fixup span and tags

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

go.mod

@@ -1,11 +1,10 @@
 module go.unistack.org/micro-tracer-opentracing/v3
 
-go 1.16
+go 1.20
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/opentracing/opentracing-go v1.2.0
-	github.com/stretchr/testify v1.5.1 // indirect
+	go.unistack.org/micro/v3 v3.10.25
-	go.unistack.org/micro/v3 v3.10.24
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
+
+require github.com/stretchr/testify v1.8.1 // indirect

go.sum

@@ -1,25 +1,21 @@
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/imdario/mergo v0.3.14/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=
-github.com/imdario/mergo v0.3.15/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=
 github.com/opentracing/opentracing-go v1.2.0 h1:uEJPy/1a5RIPAJ0Ov+OIO8OxWu77jEv+1B0VhjKrZUs=
 github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
-github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/silas/dag v0.0.0-20211117232152-9d50aa809f35/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-go.unistack.org/micro/v3 v3.10.19 h1:JtPacglETxHyb+GiuMdfxqGtnWSTYXPQm6PlDQfNIl8=
+github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
-go.unistack.org/micro/v3 v3.10.19/go.mod h1:XIArw29f0b3uvF4cq96X/nQt2f0J2OGnjh8J+DBbC0s=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-go.unistack.org/micro/v3 v3.10.24 h1:gIi4r0vUSpNLs+uRb4KKEXBLkE8iNp6ZnJsI5FV42j0=
+go.unistack.org/micro/v3 v3.10.25 h1:A0epdZHOqjnXx103wwFhPKgmvVVbScvfbmn3HmHz1wE=
-go.unistack.org/micro/v3 v3.10.24/go.mod h1:aywPekJP0n07xvmDgj+Si3VPmQzGMfj6tkHk/6kjXhU=
+go.unistack.org/micro/v3 v3.10.25/go.mod h1:ALkeXpqChYDjx8KPi7tz9mmIyOnob6nlNswsg8BnZjQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

opentracing.go

@@ -3,9 +3,10 @@ package opentracing
 import (
 	"context"
 	"errors"
+	"fmt"
 
-	"github.com/opentracing/opentracing-go"
+	ot "github.com/opentracing/opentracing-go"
-	"github.com/opentracing/opentracing-go/log"
+	otlog "github.com/opentracing/opentracing-go/log"
 	"go.unistack.org/micro/v3/metadata"
 	"go.unistack.org/micro/v3/tracer"
 )
@@ -14,24 +15,24 @@ var _ tracer.Tracer = &otTracer{}
 
 type otTracer struct {
 	opts   tracer.Options
-	tracer opentracing.Tracer
+	tracer ot.Tracer
 }
 
-func (ot *otTracer) Name() string {
+func (t *otTracer) Name() string {
-	return ot.opts.Name
+	return t.opts.Name
 }
 
-func (ot *otTracer) Flush(ctx context.Context) error {
+func (t *otTracer) Flush(ctx context.Context) error {
 	return nil
 }
 
-func (ot *otTracer) Init(opts ...tracer.Option) error {
+func (t *otTracer) Init(opts ...tracer.Option) error {
 	for _, o := range opts {
-		o(&ot.opts)
+		o(&t.opts)
 	}
 
-	if tr, ok := ot.opts.Context.Value(tracerKey{}).(opentracing.Tracer); ok {
+	if tr, ok := t.opts.Context.Value(tracerKey{}).(ot.Tracer); ok {
-		ot.tracer = tr
+		t.tracer = tr
 	} else {
 		return errors.New("Tracer option missing")
 	}
@@ -39,32 +40,31 @@ func (ot *otTracer) Init(opts ...tracer.Option) error {
 	return nil
 }
 
