content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.akkaactor;
  
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import akka.dispatch.Envelope;
  import io.opentelemetry.context.Context;
  import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
  import io.opentelemetry.javaagent.bootstrap.executors.ExecutorAdviceHelper;
  import io.opentelemetry.javaagent.bootstrap.executors.PropagatedContext;
  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 AkkaDispatcherInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("akka.dispatch.Dispatcher");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("dispatch")
              .and(takesArgument(0, named("akka.actor.ActorCell")))
              .and(takesArgument(1, named("akka.dispatch.Envelope"))),
          AkkaDispatcherInstrumentation.class.getName() + "$DispatchEnvelopeAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class DispatchEnvelopeAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static PropagatedContext enterDispatch(@Advice.Argument(1) Envelope envelope) {
        Context context = Java8BytecodeBridge.currentContext();
        if (ExecutorAdviceHelper.shouldPropagateContext(context, envelope.message())) {
          return ExecutorAdviceHelper.attachContextToTask(
              context, VirtualFields.ENVELOPE_PROPAGATED_CONTEXT, envelope);
        }
        return null;
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
      public static void exitDispatch(
          @Advice.Argument(1) Envelope envelope,
          @Advice.Enter PropagatedContext propagatedContext,
          @Advice.Thrown Throwable throwable) {
        ExecutorAdviceHelper.cleanUpAfterSubmit(
            propagatedContext, throwable, VirtualFields.ENVELOPE_PROPAGATED_CONTEXT, envelope);
      }
    }
  }
  