Allow relying on InstrumentationScope in SpanStub and fix remaining deprecation issues (#5627)

Rather than the deprecated InstrumentationLibrary

This is a replacement for
https://github.com/open-telemetry/opentelemetry-go/pull/3104, as after
this, there is no usage of `instrumentation.Library` within the SDK
anymore.

---------

Co-authored-by: Robert Pająk <pellared@hotmail.com>
Co-authored-by: Sam Xie <sam@samxie.me>

CHANGELOG.md

@@ -15,6 +15,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
   This new module contains an OTLP exporter that transmits log telemetry using gRPC.
   This module is unstable and breaking changes may be introduced.
   See our [versioning policy](VERSIONING.md) for more information about these stability guarantees. (#5629)
+- Add `InstrumentationScope` field to `SpanStub` in `go.opentelemetry.io/otel/sdk/trace/tracetest`, as a replacement for the deprecated `InstrumentationLibrary`. (#5627)
 
 ### Fixed
 

bridge/opencensus/trace_test.go

@@ -23,6 +23,6 @@ func TestNewTraceBridge(t *testing.T) {
 	gotSpans := exporter.GetSpans()
 	require.Len(t, gotSpans, 1)
 	gotSpan := gotSpans[0]
-	assert.Equal(t, gotSpan.InstrumentationLibrary.Name, scopeName)
-	assert.Equal(t, gotSpan.InstrumentationLibrary.Version, Version())
+	assert.Equal(t, gotSpan.InstrumentationScope.Name, scopeName)
+	assert.Equal(t, gotSpan.InstrumentationScope.Version, Version())
 }

exporters/otlp/otlptrace/internal/tracetransform/span_test.go

@@ -280,7 +280,7 @@ func TestSpanData(t *testing.T) {
 			attribute.Int64("rk2", 5),
 			attribute.StringSlice("rk3", []string{"sv1", "sv2"}),
 		),
-		InstrumentationLibrary: instrumentation.Scope{
+		InstrumentationScope: instrumentation.Scope{
 			Name:      "go.opentelemetry.io/test/otel",
 			Version:   "v0.0.1",
 			SchemaURL: semconv.SchemaURL,
@@ -316,8 +316,8 @@ func TestSpanData(t *testing.T) {
 	assert.Equal(t, got[0].SchemaUrl, spanData.Resource.SchemaURL())
 	scopeSpans := got[0].GetScopeSpans()
 	require.Len(t, scopeSpans, 1)
-	assert.Equal(t, scopeSpans[0].SchemaUrl, spanData.InstrumentationLibrary.SchemaURL)
-	assert.Equal(t, scopeSpans[0].GetScope(), InstrumentationScope(spanData.InstrumentationLibrary))
+	assert.Equal(t, scopeSpans[0].SchemaUrl, spanData.InstrumentationScope.SchemaURL)
+	assert.Equal(t, scopeSpans[0].GetScope(), InstrumentationScope(spanData.InstrumentationScope))
 	require.Len(t, scopeSpans[0].Spans, 1)
 	actualSpan := scopeSpans[0].Spans[0]
 

exporters/otlp/otlptrace/otlptracegrpc/internal/otlptracetest/data.go

@@ -46,7 +46,7 @@ func SingleReadOnlySpan() []tracesdk.ReadOnlySpan {
 			DroppedLinks:      0,
 			ChildSpanCount:    0,
 			Resource:          resource.NewSchemaless(attribute.String("a", "b")),
-			InstrumentationLibrary: instrumentation.Library{
+			InstrumentationScope: instrumentation.Scope{
 				Name:    "bar",
 				Version: "0.0.0",
 			},

