otel: update spans transform helper to use new API

Signed-off-by: Ilya Dmitrichenko <errordeveloper@gmail.com>

util/tracing/transform/span.go

@@ -5,7 +5,6 @@ import (
 
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
-	"go.opentelemetry.io/otel/sdk/instrumentation"
 	"go.opentelemetry.io/otel/sdk/resource"
 	tracesdk "go.opentelemetry.io/otel/sdk/trace"
 	"go.opentelemetry.io/otel/trace"
@@ -18,30 +17,30 @@ const (
 	maxMessageEventsPerSpan = 128
 )
 
-// Spans transforms slice of OTLP ResourceSpan into a slice of SpanSnapshots.
-func Spans(sdl []*tracepb.ResourceSpans) []tracesdk.ReadOnlySpan {
-	if len(sdl) == 0 {
+// Spans transforms slice of OTLP ResourceSpan into a slice of ReadOnlySpans.
+func Spans(resourceSpans []*tracepb.ResourceSpans) []tracesdk.ReadOnlySpan {
+	if len(resourceSpans) == 0 {
 		return nil
 	}
 
 	var out []tracesdk.ReadOnlySpan
 
-	for _, sd := range sdl {
-		if sd == nil {
+	for _, resourceSpan := range resourceSpans {
+		if resourceSpan == nil {
 			continue
 		}
 
-		for _, sdi := range sd.InstrumentationLibrarySpans {
-			sda := make([]tracesdk.ReadOnlySpan, len(sdi.Spans))
-			for i, s := range sdi.Spans {
-				sda[i] = &readOnlySpan{
+		for _, scopeSpan := range resourceSpan.ScopeSpans {
+			spans := make([]tracesdk.ReadOnlySpan, len(scopeSpan.Spans))
+			for i, s := range scopeSpan.Spans {
+				spans[i] = &readOnlySpan{
 					pb:        s,
-					il:        sdi.InstrumentationLibrary,
-					resource:  sd.Resource,
-					schemaURL: sd.SchemaUrl,
+					scope:     scopeSpan.Scope,
+					resource:  resourceSpan.Resource,
+					schemaURL: resourceSpan.SchemaUrl,
 				}
 			}
-			out = append(out, sda...)
+			out = append(out, spans...)
 		}
 	}
 
@@ -53,7 +52,7 @@ type readOnlySpan struct {
 	tracesdk.ReadOnlySpan
 
 	pb        *tracepb.Span
-	il        *v11.InstrumentationLibrary
+	scope     *v11.InstrumentationScope
 	resource  *v1.Resource
 	schemaURL string
 }
@@ -122,10 +121,6 @@ func (s *readOnlySpan) Status() tracesdk.Status {
 	}
 }
 
-func (s *readOnlySpan) InstrumentationLibrary() instrumentation.Library {
-	return instrumentationLibrary(s.il)
-}
-
 // Resource returns information about the entity that produced the span.
 func (s *readOnlySpan) Resource() *resource.Resource {
 	if s.resource == nil {