content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.playws;
  
  import static net.bytebuddy.matcher.ElementMatchers.named;
  
  import io.opentelemetry.context.Scope;
  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 AbstractBootstrapInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("play.shaded.ahc.io.netty.bootstrap.AbstractBootstrap");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("initAndRegister"),
          AbstractBootstrapInstrumentation.class.getName() + "$DisablePropagationAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class DisablePropagationAdvice {
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static Scope onEnter() {
        // Prevent context from leaking by running this method under root context.
        // Root context is not propagated by executor instrumentation.
        if (Java8BytecodeBridge.currentContext() != Java8BytecodeBridge.rootContext()) {
          return Java8BytecodeBridge.rootContext().makeCurrent();
        }
        return null;
      }
  
      @Advice.OnMethodExit(suppress = Throwable.class)
      public static void onExit(@Advice.Enter Scope scope) {
        if (scope != null) {
          scope.close();
        }
      }
    }
  }
  