)
}
func (bc *brokerConsumer) subscriptionConsumer() {
<-bc.wait // wait for our first piece of work
// the subscriptionConsumer ensures we will get nil right away if no new subscriptions is available
for newSubscriptions := range bc.newSubscriptions {
bc.updateSubscriptions(newSubscriptions)
if len(bc.subscriptions) == 0 {
// We're about to be shut down or we're about to receive more subscriptions.
// Either way, the signal just hasn't propagated to our goroutine yet.
<-bc.wait
continue
}
response, err := bc.fetchNewMessages()
if err != nil {
Logger.Printf("consumer/broker/%d disconnecting due to error processing FetchRequest: %s\n", bc.broker.ID(), err)
bc.abort(err)
return
}
bc.acks.Add(len(bc.subscriptions))
for child := range bc.subscriptions {
child.feeder <- response
}
bc.acks.Wait()
bc.handleResponses()
}
}
func (bc *brokerConsumer) updateSubscriptions(newSubscriptions []*partitionConsumer) {
for _, child := range newSubscriptions {
bc.subscriptions[child] = none{}
Logger.Printf("consumer/broker/%d added subscription to %s/%d\n", bc.broker.ID(), child.topic, child.partition)
}
for child := range bc.subscriptions {
select {
case <-child.dying:
Logger.Printf("consumer/broker/%d closed dead subscription to %s/%d\n", bc.broker.ID(), child.topic, child.partition)
close(child.trigger)
delete(bc.subscriptions, child)
default:
break
}
}
}
func (bc *brokerConsumer) handleResponses() {
// handles the response codes left for us by our subscriptions, and abandons ones that have been closed
for child := range bc.subscriptions {
result := child.responseResult
child.responseResult = nil
switch result {
case nil:
break
case errTimedOut:
Logger.Printf("consumer/broker/%d abandoned subscription to %s/%d because consuming was taking too long\n",
bc.broker.ID(), child.topic, child.partition)
delete(bc.subscriptions, child)
case ErrOffsetOutOfRange:
// there's no point in retrying this it will just fail the same way again
// shut it down and force the user to choose what to do
child.sendError(result)
Logger.Printf("consumer/%s/%d shutting down because %s\n", child.topic, child.partition, result)
close(child.trigger)
delete(bc.subscriptions, child)
case ErrUnknownTopicOrPartition, ErrNotLeaderForPartition, ErrLeaderNotAvailable, ErrReplicaNotAvailable:
// not an error, but does need redispatching
Logger.Printf("consumer/broker/%d abandoned subscription to %s/%d because %s\n",
bc.broker.ID(), child.topic, child.partition, result)
child.trigger <- none{}
delete(bc.subscriptions, child)
default:
// dunno, tell the user and try redispatching
child.sendError(result)
Logger.Printf("consumer/broker/%d abandoned subscription to %s/%d because %s\n",
bc.broker.ID(), child.topic, child.partition, result)
child.trigger <- none{}
delete(bc.subscriptions, child)
}
}
}
func (bc *brokerConsumer) abort(err error) {
bc.consumer.abandonBrokerConsumer(bc)
_ = bc.broker.Close() // we don't care about the error this might return, we already have one
for child := range bc.subscriptions {
child.sendError(err)
child.trigger <- none{}
}
for newSubscriptions := range bc.newSubscriptions {
if len(newSubscriptions) == 0 {
<-bc.wait
continue
}
for _, child := range newSubscriptions {
child.sendError(err)
child.trigger <- none{}
}
}
}
func (bc *brokerConsumer) fetchNewMessages() (*FetchResponse, error) {
request := &FetchRequest{
MinBytes: bc.consumer.conf.Consumer.Fetch.Min,
MaxWaitTime: int32(bc.consumer.conf.Consumer.MaxWaitTime / time.Millisecond),
}
if bc.consumer.conf.Version.IsAtLeast(V0_10_0_0) {
request.Version = 2
}
if bc.consumer.conf.Version.IsAtLeast(V0_10_1_0) {
request.Version = 3
request.MaxBytes = MaxResponseSize
}
if bc.consumer.conf.Version.IsAtLeast(V0_11_0_0) {
request.Version = 4
request.Isolation = ReadUncommitted // We don't support yet transactions.
}
for child := range bc.subscriptions {
request.AddBlock(child.topic, child.partition, child.offset, child.fetchSize)
}
return bc.broker.Fetch(request)
}

94
third/github.com/Shopify/sarama/consumer_group_members.go Normal file
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package sarama
type ConsumerGroupMemberMetadata struct {
Version int16
Topics []string
UserData []byte
}
func (m *ConsumerGroupMemberMetadata) encode(pe packetEncoder) error {
pe.putInt16(m.Version)
if err := pe.putStringArray(m.Topics); err != nil {
return err
}
if err := pe.putBytes(m.UserData); err != nil {
return err
}
return nil
}
func (m *ConsumerGroupMemberMetadata) decode(pd packetDecoder) (err error) {
if m.Version, err = pd.getInt16(); err != nil {
return
}
if m.Topics, err = pd.getStringArray(); err != nil {
return
}
if m.UserData, err = pd.getBytes(); err != nil {
return
}
return nil
}
type ConsumerGroupMemberAssignment struct {
Version int16
Topics map[string][]int32
UserData []byte
}
func (m *ConsumerGroupMemberAssignment) encode(pe packetEncoder) error {
pe.putInt16(m.Version)
if err := pe.putArrayLength(len(m.Topics)); err != nil {
return err
}
for topic, partitions := range m.Topics {
if err := pe.putString(topic); err != nil {
return err
}
if err := pe.putInt32Array(partitions); err != nil {
return err
}
}
if err := pe.putBytes(m.UserData); err != nil {
return err
}
return nil
}
func (m *ConsumerGroupMemberAssignment) decode(pd packetDecoder) (err error) {
if m.Version, err = pd.getInt16(); err != nil {
return
}
var topicLen int
if topicLen, err = pd.getArrayLength(); err != nil {
return
}
m.Topics = make(map[string][]int32, topicLen)
for i := 0; i < topicLen; i++ {
var topic string
if topic, err = pd.getString(); err != nil {
return
}
if m.Topics[topic], err = pd.getInt32Array(); err != nil {
return
}
}
if m.UserData, err = pd.getBytes(); err != nil {
return
}
return nil
}

73
third/github.com/Shopify/sarama/consumer_group_members_test.go Normal file
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package sarama
import (
"bytes"
"reflect"
"testing"
)
var (
groupMemberMetadata = []byte{
0, 1, // Version
0, 0, 0, 2, // Topic array length
0, 3, 'o', 'n', 'e', // Topic one
0, 3, 't', 'w', 'o', // Topic two
0, 0, 0, 3, 0x01, 0x02, 0x03, // Userdata
}
groupMemberAssignment = []byte{
0, 1, // Version
0, 0, 0, 1, // Topic array length
0, 3, 'o', 'n', 'e', // Topic one
0, 0, 0, 3, // Topic one, partition array length
0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 4, // 0, 2, 4
0, 0, 0, 3, 0x01, 0x02, 0x03, // Userdata
}
)
func TestConsumerGroupMemberMetadata(t *testing.T) {
meta := &ConsumerGroupMemberMetadata{
Version: 1,
Topics: []string{"one", "two"},
UserData: []byte{0x01, 0x02, 0x03},
}
buf, err := encode(meta, nil)
if err != nil {
t.Error("Failed to encode data", err)
} else if !bytes.Equal(groupMemberMetadata, buf) {
t.Errorf("Encoded data does not match expectation\nexpected: %v\nactual: %v", groupMemberMetadata, buf)
}
meta2 := new(ConsumerGroupMemberMetadata)
err = decode(buf, meta2)
if err != nil {
t.Error("Failed to decode data", err)
} else if !reflect.DeepEqual(meta, meta2) {
t.Errorf("Encoded data does not match expectation\nexpected: %v\nactual: %v", meta, meta2)
}
}
func TestConsumerGroupMemberAssignment(t *testing.T) {
amt := &ConsumerGroupMemberAssignment{
Version: 1,
Topics: map[string][]int32{
"one": {0, 2, 4},
},
UserData: []byte{0x01, 0x02, 0x03},
}
buf, err := encode(amt, nil)
if err != nil {
t.Error("Failed to encode data", err)
} else if !bytes.Equal(groupMemberAssignment, buf) {
t.Errorf("Encoded data does not match expectation\nexpected: %v\nactual: %v", groupMemberAssignment, buf)
}
amt2 := new(ConsumerGroupMemberAssignment)
err = decode(buf, amt2)
if err != nil {
t.Error("Failed to decode data", err)
} else if !reflect.DeepEqual(amt, amt2) {
t.Errorf("Encoded data does not match expectation\nexpected: %v\nactual: %v", amt, amt2)
}
}

33
third/github.com/Shopify/sarama/consumer_metadata_request.go Normal file
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package sarama
type ConsumerMetadataRequest struct {
ConsumerGroup string
}
func (r *ConsumerMetadataRequest) encode(pe packetEncoder) error {
tmp := new(FindCoordinatorRequest)
tmp.CoordinatorKey = r.ConsumerGroup
tmp.CoordinatorType = CoordinatorGroup
return tmp.encode(pe)
}
func (r *ConsumerMetadataRequest) decode(pd packetDecoder, version int16) (err error) {
tmp := new(FindCoordinatorRequest)
if err := tmp.decode(pd, version); err != nil {
return err
}
r.ConsumerGroup = tmp.CoordinatorKey
return nil
}
func (r *ConsumerMetadataRequest) key() int16 {
return 10
}
func (r *ConsumerMetadataRequest) version() int16 {
return 0
}
func (r *ConsumerMetadataRequest) requiredVersion() KafkaVersion {
return V0_8_2_0
}

23
third/github.com/Shopify/sarama/consumer_metadata_request_test.go Normal file
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package sarama
import (
"testing"
)
var (
consumerMetadataRequestEmpty = []byte{
0x00, 0x00}
consumerMetadataRequestString = []byte{
0x00, 0x06, 'f', 'o', 'o', 'b', 'a', 'r'}
)
func TestConsumerMetadataRequest(t *testing.T) {
request := new(ConsumerMetadataRequest)
testEncodable(t, "empty string", request, consumerMetadataRequestEmpty)
testVersionDecodable(t, "empty string", request, consumerMetadataRequestEmpty, 0)
request.ConsumerGroup = "foobar"
testEncodable(t, "with string", request, consumerMetadataRequestString)
testVersionDecodable(t, "with string", request, consumerMetadataRequestString, 0)
}

77
third/github.com/Shopify/sarama/consumer_metadata_response.go Normal file
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package sarama
import (
"net"
"strconv"
)
type ConsumerMetadataResponse struct {
Err KError
Coordinator *Broker
CoordinatorID int32 // deprecated: use Coordinator.ID()
CoordinatorHost string // deprecated: use Coordinator.Addr()
CoordinatorPort int32 // deprecated: use Coordinator.Addr()
}
func (r *ConsumerMetadataResponse) decode(pd packetDecoder, version int16) (err error) {
tmp := new(FindCoordinatorResponse)
if err := tmp.decode(pd, version); err != nil {
return err
}
r.Err = tmp.Err
r.Coordinator = tmp.Coordinator
if tmp.Coordinator == nil {
return nil
}
// this can all go away in 2.0, but we have to fill in deprecated fields to maintain
// backwards compatibility
host, portstr, err := net.SplitHostPort(r.Coordinator.Addr())
if err != nil {
return err
}
port, err := strconv.ParseInt(portstr, 10, 32)
if err != nil {
return err
}
r.CoordinatorID = r.Coordinator.ID()
r.CoordinatorHost = host
r.CoordinatorPort = int32(port)
return nil
}
func (r *ConsumerMetadataResponse) encode(pe packetEncoder) error {
if r.Coordinator == nil {
r.Coordinator = new(Broker)
r.Coordinator.id = r.CoordinatorID
r.Coordinator.addr = net.JoinHostPort(r.CoordinatorHost, strconv.Itoa(int(r.CoordinatorPort)))
}
tmp := &FindCoordinatorResponse{
Version: 0,
Err: r.Err,
Coordinator: r.Coordinator,
}
if err := tmp.encode(pe); err != nil {
return err
}
return nil
}
func (r *ConsumerMetadataResponse) key() int16 {
return 10
}
func (r *ConsumerMetadataResponse) version() int16 {
return 0
}
func (r *ConsumerMetadataResponse) requiredVersion() KafkaVersion {
return V0_8_2_0
}

44
third/github.com/Shopify/sarama/consumer_metadata_response_test.go Normal file
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package sarama
import "testing"
var (
consumerMetadataResponseError = []byte{
0x00, 0x0E,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00,
0x00, 0x00, 0x00, 0x00}
consumerMetadataResponseSuccess = []byte{
0x00, 0x00,
0x00, 0x00, 0x00, 0xAB,
0x00, 0x03, 'f', 'o', 'o',
0x00, 0x00, 0xCC, 0xDD}
)
func TestConsumerMetadataResponseError(t *testing.T) {
response := &ConsumerMetadataResponse{Err: ErrOffsetsLoadInProgress}
testEncodable(t, "", response, consumerMetadataResponseError)
decodedResp := &ConsumerMetadataResponse{}
if err := versionedDecode(consumerMetadataResponseError, decodedResp, 0); err != nil {
t.Error("could not decode: ", err)
}
if decodedResp.Err != ErrOffsetsLoadInProgress {
t.Errorf("got %s, want %s", decodedResp.Err, ErrOffsetsLoadInProgress)
}
}
func TestConsumerMetadataResponseSuccess(t *testing.T) {
broker := NewBroker("foo:52445")
broker.id = 0xAB
response := ConsumerMetadataResponse{
Coordinator: broker,
CoordinatorID: 0xAB,
CoordinatorHost: "foo",
CoordinatorPort: 0xCCDD,
Err: ErrNoError,
}
testResponse(t, "success", &response, consumerMetadataResponseSuccess)
}

