.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
     - name: setup
       uses: actions/setup-go@v3
       with:
-        go-version: 1.21
+        go-version: 1.17
     - name: checkout
       uses: actions/checkout@v3
     - name: cache

.github/workflows/pr.yml

@@ -12,7 +12,7 @@ jobs:
     - name: setup
       uses: actions/setup-go@v3
       with:
-        go-version: 1.20
+        go-version: 1.17
     - name: checkout
       uses: actions/checkout@v3
     - name: cache

opentracing.go

@@ -10,7 +10,6 @@ import (
 	"go.unistack.org/micro/v4/metadata"
 	"go.unistack.org/micro/v4/options"
 	"go.unistack.org/micro/v4/tracer"
-	rutil "go.unistack.org/micro/v4/util/reflect"
 )
 
 var _ tracer.Tracer = &otTracer{}
@@ -30,9 +29,7 @@ func (t *otTracer) Flush(ctx context.Context) error {
 
 func (t *otTracer) Init(opts ...options.Option) error {
 	for _, o := range opts {
-		if err := o(&t.opts); err != nil {
+		o(&t.opts)
-			return err
-		}
 	}
 
 	if tr, ok := t.opts.Context.Value(tracerKey{}).(ot.Tracer); ok {
@@ -44,11 +41,6 @@ func (t *otTracer) Init(opts ...options.Option) error {
 	return nil
 }
 
-type spanContext interface {
-	TraceID() idStringer
-	SpanID() idStringer
-}
-
 func (t *otTracer) Start(ctx context.Context, name string, opts ...options.Option) (context.Context, tracer.Span) {
 	options := tracer.NewSpanOptions(opts...)
 	var span ot.Span
@@ -62,48 +54,34 @@ func (t *otTracer) Start(ctx context.Context, name string, opts ...options.Optio
 	case tracer.SpanKindServer, tracer.SpanKindConsumer:
 		ctx, span = t.startSpanFromIncomingContext(ctx, name)
 	}
-
 	sp := &otSpan{span: span, opts: options}
-
-	spctx := span.Context()
-	if v, ok := spctx.(spanContext); ok {
-		sp.traceID = v.TraceID().String()
-		sp.spanID = v.SpanID().String()
-	} else {
-		if val, err := rutil.StructFieldByName(spctx, "TraceID"); err == nil {
-			sp.traceID = fmt.Sprintf("%v", val)
-		}
-		if val, err := rutil.StructFieldByName(spctx, "SpanID"); err == nil {
-			sp.spanID = fmt.Sprintf("%v", val)
-		}
-	}
-
 	return tracer.NewSpanContext(ctx, sp), sp
 }
 
-type idStringer struct {
-	s string
-}
-
-func (s idStringer) String() string {
-	return s.s
-}
-
 type otSpan struct {
 	span      ot.Span
-	spanID    string
-	traceID   string
 	opts      tracer.SpanOptions
 	status    tracer.SpanStatus
 	statusMsg string
 }
 
+type spanContext interface {
+	TraceID() fmt.Stringer
+	SpanID() fmt.Stringer
+}
+
 func (os *otSpan) TraceID() string {
-	return os.traceID
+	if spanctx, ok := os.span.Context().(spanContext); ok {
+		return spanctx.TraceID().String()
+	}
+	return ""
 }
 
 func (os *otSpan) SpanID() string {
-	return os.spanID
+	if spanctx, ok := os.span.Context().(spanContext); ok {
+		return spanctx.SpanID().String()
+	}
+	return ""
 }
 
 func (os *otSpan) SetStatus(st tracer.SpanStatus, msg string) {
@@ -129,28 +107,20 @@ func (os *otSpan) Finish(opts ...options.Option) {
 	}
 	os.opts.Labels = tracer.UniqLabels(os.opts.Labels)
 	for idx := 0; idx < len(os.opts.Labels); idx += 2 {
-		k, ok := os.opts.Labels[idx].(string)
+		switch os.opts.Labels[idx] {
-		if !ok {
-			continue
-		}
-		v, ok := os.opts.Labels[idx+1].(string)
-		if !ok {
-			v = fmt.Sprintf("%v", os.opts.Labels[idx+1])
-		}
-		switch k {
 		case "err":
 			os.status = tracer.SpanStatusError
-			os.statusMsg = v
+			os.statusMsg = fmt.Sprintf("%v", os.opts.Labels[idx+1])
 		case "error":
 			continue
 		case "X-Request-Id", "x-request-id":
-			os.span.SetTag("x-request-id", v)
+			os.span.SetTag("x-request-id", os.opts.Labels[idx+1])
 		case "rpc.call", "rpc.call_type", "rpc.flavor", "rpc.service", "rpc.method",
 			"sdk.database", "db.statement", "db.args", "db.query", "db.method",
 			"messaging.destination.name", "messaging.source.name", "messaging.operation":
-			os.span.SetTag(k, v)
+			os.span.SetTag(fmt.Sprintf("%v", os.opts.Labels[idx]), os.opts.Labels[idx+1])
 		default:
-			os.span.LogKV(k, v)
+			os.span.LogKV(os.opts.Labels[idx], os.opts.Labels[idx+1])
 		}
 	}
 	if os.status == tracer.SpanStatusError {
@@ -190,6 +160,10 @@ func NewTracer(opts ...options.Option) *otTracer {
 	return &otTracer{opts: options}
 }
 
+func spanFromContext(ctx context.Context) ot.Span {
+	return ot.SpanFromContext(ctx)
+}
+
 func (t *otTracer) startSpanFromAny(ctx context.Context, name string, opts ...ot.StartSpanOption) (context.Context, ot.Span) {
 	if tracerSpan, ok := tracer.SpanFromContext(ctx); ok && tracerSpan != nil {
 		return t.startSpanFromContext(ctx, name, opts...)

opentracing_test.go

@@ -1,32 +0,0 @@
-package opentracing
-
-import (
-	"context"
-	"testing"
-
-	"github.com/opentracing/opentracing-go/mocktracer"
-	"go.unistack.org/micro/v4/metadata"
-	"go.unistack.org/micro/v4/tracer"
-)
-
-func TestTraceID(t *testing.T) {
-	md := metadata.New(1)
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	ctx = metadata.NewIncomingContext(ctx, md)
-
-	tr := NewTracer(Tracer(mocktracer.New()))
-	if err := tr.Init(); err != nil {
-		t.Fatal(err)
-	}
-
-	var sp tracer.Span
-
-	ctx, sp = tr.Start(ctx, "test")
-	if v := sp.TraceID(); v != "43" {
-		t.Fatalf("invalid span trace id %#+v", v)
-	}
-	if v := sp.SpanID(); v != "44" {
-		t.Fatalf("invalid span span id %#+v", v)
-	}
-}