content: /*
   * Copyright 1999-2018 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.csp.sentinel.dashboard.discovery;
  
  import java.util.ArrayList;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ConcurrentMap;
  
  import com.alibaba.csp.sentinel.util.AssertUtil;
  
  import org.springframework.stereotype.Component;
  
  /**
   * @author leyou
   */
  @Component
  public class SimpleMachineDiscovery implements MachineDiscovery {
  
      private final ConcurrentMap<String, AppInfo> apps = new ConcurrentHashMap<>();
  
      @Override
      public long addMachine(MachineInfo machineInfo) {
          AssertUtil.notNull(machineInfo, "machineInfo cannot be null");
          AppInfo appInfo = apps.computeIfAbsent(machineInfo.getApp(), o -> new AppInfo(machineInfo.getApp(), machineInfo.getAppType()));
          appInfo.addMachine(machineInfo);
          return 1;
      }
  
      @Override
      public boolean removeMachine(String app, String ip, int port) {
          AssertUtil.assertNotBlank(app, "app name cannot be blank");
          AppInfo appInfo = apps.get(app);
          if (appInfo != null) {
              return appInfo.removeMachine(ip, port);
          }
          return false;
      }
  
      @Override
      public List<String> getAppNames() {
          return new ArrayList<>(apps.keySet());
      }
  
      @Override
      public AppInfo getDetailApp(String app) {
          AssertUtil.assertNotBlank(app, "app name cannot be blank");
          return apps.get(app);
      }
  
      @Override
      public Set<AppInfo> getBriefApps() {
          return new HashSet<>(apps.values());
      }
  
      @Override
      public void removeApp(String app) {
          AssertUtil.assertNotBlank(app, "app name cannot be blank");
          apps.remove(app);
      }
  
  }
  