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.nacos.config.server.monitor;
  
  import com.alibaba.nacos.core.monitor.NacosMeterRegistryCenter;
  import com.alibaba.nacos.core.monitor.topn.StringTopNCounter;
  import io.micrometer.core.instrument.Counter;
  import io.micrometer.core.instrument.ImmutableTag;
  import io.micrometer.core.instrument.Tag;
  import io.micrometer.core.instrument.Timer;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.atomic.AtomicInteger;
  
  /**
   * Metrics Monitor.
   *
   * @author Nacos
   */
  public class MetricsMonitor {
      
      private static final String METER_REGISTRY = NacosMeterRegistryCenter.CONFIG_STABLE_REGISTRY;
      
      private static AtomicInteger getConfig = new AtomicInteger();
      
      private static AtomicInteger publish = new AtomicInteger();
      
      /**
       * task for notify config change to sub client of http long polling.
       */
      private static AtomicInteger longPolling = new AtomicInteger();
      
      private static AtomicInteger configCount = new AtomicInteger();
      
      /**
       * task for notify config change to cluster server.
       */
      private static AtomicInteger notifyTask = new AtomicInteger();
      
      /**
       * task for notify config change to sub client of long connection.
       */
      private static AtomicInteger notifyClientTask = new AtomicInteger();
      
      private static AtomicInteger dumpTask = new AtomicInteger();
      
      /**
       * config fuzzy search count.
       */
      private static AtomicInteger fuzzySearch = new AtomicInteger();
      
      /**
       * version -> client config subscriber count.
       */
      private static ConcurrentHashMap<String, AtomicInteger> configSubscriber = new ConcurrentHashMap<>();
      
      /**
       * config change count.
       */
      private static StringTopNCounter configChangeCount = new StringTopNCounter();
      
      static {
          ImmutableTag immutableTag = new ImmutableTag("module", "config");
          
          List<Tag> tags = new ArrayList<>();
          tags.add(immutableTag);
          tags.add(new ImmutableTag("name", "getConfig"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_monitor", tags, getConfig);
          
          tags = new ArrayList<>();
          tags.add(immutableTag);
          tags.add(new ImmutableTag("name", "publish"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_monitor", tags, publish);
          
          tags = new ArrayList<>();
          tags.add(immutableTag);
          tags.add(new ImmutableTag("name", "longPolling"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_monitor", tags, longPolling);
          
          tags = new ArrayList<>();
          tags.add(immutableTag);
          tags.add(new ImmutableTag("name", "configCount"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_monitor", tags, configCount);
          
          tags = new ArrayList<>();
          tags.add(immutableTag);
          tags.add(new ImmutableTag("name", "notifyTask"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_monitor", tags, notifyTask);
          
          tags = new ArrayList<>();
          tags.add(immutableTag);
          tags.add(new ImmutableTag("name", "notifyClientTask"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_monitor", tags, notifyClientTask);
          
          tags = new ArrayList<>();
          tags.add(immutableTag);
          tags.add(new ImmutableTag("name", "dumpTask"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_monitor", tags, dumpTask);
          
          tags = new ArrayList<>();
          tags.add(immutableTag);
          tags.add(new ImmutableTag("name", "fuzzySearch"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_monitor", tags, fuzzySearch);
          
          configSubscriber.put("v1", new AtomicInteger(0));
          configSubscriber.put("v2", new AtomicInteger(0));
          
          tags = new ArrayList<>();
          tags.add(new ImmutableTag("version", "v1"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_config_subscriber", tags, configSubscriber.get("v1"));
          
          tags = new ArrayList<>();
          tags.add(new ImmutableTag("version", "v2"));
          NacosMeterRegistryCenter.gauge(METER_REGISTRY, "nacos_config_subscriber", tags, configSubscriber.get("v2"));
      }
      
      public static AtomicInteger getConfigMonitor() {
          return getConfig;
      }
      
      public static AtomicInteger getPublishMonitor() {
          return publish;
      }
      
      public static AtomicInteger getLongPollingMonitor() {
          return longPolling;
      }
      
      public static AtomicInteger getConfigCountMonitor() {
          return configCount;
      }
      
      public static AtomicInteger getNotifyTaskMonitor() {
          return notifyTask;
      }
      
      public static AtomicInteger getNotifyClientTaskMonitor() {
          return notifyClientTask;
      }
      
      public static AtomicInteger getDumpTaskMonitor() {
          return dumpTask;
      }
      
      public static AtomicInteger getFuzzySearchMonitor() {
          return fuzzySearch;
      }
      
      public static AtomicInteger getConfigSubscriberMonitor(String version) {
          return configSubscriber.get(version);
      }
      
      public static StringTopNCounter getConfigChangeCount() {
          return configChangeCount;
      }
      
      public static Timer getReadConfigRtTimer() {
          return NacosMeterRegistryCenter
                  .timer(METER_REGISTRY, "nacos_timer", "module", "config", "name", "readConfigRt");
      }
      
      public static Timer getWriteConfigRtTimer() {
          return NacosMeterRegistryCenter
                  .timer(METER_REGISTRY, "nacos_timer", "module", "config", "name", "writeConfigRt");
      }
      
      public static Timer getNotifyRtTimer() {
          return NacosMeterRegistryCenter.timer(METER_REGISTRY, "nacos_timer", "module", "config", "name", "notifyRt");
      }
      
      public static Timer getDumpRtTimer() {
          return NacosMeterRegistryCenter.timer(METER_REGISTRY, "nacos_timer", "module", "config", "name", "dumpRt");
      }
      
      public static Counter getIllegalArgumentException() {
          return NacosMeterRegistryCenter
                  .counter(METER_REGISTRY, "nacos_exception", "module", "config", "name", "illegalArgument");
      }
      
      public static Counter getNacosException() {
          return NacosMeterRegistryCenter.counter(METER_REGISTRY, "nacos_exception", "module", "config", "name", "nacos");
      }
      
      public static Counter getConfigNotifyException() {
          return NacosMeterRegistryCenter
                  .counter(METER_REGISTRY, "nacos_exception", "module", "config", "name", "configNotify");
      }
      
      public static Counter getUnhealthException() {
          return NacosMeterRegistryCenter
                  .counter(METER_REGISTRY, "nacos_exception", "module", "config", "name", "unhealth");
      }
      
      public static void incrementConfigChangeCount(String tenant, String group, String dataId) {
          configChangeCount.increment(tenant + "@" + group + "@" + dataId);
      }
  }
  