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.naming.push.v2.task;
  
  import com.alibaba.nacos.api.exception.runtime.NacosRuntimeException;
  import com.alibaba.nacos.common.task.NacosTask;
  import com.alibaba.nacos.common.task.NacosTaskProcessor;
  import com.alibaba.nacos.common.task.engine.NacosDelayTaskExecuteEngine;
  import com.alibaba.nacos.naming.misc.Loggers;
  import com.alibaba.nacos.naming.misc.NamingExecuteTaskDispatcher;
  import com.alibaba.nacos.naming.misc.SwitchDomain;
  import com.alibaba.nacos.naming.push.v2.executor.PushExecutor;
  import com.alibaba.nacos.naming.push.v2.executor.PushExecutorDelegate;
  import org.springframework.stereotype.Component;
  
  /**
   * Nacos naming fuzzy watch notify service change push delay task execute engine.
   *
   * @author tanyongquan
   */
  @Component
  public class FuzzyWatchPushDelayTaskEngine extends NacosDelayTaskExecuteEngine {
      
      private final PushExecutorDelegate pushExecutor;
      
      private final SwitchDomain switchDomain;
      
      public FuzzyWatchPushDelayTaskEngine(PushExecutorDelegate pushExecutor, SwitchDomain switchDomain) {
          super(FuzzyWatchPushDelayTaskEngine.class.getSimpleName(), Loggers.PUSH);
          this.pushExecutor = pushExecutor;
          this.switchDomain = switchDomain;
          setDefaultTaskProcessor(new WatchPushDelayTaskProcessor(this));
      }
      
      public PushExecutor getPushExecutor() {
          return pushExecutor;
      }
      
      @Override
      protected void processTasks() {
          if (!switchDomain.isPushEnabled()) {
              return;
          }
          super.processTasks();
      }
      
      private static class WatchPushDelayTaskProcessor implements NacosTaskProcessor {
          
          private final FuzzyWatchPushDelayTaskEngine fuzzyWatchPushExecuteEngine;
          
          public WatchPushDelayTaskProcessor(FuzzyWatchPushDelayTaskEngine fuzzyWatchPushExecuteEngine) {
              this.fuzzyWatchPushExecuteEngine = fuzzyWatchPushExecuteEngine;
          }
          
          @Override
          public boolean process(NacosTask task) {
              
              if (task instanceof FuzzyWatchChangeNotifyTask) {
                  //process  fuzzy watch change notify when a service changed
                  FuzzyWatchChangeNotifyTask fuzzyWatchChangeNotifyTask = (FuzzyWatchChangeNotifyTask) task;
                  NamingExecuteTaskDispatcher.getInstance().dispatchAndExecuteTask(getTaskKey(task),
                          new FuzzyWatchChangeNotifyExecuteTask(fuzzyWatchPushExecuteEngine,
                                  fuzzyWatchChangeNotifyTask.getServiceKey(), fuzzyWatchChangeNotifyTask.getChangedType(),
                                  fuzzyWatchChangeNotifyTask.getClientId()));
              } else if (task instanceof FuzzyWatchSyncNotifyTask) {
                  //process fuzzy watch sync notify when a new client fuzzy watch a pattern
                  FuzzyWatchSyncNotifyTask fuzzyWatchSyncNotifyTask = (FuzzyWatchSyncNotifyTask) task;
                  String pattern = fuzzyWatchSyncNotifyTask.getPattern();
                  String clientId = fuzzyWatchSyncNotifyTask.getClientId();
                  NamingExecuteTaskDispatcher.getInstance().dispatchAndExecuteTask(getTaskKey(task),
                          new FuzzyWatchSyncNotifyExecuteTask(clientId, pattern, fuzzyWatchPushExecuteEngine,
                                  fuzzyWatchSyncNotifyTask));
              }
              return true;
          }
          
      }
      
      public static String getTaskKey(NacosTask task) {
          if (task instanceof FuzzyWatchChangeNotifyTask) {
              return "fwcnT-" + ((FuzzyWatchChangeNotifyTask) task).getClientId()
                      + ((FuzzyWatchChangeNotifyTask) task).getServiceKey();
          } else if (task instanceof FuzzyWatchSyncNotifyTask) {
              return "fwsnT-" + ((FuzzyWatchSyncNotifyTask) task).getSyncType() + "-"
                      + ((FuzzyWatchSyncNotifyTask) task).getClientId() + ((FuzzyWatchSyncNotifyTask) task).getPattern()
                      + "-" + ((FuzzyWatchSyncNotifyTask) task).getCurrentBatch();
          } else {
              throw new NacosRuntimeException(500, "unknown fuzzy task type");
          }
      }
  }
  