content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.vertx;
  
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.hasClassesNamed;
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.implementsInterface;
  import static net.bytebuddy.matcher.ElementMatchers.isMethod;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.vertx.core.Handler;
  import io.vertx.ext.web.RoutingContext;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  public class RouteInstrumentation implements TypeInstrumentation {
    @Override
    public ElementMatcher<ClassLoader> classLoaderOptimization() {
      return hasClassesNamed("io.vertx.ext.web.Route");
    }
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return implementsInterface(named("io.vertx.ext.web.Route"));
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          isMethod().and(named("handler")).and(takesArgument(0, named("io.vertx.core.Handler"))),
          this.getClass().getName() + "$HandlerAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class HandlerAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void wrapHandler(
          @Advice.Argument(value = 0, readOnly = false) Handler<RoutingContext> handler) {
        handler = new RoutingContextHandlerWrapper(handler);
      }
    }
  }
  