exporters/otlp/otlptrace/otlptracehttp/internal/otlptracetest/data.go

@@ -46,7 +46,7 @@ func SingleReadOnlySpan() []tracesdk.ReadOnlySpan {
 			DroppedLinks:      0,
 			ChildSpanCount:    0,
 			Resource:          resource.NewSchemaless(attribute.String("a", "b")),
-			InstrumentationLibrary: instrumentation.Library{
+			InstrumentationScope: instrumentation.Scope{
 				Name:    "bar",
 				Version: "0.0.0",
 			},

exporters/stdout/stdouttrace/trace_test.go

@@ -186,6 +186,11 @@ func expectedJSON(now time.Time) string {
 			}
 		}
 	],
+	"InstrumentationScope": {
+		"Name": "",
+		"Version": "",
+		"SchemaURL": ""
+	},
 	"InstrumentationLibrary": {
 		"Name": "",
 		"Version": "",

exporters/zipkin/model_test.go

@@ -1015,7 +1015,7 @@ func TestTagsTransformation(t *testing.T) {
 		{
 			name: "instrLib-empty",
 			data: tracetest.SpanStub{
-				InstrumentationLibrary: instrumentation.Library{},
+				InstrumentationScope: instrumentation.Scope{},
 			},
 			want: nil,
 		},
@@ -1023,7 +1023,7 @@ func TestTagsTransformation(t *testing.T) {
 			name: "instrLib-noversion",
 			data: tracetest.SpanStub{
 				Attributes: []attribute.KeyValue{},
-				InstrumentationLibrary: instrumentation.Library{
+				InstrumentationScope: instrumentation.Scope{
 					Name: instrLibName,
 				},
 			},
@@ -1035,7 +1035,7 @@ func TestTagsTransformation(t *testing.T) {
 			name: "instrLib-with-version",
 			data: tracetest.SpanStub{
 				Attributes: []attribute.KeyValue{},
-				InstrumentationLibrary: instrumentation.Library{
+				InstrumentationScope: instrumentation.Scope{
 					Name:    instrLibName,
 					Version: instrLibVersion,
 				},

internal/shared/otlp/otlptrace/otlptracetest/data.go.tmpl

@@ -46,7 +46,7 @@ func SingleReadOnlySpan() []tracesdk.ReadOnlySpan {
 			DroppedLinks:      0,
 			ChildSpanCount:    0,
 			Resource:          resource.NewSchemaless(attribute.String("a", "b")),
-			InstrumentationLibrary: instrumentation.Library{
+			InstrumentationScope: instrumentation.Scope{
 				Name:    "bar",
 				Version: "0.0.0",
 			},

sdk/instrumentation/library.go

@@ -4,5 +4,6 @@
 package instrumentation // import "go.opentelemetry.io/otel/sdk/instrumentation"
 
 // Library represents the instrumentation library.
-// Deprecated: please use Scope instead.
+//
+// Deprecated: use [Scope] instead.
 type Library = Scope

sdk/trace/snapshot.go

@@ -99,7 +99,7 @@ func (s snapshot) InstrumentationScope() instrumentation.Scope {
 
 // InstrumentationLibrary returns information about the instrumentation
 // library that created the span.
-func (s snapshot) InstrumentationLibrary() instrumentation.Library {
+func (s snapshot) InstrumentationLibrary() instrumentation.Library { //nolint:staticcheck // This method needs to be define for backwards compatibility
 	return s.instrumentationScope
 }
 

sdk/trace/span.go

@@ -62,7 +62,7 @@ type ReadOnlySpan interface {
 	// InstrumentationLibrary returns information about the instrumentation
 	// library that created the span.
 	// Deprecated: please use InstrumentationScope instead.
-	InstrumentationLibrary() instrumentation.Library
+	InstrumentationLibrary() instrumentation.Library //nolint:staticcheck // This method needs to be define for backwards compatibility
 	// Resource returns information about the entity that produced the span.
 	Resource() *resource.Resource
 	// DroppedAttributes returns the number of attributes dropped by the span
@@ -642,7 +642,7 @@ func (s *recordingSpan) InstrumentationScope() instrumentation.Scope {
 