1036
third/github.com/Shopify/sarama/consumer_test.go Normal file
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69
third/github.com/Shopify/sarama/crc32_field.go Normal file
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package sarama
import (
"encoding/binary"
"fmt"
"hash/crc32"
)
type crcPolynomial int8
const (
crcIEEE crcPolynomial = iota
crcCastagnoli
)
var castagnoliTable = crc32.MakeTable(crc32.Castagnoli)
// crc32Field implements the pushEncoder and pushDecoder interfaces for calculating CRC32s.
type crc32Field struct {
startOffset int
polynomial crcPolynomial
}
func (c *crc32Field) saveOffset(in int) {
c.startOffset = in
}
func (c *crc32Field) reserveLength() int {
return 4
}
func newCRC32Field(polynomial crcPolynomial) *crc32Field {
return &crc32Field{polynomial: polynomial}
}
func (c *crc32Field) run(curOffset int, buf []byte) error {
crc, err := c.crc(curOffset, buf)
if err != nil {
return err
}
binary.BigEndian.PutUint32(buf[c.startOffset:], crc)
return nil
}
func (c *crc32Field) check(curOffset int, buf []byte) error {
crc, err := c.crc(curOffset, buf)
if err != nil {
return err
}
expected := binary.BigEndian.Uint32(buf[c.startOffset:])
if crc != expected {
return PacketDecodingError{fmt.Sprintf("CRC didn't match expected %#x got %#x", expected, crc)}
}
return nil
}
func (c *crc32Field) crc(curOffset int, buf []byte) (uint32, error) {
var tab *crc32.Table
switch c.polynomial {
case crcIEEE:
tab = crc32.IEEETable
case crcCastagnoli:
tab = castagnoliTable
default:
return 0, PacketDecodingError{"invalid CRC type"}
}
return crc32.Checksum(buf[c.startOffset+4:curOffset], tab), nil
}

121
third/github.com/Shopify/sarama/create_partitions_request.go Normal file
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package sarama
import "time"
type CreatePartitionsRequest struct {
TopicPartitions map[string]*TopicPartition
Timeout time.Duration
ValidateOnly bool
}
func (c *CreatePartitionsRequest) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(c.TopicPartitions)); err != nil {
return err
}
for topic, partition := range c.TopicPartitions {
if err := pe.putString(topic); err != nil {
return err
}
if err := partition.encode(pe); err != nil {
return err
}
}
pe.putInt32(int32(c.Timeout / time.Millisecond))
pe.putBool(c.ValidateOnly)
return nil
}
func (c *CreatePartitionsRequest) decode(pd packetDecoder, version int16) (err error) {
n, err := pd.getArrayLength()
if err != nil {
return err
}
c.TopicPartitions = make(map[string]*TopicPartition, n)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
c.TopicPartitions[topic] = new(TopicPartition)
if err := c.TopicPartitions[topic].decode(pd, version); err != nil {
return err
}
}
timeout, err := pd.getInt32()
if err != nil {
return err
}
c.Timeout = time.Duration(timeout) * time.Millisecond
if c.ValidateOnly, err = pd.getBool(); err != nil {
return err
}
return nil
}
func (r *CreatePartitionsRequest) key() int16 {
return 37
}
func (r *CreatePartitionsRequest) version() int16 {
return 0
}
func (r *CreatePartitionsRequest) requiredVersion() KafkaVersion {
return V1_0_0_0
}
type TopicPartition struct {
Count int32
Assignment [][]int32
}
func (t *TopicPartition) encode(pe packetEncoder) error {
pe.putInt32(t.Count)
if len(t.Assignment) == 0 {
pe.putInt32(-1)
return nil
}
if err := pe.putArrayLength(len(t.Assignment)); err != nil {
return err
}
for _, assign := range t.Assignment {
if err := pe.putInt32Array(assign); err != nil {
return err
}
}
return nil
}
func (t *TopicPartition) decode(pd packetDecoder, version int16) (err error) {
if t.Count, err = pd.getInt32(); err != nil {
return err
}
n, err := pd.getInt32()
if err != nil {
return err
}
if n <= 0 {
return nil
}
t.Assignment = make([][]int32, n)
for i := 0; i < int(n); i++ {
if t.Assignment[i], err = pd.getInt32Array(); err != nil {
return err
}
}
return nil
}

50
third/github.com/Shopify/sarama/create_partitions_request_test.go Normal file
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package sarama
import (
"testing"
"time"
)
var (
createPartitionRequestNoAssignment = []byte{
0, 0, 0, 1, // one topic
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0, 0, 3, // 3 partitions
255, 255, 255, 255, // no assignments
0, 0, 0, 100, // timeout
0, // validate only = false
}
createPartitionRequestAssignment = []byte{
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0, 0, 3, // 3 partitions
0, 0, 0, 2,
0, 0, 0, 2,
0, 0, 0, 2, 0, 0, 0, 3,
0, 0, 0, 2,
0, 0, 0, 3, 0, 0, 0, 1,
0, 0, 0, 100,
1, // validate only = true
}
)
func TestCreatePartitionsRequest(t *testing.T) {
req := &CreatePartitionsRequest{
TopicPartitions: map[string]*TopicPartition{
"topic": &TopicPartition{
Count: 3,
},
},
Timeout: 100 * time.Millisecond,
}
buf := testRequestEncode(t, "no assignment", req, createPartitionRequestNoAssignment)
testRequestDecode(t, "no assignment", req, buf)
req.ValidateOnly = true
req.TopicPartitions["topic"].Assignment = [][]int32{{2, 3}, {3, 1}}
buf = testRequestEncode(t, "assignment", req, createPartitionRequestAssignment)
testRequestDecode(t, "assignment", req, buf)
}

94
third/github.com/Shopify/sarama/create_partitions_response.go Normal file
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@ -0,0 +1,94 @@
package sarama
import "time"
type CreatePartitionsResponse struct {
ThrottleTime time.Duration
TopicPartitionErrors map[string]*TopicPartitionError
}
func (c *CreatePartitionsResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(c.ThrottleTime / time.Millisecond))
if err := pe.putArrayLength(len(c.TopicPartitionErrors)); err != nil {
return err
}
for topic, partitionError := range c.TopicPartitionErrors {
if err := pe.putString(topic); err != nil {
return err
}
if err := partitionError.encode(pe); err != nil {
return err
}
}
return nil
}
func (c *CreatePartitionsResponse) decode(pd packetDecoder, version int16) (err error) {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
c.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
n, err := pd.getArrayLength()
if err != nil {
return err
}
c.TopicPartitionErrors = make(map[string]*TopicPartitionError, n)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
c.TopicPartitionErrors[topic] = new(TopicPartitionError)
if err := c.TopicPartitionErrors[topic].decode(pd, version); err != nil {
return err
}
}
return nil
}
func (r *CreatePartitionsResponse) key() int16 {
return 37
}
func (r *CreatePartitionsResponse) version() int16 {
return 0
}
func (r *CreatePartitionsResponse) requiredVersion() KafkaVersion {
return V1_0_0_0
}
type TopicPartitionError struct {
Err KError
ErrMsg *string
}
func (t *TopicPartitionError) encode(pe packetEncoder) error {
pe.putInt16(int16(t.Err))
if err := pe.putNullableString(t.ErrMsg); err != nil {
return err
}
return nil
}
func (t *TopicPartitionError) decode(pd packetDecoder, version int16) (err error) {
kerr, err := pd.getInt16()
if err != nil {
return err
}
t.Err = KError(kerr)
if t.ErrMsg, err = pd.getNullableString(); err != nil {
return err
}
return nil
}

52
third/github.com/Shopify/sarama/create_partitions_response_test.go Normal file
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package sarama
import (
"reflect"
"testing"
"time"
)
var (
createPartitionResponseSuccess = []byte{
0, 0, 0, 100, // throttleTimeMs
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0, // no error
255, 255, // no error message
}
createPartitionResponseFail = []byte{
0, 0, 0, 100, // throttleTimeMs
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 37, // partition error
0, 5, 'e', 'r', 'r', 'o', 'r',
}
)
func TestCreatePartitionsResponse(t *testing.T) {
resp := &CreatePartitionsResponse{
ThrottleTime: 100 * time.Millisecond,
TopicPartitionErrors: map[string]*TopicPartitionError{
"topic": &TopicPartitionError{},
},
}
testResponse(t, "success", resp, createPartitionResponseSuccess)
decodedresp := new(CreatePartitionsResponse)
testVersionDecodable(t, "success", decodedresp, createPartitionResponseSuccess, 0)
if !reflect.DeepEqual(decodedresp, resp) {
t.Errorf("Decoding error: expected %v but got %v", decodedresp, resp)
}
errMsg := "error"
resp.TopicPartitionErrors["topic"].Err = ErrInvalidPartitions
resp.TopicPartitionErrors["topic"].ErrMsg = &errMsg
testResponse(t, "with errors", resp, createPartitionResponseFail)
decodedresp = new(CreatePartitionsResponse)
testVersionDecodable(t, "with errors", decodedresp, createPartitionResponseFail, 0)
if !reflect.DeepEqual(decodedresp, resp) {
t.Errorf("Decoding error: expected %v but got %v", decodedresp, resp)
}
}

174
third/github.com/Shopify/sarama/create_topics_request.go Normal file
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package sarama
import (
"time"
)
type CreateTopicsRequest struct {
Version int16
TopicDetails map[string]*TopicDetail
Timeout time.Duration
ValidateOnly bool
}
func (c *CreateTopicsRequest) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(c.TopicDetails)); err != nil {
return err
}
for topic, detail := range c.TopicDetails {
if err := pe.putString(topic); err != nil {
return err
}
if err := detail.encode(pe); err != nil {
return err
}
}
pe.putInt32(int32(c.Timeout / time.Millisecond))
if c.Version >= 1 {
pe.putBool(c.ValidateOnly)
}
return nil
}
func (c *CreateTopicsRequest) decode(pd packetDecoder, version int16) (err error) {
n, err := pd.getArrayLength()
if err != nil {
return err
}
c.TopicDetails = make(map[string]*TopicDetail, n)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
c.TopicDetails[topic] = new(TopicDetail)
if err = c.TopicDetails[topic].decode(pd, version); err != nil {
return err
}
}
timeout, err := pd.getInt32()
if err != nil {
return err
}
c.Timeout = time.Duration(timeout) * time.Millisecond
if version >= 1 {
c.ValidateOnly, err = pd.getBool()
if err != nil {
return err
}
c.Version = version
}
return nil
}
func (c *CreateTopicsRequest) key() int16 {
return 19
}
func (c *CreateTopicsRequest) version() int16 {
return c.Version
}
func (c *CreateTopicsRequest) requiredVersion() KafkaVersion {
switch c.Version {
case 2:
return V1_0_0_0
case 1:
return V0_11_0_0
default:
return V0_10_1_0
}
}
type TopicDetail struct {
NumPartitions int32
ReplicationFactor int16
ReplicaAssignment map[int32][]int32
ConfigEntries map[string]*string
}
func (t *TopicDetail) encode(pe packetEncoder) error {
pe.putInt32(t.NumPartitions)
pe.putInt16(t.ReplicationFactor)
if err := pe.putArrayLength(len(t.ReplicaAssignment)); err != nil {
return err
}
for partition, assignment := range t.ReplicaAssignment {
pe.putInt32(partition)
if err := pe.putInt32Array(assignment); err != nil {
return err
}
}
if err := pe.putArrayLength(len(t.ConfigEntries)); err != nil {
return err
}
for configKey, configValue := range t.ConfigEntries {
if err := pe.putString(configKey); err != nil {
return err
}
if err := pe.putNullableString(configValue); err != nil {
return err
}
}
return nil
}
func (t *TopicDetail) decode(pd packetDecoder, version int16) (err error) {
if t.NumPartitions, err = pd.getInt32(); err != nil {
return err
}
if t.ReplicationFactor, err = pd.getInt16(); err != nil {
return err
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n > 0 {
t.ReplicaAssignment = make(map[int32][]int32, n)
for i := 0; i < n; i++ {
replica, err := pd.getInt32()
if err != nil {
return err
}
if t.ReplicaAssignment[replica], err = pd.getInt32Array(); err != nil {
return err
}
}
}
n, err = pd.getArrayLength()
if err != nil {
return err
}
if n > 0 {
t.ConfigEntries = make(map[string]*string, n)
for i := 0; i < n; i++ {
configKey, err := pd.getString()
if err != nil {
return err
}
if t.ConfigEntries[configKey], err = pd.getNullableString(); err != nil {
return err
}
}
}
return nil
}

50
third/github.com/Shopify/sarama/create_topics_request_test.go Normal file
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package sarama
import (
"testing"
"time"
)
var (
createTopicsRequestV0 = []byte{
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
255, 255, 255, 255,
255, 255,
0, 0, 0, 1, // 1 replica assignment
0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2,
0, 0, 0, 1, // 1 config
0, 12, 'r', 'e', 't', 'e', 'n', 't', 'i', 'o', 'n', '.', 'm', 's',
0, 2, '-', '1',
0, 0, 0, 100,
}
createTopicsRequestV1 = append(createTopicsRequestV0, byte(1))
)
func TestCreateTopicsRequest(t *testing.T) {
retention := "-1"
req := &CreateTopicsRequest{
TopicDetails: map[string]*TopicDetail{
"topic": {
NumPartitions: -1,
ReplicationFactor: -1,
ReplicaAssignment: map[int32][]int32{
0: []int32{0, 1, 2},
},
ConfigEntries: map[string]*string{
"retention.ms": &retention,
},
},
},
Timeout: 100 * time.Millisecond,
}
testRequest(t, "version 0", req, createTopicsRequestV0)
req.Version = 1
req.ValidateOnly = true
testRequest(t, "version 1", req, createTopicsRequestV1)
}

