content: /*
   * Copyright 1999-2022 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.config.server.monitor.collector;
  
  import com.alibaba.nacos.config.server.monitor.MetricsMonitor;
  import com.alibaba.nacos.config.server.remote.ConfigChangeListenContext;
  import com.alibaba.nacos.config.server.service.LongPollingService;
  import com.alibaba.nacos.config.server.utils.ConfigExecutor;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  
  import java.util.concurrent.TimeUnit;
  
  /**
   * v1 and v2 config subscriber metrics collector.
   *
   * @author <a href="mailto:liuyixiao0821@gmail.com">liuyixiao</a>
   */
  @Service
  public class ConfigSubscriberMetricsCollector {
      
      private static final long DELAY_SECONDS = 5;
      
      @Autowired
      public ConfigSubscriberMetricsCollector(LongPollingService longPollingService, ConfigChangeListenContext configChangeListenContext) {
          ConfigExecutor.scheduleConfigTask(() -> {
              MetricsMonitor.getConfigSubscriberMonitor("v1").set(longPollingService.getSubscriberCount());
              MetricsMonitor.getConfigSubscriberMonitor("v2").set(configChangeListenContext.getConnectionCount());
          }, DELAY_SECONDS, DELAY_SECONDS, TimeUnit.SECONDS);
      }
  }
  