content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.rxjava.v3_1_1;
  
  import static net.bytebuddy.matcher.ElementMatchers.isMethod;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  public class RxJavaPluginsInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("io.reactivex.rxjava3.plugins.RxJavaPlugins");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(isMethod(), this.getClass().getName() + "$MethodAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class MethodAdvice {
  
      // TODO: Replace with adding a type initializer to RxJavaPlugins
      // https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/2685
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void activateOncePerClassloader() {
        TracingAssemblyActivation.activate(RxJavaPlugins.class);
      }
    }
  }
  