112
third/github.com/Shopify/sarama/create_topics_response.go Normal file
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package sarama
import "time"
type CreateTopicsResponse struct {
Version int16
ThrottleTime time.Duration
TopicErrors map[string]*TopicError
}
func (c *CreateTopicsResponse) encode(pe packetEncoder) error {
if c.Version >= 2 {
pe.putInt32(int32(c.ThrottleTime / time.Millisecond))
}
if err := pe.putArrayLength(len(c.TopicErrors)); err != nil {
return err
}
for topic, topicError := range c.TopicErrors {
if err := pe.putString(topic); err != nil {
return err
}
if err := topicError.encode(pe, c.Version); err != nil {
return err
}
}
return nil
}
func (c *CreateTopicsResponse) decode(pd packetDecoder, version int16) (err error) {
c.Version = version
if version >= 2 {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
c.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
c.TopicErrors = make(map[string]*TopicError, n)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
c.TopicErrors[topic] = new(TopicError)
if err := c.TopicErrors[topic].decode(pd, version); err != nil {
return err
}
}
return nil
}
func (c *CreateTopicsResponse) key() int16 {
return 19
}
func (c *CreateTopicsResponse) version() int16 {
return c.Version
}
func (c *CreateTopicsResponse) requiredVersion() KafkaVersion {
switch c.Version {
case 2:
return V1_0_0_0
case 1:
return V0_11_0_0
default:
return V0_10_1_0
}
}
type TopicError struct {
Err KError
ErrMsg *string
}
func (t *TopicError) encode(pe packetEncoder, version int16) error {
pe.putInt16(int16(t.Err))
if version >= 1 {
if err := pe.putNullableString(t.ErrMsg); err != nil {
return err
}
}
return nil
}
func (t *TopicError) decode(pd packetDecoder, version int16) (err error) {
kErr, err := pd.getInt16()
if err != nil {
return err
}
t.Err = KError(kErr)
if version >= 1 {
if t.ErrMsg, err = pd.getNullableString(); err != nil {
return err
}
}
return nil
}

52
third/github.com/Shopify/sarama/create_topics_response_test.go Normal file
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@ -0,0 +1,52 @@
package sarama
import (
"testing"
"time"
)
var (
createTopicsResponseV0 = []byte{
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 42,
}
createTopicsResponseV1 = []byte{
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 42,
0, 3, 'm', 's', 'g',
}
createTopicsResponseV2 = []byte{
0, 0, 0, 100,
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 42,
0, 3, 'm', 's', 'g',
}
)
func TestCreateTopicsResponse(t *testing.T) {
resp := &CreateTopicsResponse{
TopicErrors: map[string]*TopicError{
"topic": &TopicError{
Err: ErrInvalidRequest,
},
},
}
testResponse(t, "version 0", resp, createTopicsResponseV0)
resp.Version = 1
msg := "msg"
resp.TopicErrors["topic"].ErrMsg = &msg
testResponse(t, "version 1", resp, createTopicsResponseV1)
resp.Version = 2
resp.ThrottleTime = 100 * time.Millisecond
testResponse(t, "version 2", resp, createTopicsResponseV2)
}

30
third/github.com/Shopify/sarama/delete_groups_request.go Normal file
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@ -0,0 +1,30 @@
package sarama
type DeleteGroupsRequest struct {
Groups []string
}
func (r *DeleteGroupsRequest) encode(pe packetEncoder) error {
return pe.putStringArray(r.Groups)
}
func (r *DeleteGroupsRequest) decode(pd packetDecoder, version int16) (err error) {
r.Groups, err = pd.getStringArray()
return
}
func (r *DeleteGroupsRequest) key() int16 {
return 42
}
func (r *DeleteGroupsRequest) version() int16 {
return 0
}
func (r *DeleteGroupsRequest) requiredVersion() KafkaVersion {
return V1_1_0_0
}
func (r *DeleteGroupsRequest) AddGroup(group string) {
r.Groups = append(r.Groups, group)
}

34
third/github.com/Shopify/sarama/delete_groups_request_test.go Normal file
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@ -0,0 +1,34 @@
package sarama
import "testing"
var (
emptyDeleteGroupsRequest = []byte{0, 0, 0, 0}
singleDeleteGroupsRequest = []byte{
0, 0, 0, 1, // 1 group
0, 3, 'f', 'o', 'o', // group name: foo
}
doubleDeleteGroupsRequest = []byte{
0, 0, 0, 2, // 2 groups
0, 3, 'f', 'o', 'o', // group name: foo
0, 3, 'b', 'a', 'r', // group name: foo
}
)
func TestDeleteGroupsRequest(t *testing.T) {
var request *DeleteGroupsRequest
request = new(DeleteGroupsRequest)
testRequest(t, "no groups", request, emptyDeleteGroupsRequest)
request = new(DeleteGroupsRequest)
request.AddGroup("foo")
testRequest(t, "one group", request, singleDeleteGroupsRequest)
request = new(DeleteGroupsRequest)
request.AddGroup("foo")
request.AddGroup("bar")
testRequest(t, "two groups", request, doubleDeleteGroupsRequest)
}

70
third/github.com/Shopify/sarama/delete_groups_response.go Normal file
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package sarama
import (
"time"
)
type DeleteGroupsResponse struct {
ThrottleTime time.Duration
GroupErrorCodes map[string]KError
}
func (r *DeleteGroupsResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(r.ThrottleTime / time.Millisecond))
if err := pe.putArrayLength(len(r.GroupErrorCodes)); err != nil {
return err
}
for groupID, errorCode := range r.GroupErrorCodes {
if err := pe.putString(groupID); err != nil {
return err
}
pe.putInt16(int16(errorCode))
}
return nil
}
func (r *DeleteGroupsResponse) decode(pd packetDecoder, version int16) error {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
r.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n == 0 {
return nil
}
r.GroupErrorCodes = make(map[string]KError, n)
for i := 0; i < n; i++ {
groupID, err := pd.getString()
if err != nil {
return err
}
errorCode, err := pd.getInt16()
if err != nil {
return err
}
r.GroupErrorCodes[groupID] = KError(errorCode)
}
return nil
}
func (r *DeleteGroupsResponse) key() int16 {
return 42
}
func (r *DeleteGroupsResponse) version() int16 {
return 0
}
func (r *DeleteGroupsResponse) requiredVersion() KafkaVersion {
return V1_1_0_0
}

57
third/github.com/Shopify/sarama/delete_groups_response_test.go Normal file
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@ -0,0 +1,57 @@
package sarama
import (
"testing"
)
var (
emptyDeleteGroupsResponse = []byte{
0, 0, 0, 0, // does not violate any quota
0, 0, 0, 0, // no groups
}
errorDeleteGroupsResponse = []byte{
0, 0, 0, 0, // does not violate any quota
0, 0, 0, 1, // 1 group
0, 3, 'f', 'o', 'o', // group name
0, 31, // error ErrClusterAuthorizationFailed
}
noErrorDeleteGroupsResponse = []byte{
0, 0, 0, 0, // does not violate any quota
0, 0, 0, 1, // 1 group
0, 3, 'f', 'o', 'o', // group name
0, 0, // no error
}
)
func TestDeleteGroupsResponse(t *testing.T) {
var response *DeleteGroupsResponse
response = new(DeleteGroupsResponse)
testVersionDecodable(t, "empty", response, emptyDeleteGroupsResponse, 0)
if response.ThrottleTime != 0 {
t.Error("Expected no violation")
}
if len(response.GroupErrorCodes) != 0 {
t.Error("Expected no groups")
}
response = new(DeleteGroupsResponse)
testVersionDecodable(t, "error", response, errorDeleteGroupsResponse, 0)
if response.ThrottleTime != 0 {
t.Error("Expected no violation")
}
if response.GroupErrorCodes["foo"] != ErrClusterAuthorizationFailed {
t.Error("Expected error ErrClusterAuthorizationFailed, found:", response.GroupErrorCodes["foo"])
}
response = new(DeleteGroupsResponse)
testVersionDecodable(t, "no error", response, noErrorDeleteGroupsResponse, 0)
if response.ThrottleTime != 0 {
t.Error("Expected no violation")
}
if response.GroupErrorCodes["foo"] != ErrNoError {
t.Error("Expected error ErrClusterAuthorizationFailed, found:", response.GroupErrorCodes["foo"])
}
}

126
third/github.com/Shopify/sarama/delete_records_request.go Normal file
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package sarama
import (
"sort"
"time"
)
// request message format is:
// [topic] timeout(int32)
// where topic is:
// name(string) [partition]
// where partition is:
// id(int32) offset(int64)
type DeleteRecordsRequest struct {
Topics map[string]*DeleteRecordsRequestTopic
Timeout time.Duration
}
func (d *DeleteRecordsRequest) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(d.Topics)); err != nil {
return err
}
keys := make([]string, 0, len(d.Topics))
for topic := range d.Topics {
keys = append(keys, topic)
}
sort.Strings(keys)
for _, topic := range keys {
if err := pe.putString(topic); err != nil {
return err
}
if err := d.Topics[topic].encode(pe); err != nil {
return err
}
}
pe.putInt32(int32(d.Timeout / time.Millisecond))
return nil
}
func (d *DeleteRecordsRequest) decode(pd packetDecoder, version int16) error {
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n > 0 {
d.Topics = make(map[string]*DeleteRecordsRequestTopic, n)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
details := new(DeleteRecordsRequestTopic)
if err = details.decode(pd, version); err != nil {
return err
}
d.Topics[topic] = details
}
}
timeout, err := pd.getInt32()
if err != nil {
return err
}
d.Timeout = time.Duration(timeout) * time.Millisecond
return nil
}
func (d *DeleteRecordsRequest) key() int16 {
return 21
}
func (d *DeleteRecordsRequest) version() int16 {
return 0
}
func (d *DeleteRecordsRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}
type DeleteRecordsRequestTopic struct {
PartitionOffsets map[int32]int64 // partition => offset
}
func (t *DeleteRecordsRequestTopic) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(t.PartitionOffsets)); err != nil {
return err
}
keys := make([]int32, 0, len(t.PartitionOffsets))
for partition := range t.PartitionOffsets {
keys = append(keys, partition)
}
sort.Slice(keys, func(i, j int) bool { return keys[i] < keys[j] })
for _, partition := range keys {
pe.putInt32(partition)
pe.putInt64(t.PartitionOffsets[partition])
}
return nil
}
func (t *DeleteRecordsRequestTopic) decode(pd packetDecoder, version int16) error {
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n > 0 {
t.PartitionOffsets = make(map[int32]int64, n)
for i := 0; i < n; i++ {
partition, err := pd.getInt32()
if err != nil {
return err
}
offset, err := pd.getInt64()
if err != nil {
return err
}
t.PartitionOffsets[partition] = offset
}
}
return nil
}

36
third/github.com/Shopify/sarama/delete_records_request_test.go Normal file
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@ -0,0 +1,36 @@
package sarama
import (
"testing"
"time"
)
var deleteRecordsRequest = []byte{
0, 0, 0, 2,
0, 5, 'o', 't', 'h', 'e', 'r',
0, 0, 0, 0,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0, 0, 2,
0, 0, 0, 19,
0, 0, 0, 0, 0, 0, 0, 200,
0, 0, 0, 20,
0, 0, 0, 0, 0, 0, 0, 190,
0, 0, 0, 100,
}
func TestDeleteRecordsRequest(t *testing.T) {
req := &DeleteRecordsRequest{
Topics: map[string]*DeleteRecordsRequestTopic{
"topic": {
PartitionOffsets: map[int32]int64{
19: 200,
20: 190,
},
},
"other": {},
},
Timeout: 100 * time.Millisecond,
}
testRequest(t, "", req, deleteRecordsRequest)
}