-func (ot *otTracer) Start(ctx context.Context, name string, opts ...tracer.SpanOption) (context.Context, tracer.Span) {
+func (t *otTracer) Start(ctx context.Context, name string, opts ...tracer.SpanOption) (context.Context, tracer.Span) {
 	options := tracer.NewSpanOptions(opts...)
-	var span opentracing.Span
+	var span ot.Span
 	switch options.Kind {
-	case tracer.SpanKindInternal, tracer.SpanKindUnspecified:
+	case tracer.SpanKindUnspecified:
-		ctx, span = ot.startSpanFromContext(ctx, name)
+		ctx, span = t.startSpanFromAny(ctx, name)
+	case tracer.SpanKindInternal:
+		ctx, span = t.startSpanFromContext(ctx, name)
 	case tracer.SpanKindClient, tracer.SpanKindProducer:
-		ctx, span = ot.startSpanFromOutgoingContext(ctx, name)
+		ctx, span = t.startSpanFromOutgoingContext(ctx, name)
 	case tracer.SpanKindServer, tracer.SpanKindConsumer:
-		ctx, span = ot.startSpanFromIncomingContext(ctx, ot.tracer, name)
+		ctx, span = t.startSpanFromIncomingContext(ctx, name)
 	}
-	return ctx, &otSpan{span: span, opts: options}
+	sp := &otSpan{span: span, opts: options}
+	return tracer.NewSpanContext(ctx, sp), sp
 }
 
 type otSpan struct {
-	span      opentracing.Span
+	span      ot.Span
 	opts      tracer.SpanOptions
 	status    tracer.SpanStatus
 	statusMsg string
 }
 
 func (os *otSpan) SetStatus(st tracer.SpanStatus, msg string) {
-	switch st {
-	case tracer.SpanStatusError:
-		os.span.SetTag("error", true)
-	}
 	os.status = st
 	os.statusMsg = msg
 }
@@ -78,18 +78,37 @@ func (os *otSpan) Tracer() tracer.Tracer {
 }
 
 func (os *otSpan) Finish(opts ...tracer.SpanOption) {
-	if len(os.opts.Labels) > 0 {
+	if len(os.opts.Labels)%2 != 0 {
-		os.span.LogKV(os.opts.Labels...)
+		os.opts.Labels = os.opts.Labels[:len(os.opts.Labels)-1]
+	}
+	for idx := 0; idx < len(os.opts.Labels); idx += 2 {
+		switch os.opts.Labels[idx] {
+		case "err":
+			os.status = tracer.SpanStatusError
+			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", os.opts.Labels[idx+1])
+		case "rpc.call", "rpc.call_type", "rpc.flavor", "span.kind", "sdk.database", "db.statement", "db.args", "args", "db.query", "query", "method":
+			os.span.SetTag(fmt.Sprintf("%v", os.opts.Labels[idx]), fmt.Sprintf("%v", os.opts.Labels[idx+1]))
+		default:
+			os.span.LogKV(os.opts.Labels[idx], os.opts.Labels[idx+1])
+		}
+	}
+	if os.status == tracer.SpanStatusError {
+		os.span.SetTag("error", true)
+		os.span.LogKV("error", os.statusMsg)
 	}
 	os.span.Finish()
 }
 
 func (os *otSpan) AddEvent(name string, opts ...tracer.EventOption) {
-	os.span.LogFields(log.Event(name))
+	os.span.LogFields(otlog.Event(name))
 }
 
 func (os *otSpan) Context() context.Context {
-	return opentracing.ContextWithSpan(context.Background(), os.span)
+	return ot.ContextWithSpan(context.Background(), os.span)
 }
 
 func (os *otSpan) SetName(name string) {
@@ -113,75 +132,141 @@ func NewTracer(opts ...tracer.Option) *otTracer {
 	return &otTracer{opts: options}
 }
 
-func spanFromContext(ctx context.Context) opentracing.Span {
+func spanFromContext(ctx context.Context) ot.Span {
-	return opentracing.SpanFromContext(ctx)
+	return ot.SpanFromContext(ctx)
 }
 
