content: /*
   * Copyright 1999-2023 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.client.lock;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.lock.LockService;
  import com.alibaba.nacos.api.lock.model.LockInstance;
  import com.alibaba.nacos.client.address.AbstractServerListManager;
  import com.alibaba.nacos.client.env.NacosClientProperties;
  import com.alibaba.nacos.client.lock.remote.grpc.LockGrpcClient;
  import com.alibaba.nacos.client.naming.core.NamingServerListManager;
  import com.alibaba.nacos.client.naming.remote.http.NamingHttpClientManager;
  import com.alibaba.nacos.client.security.SecurityProxy;
  
  import java.util.Properties;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.ScheduledThreadPoolExecutor;
  import java.util.concurrent.TimeUnit;
  
  import static com.alibaba.nacos.client.constant.Constants.Security.SECURITY_INFO_REFRESH_INTERVAL_MILLS;
  
  /**
   * nacos lock Service.
   *
   * @author 985492783@qq.com
   * @date 2023/8/24 19:51
   */
  @SuppressWarnings("PMD.ServiceOrDaoClassShouldEndWithImplRule")
  public class NacosLockService implements LockService {
      
      private final LockGrpcClient lockGrpcClient;
      
      private final SecurityProxy securityProxy;
      
      private ScheduledExecutorService executorService;
      
      public NacosLockService(Properties properties) throws NacosException {
          NacosClientProperties nacosClientProperties = NacosClientProperties.PROTOTYPE.derive(properties);
          AbstractServerListManager serverListManager = new NamingServerListManager(properties);
          serverListManager.start();
          this.securityProxy = new SecurityProxy(serverListManager,
                  NamingHttpClientManager.getInstance().getNacosRestTemplate());
          initSecurityProxy(nacosClientProperties);
          this.lockGrpcClient = new LockGrpcClient(nacosClientProperties, serverListManager, securityProxy);
      }
      
      private void initSecurityProxy(NacosClientProperties properties) {
          this.executorService = new ScheduledThreadPoolExecutor(1, r -> {
              Thread t = new Thread(r);
              t.setName("com.alibaba.nacos.client.lock.security");
              t.setDaemon(true);
              return t;
          });
          final Properties nacosClientPropertiesView = properties.asProperties();
          this.securityProxy.login(nacosClientPropertiesView);
          this.executorService.scheduleWithFixedDelay(() -> securityProxy.login(nacosClientPropertiesView), 0,
                  SECURITY_INFO_REFRESH_INTERVAL_MILLS, TimeUnit.MILLISECONDS);
      }
      
      @Override
      public Boolean lock(LockInstance instance) throws NacosException {
          return instance.lock(this);
      }
      
      @Override
      public Boolean unLock(LockInstance instance) throws NacosException {
          return instance.unLock(this);
      }
      
      @Override
      public Boolean remoteTryLock(LockInstance instance) throws NacosException {
          return lockGrpcClient.lock(instance);
      }
      
      @Override
      public Boolean remoteReleaseLock(LockInstance instance) throws NacosException {
          return lockGrpcClient.unLock(instance);
      }
      
      @Override
      public void shutdown() throws NacosException {
          lockGrpcClient.shutdown();
          if (null != executorService) {
              executorService.shutdown();
          }
      }
  }
  