 // InstrumentationLibrary returns the instrumentation.Library associated with
 // the Tracer that created this span.
-func (s *recordingSpan) InstrumentationLibrary() instrumentation.Library {
+func (s *recordingSpan) InstrumentationLibrary() instrumentation.Library { //nolint:staticcheck // This method needs to be define for backwards compatibility
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	return s.tracer.instrumentationScope

sdk/trace/tracetest/span.go

@@ -45,22 +45,25 @@ func (s SpanStubs) Snapshots() []tracesdk.ReadOnlySpan {
 
 // SpanStub is a stand-in for a Span.
 type SpanStub struct {
-	Name                   string
-	SpanContext            trace.SpanContext
-	Parent                 trace.SpanContext
-	SpanKind               trace.SpanKind
-	StartTime              time.Time
-	EndTime                time.Time
-	Attributes             []attribute.KeyValue
-	Events                 []tracesdk.Event
-	Links                  []tracesdk.Link
-	Status                 tracesdk.Status
-	DroppedAttributes      int
-	DroppedEvents          int
-	DroppedLinks           int
-	ChildSpanCount         int
-	Resource               *resource.Resource
-	InstrumentationLibrary instrumentation.Library
+	Name                 string
+	SpanContext          trace.SpanContext
+	Parent               trace.SpanContext
+	SpanKind             trace.SpanKind
+	StartTime            time.Time
+	EndTime              time.Time
+	Attributes           []attribute.KeyValue
+	Events               []tracesdk.Event
+	Links                []tracesdk.Link
+	Status               tracesdk.Status
+	DroppedAttributes    int
+	DroppedEvents        int
+	DroppedLinks         int
+	ChildSpanCount       int
+	Resource             *resource.Resource
+	InstrumentationScope instrumentation.Scope
+
+	// Deprecated: use InstrumentationScope instead.
+	InstrumentationLibrary instrumentation.Library //nolint:staticcheck // This method needs to be define for backwards compatibility
 }
 
 // SpanStubFromReadOnlySpan returns a SpanStub populated from ro.
@@ -85,12 +88,18 @@ func SpanStubFromReadOnlySpan(ro tracesdk.ReadOnlySpan) SpanStub {
 		DroppedLinks:           ro.DroppedLinks(),
 		ChildSpanCount:         ro.ChildSpanCount(),
 		Resource:               ro.Resource(),
+		InstrumentationScope:   ro.InstrumentationScope(),
 		InstrumentationLibrary: ro.InstrumentationScope(),
 	}
 }
 
 // Snapshot returns a read-only copy of the SpanStub.
 func (s SpanStub) Snapshot() tracesdk.ReadOnlySpan {
+	scopeOrLibrary := s.InstrumentationScope
+	if scopeOrLibrary.Name == "" && scopeOrLibrary.Version == "" && scopeOrLibrary.SchemaURL == "" {
+		scopeOrLibrary = s.InstrumentationLibrary
+	}
+
 	return spanSnapshot{
 		name:                 s.Name,
 		spanContext:          s.SpanContext,
@@ -107,7 +116,7 @@ func (s SpanStub) Snapshot() tracesdk.ReadOnlySpan {
 		droppedLinks:         s.DroppedLinks,
 		childSpanCount:       s.ChildSpanCount,
 		resource:             s.Resource,
-		instrumentationScope: s.InstrumentationLibrary,
+		instrumentationScope: scopeOrLibrary,
 	}
 }
 
@@ -152,6 +161,6 @@ func (s spanSnapshot) InstrumentationScope() instrumentation.Scope {
 	return s.instrumentationScope
 }
 
-func (s spanSnapshot) InstrumentationLibrary() instrumentation.Library {
+func (s spanSnapshot) InstrumentationLibrary() instrumentation.Library { //nolint:staticcheck // This method needs to be define for backwards compatibility
 	return s.instrumentationScope
 }