Fix http pipelining test on Netty 4.1 (#8412)

instrumentation/finatra-2.9/javaagent/src/latestDepTest/scala/io/opentelemetry/javaagent/instrumentation/finatra/FinatraServerLatestTest.scala

@@ -55,7 +55,6 @@ class FinatraServerLatestTest extends AbstractHttpServerTest[HttpServer] {
       override def test(endpoint: ServerEndpoint): Boolean =
         endpoint != ServerEndpoint.NOT_FOUND
     })
-    options.setTestHttpPipelining(false)
   }
 
   override protected def assertHandlerSpan(

instrumentation/finatra-2.9/javaagent/src/test/scala/io/opentelemetry/javaagent/instrumentation/finatra/FinatraServerTest.scala

@@ -56,7 +56,6 @@ class FinatraServerTest extends AbstractHttpServerTest[HttpServer] {
       override def test(endpoint: ServerEndpoint): Boolean =
         endpoint != ServerEndpoint.NOT_FOUND
     })
-    options.setTestHttpPipelining(false)
   }
 
   override protected def assertHandlerSpan(

instrumentation/netty/netty-4.1/library/src/main/java/io/opentelemetry/instrumentation/netty/v4_1/internal/server/HttpServerResponseTracingHandler.java

@@ -7,7 +7,6 @@ package io.opentelemetry.instrumentation.netty.v4_1.internal.server;
 
 import static io.opentelemetry.instrumentation.netty.v4_1.internal.server.HttpServerRequestTracingHandler.HTTP_SERVER_REQUEST;
 
-import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelOutboundHandlerAdapter;
@@ -69,18 +68,18 @@ public class HttpServerResponseTracingHandler extends ChannelOutboundHandlerAdap
       if (msg instanceof FullHttpResponse) {
         // Headers and body all sent together, we have the response information in the msg.
         beforeCommitHandler.handle(context, (HttpResponse) msg);
+        contextAttr.set(null);
+        HttpRequestAndChannel request = ctx.channel().attr(HTTP_SERVER_REQUEST).getAndSet(null);
         writePromise.addListener(
-            future -> end(ctx.channel(), (FullHttpResponse) msg, writePromise));
+            future -> end(context, request, (FullHttpResponse) msg, writePromise));
       } else {
         // Body sent after headers. We stored the response information in the context when
         // encountering HttpResponse (which was not FullHttpResponse since it's not
         // LastHttpContent).
-        writePromise.addListener(
-            future ->
-                end(
-                    ctx.channel(),
-                    ctx.channel().attr(HTTP_SERVER_RESPONSE).getAndSet(null),
-                    writePromise));
+        contextAttr.set(null);
+        HttpRequestAndChannel request = ctx.channel().attr(HTTP_SERVER_REQUEST).getAndSet(null);
+        HttpResponse response = ctx.channel().attr(HTTP_SERVER_RESPONSE).getAndSet(null);
+        writePromise.addListener(future -> end(context, request, response, writePromise));
       }
     } else {
       writePromise = prm;
@@ -94,20 +93,24 @@ public class HttpServerResponseTracingHandler extends ChannelOutboundHandlerAdap
     try (Scope ignored = context.makeCurrent()) {
       super.write(ctx, msg, writePromise);
     } catch (Throwable throwable) {
-      end(ctx.channel(), null, throwable);
+      contextAttr.set(null);
+      HttpRequestAndChannel request = ctx.channel().attr(HTTP_SERVER_REQUEST).getAndSet(null);
+      end(context, request, null, throwable);
       throw throwable;
     }
   }
 
-  private void end(Channel channel, HttpResponse response, ChannelFuture future) {
+  private void end(
+      Context context, HttpRequestAndChannel request, HttpResponse response, ChannelFuture future) {
     Throwable error = future.isSuccess() ? null : future.cause();
-    end(channel, response, error);
+    end(context, request, response, error);
   }
 
-  // make sure to remove the server context on end() call
-  private void end(Channel channel, @Nullable HttpResponse response, @Nullable Throwable error) {
-    Context context = channel.attr(AttributeKeys.SERVER_CONTEXT).getAndSet(null);
-    HttpRequestAndChannel request = channel.attr(HTTP_SERVER_REQUEST).getAndSet(null);
+  private void end(
+      Context context,
+      HttpRequestAndChannel request,
+      @Nullable HttpResponse response,
+      @Nullable Throwable error) {
     error = NettyErrorHolder.getOrDefault(context, error);
     instrumenter.end(context, request, response, error);
   }

instrumentation/netty/netty-4.1/testing/src/main/java/io/opentelemetry/instrumentation/netty/v4_1/AbstractNetty41ServerTest.java

@@ -62,7 +62,6 @@ public abstract class AbstractNetty41ServerTest extends AbstractHttpServerTest<E
         unused ->
             Sets.difference(
                 DEFAULT_HTTP_ATTRIBUTES, Collections.singleton(SemanticAttributes.HTTP_ROUTE)));
-    options.setTestHttpPipelining(false);
   }
 
   @Override

instrumentation/vertx/vertx-rx-java-3.5/javaagent/src/latestDepTest/groovy/server/VertxRxHttpServerTest.groovy

@@ -68,11 +68,6 @@ class VertxRxHttpServerTest extends HttpServerTest<Vertx> implements AgentTestTr
     return false
   }
 
-  @Override
-  boolean testHttpPipelining() {
-    false
-  }
-
   protected Class<AbstractVerticle> verticle() {
     return VertxReactiveWebServer
   }

instrumentation/vertx/vertx-rx-java-3.5/javaagent/src/version35Test/groovy/server/VertxRxHttpServerTest.groovy

@@ -62,11 +62,6 @@ class VertxRxHttpServerTest extends HttpServerTest<Vertx> implements AgentTestTr
     return true
   }
 
-  @Override
-  boolean testHttpPipelining() {
-    false
-  }
-
   @Override
   boolean verifyServerSpanEndTime() {
     // server spans are ended inside of the controller spans

instrumentation/vertx/vertx-web-3.0/javaagent/src/latestDepTest/groovy/server/VertxLatestHttpServerTest.groovy

@@ -13,9 +13,4 @@ class VertxLatestHttpServerTest extends AbstractVertxHttpServerTest {
   protected Class<? extends AbstractVerticle> verticle() {
     return VertxLatestWebServer
   }
-
-  @Override
-  boolean testHttpPipelining() {
-    false
-  }
 }