content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.netty.v3_8;
  
  import static net.bytebuddy.matcher.ElementMatchers.isMethod;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
  import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  public class DefaultChannelPipelineInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("org.jboss.netty.channel.DefaultChannelPipeline");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          isMethod()
              .and(named("notifyHandlerException"))
              .and(takesArgument(1, named(Throwable.class.getName()))),
          DefaultChannelPipelineInstrumentation.class.getName() + "$NotifyHandlerExceptionAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class NotifyHandlerExceptionAdvice {
  
      @Advice.OnMethodEnter
      public static void onEnter(@Advice.Argument(1) Throwable throwable) {
        if (throwable != null) {
          NettyErrorHolder.set(Java8BytecodeBridge.currentContext(), throwable);
        }
      }
    }
  }
  