158
third/github.com/Shopify/sarama/delete_records_response.go Normal file
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@ -0,0 +1,158 @@
package sarama
import (
"sort"
"time"
)
// response message format is:
// throttleMs(int32) [topic]
// where topic is:
// name(string) [partition]
// where partition is:
// id(int32) low_watermark(int64) error_code(int16)
type DeleteRecordsResponse struct {
Version int16
ThrottleTime time.Duration
Topics map[string]*DeleteRecordsResponseTopic
}
func (d *DeleteRecordsResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(d.ThrottleTime / time.Millisecond))
if err := pe.putArrayLength(len(d.Topics)); err != nil {
return err
}
keys := make([]string, 0, len(d.Topics))
for topic := range d.Topics {
keys = append(keys, topic)
}
sort.Strings(keys)
for _, topic := range keys {
if err := pe.putString(topic); err != nil {
return err
}
if err := d.Topics[topic].encode(pe); err != nil {
return err
}
}
return nil
}
func (d *DeleteRecordsResponse) decode(pd packetDecoder, version int16) error {
d.Version = version
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
d.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n > 0 {
d.Topics = make(map[string]*DeleteRecordsResponseTopic, n)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
details := new(DeleteRecordsResponseTopic)
if err = details.decode(pd, version); err != nil {
return err
}
d.Topics[topic] = details
}
}
return nil
}
func (d *DeleteRecordsResponse) key() int16 {
return 21
}
func (d *DeleteRecordsResponse) version() int16 {
return 0
}
func (d *DeleteRecordsResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}
type DeleteRecordsResponseTopic struct {
Partitions map[int32]*DeleteRecordsResponsePartition
}
func (t *DeleteRecordsResponseTopic) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(t.Partitions)); err != nil {
return err
}
keys := make([]int32, 0, len(t.Partitions))
for partition := range t.Partitions {
keys = append(keys, partition)
}
sort.Slice(keys, func(i, j int) bool { return keys[i] < keys[j] })
for _, partition := range keys {
pe.putInt32(partition)
if err := t.Partitions[partition].encode(pe); err != nil {
return err
}
}
return nil
}
func (t *DeleteRecordsResponseTopic) decode(pd packetDecoder, version int16) error {
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n > 0 {
t.Partitions = make(map[int32]*DeleteRecordsResponsePartition, n)
for i := 0; i < n; i++ {
partition, err := pd.getInt32()
if err != nil {
return err
}
details := new(DeleteRecordsResponsePartition)
if err = details.decode(pd, version); err != nil {
return err
}
t.Partitions[partition] = details
}
}
return nil
}
type DeleteRecordsResponsePartition struct {
LowWatermark int64
Err KError
}
func (t *DeleteRecordsResponsePartition) encode(pe packetEncoder) error {
pe.putInt64(t.LowWatermark)
pe.putInt16(int16(t.Err))
return nil
}
func (t *DeleteRecordsResponsePartition) decode(pd packetDecoder, version int16) error {
lowWatermark, err := pd.getInt64()
if err != nil {
return err
}
t.LowWatermark = lowWatermark
kErr, err := pd.getInt16()
if err != nil {
return err
}
t.Err = KError(kErr)
return nil
}

39
third/github.com/Shopify/sarama/delete_records_response_test.go Normal file
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package sarama
import (
"testing"
"time"
)
var deleteRecordsResponse = []byte{
0, 0, 0, 100,
0, 0, 0, 2,
0, 5, 'o', 't', 'h', 'e', 'r',
0, 0, 0, 0,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0, 0, 2,
0, 0, 0, 19,
0, 0, 0, 0, 0, 0, 0, 200,
0, 0,
0, 0, 0, 20,
255, 255, 255, 255, 255, 255, 255, 255,
0, 3,
}
func TestDeleteRecordsResponse(t *testing.T) {
resp := &DeleteRecordsResponse{
Version: 0,
ThrottleTime: 100 * time.Millisecond,
Topics: map[string]*DeleteRecordsResponseTopic{
"topic": {
Partitions: map[int32]*DeleteRecordsResponsePartition{
19: {LowWatermark: 200, Err: 0},
20: {LowWatermark: -1, Err: 3},
},
},
"other": {},
},
}
testResponse(t, "", resp, deleteRecordsResponse)
}

48
third/github.com/Shopify/sarama/delete_topics_request.go Normal file
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package sarama
import "time"
type DeleteTopicsRequest struct {
Version int16
Topics []string
Timeout time.Duration
}
func (d *DeleteTopicsRequest) encode(pe packetEncoder) error {
if err := pe.putStringArray(d.Topics); err != nil {
return err
}
pe.putInt32(int32(d.Timeout / time.Millisecond))
return nil
}
func (d *DeleteTopicsRequest) decode(pd packetDecoder, version int16) (err error) {
if d.Topics, err = pd.getStringArray(); err != nil {
return err
}
timeout, err := pd.getInt32()
if err != nil {
return err
}
d.Timeout = time.Duration(timeout) * time.Millisecond
d.Version = version
return nil
}
func (d *DeleteTopicsRequest) key() int16 {
return 20
}
func (d *DeleteTopicsRequest) version() int16 {
return d.Version
}
func (d *DeleteTopicsRequest) requiredVersion() KafkaVersion {
switch d.Version {
case 1:
return V0_11_0_0
default:
return V0_10_1_0
}
}

33
third/github.com/Shopify/sarama/delete_topics_request_test.go Normal file
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package sarama
import (
"testing"
"time"
)
var deleteTopicsRequest = []byte{
0, 0, 0, 2,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 5, 'o', 't', 'h', 'e', 'r',
0, 0, 0, 100,
}
func TestDeleteTopicsRequestV0(t *testing.T) {
req := &DeleteTopicsRequest{
Version: 0,
Topics: []string{"topic", "other"},
Timeout: 100 * time.Millisecond,
}
testRequest(t, "", req, deleteTopicsRequest)
}
func TestDeleteTopicsRequestV1(t *testing.T) {
req := &DeleteTopicsRequest{
Version: 1,
Topics: []string{"topic", "other"},
Timeout: 100 * time.Millisecond,
}
testRequest(t, "", req, deleteTopicsRequest)
}

78
third/github.com/Shopify/sarama/delete_topics_response.go Normal file
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package sarama
import "time"
type DeleteTopicsResponse struct {
Version int16
ThrottleTime time.Duration
TopicErrorCodes map[string]KError
}
func (d *DeleteTopicsResponse) encode(pe packetEncoder) error {
if d.Version >= 1 {
pe.putInt32(int32(d.ThrottleTime / time.Millisecond))
}
if err := pe.putArrayLength(len(d.TopicErrorCodes)); err != nil {
return err
}
for topic, errorCode := range d.TopicErrorCodes {
if err := pe.putString(topic); err != nil {
return err
}
pe.putInt16(int16(errorCode))
}
return nil
}
func (d *DeleteTopicsResponse) decode(pd packetDecoder, version int16) (err error) {
if version >= 1 {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
d.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
d.Version = version
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
d.TopicErrorCodes = make(map[string]KError, n)
for i := 0; i < n; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
errorCode, err := pd.getInt16()
if err != nil {
return err
}
d.TopicErrorCodes[topic] = KError(errorCode)
}
return nil
}
func (d *DeleteTopicsResponse) key() int16 {
return 20
}
func (d *DeleteTopicsResponse) version() int16 {
return d.Version
}
func (d *DeleteTopicsResponse) requiredVersion() KafkaVersion {
switch d.Version {
case 1:
return V0_11_0_0
default:
return V0_10_1_0
}
}

36
third/github.com/Shopify/sarama/delete_topics_response_test.go Normal file
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package sarama
import (
"testing"
"time"
)
var (
deleteTopicsResponseV0 = []byte{
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0,
}
deleteTopicsResponseV1 = []byte{
0, 0, 0, 100,
0, 0, 0, 1,
0, 5, 't', 'o', 'p', 'i', 'c',
0, 0,
}
)
func TestDeleteTopicsResponse(t *testing.T) {
resp := &DeleteTopicsResponse{
TopicErrorCodes: map[string]KError{
"topic": ErrNoError,
},
}
testResponse(t, "version 0", resp, deleteTopicsResponseV0)
resp.Version = 1
resp.ThrottleTime = 100 * time.Millisecond
testResponse(t, "version 1", resp, deleteTopicsResponseV1)
}

91
third/github.com/Shopify/sarama/describe_configs_request.go Normal file
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package sarama
type ConfigResource struct {
Type ConfigResourceType
Name string
ConfigNames []string
}
type DescribeConfigsRequest struct {
Resources []*ConfigResource
}
func (r *DescribeConfigsRequest) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(r.Resources)); err != nil {
return err
}
for _, c := range r.Resources {
pe.putInt8(int8(c.Type))
if err := pe.putString(c.Name); err != nil {
return err
}
if len(c.ConfigNames) == 0 {
pe.putInt32(-1)
continue
}
if err := pe.putStringArray(c.ConfigNames); err != nil {
return err
}
}
return nil
}
func (r *DescribeConfigsRequest) decode(pd packetDecoder, version int16) (err error) {
n, err := pd.getArrayLength()
if err != nil {
return err
}
r.Resources = make([]*ConfigResource, n)
for i := 0; i < n; i++ {
r.Resources[i] = &ConfigResource{}
t, err := pd.getInt8()
if err != nil {
return err
}
r.Resources[i].Type = ConfigResourceType(t)
name, err := pd.getString()
if err != nil {
return err
}
r.Resources[i].Name = name
confLength, err := pd.getArrayLength()
if err != nil {
return err
}
if confLength == -1 {
continue
}
cfnames := make([]string, confLength)
for i := 0; i < confLength; i++ {
s, err := pd.getString()
if err != nil {
return err
}
cfnames[i] = s
}
r.Resources[i].ConfigNames = cfnames
}
return nil
}
func (r *DescribeConfigsRequest) key() int16 {
return 32
}
func (r *DescribeConfigsRequest) version() int16 {
return 0
}
func (r *DescribeConfigsRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}

90
third/github.com/Shopify/sarama/describe_configs_request_test.go Normal file
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package sarama
import "testing"
var (
emptyDescribeConfigsRequest = []byte{
0, 0, 0, 0, // 0 configs
}
singleDescribeConfigsRequest = []byte{
0, 0, 0, 1, // 1 config
2, // a topic
0, 3, 'f', 'o', 'o', // topic name: foo
0, 0, 0, 1, //1 config name
0, 10, // 10 chars
's', 'e', 'g', 'm', 'e', 'n', 't', '.', 'm', 's',
}
doubleDescribeConfigsRequest = []byte{
0, 0, 0, 2, // 2 configs
2, // a topic
0, 3, 'f', 'o', 'o', // topic name: foo
0, 0, 0, 2, //2 config name
0, 10, // 10 chars
's', 'e', 'g', 'm', 'e', 'n', 't', '.', 'm', 's',
0, 12, // 12 chars
'r', 'e', 't', 'e', 'n', 't', 'i', 'o', 'n', '.', 'm', 's',
2, // a topic
0, 3, 'b', 'a', 'r', // topic name: foo
0, 0, 0, 1, // 1 config
0, 10, // 10 chars
's', 'e', 'g', 'm', 'e', 'n', 't', '.', 'm', 's',
}
singleDescribeConfigsRequestAllConfigs = []byte{
0, 0, 0, 1, // 1 config
2, // a topic
0, 3, 'f', 'o', 'o', // topic name: foo
255, 255, 255, 255, // no configs
}
)
func TestDescribeConfigsRequest(t *testing.T) {
var request *DescribeConfigsRequest
request = &DescribeConfigsRequest{
Resources: []*ConfigResource{},
}
testRequest(t, "no requests", request, emptyDescribeConfigsRequest)
configs := []string{"segment.ms"}
request = &DescribeConfigsRequest{
Resources: []*ConfigResource{
&ConfigResource{
Type: TopicResource,
Name: "foo",
ConfigNames: configs,
},
},
}
testRequest(t, "one config", request, singleDescribeConfigsRequest)
request = &DescribeConfigsRequest{
Resources: []*ConfigResource{
&ConfigResource{
Type: TopicResource,
Name: "foo",
ConfigNames: []string{"segment.ms", "retention.ms"},
},
&ConfigResource{
Type: TopicResource,
Name: "bar",
ConfigNames: []string{"segment.ms"},
},
},
}
testRequest(t, "two configs", request, doubleDescribeConfigsRequest)
request = &DescribeConfigsRequest{
Resources: []*ConfigResource{
&ConfigResource{
Type: TopicResource,
Name: "foo",
},
},
}
testRequest(t, "one topic, all configs", request, singleDescribeConfigsRequestAllConfigs)
}

188
third/github.com/Shopify/sarama/describe_configs_response.go Normal file
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package sarama
import "time"
type DescribeConfigsResponse struct {
ThrottleTime time.Duration
Resources []*ResourceResponse
}
type ResourceResponse struct {
ErrorCode int16
ErrorMsg string
Type ConfigResourceType
Name string
Configs []*ConfigEntry
}
type ConfigEntry struct {
Name string
Value string
ReadOnly bool
Default bool
Sensitive bool
}
func (r *DescribeConfigsResponse) encode(pe packetEncoder) (err error) {
pe.putInt32(int32(r.ThrottleTime / time.Millisecond))
if err = pe.putArrayLength(len(r.Resources)); err != nil {
return err
}
for _, c := range r.Resources {
if err = c.encode(pe); err != nil {
return err
}
}
return nil
}
func (r *DescribeConfigsResponse) decode(pd packetDecoder, version int16) (err error) {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
r.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
n, err := pd.getArrayLength()
if err != nil {
return err
}
r.Resources = make([]*ResourceResponse, n)
for i := 0; i < n; i++ {
rr := &ResourceResponse{}
if err := rr.decode(pd, version); err != nil {
return err
}
r.Resources[i] = rr
}
return nil
}
func (r *DescribeConfigsResponse) key() int16 {
return 32
}
func (r *DescribeConfigsResponse) version() int16 {
return 0
}
func (r *DescribeConfigsResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}
func (r *ResourceResponse) encode(pe packetEncoder) (err error) {
pe.putInt16(r.ErrorCode)
if err = pe.putString(r.ErrorMsg); err != nil {
return err
}
pe.putInt8(int8(r.Type))
if err = pe.putString(r.Name); err != nil {
return err
}
if err = pe.putArrayLength(len(r.Configs)); err != nil {
return err
}
for _, c := range r.Configs {
if err = c.encode(pe); err != nil {
return err
}
}
return nil
}
func (r *ResourceResponse) decode(pd packetDecoder, version int16) (err error) {
ec, err := pd.getInt16()
if err != nil {
return err
}
r.ErrorCode = ec
em, err := pd.getString()
if err != nil {
return err
}
r.ErrorMsg = em
t, err := pd.getInt8()
if err != nil {
return err
}
r.Type = ConfigResourceType(t)
name, err := pd.getString()
if err != nil {
return err
}
r.Name = name
n, err := pd.getArrayLength()
if err != nil {
return err
}
r.Configs = make([]*ConfigEntry, n)
for i := 0; i < n; i++ {
c := &ConfigEntry{}
if err := c.decode(pd, version); err != nil {
return err
}
r.Configs[i] = c
}
return nil
}
func (r *ConfigEntry) encode(pe packetEncoder) (err error) {
if err = pe.putString(r.Name); err != nil {
return err
}
if err = pe.putString(r.Value); err != nil {
return err
}
pe.putBool(r.ReadOnly)
pe.putBool(r.Default)
pe.putBool(r.Sensitive)
return nil
}
func (r *ConfigEntry) decode(pd packetDecoder, version int16) (err error) {
name, err := pd.getString()
if err != nil {
return err
}
r.Name = name
value, err := pd.getString()
if err != nil {
return err
}
r.Value = value
read, err := pd.getBool()
if err != nil {
return err
}
r.ReadOnly = read
de, err := pd.getBool()
if err != nil {
return err
}
r.Default = de
sensitive, err := pd.getBool()
if err != nil {
return err
}
r.Sensitive = sensitive
return nil
}

