content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.vertx.v4_0.client;
  
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.hasClassesNamed;
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.implementsInterface;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.vertx.core.Handler;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  /** Propagate context to stream opened callback. */
  public class HttpClientConnectionInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return implementsInterface(named("io.vertx.core.http.impl.HttpClientConnection"));
    }
  
    @Override
    public ElementMatcher<ClassLoader> classLoaderOptimization() {
      return hasClassesNamed("io.vertx.core.http.impl.HttpClientConnection");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("createStream").and(takesArgument(1, named("io.vertx.core.Handler"))),
          HttpClientConnectionInstrumentation.class.getName() + "$CreateStreamAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class CreateStreamAdvice {
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void wrapHandler(
          @Advice.Argument(value = 1, readOnly = false) Handler<?> handler) {
        handler = HandlerWrapper.wrap(handler);
      }
    }
  }
  