import ("context""go.opentelemetry.io/otel""go.opentelemetry.io/otel/attribute""go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc""go.opentelemetry.io/otel/propagation""go.opentelemetry.io/otel/sdk/resource"sdktrace "go.opentelemetry.io/otel/sdk/trace""log"_ "os")// Init configures an OpenTelemetry exporter and trace providerfunc Init(ctx context.Context) *sdktrace.TracerProvider {//New otlp exporteropts := []otlptracegrpc.Option{// 配置上报地址,如 config.yaml 里已配置,此处可忽略otlptracegrpc.WithEndpoint("{接入点信息}"), otlptracegrpc.WithInsecure(),}exporter, err := otlptracegrpc.New(ctx,opts...)if err != nil {log.Fatal(err)}//Resource 设置上报 Token,也可以直接配置环境变量来设置 token: OTEL_RESOURCE_ATTRIBUTES=token=xxxxxxxxx 如 config.yaml 里已配置,此处可忽略r,err := resource.New(ctx,[]resource.Option{resource.WithAttributes(attribute.KeyValue{Key: "token",Value: attribute.StringValue("{上报token}"),}),}...)if err != nil{log.Fatal(err)}//创建一个新的TracerProvidertp := sdktrace.NewTracerProvider(sdktrace.WithSampler(sdktrace.AlwaysSample()),sdktrace.WithBatcher(exporter),sdktrace.WithResource(r),)otel.SetTracerProvider(tp)otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))return tp}
func main() {tp := trace.Init() //初始化工作,Init方法即为上述的构造方法defer func() {if err := tp.Shutdown(context.Background()); err != nil {log.Printf("Error shutting down tracer provider: %v", err)}}()host := os.Getenv("grpc1")lis, err := net.Listen("tcp", host+":7778")if err != nil {log.Fatalf("failed to listen: %v", err)}s := grpc.NewServer(grpc.UnaryInterceptor(otelgrpc.UnaryServerInterceptor()), //设置拦截器进行埋点grpc.StreamInterceptor(otelgrpc.StreamServerInterceptor()),)api.RegisterHelloServiceServer(s, &server{}) //注册服务,具体服务代码可自行更改reflection.Register(s)if err := s.Serve(lis); err != nil {log.Fatalf("failed to serve: %v", err)}}
func main() {tp := trace.Init() //初始化fmt.Println("tp create success")defer func() {if err := tp.Shutdown(context.Background()); err != nil {log.Printf("Error shutting down tracer provider: %v", err)}}()fmt.Println("aaa")conn, err := grpc.DialContext(context.Background(), "localhost:7778", grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithBlock()) //建立连接fmt.Println("pro")if err != nil {log.Fatalf("did not connect: %v", err)}defer conn.Close()fmt.Println("conn")c := api.NewHelloServiceClient(conn) //客户端代码for {callSayHelloClientStream(c)time.Sleep(100 * time.Millisecond)}
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