60
third/github.com/Shopify/sarama/describe_configs_response_test.go Normal file
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package sarama
import (
"testing"
)
var (
describeConfigsResponseEmpty = []byte{
0, 0, 0, 0, //throttle
0, 0, 0, 0, // no configs
}
describeConfigsResponsePopulated = []byte{
0, 0, 0, 0, //throttle
0, 0, 0, 1, // response
0, 0, //errorcode
0, 0, //string
2, // topic
0, 3, 'f', 'o', 'o',
0, 0, 0, 1, //configs
0, 10, 's', 'e', 'g', 'm', 'e', 'n', 't', '.', 'm', 's',
0, 4, '1', '0', '0', '0',
0, // ReadOnly
0, // Default
0, // Sensitive
}
)
func TestDescribeConfigsResponse(t *testing.T) {
var response *DescribeConfigsResponse
response = &DescribeConfigsResponse{
Resources: []*ResourceResponse{},
}
testVersionDecodable(t, "empty", response, describeConfigsResponseEmpty, 0)
if len(response.Resources) != 0 {
t.Error("Expected no groups")
}
response = &DescribeConfigsResponse{
Resources: []*ResourceResponse{
&ResourceResponse{
ErrorCode: 0,
ErrorMsg: "",
Type: TopicResource,
Name: "foo",
Configs: []*ConfigEntry{
&ConfigEntry{
Name: "segment.ms",
Value: "1000",
ReadOnly: false,
Default: false,
Sensitive: false,
},
},
},
},
}
testResponse(t, "response with error", response, describeConfigsResponsePopulated)
}

30
third/github.com/Shopify/sarama/describe_groups_request.go Normal file
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package sarama
type DescribeGroupsRequest struct {
Groups []string
}
func (r *DescribeGroupsRequest) encode(pe packetEncoder) error {
return pe.putStringArray(r.Groups)
}
func (r *DescribeGroupsRequest) decode(pd packetDecoder, version int16) (err error) {
r.Groups, err = pd.getStringArray()
return
}
func (r *DescribeGroupsRequest) key() int16 {
return 15
}
func (r *DescribeGroupsRequest) version() int16 {
return 0
}
func (r *DescribeGroupsRequest) requiredVersion() KafkaVersion {
return V0_9_0_0
}
func (r *DescribeGroupsRequest) AddGroup(group string) {
r.Groups = append(r.Groups, group)
}

34
third/github.com/Shopify/sarama/describe_groups_request_test.go Normal file
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package sarama
import "testing"
var (
emptyDescribeGroupsRequest = []byte{0, 0, 0, 0}
singleDescribeGroupsRequest = []byte{
0, 0, 0, 1, // 1 group
0, 3, 'f', 'o', 'o', // group name: foo
}
doubleDescribeGroupsRequest = []byte{
0, 0, 0, 2, // 2 groups
0, 3, 'f', 'o', 'o', // group name: foo
0, 3, 'b', 'a', 'r', // group name: foo
}
)
func TestDescribeGroupsRequest(t *testing.T) {
var request *DescribeGroupsRequest
request = new(DescribeGroupsRequest)
testRequest(t, "no groups", request, emptyDescribeGroupsRequest)
request = new(DescribeGroupsRequest)
request.AddGroup("foo")
testRequest(t, "one group", request, singleDescribeGroupsRequest)
request = new(DescribeGroupsRequest)
request.AddGroup("foo")
request.AddGroup("bar")
testRequest(t, "two groups", request, doubleDescribeGroupsRequest)
}

187
third/github.com/Shopify/sarama/describe_groups_response.go Normal file
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package sarama
type DescribeGroupsResponse struct {
Groups []*GroupDescription
}
func (r *DescribeGroupsResponse) encode(pe packetEncoder) error {
if err := pe.putArrayLength(len(r.Groups)); err != nil {
return err
}
for _, groupDescription := range r.Groups {
if err := groupDescription.encode(pe); err != nil {
return err
}
}
return nil
}
func (r *DescribeGroupsResponse) decode(pd packetDecoder, version int16) (err error) {
n, err := pd.getArrayLength()
if err != nil {
return err
}
r.Groups = make([]*GroupDescription, n)
for i := 0; i < n; i++ {
r.Groups[i] = new(GroupDescription)
if err := r.Groups[i].decode(pd); err != nil {
return err
}
}
return nil
}
func (r *DescribeGroupsResponse) key() int16 {
return 15
}
func (r *DescribeGroupsResponse) version() int16 {
return 0
}
func (r *DescribeGroupsResponse) requiredVersion() KafkaVersion {
return V0_9_0_0
}
type GroupDescription struct {
Err KError
GroupId string
State string
ProtocolType string
Protocol string
Members map[string]*GroupMemberDescription
}
func (gd *GroupDescription) encode(pe packetEncoder) error {
pe.putInt16(int16(gd.Err))
if err := pe.putString(gd.GroupId); err != nil {
return err
}
if err := pe.putString(gd.State); err != nil {
return err
}
if err := pe.putString(gd.ProtocolType); err != nil {
return err
}
if err := pe.putString(gd.Protocol); err != nil {
return err
}
if err := pe.putArrayLength(len(gd.Members)); err != nil {
return err
}
for memberId, groupMemberDescription := range gd.Members {
if err := pe.putString(memberId); err != nil {
return err
}
if err := groupMemberDescription.encode(pe); err != nil {
return err
}
}
return nil
}
func (gd *GroupDescription) decode(pd packetDecoder) (err error) {
kerr, err := pd.getInt16()
if err != nil {
return err
}
gd.Err = KError(kerr)
if gd.GroupId, err = pd.getString(); err != nil {
return
}
if gd.State, err = pd.getString(); err != nil {
return
}
if gd.ProtocolType, err = pd.getString(); err != nil {
return
}
if gd.Protocol, err = pd.getString(); err != nil {
return
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n == 0 {
return nil
}
gd.Members = make(map[string]*GroupMemberDescription)
for i := 0; i < n; i++ {
memberId, err := pd.getString()
if err != nil {
return err
}
gd.Members[memberId] = new(GroupMemberDescription)
if err := gd.Members[memberId].decode(pd); err != nil {
return err
}
}
return nil
}
type GroupMemberDescription struct {
ClientId string
ClientHost string
MemberMetadata []byte
MemberAssignment []byte
}
func (gmd *GroupMemberDescription) encode(pe packetEncoder) error {
if err := pe.putString(gmd.ClientId); err != nil {
return err
}
if err := pe.putString(gmd.ClientHost); err != nil {
return err
}
if err := pe.putBytes(gmd.MemberMetadata); err != nil {
return err
}
if err := pe.putBytes(gmd.MemberAssignment); err != nil {
return err
}
return nil
}
func (gmd *GroupMemberDescription) decode(pd packetDecoder) (err error) {
if gmd.ClientId, err = pd.getString(); err != nil {
return
}
if gmd.ClientHost, err = pd.getString(); err != nil {
return
}
if gmd.MemberMetadata, err = pd.getBytes(); err != nil {
return
}
if gmd.MemberAssignment, err = pd.getBytes(); err != nil {
return
}
return nil
}
func (gmd *GroupMemberDescription) GetMemberAssignment() (*ConsumerGroupMemberAssignment, error) {
assignment := new(ConsumerGroupMemberAssignment)
err := decode(gmd.MemberAssignment, assignment)
return assignment, err
}
func (gmd *GroupMemberDescription) GetMemberMetadata() (*ConsumerGroupMemberMetadata, error) {
metadata := new(ConsumerGroupMemberMetadata)
err := decode(gmd.MemberMetadata, metadata)
return metadata, err
}

91
third/github.com/Shopify/sarama/describe_groups_response_test.go Normal file
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package sarama
import (
"reflect"
"testing"
)
var (
describeGroupsResponseEmpty = []byte{
0, 0, 0, 0, // no groups
}
describeGroupsResponsePopulated = []byte{
0, 0, 0, 2, // 2 groups
0, 0, // no error
0, 3, 'f', 'o', 'o', // Group ID
0, 3, 'b', 'a', 'r', // State
0, 8, 'c', 'o', 'n', 's', 'u', 'm', 'e', 'r', // ConsumerProtocol type
0, 3, 'b', 'a', 'z', // Protocol name
0, 0, 0, 1, // 1 member
0, 2, 'i', 'd', // Member ID
0, 6, 's', 'a', 'r', 'a', 'm', 'a', // Client ID
0, 9, 'l', 'o', 'c', 'a', 'l', 'h', 'o', 's', 't', // Client Host
0, 0, 0, 3, 0x01, 0x02, 0x03, // MemberMetadata
0, 0, 0, 3, 0x04, 0x05, 0x06, // MemberAssignment
0, 30, // ErrGroupAuthorizationFailed
0, 0,
0, 0,
0, 0,
0, 0,
0, 0, 0, 0,
}
)
func TestDescribeGroupsResponse(t *testing.T) {
var response *DescribeGroupsResponse
response = new(DescribeGroupsResponse)
testVersionDecodable(t, "empty", response, describeGroupsResponseEmpty, 0)
if len(response.Groups) != 0 {
t.Error("Expected no groups")
}
response = new(DescribeGroupsResponse)
testVersionDecodable(t, "populated", response, describeGroupsResponsePopulated, 0)
if len(response.Groups) != 2 {
t.Error("Expected two groups")
}
group0 := response.Groups[0]
if group0.Err != ErrNoError {
t.Error("Unxpected groups[0].Err, found", group0.Err)
}
if group0.GroupId != "foo" {
t.Error("Unxpected groups[0].GroupId, found", group0.GroupId)
}
if group0.State != "bar" {
t.Error("Unxpected groups[0].State, found", group0.State)
}
if group0.ProtocolType != "consumer" {
t.Error("Unxpected groups[0].ProtocolType, found", group0.ProtocolType)
}
if group0.Protocol != "baz" {
t.Error("Unxpected groups[0].Protocol, found", group0.Protocol)
}
if len(group0.Members) != 1 {
t.Error("Unxpected groups[0].Members, found", group0.Members)
}
if group0.Members["id"].ClientId != "sarama" {
t.Error("Unxpected groups[0].Members[id].ClientId, found", group0.Members["id"].ClientId)
}
if group0.Members["id"].ClientHost != "localhost" {
t.Error("Unxpected groups[0].Members[id].ClientHost, found", group0.Members["id"].ClientHost)
}
if !reflect.DeepEqual(group0.Members["id"].MemberMetadata, []byte{0x01, 0x02, 0x03}) {
t.Error("Unxpected groups[0].Members[id].MemberMetadata, found", group0.Members["id"].MemberMetadata)
}
if !reflect.DeepEqual(group0.Members["id"].MemberAssignment, []byte{0x04, 0x05, 0x06}) {
t.Error("Unxpected groups[0].Members[id].MemberAssignment, found", group0.Members["id"].MemberAssignment)
}
group1 := response.Groups[1]
if group1.Err != ErrGroupAuthorizationFailed {
t.Error("Unxpected groups[1].Err, found", group0.Err)
}
if len(group1.Members) != 0 {
t.Error("Unxpected groups[1].Members, found", group0.Members)
}
}

10
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name: sarama
up:
- go:
version: '1.9'
commands:
test:
run: make test
desc: 'run unit tests'

89
third/github.com/Shopify/sarama/encoder_decoder.go Normal file
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package sarama
import (
"fmt"
"gitee.com/johng/gf/third/github.com/rcrowley/go-metrics"
)
// Encoder is the interface that wraps the basic Encode method.
// Anything implementing Encoder can be turned into bytes using Kafka's encoding rules.
type encoder interface {
encode(pe packetEncoder) error
}
// Encode takes an Encoder and turns it into bytes while potentially recording metrics.
func encode(e encoder, metricRegistry metrics.Registry) ([]byte, error) {
if e == nil {
return nil, nil
}
var prepEnc prepEncoder
var realEnc realEncoder
err := e.encode(&prepEnc)
if err != nil {
return nil, err
}
if prepEnc.length < 0 || prepEnc.length > int(MaxRequestSize) {
return nil, PacketEncodingError{fmt.Sprintf("invalid request size (%d)", prepEnc.length)}
}
realEnc.raw = make([]byte, prepEnc.length)
realEnc.registry = metricRegistry
err = e.encode(&realEnc)
if err != nil {
return nil, err
}
return realEnc.raw, nil
}
// Decoder is the interface that wraps the basic Decode method.
// Anything implementing Decoder can be extracted from bytes using Kafka's encoding rules.
type decoder interface {
decode(pd packetDecoder) error
}
type versionedDecoder interface {
decode(pd packetDecoder, version int16) error
}
// Decode takes bytes and a Decoder and fills the fields of the decoder from the bytes,
// interpreted using Kafka's encoding rules.
func decode(buf []byte, in decoder) error {
if buf == nil {
return nil
}
helper := realDecoder{raw: buf}
err := in.decode(&helper)
if err != nil {
return err
}
if helper.off != len(buf) {
return PacketDecodingError{"invalid length"}
}
return nil
}
func versionedDecode(buf []byte, in versionedDecoder, version int16) error {
if buf == nil {
return nil
}
helper := realDecoder{raw: buf}
err := in.decode(&helper, version)
if err != nil {
return err
}
if helper.off != len(buf) {
return PacketDecodingError{"invalid length"}
}
return nil
}

