content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.restlet.v1_1;
  
  import static io.opentelemetry.instrumentation.api.semconv.http.HttpServerRouteSource.CONTROLLER;
  import static io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge.currentContext;
  import static io.opentelemetry.javaagent.instrumentation.restlet.v1_1.RestletSingletons.serverSpanName;
  import static net.bytebuddy.matcher.ElementMatchers.isMethod;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  
  import io.opentelemetry.instrumentation.api.semconv.http.HttpServerRoute;
  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 org.restlet.Route;
  import org.restlet.data.Request;
  
  public class RouteInstrumentation implements TypeInstrumentation {
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return named("org.restlet.Route");
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          isMethod()
              .and(named("beforeHandle"))
              .and(takesArgument(0, named("org.restlet.data.Request")))
              .and(takesArgument(1, named("org.restlet.data.Response"))),
          this.getClass().getName() + "$RouteBeforeHandleAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class RouteBeforeHandleAdvice {
  
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void getRouteInfo(@Advice.This Route route, @Advice.Argument(0) Request request) {
        String pattern = route.getTemplate().getPattern();
  
        HttpServerRoute.update(currentContext(), CONTROLLER, serverSpanName(), pattern);
      }
    }
  }
  