refactor(otelhttp): change Version() func to const Version string

Author: dogedede

instrumentation/net/http/otelhttp/common.go

@@ -23,5 +23,5 @@ const (
 type Filter func(*http.Request) bool
 
 func newTracer(tp trace.TracerProvider) trace.Tracer {
-	return tp.Tracer(ScopeName, trace.WithInstrumentationVersion(Version()))
+	return tp.Tracer(ScopeName, trace.WithInstrumentationVersion(Version))
 }

instrumentation/net/http/otelhttp/config.go

@@ -67,7 +67,7 @@ func newConfig(opts ...Option) *config {
 
 	c.Meter = c.MeterProvider.Meter(
 		ScopeName,
-		metric.WithInstrumentationVersion(Version()),
+		metric.WithInstrumentationVersion(Version),
 	)
 
 	return c

instrumentation/net/http/otelhttp/handler_test.go

@@ -174,15 +174,15 @@ func TestHandlerBasics(t *testing.T) {
 func assertScopeMetrics(t *testing.T, sm metricdata.ScopeMetrics, attrs attribute.Set) {
 	assert.Equal(t, instrumentation.Scope{
 		Name:    "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp",
-		Version: Version(),
+		Version: Version,
 	}, sm.Scope)
 
 	require.Len(t, sm.Metrics, 3)
 
 	want := metricdata.ScopeMetrics{
 		Scope: instrumentation.Scope{
 			Name:    ScopeName,
-			Version: Version(),
+			Version: Version,
 		},
 		Metrics: []metricdata.Metrics{
 			{

instrumentation/net/http/otelhttp/transport_test.go

@@ -860,15 +860,15 @@ func TestTransportMetrics(t *testing.T) {
 func assertClientScopeMetrics(t *testing.T, sm metricdata.ScopeMetrics, attrs attribute.Set) {
 	assert.Equal(t, instrumentation.Scope{
 		Name:    "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp",
-		Version: Version(),
+		Version: Version,
 	}, sm.Scope)
 
 	require.Len(t, sm.Metrics, 2)
 
 	want := metricdata.ScopeMetrics{
 		Scope: instrumentation.Scope{
 			Name:    ScopeName,
-			Version: Version(),
+			Version: Version,
 		},
 		Metrics: []metricdata.Metrics{
 			{

instrumentation/net/http/otelhttp/version.go

@@ -4,7 +4,6 @@
 package otelhttp // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
 
 // Version is the current release version of the otelhttp instrumentation.
-func Version() string {
-	return "0.63.0"
+const Version = "0.63.0"
 	// This string is updated by the pre_release.sh script during release
-}
+