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.config.server.model.gray;
  
  import com.alibaba.nacos.api.exception.NacosException;
  
  import java.util.Map;
  
  /**
   * Gray rule. type with version determined parse logic.
   *
   * @author shiyiyue
   */
  public abstract class AbstractGrayRule implements GrayRule {
      
      protected String rawGrayRuleExp;
      
      protected int priority;
      
      protected volatile boolean valid = true;
      
      public AbstractGrayRule() {
      }
      
      public AbstractGrayRule(String rawGrayRuleExp, int priority) {
          try {
              parse(rawGrayRuleExp);
              this.priority = priority;
          } catch (NacosException e) {
              valid = false;
          }
          this.rawGrayRuleExp = rawGrayRuleExp;
      }
      
      /**
       * parse gray rule.
       *
       * @param rawGrayRule raw gray rule.
       * @throws NacosException if parse failed.
       * @date 2024/3/14
       */
      protected abstract void parse(String rawGrayRule) throws NacosException;
      
      /**
       * match gray rule.
       *
       * @param labels conn labels.
       * @return true if match.
       * @date 2024/3/14
       */
      public abstract boolean match(Map<String, String> labels);
      
      public boolean isValid() {
          return valid;
      }
      
      /**
       * get type.
       *
       * @return gray rule type.
       * @date 2024/3/14
       */
      public abstract String getType();
      
      /**
       * get version.
       *
       * @return gray rule version.
       * @date 2024/3/14
       */
      public abstract String getVersion();
      
      public String getRawGrayRuleExp() {
          return rawGrayRuleExp;
      }
      
      public int getPriority() {
          return priority;
      }
      
      public void setPriority(int priority) {
          this.priority = priority;
      }
  }
  