Trace type is now being recorded (#1188)

debug/service/handler/debug.go

@@ -66,15 +66,23 @@ func (d *Debug) Trace(ctx context.Context, req *proto.TraceRequest, rsp *proto.T
 		return err
 	}
 
-	for _, trace := range traces {
+	for _, t := range traces {
+		var typ proto.SpanType
+		switch t.Type {
+		case trace.SpanTypeRequestInbound:
+			typ = proto.SpanType_INBOUND
+		case trace.SpanTypeRequestOutbound:
+			typ = proto.SpanType_OUTBOUND
+		}
 		rsp.Spans = append(rsp.Spans, &proto.Span{
-			Trace:    trace.Trace,
+			Trace:    t.Trace,
-			Id:       trace.Id,
+			Id:       t.Id,
-			Parent:   trace.Parent,
+			Parent:   t.Parent,
-			Name:     trace.Name,
+			Name:     t.Name,
-			Started:  uint64(trace.Started.UnixNano()),
+			Started:  uint64(t.Started.UnixNano()),
-			Duration: uint64(trace.Duration.Nanoseconds()),
+			Duration: uint64(t.Duration.Nanoseconds()),
-			Metadata: trace.Metadata,
+			Type:     typ,
+			Metadata: t.Metadata,
 		})
 	}
 

debug/service/proto/debug.pb.go

@@ -20,6 +20,31 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
+type SpanType int32
+
+const (
+	SpanType_INBOUND  SpanType = 0
+	SpanType_OUTBOUND SpanType = 1
+)
+
+var SpanType_name = map[int32]string{
+	0: "INBOUND",
+	1: "OUTBOUND",
+}
+
+var SpanType_value = map[string]int32{
+	"INBOUND":  0,
+	"OUTBOUND": 1,
+}
+
+func (x SpanType) String() string {
+	return proto.EnumName(SpanType_name, int32(x))
+}
+
+func (SpanType) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_dea322649cde1ef2, []int{0}
+}
+
 type HealthRequest struct {
 	// optional service name
 	Service              string   `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
@@ -466,6 +491,7 @@ type Span struct {
 	Duration uint64 `protobuf:"varint,6,opt,name=duration,proto3" json:"duration,omitempty"`
 	// associated metadata
 	Metadata             map[string]string `protobuf:"bytes,7,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	Type                 SpanType          `protobuf:"varint,8,opt,name=type,proto3,enum=SpanType" json:"type,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
 	XXX_unrecognized     []byte            `json:"-"`
 	XXX_sizecache        int32             `json:"-"`
@@ -545,7 +571,15 @@ func (m *Span) GetMetadata() map[string]string {
 	return nil
 }
 
+func (m *Span) GetType() SpanType {
+	if m != nil {
+		return m.Type
+	}
+	return SpanType_INBOUND
+}
+
 func init() {
+	proto.RegisterEnum("SpanType", SpanType_name, SpanType_value)
 	proto.RegisterType((*HealthRequest)(nil), "HealthRequest")
 	proto.RegisterType((*HealthResponse)(nil), "HealthResponse")
 	proto.RegisterType((*StatsRequest)(nil), "StatsRequest")
@@ -564,40 +598,43 @@ func init() {
 }
 
 var fileDescriptor_dea322649cde1ef2 = []byte{
-	// 553 bytes of a gzipped FileDescriptorProto
+	// 595 bytes of a gzipped FileDescriptorProto
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-	0x05, 0x6c, 0xa4, 0x2b, 0x44, 0xe5, 0x6b, 0xcb, 0x1e, 0xb0, 0x51, 0xe7, 0x52, 0x0a, 0xa9, 0xf2,
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-	0xff, 0xc7, 0x3f, 0xbe, 0xe3, 0xa7, 0x04, 0x00, 0x00,
+	0x5f, 0x88, 0xa4, 0x87, 0x16, 0x10, 0x9a, 0x3f, 0x38, 0x9a, 0xa6, 0xfb, 0x6f, 0xc2, 0x7c, 0x96,
+	0x76, 0xfe, 0xf7, 0x96, 0x69, 0x7e, 0x74, 0xc5, 0xdc, 0x0f, 0x87, 0x62, 0x76, 0xb2, 0x90, 0xf4,
+	0xce, 0x06, 0xe6, 0xed, 0x7a, 0xfd, 0x27, 0x00, 0x00, 0xff, 0xff, 0xbc, 0xab, 0x72, 0x03, 0xed,
+	0x04, 0x00, 0x00,
 }

debug/service/proto/debug.proto

@@ -75,6 +75,11 @@ message TraceResponse {
 }
 
 
+enum SpanType {
+    INBOUND = 0;
+    OUTBOUND = 1;
+}
+
 message Span {
 	// the trace id
 	string trace = 1;
@@ -90,4 +95,5 @@ message Span {
 	uint64 duration = 6;
 	// associated metadata
 	map<string,string> metadata = 7;
+	SpanType type = 8;
 }

debug/trace/trace.go

@@ -3,8 +3,9 @@ package trace
 
 import (
 	"context"
-	"github.com/micro/go-micro/v2/metadata"
 	"time"
+
+	"github.com/micro/go-micro/v2/metadata"
 )
 
 // Tracer is an interface for distributed tracing
@@ -17,6 +18,16 @@ type Tracer interface {
 	Read(...ReadOption) ([]*Span, error)
 }
 
+// SpanType describe the nature of the trace span
+type SpanType int
+
+const (
+	// SpanTypeRequestInbound is a span created when serving a request
+	SpanTypeRequestInbound SpanType = iota
+	// SpanTypeRequestOutbound is a span created when making a service call
+	SpanTypeRequestOutbound
+)
+
 // Span is used to record an entry
 type Span struct {
 	// Id of the trace
@@ -33,6 +44,8 @@ type Span struct {
 	Duration time.Duration
 	// associated data
 	Metadata map[string]string
+	// Type
+	Type SpanType
 }
 
 const (

util/wrapper/wrapper.go

@@ -63,6 +63,7 @@ func (c *clientWrapper) Publish(ctx context.Context, p client.Message, opts ...c
 func (c *traceWrapper) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
 	newCtx, s := c.trace.Start(ctx, req.Service()+"."+req.Endpoint())
 
+	s.Type = trace.SpanTypeRequestOutbound
 	err := c.Client.Call(newCtx, req, rsp, opts...)
 	if err != nil {
 		s.Metadata["error"] = err.Error()
@@ -122,6 +123,7 @@ func TraceHandler(t trace.Tracer) server.HandlerWrapper {
 
 			// get the span
 			newCtx, s := t.Start(ctx, req.Service()+"."+req.Endpoint())
+			s.Type = trace.SpanTypeRequestInbound
 
 			err := h(newCtx, req, rsp)
 			if err != nil {