75 lines
2.3 KiB
Go
75 lines
2.3 KiB
Go
package jaeger
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import (
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"context"
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"encoding/json"
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"github.com/gogf/gf/v2/frame/g"
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"github.com/gogf/gf/v2/net/ghttp"
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"github.com/gogf/gf/v2/util/gconv"
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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/jaeger"
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"go.opentelemetry.io/otel/sdk/resource"
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"go.opentelemetry.io/otel/sdk/trace"
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semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
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"strconv"
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)
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var Tp = new(trace.TracerProvider)
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func init() {
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jaegerAgent, err := g.Cfg().Get(context.Background(), "jaeger.addr")
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if err != nil {
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panic(err)
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}
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exp, err := jaeger.New(jaeger.WithCollectorEndpoint(jaeger.WithEndpoint(gconv.String(jaegerAgent))))
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if err != nil {
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panic(err)
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}
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serverName, err := g.Cfg().Get(context.Background(), "server.Name")
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if err != nil {
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panic(err)
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}
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// 创建一个 TracerProvider，并将 Jaeger exporter 设置为其处理器
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Tp = trace.NewTracerProvider(
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// 使用 BatchSpanProcessor 可以提高性能，它会批量发送 span
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trace.WithBatcher(exp),
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// 设置资源属性，这些属性会附加到所有导出的 span 上
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trace.WithResource(resource.NewWithAttributes(
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semconv.SchemaURL,
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semconv.ServiceName(gconv.String(serverName)), // 服务名称，在 Jaeger UI 中会显示
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)),
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)
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// 将 TracerProvider 设置为全局，方便在应用的任何地方通过 otel.Tracer() 获取
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otel.SetTracerProvider(Tp)
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}
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func NewTracer(r *ghttp.Request) {
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// 从传入的上下文中获取 Tracer，或者直接使用全局的
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tracer := otel.Tracer(r.GetServeHandler().GetMetaTag("summary"))
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_, span := tracer.Start(r.Context(), r.GetServeHandler().GetMetaTag("summary"))
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defer span.End() // 非常重要：确保 span 在函数结束时被关闭
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span.SetAttributes(attribute.String("request", getParams(r)))
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r.Middleware.Next()
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span.SetAttributes(attribute.String("response", r.Response.BufferString()))
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//span.AddEvent("Saying hello is done")
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}
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func getParams(r *ghttp.Request) string {
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params := map[string]interface{}{}
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if r.Method == "POST" {
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json.Unmarshal(r.GetBody(), ¶ms) //获取raw传参
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}
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if r.Method == "GET" {
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r.Request.ParseForm()
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form := r.Form
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for k, v := range form {
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if vl, e := strconv.Atoi(v[0]); e == nil {
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params[k] = vl
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} else {
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params[k] = v[0]
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}
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}
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}
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rp, _ := json.Marshal(¶ms)
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return string(rp)
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}
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