content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.extensionkotlin;
  
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import application.io.opentelemetry.context.Context;
  import io.opentelemetry.extension.kotlin.ContextExtensionsKt;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.opentelemetry.javaagent.instrumentation.opentelemetryapi.context.AgentContextStorage;
  import kotlin.coroutines.CoroutineContext;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  public class ContextExtensionInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("application.io.opentelemetry.extension.kotlin.ContextExtensionsKt");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("asContextElement")
              .and(takesArgument(0, named("application.io.opentelemetry.context.Context"))),
          this.getClass().getName() + "$ContextAdvice");
  
      transformer.applyAdviceToMethod(
          named("asContextElement")
              .and(
                  takesArgument(
                      0, named("application.io.opentelemetry.context.ImplicitContextKeyed"))),
          this.getClass().getName() + "$ImplicitContextKeyedAdvice");
  
      transformer.applyAdviceToMethod(
          named("getOpenTelemetryContext")
              .and(takesArgument(0, named("kotlin.coroutines.CoroutineContext"))),
          this.getClass().getName() + "$GetOpenTelemetryContextAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class ContextAdvice {
  
      @Advice.OnMethodEnter(skipOn = Advice.OnNonDefaultValue.class)
      public static CoroutineContext enter(@Advice.Argument(0) Context applicationContext) {
        if (applicationContext != null) {
          io.opentelemetry.context.Context agentContext =
              AgentContextStorage.getAgentContext(applicationContext);
          return ContextExtensionsKt.asContextElement(agentContext);
        }
        return null;
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class)
      public static void onExit(
          @Advice.Return(readOnly = false) CoroutineContext result,
          @Advice.Enter CoroutineContext coroutineContext) {
        if (coroutineContext != null) {
          result = coroutineContext;
        }
      }
    }
  
    @SuppressWarnings("unused")
    public static class ImplicitContextKeyedAdvice {
  
      @Advice.OnMethodEnter(skipOn = Advice.OnNonDefaultValue.class)
      public static CoroutineContext enter(
          @Advice.Argument(0)
              application.io.opentelemetry.context.ImplicitContextKeyed implicitContextKeyed) {
        if (implicitContextKeyed != null) {
          Context applicationContext = Context.current().with(implicitContextKeyed);
          io.opentelemetry.context.Context agentContext =
              AgentContextStorage.getAgentContext(applicationContext);
          return ContextExtensionsKt.asContextElement(agentContext);
        }
        return null;
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class)
      public static void onExit(
          @Advice.Return(readOnly = false) CoroutineContext result,
          @Advice.Enter CoroutineContext coroutineContext) {
        if (coroutineContext != null) {
          result = coroutineContext;
        }
      }
    }
  
    @SuppressWarnings("unused")
    public static class GetOpenTelemetryContextAdvice {
  
      @Advice.OnMethodEnter(skipOn = Advice.OnNonDefaultValue.class)
      public static Context enter(@Advice.Argument(0) CoroutineContext coroutineContext) {
        if (coroutineContext != null) {
          io.opentelemetry.context.Context agentContext =
              ContextExtensionsKt.getOpenTelemetryContext(coroutineContext);
          return AgentContextStorage.toApplicationContext(agentContext);
        }
        return null;
      }
  
      @Advice.OnMethodExit(onThrowable = Throwable.class)
      public static void onExit(
          @Advice.Return(readOnly = false) Context result, @Advice.Enter Context context) {
        if (context != null) {
          result = context;
        }
      }
    }
  }
  