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.model;
  
  import com.alibaba.nacos.config.server.utils.SimpleReadWriteLock;
  import com.alibaba.nacos.core.utils.StringPool;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  
  /**
   * Cache item.
   *
   * @author Nacos
   */
  public class CacheItem {
  
      final String groupKey;
  
      public String type;
  
      ConfigCache configCache = ConfigCacheFactoryDelegate.getInstance().createConfigCache();
  
      /**
       * Use for gray.
       */
      private volatile Map<String, ConfigCacheGray> configCacheGray = null;
  
      List<ConfigCacheGray> sortedConfigCacheGrayList = null;
  
      private final SimpleReadWriteLock rwLock = new SimpleReadWriteLock();
  
      public CacheItem(String groupKey, String encryptedDataKey) {
          this.groupKey = StringPool.get(groupKey);
          this.getConfigCache().setEncryptedDataKey(encryptedDataKey);
      }
  
      public CacheItem(String groupKey) {
          this.groupKey = StringPool.get(groupKey);
      }
  
      public ConfigCache getConfigCache() {
          return configCache;
      }
  
      public SimpleReadWriteLock getRwLock() {
          return rwLock;
      }
  
      public String getType() {
          return type;
      }
  
      public void setType(String type) {
          this.type = type;
      }
  
      public String getGroupKey() {
          return groupKey;
      }
  
      /**
       * init config gray if empty.
       */
      public void initConfigGrayIfEmpty() {
          if (this.configCacheGray == null) {
              this.configCacheGray = new HashMap<>(4);
          }
      }
  
      /**
       * init config gray if empty.
       *
       * @param grayName gray name.
       */
      public void initConfigGrayIfEmpty(String grayName) {
          initConfigGrayIfEmpty();
          if (!this.configCacheGray.containsKey(grayName)) {
              this.configCacheGray.put(grayName, ConfigCacheFactoryDelegate.getInstance().createConfigCacheGray(grayName));
          }
      }
  
      public List<ConfigCacheGray> getSortConfigGrays() {
          return sortedConfigCacheGrayList;
      }
  
      /**
       * sort config gray.
       */
      public void sortConfigGray() {
          if (configCacheGray == null || configCacheGray.isEmpty()) {
              sortedConfigCacheGrayList = null;
              return;
          }
  
          sortedConfigCacheGrayList = configCacheGray.values().stream().sorted((o1, o2) -> {
              if (o1.getPriority() != o2.getPriority()) {
                  return Integer.compare(o1.getPriority(), o2.getPriority()) * -1;
              } else {
                  return o1.getGrayName().compareTo(o2.getGrayName());
              }
  
          }).collect(Collectors.toList());
      }
  
      public Map<String, ConfigCacheGray> getConfigCacheGray() {
          return configCacheGray;
      }
  
      public void clearConfigGrays() {
          this.configCacheGray = null;
          this.sortedConfigCacheGrayList = null;
      }
  
  }
  