add tracing

config/cmd/cmd.go

@@ -217,7 +217,6 @@ var (
 			Name:    "tracer",
 			EnvVars: []string{"MICRO_TRACER"},
 			Usage:   "Tracer for distributed tracing, e.g. memory, jaeger",
-			Value:   "memory",
 		},
 		&cli.StringFlag{
 			Name:    "tracer_address",

debug/service/client.go

@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"github.com/micro/go-micro/v2/client"
-
 	"github.com/micro/go-micro/v2/debug/log"
 	pb "github.com/micro/go-micro/v2/debug/service/proto"
 )
@@ -16,6 +15,14 @@ type debugClient struct {
 	Client pb.DebugService
 }
 
+func (d *debugClient) Trace() ([]*pb.Span, error) {
+	rsp, err := d.Client.Trace(context.Background(), &pb.TraceRequest{})
+	if err != nil {
+		return nil, err
+	}
+	return rsp.Spans, nil
+}
+
 // Logs queries the services logs and returns a channel to read the logs from
 func (d *debugClient) Log(since time.Time, count int, stream bool) (log.Stream, error) {
 	req := &pb.LogRequest{}

debug/service/proto/debug.proto

@@ -1,9 +1,9 @@
 syntax = "proto3";
 
 service Debug {
+        rpc Log(LogRequest) returns (stream Record) {};
         rpc Health(HealthRequest) returns (HealthResponse) {};
         rpc Stats(StatsRequest) returns (StatsResponse) {};
-        rpc Log(LogRequest) returns (stream Record) {};
 	rpc Trace(TraceRequest) returns (TraceResponse) {};
 }