content: /*
   *
   * Copyright 1999-2021 Alibaba Group Holding Ltd.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   */
  
  package com.alibaba.nacos.core.control.http;
  
  import com.alibaba.nacos.core.control.TpsControl;
  import com.alibaba.nacos.core.control.TpsControlConfig;
  import com.alibaba.nacos.core.web.NacosWebBean;
  import com.alibaba.nacos.plugin.control.ControlManagerCenter;
  import org.springframework.context.ApplicationListener;
  import org.springframework.context.event.ContextRefreshedEvent;
  import org.springframework.stereotype.Service;
  import org.springframework.web.method.HandlerMethod;
  import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
  import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
  
  import java.lang.reflect.Method;
  import java.util.Map;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  /**
   * RequestHandlerRegistry.
   *
   * @author liuzunfei
   * @version $Id: RequestHandlerRegistry.java, v 0.1 2020年07月13日 8:24 PM liuzunfei Exp $
   */
  @Service
  @NacosWebBean
  public class HttpTpsPointRegistry implements ApplicationListener<ContextRefreshedEvent> {
      
      private volatile AtomicBoolean isInit = new AtomicBoolean(false);
      
      @Override
      public void onApplicationEvent(ContextRefreshedEvent event) {
          if (!isInit.compareAndSet(false, true)) {
              return;
          }
          RequestMappingHandlerMapping requestMapping = event.getApplicationContext()
                  .getBean("requestMappingHandlerMapping", RequestMappingHandlerMapping.class);
          Map<RequestMappingInfo, HandlerMethod> handlerMethods = requestMapping.getHandlerMethods();
          for (HandlerMethod handlerMethod : handlerMethods.values()) {
              Method method = handlerMethod.getMethod();
              if (method.isAnnotationPresent(TpsControl.class) && TpsControlConfig.isTpsControlEnabled()) {
                  TpsControl tpsControl = method.getAnnotation(TpsControl.class);
                  String pointName = tpsControl.pointName();
                  ControlManagerCenter.getInstance().getTpsControlManager().registerTpsPoint(pointName);
              }
          }
      }
  }
  