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third/github.com/Shopify/sarama/end_txn_request.go Normal file
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package sarama
type EndTxnRequest struct {
TransactionalID string
ProducerID int64
ProducerEpoch int16
TransactionResult bool
}
func (a *EndTxnRequest) encode(pe packetEncoder) error {
if err := pe.putString(a.TransactionalID); err != nil {
return err
}
pe.putInt64(a.ProducerID)
pe.putInt16(a.ProducerEpoch)
pe.putBool(a.TransactionResult)
return nil
}
func (a *EndTxnRequest) decode(pd packetDecoder, version int16) (err error) {
if a.TransactionalID, err = pd.getString(); err != nil {
return err
}
if a.ProducerID, err = pd.getInt64(); err != nil {
return err
}
if a.ProducerEpoch, err = pd.getInt16(); err != nil {
return err
}
if a.TransactionResult, err = pd.getBool(); err != nil {
return err
}
return nil
}
func (a *EndTxnRequest) key() int16 {
return 26
}
func (a *EndTxnRequest) version() int16 {
return 0
}
func (a *EndTxnRequest) requiredVersion() KafkaVersion {
return V0_11_0_0
}

23
third/github.com/Shopify/sarama/end_txn_request_test.go Normal file
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package sarama
import "testing"
var (
endTxnRequest = []byte{
0, 3, 't', 'x', 'n',
0, 0, 0, 0, 0, 0, 31, 64,
0, 1,
1,
}
)
func TestEndTxnRequest(t *testing.T) {
req := &EndTxnRequest{
TransactionalID: "txn",
ProducerID: 8000,
ProducerEpoch: 1,
TransactionResult: true,
}
testRequest(t, "", req, endTxnRequest)
}

44
third/github.com/Shopify/sarama/end_txn_response.go Normal file
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package sarama
import (
"time"
)
type EndTxnResponse struct {
ThrottleTime time.Duration
Err KError
}
func (e *EndTxnResponse) encode(pe packetEncoder) error {
pe.putInt32(int32(e.ThrottleTime / time.Millisecond))
pe.putInt16(int16(e.Err))
return nil
}
func (e *EndTxnResponse) decode(pd packetDecoder, version int16) (err error) {
throttleTime, err := pd.getInt32()
if err != nil {
return err
}
e.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
kerr, err := pd.getInt16()
if err != nil {
return err
}
e.Err = KError(kerr)
return nil
}
func (e *EndTxnResponse) key() int16 {
return 25
}
func (e *EndTxnResponse) version() int16 {
return 0
}
func (e *EndTxnResponse) requiredVersion() KafkaVersion {
return V0_11_0_0
}

22
third/github.com/Shopify/sarama/end_txn_response_test.go Normal file
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package sarama
import (
"testing"
"time"
)
var (
endTxnResponse = []byte{
0, 0, 0, 100,
0, 49,
}
)
func TestEndTxnResponse(t *testing.T) {
resp := &EndTxnResponse{
ThrottleTime: 100 * time.Millisecond,
Err: ErrInvalidProducerIDMapping,
}
testResponse(t, "", resp, endTxnResponse)
}

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package sarama
import (
"errors"
"fmt"
)
// ErrOutOfBrokers is the error returned when the client has run out of brokers to talk to because all of them errored
// or otherwise failed to respond.
var ErrOutOfBrokers = errors.New("kafka: client has run out of available brokers to talk to (Is your cluster reachable?)")
// ErrClosedClient is the error returned when a method is called on a client that has been closed.
var ErrClosedClient = errors.New("kafka: tried to use a client that was closed")
// ErrIncompleteResponse is the error returned when the server returns a syntactically valid response, but it does
// not contain the expected information.
var ErrIncompleteResponse = errors.New("kafka: response did not contain all the expected topic/partition blocks")
// ErrInvalidPartition is the error returned when a partitioner returns an invalid partition index
// (meaning one outside of the range [0...numPartitions-1]).
var ErrInvalidPartition = errors.New("kafka: partitioner returned an invalid partition index")
// ErrAlreadyConnected is the error returned when calling Open() on a Broker that is already connected or connecting.
var ErrAlreadyConnected = errors.New("kafka: broker connection already initiated")
// ErrNotConnected is the error returned when trying to send or call Close() on a Broker that is not connected.
var ErrNotConnected = errors.New("kafka: broker not connected")
// ErrInsufficientData is returned when decoding and the packet is truncated. This can be expected
// when requesting messages, since as an optimization the server is allowed to return a partial message at the end
// of the message set.
var ErrInsufficientData = errors.New("kafka: insufficient data to decode packet, more bytes expected")
// ErrShuttingDown is returned when a producer receives a message during shutdown.
var ErrShuttingDown = errors.New("kafka: message received by producer in process of shutting down")
// ErrMessageTooLarge is returned when the next message to consume is larger than the configured Consumer.Fetch.Max
var ErrMessageTooLarge = errors.New("kafka: message is larger than Consumer.Fetch.Max")
// ErrConsumerOffsetNotAdvanced is returned when a partition consumer didn't advance its offset after parsing
// a RecordBatch.
var ErrConsumerOffsetNotAdvanced = errors.New("kafka: consumer offset was not advanced after a RecordBatch")
// ErrControllerNotAvailable is returned when server didn't give correct controller id. May be kafka server's version
// is lower than 0.10.0.0.
var ErrControllerNotAvailable = errors.New("kafka: controller is not available")
// ErrNoTopicsToUpdateMetadata is returned when Meta.Full is set to false but no specific topics were found to update
// the metadata.
var ErrNoTopicsToUpdateMetadata = errors.New("kafka: no specific topics to update metadata")
// PacketEncodingError is returned from a failure while encoding a Kafka packet. This can happen, for example,
// if you try to encode a string over 2^15 characters in length, since Kafka's encoding rules do not permit that.
type PacketEncodingError struct {
Info string
}
func (err PacketEncodingError) Error() string {
return fmt.Sprintf("kafka: error encoding packet: %s", err.Info)
}
// PacketDecodingError is returned when there was an error (other than truncated data) decoding the Kafka broker's response.
// This can be a bad CRC or length field, or any other invalid value.
type PacketDecodingError struct {
Info string
}
func (err PacketDecodingError) Error() string {
return fmt.Sprintf("kafka: error decoding packet: %s", err.Info)
}
// ConfigurationError is the type of error returned from a constructor (e.g. NewClient, or NewConsumer)
// when the specified configuration is invalid.
type ConfigurationError string
func (err ConfigurationError) Error() string {
return "kafka: invalid configuration (" + string(err) + ")"
}
// KError is the type of error that can be returned directly by the Kafka broker.
// See https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol#AGuideToTheKafkaProtocol-ErrorCodes
type KError int16
// Numeric error codes returned by the Kafka server.
const (
ErrNoError KError = 0
ErrUnknown KError = -1
ErrOffsetOutOfRange KError = 1
ErrInvalidMessage KError = 2
ErrUnknownTopicOrPartition KError = 3
ErrInvalidMessageSize KError = 4
ErrLeaderNotAvailable KError = 5
ErrNotLeaderForPartition KError = 6
ErrRequestTimedOut KError = 7
ErrBrokerNotAvailable KError = 8
ErrReplicaNotAvailable KError = 9
ErrMessageSizeTooLarge KError = 10
ErrStaleControllerEpochCode KError = 11
ErrOffsetMetadataTooLarge KError = 12
ErrNetworkException KError = 13
ErrOffsetsLoadInProgress KError = 14
ErrConsumerCoordinatorNotAvailable KError = 15
ErrNotCoordinatorForConsumer KError = 16
ErrInvalidTopic KError = 17
ErrMessageSetSizeTooLarge KError = 18
ErrNotEnoughReplicas KError = 19
ErrNotEnoughReplicasAfterAppend KError = 20
ErrInvalidRequiredAcks KError = 21
ErrIllegalGeneration KError = 22
ErrInconsistentGroupProtocol KError = 23
ErrInvalidGroupId KError = 24
ErrUnknownMemberId KError = 25
ErrInvalidSessionTimeout KError = 26
ErrRebalanceInProgress KError = 27
ErrInvalidCommitOffsetSize KError = 28
ErrTopicAuthorizationFailed KError = 29
ErrGroupAuthorizationFailed KError = 30
ErrClusterAuthorizationFailed KError = 31
ErrInvalidTimestamp KError = 32
ErrUnsupportedSASLMechanism KError = 33
ErrIllegalSASLState KError = 34
ErrUnsupportedVersion KError = 35
ErrTopicAlreadyExists KError = 36
ErrInvalidPartitions KError = 37
ErrInvalidReplicationFactor KError = 38
ErrInvalidReplicaAssignment KError = 39
ErrInvalidConfig KError = 40
ErrNotController KError = 41
ErrInvalidRequest KError = 42
ErrUnsupportedForMessageFormat KError = 43
ErrPolicyViolation KError = 44
ErrOutOfOrderSequenceNumber KError = 45
ErrDuplicateSequenceNumber KError = 46
ErrInvalidProducerEpoch KError = 47
ErrInvalidTxnState KError = 48
ErrInvalidProducerIDMapping KError = 49
ErrInvalidTransactionTimeout KError = 50
ErrConcurrentTransactions KError = 51
ErrTransactionCoordinatorFenced KError = 52
ErrTransactionalIDAuthorizationFailed KError = 53
ErrSecurityDisabled KError = 54
ErrOperationNotAttempted KError = 55
ErrKafkaStorageError KError = 56
ErrLogDirNotFound KError = 57
ErrSASLAuthenticationFailed KError = 58
ErrUnknownProducerID KError = 59
ErrReassignmentInProgress KError = 60
)
func (err KError) Error() string {
// Error messages stolen/adapted from
// https://kafka.apache.org/protocol#protocol_error_codes
switch err {
case ErrNoError:
return "kafka server: Not an error, why are you printing me?"
case ErrUnknown:
return "kafka server: Unexpected (unknown?) server error."
case ErrOffsetOutOfRange:
return "kafka server: The requested offset is outside the range of offsets maintained by the server for the given topic/partition."
case ErrInvalidMessage:
return "kafka server: Message contents does not match its CRC."
case ErrUnknownTopicOrPartition:
return "kafka server: Request was for a topic or partition that does not exist on this broker."
case ErrInvalidMessageSize:
return "kafka server: The message has a negative size."
case ErrLeaderNotAvailable:
return "kafka server: In the middle of a leadership election, there is currently no leader for this partition and hence it is unavailable for writes."
case ErrNotLeaderForPartition:
return "kafka server: Tried to send a message to a replica that is not the leader for some partition. Your metadata is out of date."
case ErrRequestTimedOut:
return "kafka server: Request exceeded the user-specified time limit in the request."
case ErrBrokerNotAvailable:
return "kafka server: Broker not available. Not a client facing error, we should never receive this!!!"
case ErrReplicaNotAvailable:
return "kafka server: Replica information not available, one or more brokers are down."
case ErrMessageSizeTooLarge:
return "kafka server: Message was too large, server rejected it to avoid allocation error."
case ErrStaleControllerEpochCode:
return "kafka server: StaleControllerEpochCode (internal error code for broker-to-broker communication)."
case ErrOffsetMetadataTooLarge:
return "kafka server: Specified a string larger than the configured maximum for offset metadata."
case ErrNetworkException:
return "kafka server: The server disconnected before a response was received."
case ErrOffsetsLoadInProgress:
return "kafka server: The broker is still loading offsets after a leader change for that offset's topic partition."
case ErrConsumerCoordinatorNotAvailable:
return "kafka server: Offset's topic has not yet been created."
case ErrNotCoordinatorForConsumer:
return "kafka server: Request was for a consumer group that is not coordinated by this broker."
case ErrInvalidTopic:
return "kafka server: The request attempted to perform an operation on an invalid topic."
case ErrMessageSetSizeTooLarge:
return "kafka server: The request included message batch larger than the configured segment size on the server."
case ErrNotEnoughReplicas:
return "kafka server: Messages are rejected since there are fewer in-sync replicas than required."
case ErrNotEnoughReplicasAfterAppend:
return "kafka server: Messages are written to the log, but to fewer in-sync replicas than required."
case ErrInvalidRequiredAcks:
return "kafka server: The number of required acks is invalid (should be either -1, 0, or 1)."
case ErrIllegalGeneration:
return "kafka server: The provided generation id is not the current generation."
case ErrInconsistentGroupProtocol:
return "kafka server: The provider group protocol type is incompatible with the other members."
case ErrInvalidGroupId:
return "kafka server: The provided group id was empty."
case ErrUnknownMemberId:
return "kafka server: The provided member is not known in the current generation."
case ErrInvalidSessionTimeout:
return "kafka server: The provided session timeout is outside the allowed range."
case ErrRebalanceInProgress:
return "kafka server: A rebalance for the group is in progress. Please re-join the group."
case ErrInvalidCommitOffsetSize:
return "kafka server: The provided commit metadata was too large."
case ErrTopicAuthorizationFailed:
return "kafka server: The client is not authorized to access this topic."
case ErrGroupAuthorizationFailed:
return "kafka server: The client is not authorized to access this group."
case ErrClusterAuthorizationFailed:
return "kafka server: The client is not authorized to send this request type."
case ErrInvalidTimestamp:
return "kafka server: The timestamp of the message is out of acceptable range."
case ErrUnsupportedSASLMechanism:
return "kafka server: The broker does not support the requested SASL mechanism."
case ErrIllegalSASLState:
return "kafka server: Request is not valid given the current SASL state."
case ErrUnsupportedVersion:
return "kafka server: The version of API is not supported."
case ErrTopicAlreadyExists:
return "kafka server: Topic with this name already exists."
case ErrInvalidPartitions:
return "kafka server: Number of partitions is invalid."
case ErrInvalidReplicationFactor:
return "kafka server: Replication-factor is invalid."
case ErrInvalidReplicaAssignment:
return "kafka server: Replica assignment is invalid."
case ErrInvalidConfig:
return "kafka server: Configuration is invalid."
case ErrNotController:
return "kafka server: This is not the correct controller for this cluster."
case ErrInvalidRequest:
return "kafka server: This most likely occurs because of a request being malformed by the client library or the message was sent to an incompatible broker. See the broker logs for more details."
case ErrUnsupportedForMessageFormat:
return "kafka server: The requested operation is not supported by the message format version."
case ErrPolicyViolation:
return "kafka server: Request parameters do not satisfy the configured policy."
case ErrOutOfOrderSequenceNumber:
return "kafka server: The broker received an out of order sequence number."
case ErrDuplicateSequenceNumber:
return "kafka server: The broker received a duplicate sequence number."
case ErrInvalidProducerEpoch:
return "kafka server: Producer attempted an operation with an old epoch."
case ErrInvalidTxnState:
return "kafka server: The producer attempted a transactional operation in an invalid state."
case ErrInvalidProducerIDMapping:
return "kafka server: The producer attempted to use a producer id which is not currently assigned to its transactional id."
case ErrInvalidTransactionTimeout:
return "kafka server: The transaction timeout is larger than the maximum value allowed by the broker (as configured by max.transaction.timeout.ms)."
case ErrConcurrentTransactions:
return "kafka server: The producer attempted to update a transaction while another concurrent operation on the same transaction was ongoing."
case ErrTransactionCoordinatorFenced:
return "kafka server: The transaction coordinator sending a WriteTxnMarker is no longer the current coordinator for a given producer."
case ErrTransactionalIDAuthorizationFailed:
return "kafka server: Transactional ID authorization failed."
case ErrSecurityDisabled:
return "kafka server: Security features are disabled."
case ErrOperationNotAttempted:
return "kafka server: The broker did not attempt to execute this operation."
case ErrKafkaStorageError:
return "kafka server: Disk error when trying to access log file on the disk."
case ErrLogDirNotFound:
return "kafka server: The specified log directory is not found in the broker config."
case ErrSASLAuthenticationFailed:
return "kafka server: SASL Authentication failed."
case ErrUnknownProducerID:
return "kafka server: The broker could not locate the producer metadata associated with the Producer ID."
case ErrReassignmentInProgress:
return "kafka server: A partition reassignment is in progress."
}
return fmt.Sprintf("Unknown error, how did this happen? Error code = %d", err)
}

