content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.asynchttpclient.v1_9;
  
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.hasClassesNamed;
  import static io.opentelemetry.javaagent.instrumentation.asynchttpclient.v1_9.AsyncHttpClientSingletons.ASYNC_HANDLER_DATA;
  import static io.opentelemetry.javaagent.instrumentation.asynchttpclient.v1_9.AsyncHttpClientSingletons.instrumenter;
  import static net.bytebuddy.matcher.ElementMatchers.hasSuperClass;
  import static net.bytebuddy.matcher.ElementMatchers.isPublic;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import com.ning.http.client.AsyncCompletionHandler;
  import com.ning.http.client.Response;
  import io.opentelemetry.context.Scope;
  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 ResponseInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<ClassLoader> classLoaderOptimization() {
      return hasClassesNamed("com.ning.http.client.AsyncCompletionHandler");
    }
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return hasSuperClass(named("com.ning.http.client.AsyncCompletionHandler"));
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("onCompleted")
              .and(takesArgument(0, named("com.ning.http.client.Response")))
              .and(isPublic()),
          this.getClass().getName() + "$OnCompletedAdvice");
      transformer.applyAdviceToMethod(
          named("onThrowable").and(takesArgument(0, Throwable.class)).and(isPublic()),
          this.getClass().getName() + "$OnThrowableAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class OnCompletedAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static Scope onEnter(
          @Advice.This AsyncCompletionHandler<?> handler, @Advice.Argument(0) Response response) {
  
        AsyncHandlerData data = ASYNC_HANDLER_DATA.get(handler);
        if (data == null) {
          return null;
        }
        ASYNC_HANDLER_DATA.set(handler, null);
        instrumenter().end(data.getContext(), data.getRequest(), response, null);
        return data.getParentContext().makeCurrent();
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
      public static void onExit(@Advice.Enter Scope scope) {
        if (null != scope) {
          scope.close();
        }
      }
    }
  
    @SuppressWarnings("unused")
    public static class OnThrowableAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static Scope onEnter(
          @Advice.This AsyncCompletionHandler<?> handler, @Advice.Argument(0) Throwable throwable) {
  
        AsyncHandlerData data = ASYNC_HANDLER_DATA.get(handler);
        if (data == null) {
          return null;
        }
        ASYNC_HANDLER_DATA.set(handler, null);
        instrumenter().end(data.getContext(), data.getRequest(), null, throwable);
        return data.getParentContext().makeCurrent();
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
      public static void onExit(@Advice.Enter Scope scope) {
        if (null != scope) {
          scope.close();
        }
      }
    }
  }
  