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.gray;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.utils.StringUtils;
  
  import java.util.Map;
  import java.util.Objects;
  
  import static com.alibaba.nacos.api.common.Constants.VIPSERVER_TAG;
  
  /**
   * Tag gray rule.
   *
   * @author shiyiyue
   */
  public class TagGrayRule extends AbstractGrayRule {
      
      String tagValue;
      
      public static final String VIP_SERVER_TAG_LABEL = VIPSERVER_TAG;
      
      public static final String TYPE_TAG = "tag";
      
      public static final String VERSION = "1.0.0";
      
      public static final int PRIORITY = Integer.MAX_VALUE - 1;
      
      public TagGrayRule() {
          super();
      }
      
      public TagGrayRule(String rawGrayRuleExp, int priority) {
          super(rawGrayRuleExp, priority);
      }
      
      @Override
      protected void parse(String rawGrayRule) throws NacosException {
          if (StringUtils.isBlank(rawGrayRule)) {
              return;
          }
          this.tagValue = rawGrayRule;
      }
      
      @Override
      public boolean match(Map<String, String> labels) {
          return labels.containsKey(VIP_SERVER_TAG_LABEL) && tagValue.equals(labels.get(VIP_SERVER_TAG_LABEL));
      }
      
      @Override
      public String getType() {
          return TYPE_TAG;
      }
      
      @Override
      public String getVersion() {
          return VERSION;
      }
      
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          TagGrayRule that = (TagGrayRule) o;
          return tagValue.equals(that.tagValue);
      }
      
      @Override
      public int hashCode() {
          return Objects.hash(tagValue);
      }
  }
  