add ability to pass span options on finish

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

go.mod

@@ -1,9 +1,11 @@
 module go.unistack.org/micro-tracer-opentracing/v3
 
-go 1.20
+go 1.21
+
+toolchain go1.22.2
 
 require (
 	github.com/opentracing/opentracing-go v1.2.0
-	go.opentelemetry.io/otel v1.24.0
-	go.unistack.org/micro/v3 v3.10.43
+	go.opentelemetry.io/otel v1.26.0
+	go.unistack.org/micro/v3 v3.10.77
 )

go.sum

@@ -1,15 +1,19 @@
 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/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 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/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
-go.opentelemetry.io/otel v1.24.0 h1:0LAOdjNmQeSTzGBzduGe/rU4tZhMwL5rWgtp9Ku5Jfo=
-go.opentelemetry.io/otel v1.24.0/go.mod h1:W7b9Ozg4nkF5tWI5zsXkaKKDjdVjpD4oAt9Qi/MArHo=
-go.unistack.org/micro/v3 v3.10.43 h1:GjUgu1lSKrhIov67jZQg6hUVUw0xZ6+ub8s6JRu6uj4=
-go.unistack.org/micro/v3 v3.10.43/go.mod h1:CSmEf5ddmft94MyKHnUSMM0W5dpmmTVbgImbgQWV5Ak=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+go.opentelemetry.io/otel v1.26.0 h1:LQwgL5s/1W7YiiRwxf03QGnWLb2HW4pLiAhaA5cZXBs=
+go.opentelemetry.io/otel v1.26.0/go.mod h1:UmLkJHUAidDval2EICqBMbnAd0/m2vmpf/dAM+fvFs4=
+go.unistack.org/micro/v3 v3.10.77 h1:nn731y84q3S8a4UgpVdC/wN9cs30ruZeH81rKw6XcUc=
+go.unistack.org/micro/v3 v3.10.77/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

opentracing.go

@@ -49,6 +49,9 @@ type spanContext interface {
 
 func (t *otTracer) Start(ctx context.Context, name string, opts ...tracer.SpanOption) (context.Context, tracer.Span) {
 	options := tracer.NewSpanOptions(opts...)
+	if len(options.Labels)%2 != 0 {
+		options.Labels = options.Labels[:len(options.Labels)-1]
+	}
 	var span ot.Span
 	switch options.Kind {
 	case tracer.SpanKindUnspecified:
@@ -76,8 +79,6 @@ func (t *otTracer) Start(ctx context.Context, name string, opts ...tracer.SpanOp
 		}
 	}
 
-	sp.AddLabels(options.Labels...)
-
 	return tracer.NewSpanContext(ctx, sp), sp
 }
 
@@ -96,6 +97,8 @@ type otSpan struct {
 	opts      tracer.SpanOptions
 	status    tracer.SpanStatus
 	statusMsg string
+	labels    []interface{}
+	finished  bool
 }
 
 func (os *otSpan) TraceID() string {
@@ -120,11 +123,28 @@ func (os *otSpan) Tracer() tracer.Tracer {
 }
 
 func (os *otSpan) Finish(opts ...tracer.SpanOption) {
+	if os.finished {
+		return
+	}
+
 	options := os.opts
+
+	options.Status = os.status
+	options.StatusMsg = os.statusMsg
+	options.Labels = append(options.Labels, os.labels...)
+
 	for _, o := range opts {
 		o(&options)
 	}
 
+	if !options.Record {
+		return
+	}
+
+	if len(options.Labels)%2 != 0 {
+		options.Labels = options.Labels[:len(options.Labels)-1]
+	}
+
 	l := len(options.Labels)
 	for idx := 0; idx < l; idx++ {
 		switch lt := options.Labels[idx].(type) {
@@ -138,12 +158,15 @@ func (os *otSpan) Finish(opts ...tracer.SpanOption) {
 		}
 	}
 
-	if os.status == tracer.SpanStatusError {
+	if options.Status == tracer.SpanStatusError {
 		os.span.SetTag("error", true)
-		os.span.LogKV("error", os.statusMsg)
+		os.span.LogKV("error", options.StatusMsg)
 	}
+
 	os.span.SetTag("span.kind", options.Kind)
 	os.span.Finish()
+
+	os.finished = true
 }
 
 func (os *otSpan) AddEvent(name string, opts ...tracer.EventOption) {
@@ -171,19 +194,7 @@ func (os *otSpan) Kind() tracer.SpanKind {
 }
 
 func (os *otSpan) AddLabels(labels ...interface{}) {
-	l := len(labels)
-
-	for idx := 0; idx < l; idx++ {
-		switch lt := labels[idx].(type) {
-		case attribute.KeyValue:
-			os.span.SetTag(string(lt.Key), lt.Value.AsInterface())
-		case string:
-			if l > idx+1 {
-				os.span.SetTag(lt, labels[idx+1])
-				idx++
-			}
-		}
-	}
+	os.labels = append(os.labels, labels...)
 }
 
 func NewTracer(opts ...tracer.Option) *otTracer {

opentracing_test.go

@@ -2,6 +2,7 @@ package opentracing
 
 import (
 	"context"
+	"fmt"
 	"testing"
 
 	"github.com/opentracing/opentracing-go/mocktracer"
@@ -46,8 +47,15 @@ func TestTraceTags(t *testing.T) {
 	var sp tracer.Span
 
 	ctx, sp = tr.Start(ctx, "test", tracer.WithSpanLabels("key", "val", "odd"))
-	sp.Finish()
-
+	sp.Finish(tracer.WithSpanLabels("xkey", "xval"))
+	_ = ctx
 	msp := mtr.FinishedSpans()[0]
-	t.Logf("mock span %#+v", msp.Tags())
+
+	if "val" != fmt.Sprintf("%v", msp.Tags()["key"]) {
+		t.Fatal("mock span invalid")
+	}
+
+	if "xval" != fmt.Sprintf("%v", msp.Tags()["xkey"]) {
+		t.Fatalf("mock span invalid %#+v", msp)
+	}
 }