-func (ot *otTracer) startSpanFromContext(ctx context.Context, name string, opts ...opentracing.StartSpanOption) (context.Context, opentracing.Span) {
+func (t *otTracer) startSpanFromAny(ctx context.Context, name string, opts ...ot.StartSpanOption) (context.Context, ot.Span) {
-	if parentSpan := opentracing.SpanFromContext(ctx); parentSpan != nil {
+	if tracerSpan, ok := tracer.SpanFromContext(ctx); ok && tracerSpan != nil {
-		opts = append(opts, opentracing.ChildOf(parentSpan.Context()))
+		return t.startSpanFromContext(ctx, name, opts...)
+	}
+
+	if otSpan := ot.SpanFromContext(ctx); otSpan != nil {
+		return t.startSpanFromContext(ctx, name, opts...)
+	}
+
+	if md, ok := metadata.FromIncomingContext(ctx); ok && md != nil {
+		return t.startSpanFromIncomingContext(ctx, name, opts...)
+	}
+
+	if md, ok := metadata.FromOutgoingContext(ctx); ok && md != nil {
+		return t.startSpanFromOutgoingContext(ctx, name, opts...)
+	}
+
+	return t.startSpanFromContext(ctx, name, opts...)
+}
+
+func (t *otTracer) startSpanFromContext(ctx context.Context, name string, opts ...ot.StartSpanOption) (context.Context, ot.Span) {
+	var parentSpan ot.Span
+	if tracerSpan, ok := tracer.SpanFromContext(ctx); ok && tracerSpan != nil {
+		if sp, ok := tracerSpan.(*otSpan); ok {
+			parentSpan = sp.span
+		}
+	}
+	if parentSpan == nil {
+		if otSpan := ot.SpanFromContext(ctx); otSpan != nil {
+			parentSpan = otSpan
+		}
+	}
+
+	if parentSpan != nil {
+		opts = append(opts, ot.ChildOf(parentSpan.Context()))
 	}
 
 	md := metadata.New(1)
 
-	sp := ot.tracer.StartSpan(name, opts...)
+	sp := t.tracer.StartSpan(name, opts...)
-	if err := sp.Tracer().Inject(sp.Context(), opentracing.TextMap, opentracing.TextMapCarrier(md)); err != nil {
+	if err := sp.Tracer().Inject(sp.Context(), ot.TextMap, ot.TextMapCarrier(md)); err != nil {
 		return nil, nil
 	}
 
-	ctx = opentracing.ContextWithSpan(ctx, sp)
+	ctx = ot.ContextWithSpan(ctx, sp)
 
 	return ctx, sp
 }
 
-func (ot *otTracer) startSpanFromOutgoingContext(ctx context.Context, name string, opts ...opentracing.StartSpanOption) (context.Context, opentracing.Span) {
+func (t *otTracer) startSpanFromOutgoingContext(ctx context.Context, name string, opts ...ot.StartSpanOption) (context.Context, ot.Span) {
-	var parentCtx opentracing.SpanContext
+	var parentSpan ot.Span
+	if tracerSpan, ok := tracer.SpanFromContext(ctx); ok && tracerSpan != nil {
+		if sp, ok := tracerSpan.(*otSpan); ok {
+			parentSpan = sp.span
+		}
+	}
+	if parentSpan == nil {
+		if otSpan := ot.SpanFromContext(ctx); otSpan != nil {
+			parentSpan = otSpan
+		}
+	}
 
 	md, ok := metadata.FromOutgoingContext(ctx)
+
+	if parentSpan != nil {
+		opts = append(opts, ot.ChildOf(parentSpan.Context()))
+	} else {
+		var parentCtx ot.SpanContext
+
 		if ok && md != nil {
-		if spanCtx, err := ot.tracer.Extract(opentracing.TextMap, opentracing.TextMapCarrier(md)); err == nil && ok {
+			if spanCtx, err := t.tracer.Extract(ot.TextMap, ot.TextMapCarrier(md)); err == nil && ok {
 				parentCtx = spanCtx
 			}
 		}
 
 		if parentCtx != nil {
-		opts = append(opts, opentracing.ChildOf(parentCtx))
+			opts = append(opts, ot.ChildOf(parentCtx))
+		}
 	}
 
 	nmd := metadata.Copy(md)
 
