refactor(instrumentation-http): Add back support for http semconv (open-telemetry#5665)

Co-authored-by: Trent Mick <[email protected]>

Author: JamieDanielson

experimental/CHANGELOG.md

@@ -8,8 +8,6 @@ For notes on migrating to 2.x / 0.200.x see [the upgrade guide](doc/upgrade-to-2
 
 ### :boom: Breaking Changes
 
-* feat(instrumentation-http)!: Remove legacy http span attributes and metrics [#5552](https://github.com/open-telemetry/opentelemetry-js/pull/5552) @svetlanabrennan
-
 ### :rocket: Features
 
 * feat(instrumentation-xml-http-request): support migration to stable HTTP semconv, v1.23.1  [#5662](https://github.com/open-telemetry/opentelemetry-js/pull/5662) @trentm
@@ -31,6 +29,9 @@ For notes on migrating to 2.x / 0.200.x see [the upgrade guide](doc/upgrade-to-2
 
 ### :house: Internal
 
+* refactor(instrumentation-http): Remove legacy http span attributes and metrics [#5552](https://github.com/open-telemetry/opentelemetry-js/pull/5552) @svetlanabrennan
+* refactor(instrumentation-http): Add back support for http semconv [#5665](https://github.com/open-telemetry/opentelemetry-js/pull/5665) @JamieDanielson
+  * Note: We initially removed support for legacy http attributes and metrics, but then added back for an additional 6 months to ensure all instrumentations could be updated and kept consistent. There should be no net new change in this instrumentation related to these semantic conventions. See [#5646](https://github.com/open-telemetry/opentelemetry-js/issues/5646) for details.
 * refactor(sdk-node): update semconv usage to `ATTR_` exports [#5668](https://github.com/open-telemetry/opentelemetry-js/pull/5668) @trentm
 * chore(sdk-node): Refactored using `get*FromEnv` utility function instead of `process.env` for NodeSDK's resource detector setup. [#5582](https://github.com/open-telemetry/opentelemetry-js/pull/5582) @beeme1mr
 * chore(sdk-node): Refactored using `get*FromEnv` utility function instead of `process.env` for NodeSDK's logging setup. [#5563](https://github.com/open-telemetry/opentelemetry-js/issues/5563) @weyert

experimental/packages/opentelemetry-instrumentation-http/README.md

@@ -0,0 +1,24 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/trace/semantic_conventions/http.md
+ */
+export enum AttributeNames {
+  HTTP_ERROR_NAME = 'http.error_name',
+  HTTP_ERROR_MESSAGE = 'http.error_message',
+  HTTP_STATUS_TEXT = 'http.status_text',
+}