content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.scalaexecutors;
  
  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.Context;
  import io.opentelemetry.instrumentation.api.util.VirtualField;
  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;
  import scala.concurrent.forkjoin.ForkJoinTask;
  
  public class ScalaForkJoinPoolInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("scala.concurrent.forkjoin.ForkJoinPool");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          // doSubmit is internal method prior to 2.11, and externalPush is the internal method after
          namedOneOf("doSubmit", "externalPush")
              .and(takesArgument(0, named(ScalaForkJoinTaskInstrumentation.TASK_CLASS_NAME))),
          ScalaForkJoinPoolInstrumentation.class.getName() + "$SetScalaForkJoinStateAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class SetScalaForkJoinStateAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static PropagatedContext enterJobSubmit(@Advice.Argument(0) ForkJoinTask<?> task) {
        Context context = Java8BytecodeBridge.currentContext();
        if (ExecutorAdviceHelper.shouldPropagateContext(context, task)) {
          VirtualField<ForkJoinTask<?>, PropagatedContext> virtualField =
              VirtualField.find(ForkJoinTask.class, PropagatedContext.class);
          return ExecutorAdviceHelper.attachContextToTask(context, virtualField, task);
        }
        return null;
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
      public static void exitJobSubmit(
          @Advice.Argument(0) ForkJoinTask<?> task,
          @Advice.Enter PropagatedContext propagatedContext,
          @Advice.Thrown Throwable throwable) {
        VirtualField<ForkJoinTask<?>, PropagatedContext> virtualField =
            VirtualField.find(ForkJoinTask.class, PropagatedContext.class);
        ExecutorAdviceHelper.cleanUpAfterSubmit(propagatedContext, throwable, virtualField, task);
      }
    }
  }
  