content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.pulsar.v2_8;
  
  import static net.bytebuddy.matcher.ElementMatchers.isMethod;
  import static net.bytebuddy.matcher.ElementMatchers.isPublic;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
  
  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;
  import org.apache.pulsar.client.api.Message;
  
  public class MessageInstrumentation implements TypeInstrumentation {
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("org.apache.pulsar.client.impl.MessageImpl");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          isMethod().and(isPublic()).and(named("recycle")).and(takesArguments(0)),
          MessageInstrumentation.class.getName() + "$MessageRecycleAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class MessageRecycleAdvice {
  
      @Advice.OnMethodExit(suppress = Throwable.class)
      public static void after(@Advice.This Message<?> message) {
        // Clean context to prevent memory leak.
        VirtualFieldStore.inject(message, null);
      }
    }
  }
  