170
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package sarama
type fetchRequestBlock struct {
fetchOffset int64
maxBytes int32
}
func (b *fetchRequestBlock) encode(pe packetEncoder) error {
pe.putInt64(b.fetchOffset)
pe.putInt32(b.maxBytes)
return nil
}
func (b *fetchRequestBlock) decode(pd packetDecoder) (err error) {
if b.fetchOffset, err = pd.getInt64(); err != nil {
return err
}
if b.maxBytes, err = pd.getInt32(); err != nil {
return err
}
return nil
}
// FetchRequest (API key 1) will fetch Kafka messages. Version 3 introduced the MaxBytes field. See
// https://issues.apache.org/jira/browse/KAFKA-2063 for a discussion of the issues leading up to that. The KIP is at
// https://cwiki.apache.org/confluence/display/KAFKA/KIP-74%3A+Add+Fetch+Response+Size+Limit+in+Bytes
type FetchRequest struct {
MaxWaitTime int32
MinBytes int32
MaxBytes int32
Version int16
Isolation IsolationLevel
blocks map[string]map[int32]*fetchRequestBlock
}
type IsolationLevel int8
const (
ReadUncommitted IsolationLevel = 0
ReadCommitted IsolationLevel = 1
)
func (r *FetchRequest) encode(pe packetEncoder) (err error) {
pe.putInt32(-1) // replica ID is always -1 for clients
pe.putInt32(r.MaxWaitTime)
pe.putInt32(r.MinBytes)
if r.Version >= 3 {
pe.putInt32(r.MaxBytes)
}
if r.Version >= 4 {
pe.putInt8(int8(r.Isolation))
}
err = pe.putArrayLength(len(r.blocks))
if err != nil {
return err
}
for topic, blocks := range r.blocks {
err = pe.putString(topic)
if err != nil {
return err
}
err = pe.putArrayLength(len(blocks))
if err != nil {
return err
}
for partition, block := range blocks {
pe.putInt32(partition)
err = block.encode(pe)
if err != nil {
return err
}
}
}
return nil
}
func (r *FetchRequest) decode(pd packetDecoder, version int16) (err error) {
r.Version = version
if _, err = pd.getInt32(); err != nil {
return err
}
if r.MaxWaitTime, err = pd.getInt32(); err != nil {
return err
}
if r.MinBytes, err = pd.getInt32(); err != nil {
return err
}
if r.Version >= 3 {
if r.MaxBytes, err = pd.getInt32(); err != nil {
return err
}
}
if r.Version >= 4 {
isolation, err := pd.getInt8()
if err != nil {
return err
}
r.Isolation = IsolationLevel(isolation)
}
topicCount, err := pd.getArrayLength()
if err != nil {
return err
}
if topicCount == 0 {
return nil
}
r.blocks = make(map[string]map[int32]*fetchRequestBlock)
for i := 0; i < topicCount; i++ {
topic, err := pd.getString()
if err != nil {
return err
}
partitionCount, err := pd.getArrayLength()
if err != nil {
return err
}
r.blocks[topic] = make(map[int32]*fetchRequestBlock)
for j := 0; j < partitionCount; j++ {
partition, err := pd.getInt32()
if err != nil {
return err
}
fetchBlock := &fetchRequestBlock{}
if err = fetchBlock.decode(pd); err != nil {
return err
}
r.blocks[topic][partition] = fetchBlock
}
}
return nil
}
func (r *FetchRequest) key() int16 {
return 1
}
func (r *FetchRequest) version() int16 {
return r.Version
}
func (r *FetchRequest) requiredVersion() KafkaVersion {
switch r.Version {
case 1:
return V0_9_0_0
case 2:
return V0_10_0_0
case 3:
return V0_10_1_0
case 4:
return V0_11_0_0
default:
return MinVersion
}
}
func (r *FetchRequest) AddBlock(topic string, partitionID int32, fetchOffset int64, maxBytes int32) {
if r.blocks == nil {
r.blocks = make(map[string]map[int32]*fetchRequestBlock)
}
if r.blocks[topic] == nil {
r.blocks[topic] = make(map[int32]*fetchRequestBlock)
}
tmp := new(fetchRequestBlock)
tmp.maxBytes = maxBytes
tmp.fetchOffset = fetchOffset
r.blocks[topic][partitionID] = tmp
}

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third/github.com/Shopify/sarama/fetch_request_test.go Normal file
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package sarama
import "testing"
var (
fetchRequestNoBlocks = []byte{
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00}
fetchRequestWithProperties = []byte{
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0xEF,
0x00, 0x00, 0x00, 0x00}
fetchRequestOneBlock = []byte{
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01,
0x00, 0x05, 't', 'o', 'p', 'i', 'c',
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x56}
fetchRequestOneBlockV4 = []byte{
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xFF,
0x01,
0x00, 0x00, 0x00, 0x01,
0x00, 0x05, 't', 'o', 'p', 'i', 'c',
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x56}
)
func TestFetchRequest(t *testing.T) {
request := new(FetchRequest)
testRequest(t, "no blocks", request, fetchRequestNoBlocks)
request.MaxWaitTime = 0x20
request.MinBytes = 0xEF
testRequest(t, "with properties", request, fetchRequestWithProperties)
request.MaxWaitTime = 0
request.MinBytes = 0
request.AddBlock("topic", 0x12, 0x34, 0x56)
testRequest(t, "one block", request, fetchRequestOneBlock)
request.Version = 4
request.MaxBytes = 0xFF
request.Isolation = ReadCommitted
testRequest(t, "one block v4", request, fetchRequestOneBlockV4)
}

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third/github.com/Shopify/sarama/fetch_response.go Normal file
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package sarama
import (
"time"
)
type AbortedTransaction struct {
ProducerID int64
FirstOffset int64
}
func (t *AbortedTransaction) decode(pd packetDecoder) (err error) {
if t.ProducerID, err = pd.getInt64(); err != nil {
return err
}
if t.FirstOffset, err = pd.getInt64(); err != nil {
return err
}
return nil
}
func (t *AbortedTransaction) encode(pe packetEncoder) (err error) {
pe.putInt64(t.ProducerID)
pe.putInt64(t.FirstOffset)
return nil
}
type FetchResponseBlock struct {
Err KError
HighWaterMarkOffset int64
LastStableOffset int64
AbortedTransactions []*AbortedTransaction
Records *Records // deprecated: use FetchResponseBlock.Records
RecordsSet []*Records
Partial bool
}
func (b *FetchResponseBlock) decode(pd packetDecoder, version int16) (err error) {
tmp, err := pd.getInt16()
if err != nil {
return err
}
b.Err = KError(tmp)
b.HighWaterMarkOffset, err = pd.getInt64()
if err != nil {
return err
}
if version >= 4 {
b.LastStableOffset, err = pd.getInt64()
if err != nil {
return err
}
numTransact, err := pd.getArrayLength()
if err != nil {
return err
}
if numTransact >= 0 {
b.AbortedTransactions = make([]*AbortedTransaction, numTransact)
}
for i := 0; i < numTransact; i++ {
transact := new(AbortedTransaction)
if err = transact.decode(pd); err != nil {
return err
}
b.AbortedTransactions[i] = transact
}
}
recordsSize, err := pd.getInt32()
if err != nil {
return err
}
recordsDecoder, err := pd.getSubset(int(recordsSize))
if err != nil {
return err
}
b.RecordsSet = []*Records{}
for recordsDecoder.remaining() > 0 {
records := &Records{}
if err := records.decode(recordsDecoder); err != nil {
// If we have at least one decoded records, this is not an error
if err == ErrInsufficientData {
if len(b.RecordsSet) == 0 {
b.Partial = true
}
break
}
return err
}
partial, err := records.isPartial()
if err != nil {
return err
}
// If we have at least one full records, we skip incomplete ones
if partial && len(b.RecordsSet) > 0 {
break
}
b.RecordsSet = append(b.RecordsSet, records)
if b.Records == nil {
b.Records = records
}
}
return nil
}
func (b *FetchResponseBlock) numRecords() (int, error) {
sum := 0
for _, records := range b.RecordsSet {
count, err := records.numRecords()
if err != nil {
return 0, err
}
sum += count
}
return sum, nil
}
func (b *FetchResponseBlock) isPartial() (bool, error) {
if b.Partial {
return true, nil
}
if len(b.RecordsSet) == 1 {
return b.RecordsSet[0].isPartial()
}
return false, nil
}
func (b *FetchResponseBlock) encode(pe packetEncoder, version int16) (err error) {
pe.putInt16(int16(b.Err))
pe.putInt64(b.HighWaterMarkOffset)
if version >= 4 {
pe.putInt64(b.LastStableOffset)
if err = pe.putArrayLength(len(b.AbortedTransactions)); err != nil {
return err
}
for _, transact := range b.AbortedTransactions {
if err = transact.encode(pe); err != nil {
return err
}
}
}
pe.push(&lengthField{})
for _, records := range b.RecordsSet {
err = records.encode(pe)
if err != nil {
return err
}
}
return pe.pop()
}
type FetchResponse struct {
Blocks map[string]map[int32]*FetchResponseBlock
ThrottleTime time.Duration
Version int16 // v1 requires 0.9+, v2 requires 0.10+
}
func (r *FetchResponse) decode(pd packetDecoder, version int16) (err error) {
r.Version = version
if r.Version >= 1 {
throttle, err := pd.getInt32()
if err != nil {
return err
}
r.ThrottleTime = time.Duration(throttle) * time.Millisecond
}
numTopics, err := pd.getArrayLength()
if err != nil {
return err
}
r.Blocks = make(map[string]map[int32]*FetchResponseBlock, numTopics)
for i := 0; i < numTopics; i++ {
name, err := pd.getString()
if err != nil {
return err
}
numBlocks, err := pd.getArrayLength()
if err != nil {
return err
}
r.Blocks[name] = make(map[int32]*FetchResponseBlock, numBlocks)
for j := 0; j < numBlocks; j++ {
id, err := pd.getInt32()
if err != nil {
return err
}
block := new(FetchResponseBlock)
err = block.decode(pd, version)
if err != nil {
return err
}
r.Blocks[name][id] = block
}
}
return nil
}
func (r *FetchResponse) encode(pe packetEncoder) (err error) {
if r.Version >= 1 {
pe.putInt32(int32(r.ThrottleTime / time.Millisecond))
}
err = pe.putArrayLength(len(r.Blocks))
if err != nil {
return err
}
for topic, partitions := range r.Blocks {
err = pe.putString(topic)
if err != nil {
return err
}
err = pe.putArrayLength(len(partitions))
if err != nil {
return err
}
for id, block := range partitions {
pe.putInt32(id)
err = block.encode(pe, r.Version)
if err != nil {
return err
}
}
}
return nil
}
func (r *FetchResponse) key() int16 {
return 1
}
func (r *FetchResponse) version() int16 {
return r.Version
}
func (r *FetchResponse) requiredVersion() KafkaVersion {
switch r.Version {
case 1:
return V0_9_0_0
case 2:
return V0_10_0_0
case 3:
return V0_10_1_0
case 4:
return V0_11_0_0
default:
return MinVersion
}
}
func (r *FetchResponse) GetBlock(topic string, partition int32) *FetchResponseBlock {
if r.Blocks == nil {
return nil
}
if r.Blocks[topic] == nil {
return nil
}
return r.Blocks[topic][partition]
}
func (r *FetchResponse) AddError(topic string, partition int32, err KError) {
if r.Blocks == nil {
r.Blocks = make(map[string]map[int32]*FetchResponseBlock)
}
partitions, ok := r.Blocks[topic]
if !ok {
partitions = make(map[int32]*FetchResponseBlock)
r.Blocks[topic] = partitions
}
frb, ok := partitions[partition]
if !ok {
frb = new(FetchResponseBlock)
partitions[partition] = frb
}
frb.Err = err
}
func (r *FetchResponse) getOrCreateBlock(topic string, partition int32) *FetchResponseBlock {
if r.Blocks == nil {
r.Blocks = make(map[string]map[int32]*FetchResponseBlock)
}
partitions, ok := r.Blocks[topic]
if !ok {
partitions = make(map[int32]*FetchResponseBlock)
r.Blocks[topic] = partitions
}
frb, ok := partitions[partition]
if !ok {
frb = new(FetchResponseBlock)
partitions[partition] = frb
}
return frb
}
func encodeKV(key, value Encoder) ([]byte, []byte) {
var kb []byte
var vb []byte
if key != nil {
kb, _ = key.Encode()
}
if value != nil {
vb, _ = value.Encode()
}
return kb, vb
}
func (r *FetchResponse) AddMessage(topic string, partition int32, key, value Encoder, offset int64) {
frb := r.getOrCreateBlock(topic, partition)
kb, vb := encodeKV(key, value)
msg := &Message{Key: kb, Value: vb}
msgBlock := &MessageBlock{Msg: msg, Offset: offset}
if len(frb.RecordsSet) == 0 {
records := newLegacyRecords(&MessageSet{})
frb.RecordsSet = []*Records{&records}
}
set := frb.RecordsSet[0].MsgSet
set.Messages = append(set.Messages, msgBlock)
}
func (r *FetchResponse) AddRecord(topic string, partition int32, key, value Encoder, offset int64) {
frb := r.getOrCreateBlock(topic, partition)
kb, vb := encodeKV(key, value)
rec := &Record{Key: kb, Value: vb, OffsetDelta: offset}
if len(frb.RecordsSet) == 0 {
records := newDefaultRecords(&RecordBatch{Version: 2})
frb.RecordsSet = []*Records{&records}
}
batch := frb.RecordsSet[0].RecordBatch
batch.addRecord(rec)
}
func (r *FetchResponse) SetLastOffsetDelta(topic string, partition int32, offset int32) {
frb := r.getOrCreateBlock(topic, partition)
if len(frb.RecordsSet) == 0 {
records := newDefaultRecords(&RecordBatch{Version: 2})
frb.RecordsSet = []*Records{&records}
}
batch := frb.RecordsSet[0].RecordBatch
batch.LastOffsetDelta = offset
}
func (r *FetchResponse) SetLastStableOffset(topic string, partition int32, offset int64) {
frb := r.getOrCreateBlock(topic, partition)
frb.LastStableOffset = offset
}

