add http.response.status_code

Author: laurit

instrumentation/aws-lambda/aws-lambda-events-2.2/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/awslambdaevents/v2_2/AwsLambdaRequestHandlerInstrumentation.java

@@ -94,6 +94,7 @@ public static void onEnter(
     @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
     public static void stopSpan(
         @Advice.Argument(value = 0, typing = Typing.DYNAMIC) Object arg,
+        @Advice.Return Object result,
         @Advice.Thrown Throwable throwable,
         @Advice.Local("otelInput") AwsLambdaRequest input,
         @Advice.Local("otelFunctionContext") io.opentelemetry.context.Context functionContext,
@@ -110,7 +111,7 @@ public static void stopSpan(
       if (functionScope != null) {
         functionScope.close();
         AwsLambdaInstrumentationHelper.functionInstrumenter()
-            .end(functionContext, input, null, throwable);
+            .end(functionContext, input, result, throwable);
       }
 
       OpenTelemetrySdkAccess.forceFlush(1, TimeUnit.SECONDS);

instrumentation/aws-lambda/aws-lambda-events-2.2/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/awslambdaevents/v2_2/AwsLambdaApiGatewayHandlerTest.java

@@ -86,7 +86,8 @@ void tracedWithHttpPropagation() {
                             equalTo(FaasIncubatingAttributes.FAAS_TRIGGER, "http"),
                             equalTo(HttpAttributes.HTTP_REQUEST_METHOD, "PUT"),
                             equalTo(UserAgentAttributes.USER_AGENT_ORIGINAL, "Clever Client"),
-                            equalTo(UrlAttributes.URL_FULL, "http://localhost:2024/hello/world"))));
+                            equalTo(UrlAttributes.URL_FULL, "http://localhost:2024/hello/world"),
+                            equalTo(HttpAttributes.HTTP_RESPONSE_STATUS_CODE, 201L))));
   }
 
   public static class TestRequestHandlerApiGateway