-	sp := ot.tracer.StartSpan(name, opts...)
+	sp := t.tracer.StartSpan(name, opts...)
-	if err := sp.Tracer().Inject(sp.Context(), opentracing.TextMap, opentracing.TextMapCarrier(nmd)); err != nil {
+	if err := sp.Tracer().Inject(sp.Context(), ot.TextMap, ot.TextMapCarrier(nmd)); err != nil {
 		return nil, nil
 	}
 
-	ctx = metadata.NewOutgoingContext(opentracing.ContextWithSpan(ctx, sp), nmd)
+	ctx = metadata.NewOutgoingContext(ot.ContextWithSpan(ctx, sp), nmd)
 
 	return ctx, sp
 }
 
-func (ot *otTracer) startSpanFromIncomingContext(ctx context.Context, tracer opentracing.Tracer, name string, opts ...opentracing.StartSpanOption) (context.Context, opentracing.Span) {
+func (t *otTracer) startSpanFromIncomingContext(ctx context.Context, name string, opts ...ot.StartSpanOption) (context.Context, ot.Span) {
-	var parentCtx opentracing.SpanContext
+	var parentSpan ot.Span
+	if tracerSpan, ok := tracer.SpanFromContext(ctx); ok && tracerSpan != nil {
+		if sp, ok := tracerSpan.(*otSpan); ok {
+			parentSpan = sp.span
+		}
+	}
+	if parentSpan == nil {
+		if otSpan := ot.SpanFromContext(ctx); otSpan != nil {
+			parentSpan = otSpan
+		}
+	}
 
 	md, ok := metadata.FromIncomingContext(ctx)
+
+	if parentSpan != nil {
+		opts = append(opts, ot.ChildOf(parentSpan.Context()))
+	} else {
+		var parentCtx ot.SpanContext
+
 		if ok && md != nil {
-		if spanCtx, err := tracer.Extract(opentracing.TextMap, opentracing.TextMapCarrier(md)); err == nil {
+			if spanCtx, err := t.tracer.Extract(ot.TextMap, ot.TextMapCarrier(md)); err == nil {
 				parentCtx = spanCtx
 			}
 		}
 
 		if parentCtx != nil {
-		opts = append(opts, opentracing.ChildOf(parentCtx))
+			opts = append(opts, ot.ChildOf(parentCtx))
+		}
 	}
 
 	nmd := metadata.Copy(md)
 
-	sp := tracer.StartSpan(name, opts...)
+	sp := t.tracer.StartSpan(name, opts...)
-	if err := sp.Tracer().Inject(sp.Context(), opentracing.TextMap, opentracing.TextMapCarrier(nmd)); err != nil {
+	if err := sp.Tracer().Inject(sp.Context(), ot.TextMap, ot.TextMapCarrier(nmd)); err != nil {
 		return nil, nil
 	}
 
-	ctx = metadata.NewIncomingContext(opentracing.ContextWithSpan(ctx, sp), nmd)
+	ctx = metadata.NewIncomingContext(ot.ContextWithSpan(ctx, sp), nmd)
 
 	return ctx, sp
 }

opentracing_test.go

@@ -5,7 +5,7 @@ import (
 	"sync"
 	"testing"
 
-	opentracing "github.com/opentracing/opentracing-go"
+	"github.com/opentracing/opentracing-go"
 	"go.unistack.org/micro/v3/metadata"
 )
 
@@ -20,14 +20,16 @@ func TestStartSpanFromIncomingContext(t *testing.T) {
 	ctx = metadata.NewIncomingContext(ctx, md)
 
 	tracer := opentracing.GlobalTracer()
-	ot := &otTracer{tracer: tracer}
 
 	g.Add(8000)
 	cherr := make(chan error)
 	for i := 0; i < 8000; i++ {
 		go func() {
 			defer g.Done()
-			_, sp := ot.startSpanFromIncomingContext(ctx, tracer, "test")
+			_, sp, err := startSpanFromIncomingContext(ctx, tracer, "test")
+			if err != nil {
+				cherr <- err
+			}
 			sp.Finish()
 		}()
 	}