248
third/github.com/Shopify/sarama/fetch_response_test.go Normal file
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@ -0,0 +1,248 @@
package sarama
import (
"bytes"
"testing"
)
var (
emptyFetchResponse = []byte{
0x00, 0x00, 0x00, 0x00}
oneMessageFetchResponse = []byte{
0x00, 0x00, 0x00, 0x01,
0x00, 0x05, 't', 'o', 'p', 'i', 'c',
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x05,
0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10,
0x00, 0x00, 0x00, 0x1C,
// messageSet
0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00,
0x00, 0x00, 0x00, 0x10,
// message
0x23, 0x96, 0x4a, 0xf7, // CRC
0x00,
0x00,
0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x02, 0x00, 0xEE}
oneRecordFetchResponse = []byte{
0x00, 0x00, 0x00, 0x00, // ThrottleTime
0x00, 0x00, 0x00, 0x01, // Number of Topics
0x00, 0x05, 't', 'o', 'p', 'i', 'c', // Topic
0x00, 0x00, 0x00, 0x01, // Number of Partitions
0x00, 0x00, 0x00, 0x05, // Partition
0x00, 0x01, // Error
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, // High Watermark Offset
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, // Last Stable Offset
0x00, 0x00, 0x00, 0x00, // Number of Aborted Transactions
0x00, 0x00, 0x00, 0x52, // Records length
// recordBatch
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x46,
0x00, 0x00, 0x00, 0x00,
0x02,
0xDB, 0x47, 0x14, 0xC9,
0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01,
// record
0x28,
0x00,
0x0A,
0x00,
0x08, 0x01, 0x02, 0x03, 0x04,
0x06, 0x05, 0x06, 0x07,
0x02,
0x06, 0x08, 0x09, 0x0A,
0x04, 0x0B, 0x0C}
oneMessageFetchResponseV4 = []byte{
0x00, 0x00, 0x00, 0x00, // ThrottleTime
0x00, 0x00, 0x00, 0x01, // Number of Topics
0x00, 0x05, 't', 'o', 'p', 'i', 'c', // Topic
0x00, 0x00, 0x00, 0x01, // Number of Partitions
0x00, 0x00, 0x00, 0x05, // Partition
0x00, 0x01, // Error
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, // High Watermark Offset
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, // Last Stable Offset
0x00, 0x00, 0x00, 0x00, // Number of Aborted Transactions
0x00, 0x00, 0x00, 0x1C,
// messageSet
0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00,
0x00, 0x00, 0x00, 0x10,
// message
0x23, 0x96, 0x4a, 0xf7, // CRC
0x00,
0x00,
0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x02, 0x00, 0xEE}
)
func TestEmptyFetchResponse(t *testing.T) {
response := FetchResponse{}
testVersionDecodable(t, "empty", &response, emptyFetchResponse, 0)
if len(response.Blocks) != 0 {
t.Error("Decoding produced topic blocks where there were none.")
}
}
func TestOneMessageFetchResponse(t *testing.T) {
response := FetchResponse{}
testVersionDecodable(t, "one message", &response, oneMessageFetchResponse, 0)
if len(response.Blocks) != 1 {
t.Fatal("Decoding produced incorrect number of topic blocks.")
}
if len(response.Blocks["topic"]) != 1 {
t.Fatal("Decoding produced incorrect number of partition blocks for topic.")
}
block := response.GetBlock("topic", 5)
if block == nil {
t.Fatal("GetBlock didn't return block.")
}
if block.Err != ErrOffsetOutOfRange {
t.Error("Decoding didn't produce correct error code.")
}
if block.HighWaterMarkOffset != 0x10101010 {
t.Error("Decoding didn't produce correct high water mark offset.")
}
partial, err := block.isPartial()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if partial {
t.Error("Decoding detected a partial trailing message where there wasn't one.")
}
n, err := block.numRecords()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if n != 1 {
t.Fatal("Decoding produced incorrect number of messages.")
}
msgBlock := block.RecordsSet[0].MsgSet.Messages[0]
if msgBlock.Offset != 0x550000 {
t.Error("Decoding produced incorrect message offset.")
}
msg := msgBlock.Msg
if msg.Codec != CompressionNone {
t.Error("Decoding produced incorrect message compression.")
}
if msg.Key != nil {
t.Error("Decoding produced message key where there was none.")
}
if !bytes.Equal(msg.Value, []byte{0x00, 0xEE}) {
t.Error("Decoding produced incorrect message value.")
}
}
func TestOneRecordFetchResponse(t *testing.T) {
response := FetchResponse{}
testVersionDecodable(t, "one record", &response, oneRecordFetchResponse, 4)
if len(response.Blocks) != 1 {
t.Fatal("Decoding produced incorrect number of topic blocks.")
}
if len(response.Blocks["topic"]) != 1 {
t.Fatal("Decoding produced incorrect number of partition blocks for topic.")
}
block := response.GetBlock("topic", 5)
if block == nil {
t.Fatal("GetBlock didn't return block.")
}
if block.Err != ErrOffsetOutOfRange {
t.Error("Decoding didn't produce correct error code.")
}
if block.HighWaterMarkOffset != 0x10101010 {
t.Error("Decoding didn't produce correct high water mark offset.")
}
partial, err := block.isPartial()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if partial {
t.Error("Decoding detected a partial trailing record where there wasn't one.")
}
n, err := block.numRecords()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if n != 1 {
t.Fatal("Decoding produced incorrect number of records.")
}
rec := block.RecordsSet[0].RecordBatch.Records[0]
if !bytes.Equal(rec.Key, []byte{0x01, 0x02, 0x03, 0x04}) {
t.Error("Decoding produced incorrect record key.")
}
if !bytes.Equal(rec.Value, []byte{0x05, 0x06, 0x07}) {
t.Error("Decoding produced incorrect record value.")
}
}
func TestOneMessageFetchResponseV4(t *testing.T) {
response := FetchResponse{}
testVersionDecodable(t, "one message v4", &response, oneMessageFetchResponseV4, 4)
if len(response.Blocks) != 1 {
t.Fatal("Decoding produced incorrect number of topic blocks.")
}
if len(response.Blocks["topic"]) != 1 {
t.Fatal("Decoding produced incorrect number of partition blocks for topic.")
}
block := response.GetBlock("topic", 5)
if block == nil {
t.Fatal("GetBlock didn't return block.")
}
if block.Err != ErrOffsetOutOfRange {
t.Error("Decoding didn't produce correct error code.")
}
if block.HighWaterMarkOffset != 0x10101010 {
t.Error("Decoding didn't produce correct high water mark offset.")
}
partial, err := block.isPartial()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if partial {
t.Error("Decoding detected a partial trailing record where there wasn't one.")
}
n, err := block.numRecords()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if n != 1 {
t.Fatal("Decoding produced incorrect number of records.")
}
msgBlock := block.RecordsSet[0].MsgSet.Messages[0]
if msgBlock.Offset != 0x550000 {
t.Error("Decoding produced incorrect message offset.")
}
msg := msgBlock.Msg
if msg.Codec != CompressionNone {
t.Error("Decoding produced incorrect message compression.")
}
if msg.Key != nil {
t.Error("Decoding produced message key where there was none.")
}
if !bytes.Equal(msg.Value, []byte{0x00, 0xEE}) {
t.Error("Decoding produced incorrect message value.")
}
}

61
third/github.com/Shopify/sarama/find_coordinator_request.go Normal file
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@ -0,0 +1,61 @@
package sarama
type CoordinatorType int8
const (
CoordinatorGroup CoordinatorType = 0
CoordinatorTransaction CoordinatorType = 1
)
type FindCoordinatorRequest struct {
Version int16
CoordinatorKey string
CoordinatorType CoordinatorType
}
func (f *FindCoordinatorRequest) encode(pe packetEncoder) error {
if err := pe.putString(f.CoordinatorKey); err != nil {
return err
}
if f.Version >= 1 {
pe.putInt8(int8(f.CoordinatorType))
}
return nil
}
func (f *FindCoordinatorRequest) decode(pd packetDecoder, version int16) (err error) {
if f.CoordinatorKey, err = pd.getString(); err != nil {
return err
}
if version >= 1 {
f.Version = version
coordinatorType, err := pd.getInt8()
if err != nil {
return err
}
f.CoordinatorType = CoordinatorType(coordinatorType)
}
return nil
}
func (f *FindCoordinatorRequest) key() int16 {
return 10
}
func (f *FindCoordinatorRequest) version() int16 {
return f.Version
}
func (f *FindCoordinatorRequest) requiredVersion() KafkaVersion {
switch f.Version {
case 1:
return V0_11_0_0
default:
return V0_8_2_0
}
}

33
third/github.com/Shopify/sarama/find_coordinator_request_test.go Normal file
View File

@ -0,0 +1,33 @@
package sarama
import "testing"
var (
findCoordinatorRequestConsumerGroup = []byte{
0, 5, 'g', 'r', 'o', 'u', 'p',
0,
}
findCoordinatorRequestTransaction = []byte{
0, 13, 't', 'r', 'a', 'n', 's', 'a', 'c', 't', 'i', 'o', 'n', 'i', 'd',
1,
}
)
func TestFindCoordinatorRequest(t *testing.T) {
req := &FindCoordinatorRequest{
Version: 1,
CoordinatorKey: "group",
CoordinatorType: CoordinatorGroup,
}
testRequest(t, "version 1 - group", req, findCoordinatorRequestConsumerGroup)
req = &FindCoordinatorRequest{
Version: 1,
CoordinatorKey: "transactionid",
CoordinatorType: CoordinatorTransaction,
}
testRequest(t, "version 1 - transaction", req, findCoordinatorRequestTransaction)
}

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