content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.ratpack;
  
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.implementsInterface;
  import static net.bytebuddy.matcher.ElementMatchers.nameStartsWith;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.namedOneOf;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  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;
  import ratpack.func.Action;
  
  public class DefaultExecStarterInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return nameStartsWith("ratpack.exec.internal.DefaultExecController$")
          .and(implementsInterface(named("ratpack.exec.ExecStarter")));
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          namedOneOf("onComplete", "onError", "onStart")
              .and(takesArgument(0, named("ratpack.func.Action"))),
          DefaultExecStarterInstrumentation.class.getName() + "$WrapActionAdvice");
      transformer.applyAdviceToMethod(
          named("start").and(takesArgument(0, named("ratpack.func.Action"))),
          DefaultExecStarterInstrumentation.class.getName() + "$StartAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class WrapActionAdvice {
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void wrapAction(@Advice.Argument(value = 0, readOnly = false) Action<?> action) {
        action = ActionWrapper.wrapIfNeeded(action);
      }
    }
  
    @SuppressWarnings("unused")
    public static class StartAdvice {
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static Scope enter(@Advice.Argument(value = 0, readOnly = false) Action<?> action) {
        action = ActionWrapper.wrapIfNeeded(action);
        return Java8BytecodeBridge.rootContext().makeCurrent();
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
      public static void exit(@Advice.Enter Scope scope) {
        if (scope != null) {
          scope.close();
        }
      }
    }
  }
  