Unexport metric name constants

CHANGELOG.md

@@ -28,6 +28,10 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Updated configuration schema to include `schema_url` for resource definition and `without_type_suffix` and `without_units` for the Prometheus exporter. (#4727)
 - Updated server metrics `go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp` to comply with OpenTelemetry semantic conventions. (#4707)
 
+### Removed 
+
+- Remove `RequestCount`, `RequestContentLength`, `ResponseContentLength`, `ServerLatency` constants from `go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp`. (#4707)
+
 ### Fixed
 
 - Fix `NewServerHandler` in `go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc` to correctly set the span status depending on the gRPC status. (#4587)

instrumentation/net/http/otelhttp/common.go

@@ -38,9 +38,9 @@ const (
 
 // Client HTTP metrics.
 const (
-	ClientRequestSize  = "http.client.request.size"  // Outgoing request bytes total
-	ClientResponseSize = "http.client.response.size" // Outgoing response bytes total
-	ClientDuration     = "http.client.duration"      // Outgoing end to end duration, milliseconds
+	clientRequestSize  = "http.client.request.size"  // Outgoing request bytes total
+	clientResponseSize = "http.client.response.size" // Outgoing response bytes total
+	clientDuration     = "http.client.duration"      // Outgoing end to end duration, milliseconds
 )
 
 // Filter is a predicate used to determine whether a given http.request should

instrumentation/net/http/otelhttp/transport.go

@@ -93,21 +93,21 @@ func (t *Transport) applyConfig(c *config) {
 func (t *Transport) createMeasures() {
 	var err error
 	t.requestBytesCounter, err = t.meter.Int64Counter(
-		ClientRequestSize,
+		clientRequestSize,
 		metric.WithUnit("By"),
 		metric.WithDescription("Measures the size of HTTP request messages."),
 	)
 	handleErr(err)
 
 	t.responseBytesCounter, err = t.meter.Int64Counter(
-		ClientResponseSize,
+		clientResponseSize,
 		metric.WithUnit("By"),
 		metric.WithDescription("Measures the size of HTTP response messages."),
 	)
 	handleErr(err)
 
 	t.latencyMeasure, err = t.meter.Float64Histogram(
-		ClientDuration,
+		clientDuration,
 		metric.WithUnit("ms"),
 		metric.WithDescription("Measures the duration of outbound HTTP requests."),
 	)