mirror of
https://gitee.com/johng/gf
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90 lines
2.6 KiB
Go
90 lines
2.6 KiB
Go
// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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// Package otlphttp provides gtrace.Tracer implementation using OpenTelemetry protocol.
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package otlphttp
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import (
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"context"
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"github.com/gogf/gf/v2/net/gipv4"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
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"go.opentelemetry.io/otel/propagation"
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"go.opentelemetry.io/otel/sdk/resource"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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semconv "go.opentelemetry.io/otel/semconv/v1.20.0"
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)
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const (
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tracerHostnameTagKey = "hostname"
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)
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// Init initializes and registers `otlphttp` to global TracerProvider.
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//
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// The output parameter `Shutdown` is used for waiting exported trace spans to be uploaded,
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// which is useful if your program is ending, and you do not want to lose recent spans.
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func Init(serviceName, endpoint, path string) (*sdktrace.TracerProvider, error) {
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// Try retrieving host ip for tracing info.
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var (
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intranetIPArray, err = gipv4.GetIntranetIpArray()
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hostIP = "NoHostIpFound"
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)
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if err != nil {
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return nil, err
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}
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if len(intranetIPArray) == 0 {
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if intranetIPArray, err = gipv4.GetIpArray(); err != nil {
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return nil, err
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}
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}
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if len(intranetIPArray) > 0 {
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hostIP = intranetIPArray[0]
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}
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traceClientHTTP := otlptracehttp.NewClient(
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otlptracehttp.WithEndpoint(endpoint),
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otlptracehttp.WithURLPath(path),
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otlptracehttp.WithInsecure(),
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otlptracehttp.WithCompression(1),
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)
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ctx := context.Background()
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traceExp, err := otlptrace.New(ctx, traceClientHTTP)
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if err != nil {
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return nil, err
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}
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res, err := resource.New(ctx,
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resource.WithFromEnv(),
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resource.WithProcess(),
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resource.WithTelemetrySDK(),
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resource.WithHost(),
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resource.WithAttributes(
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// The name of the service displayed on the traceback end。
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semconv.ServiceNameKey.String(serviceName),
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semconv.HostNameKey.String(hostIP),
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attribute.String(tracerHostnameTagKey, hostIP),
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),
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)
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bsp := sdktrace.NewBatchSpanProcessor(traceExp)
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tracerProvider := sdktrace.NewTracerProvider(
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sdktrace.WithSampler(sdktrace.AlwaysSample()),
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sdktrace.WithResource(res),
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sdktrace.WithSpanProcessor(bsp),
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)
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// Set the global propagator to traceContext (not set by default).
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otel.SetTextMapPropagator(propagation.TraceContext{})
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otel.SetTracerProvider(tracerProvider)
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return tracerProvider, nil
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}
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