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.naming.consistency.persistent.raft;
  
  import com.alibaba.nacos.naming.misc.GlobalExecutor;
  import org.apache.commons.lang3.RandomUtils;
  import org.apache.commons.lang3.StringUtils;
  
  import java.util.Objects;
  import java.util.concurrent.atomic.AtomicLong;
  
  /**
   * @author nacos
   */
  public class RaftPeer {
  
      public String ip;
  
      public String voteFor;
  
      public AtomicLong term = new AtomicLong(0L);
  
      public volatile long leaderDueMs = RandomUtils.nextLong(0, GlobalExecutor.LEADER_TIMEOUT_MS);
  
      public volatile long heartbeatDueMs = RandomUtils.nextLong(0, GlobalExecutor.HEARTBEAT_INTERVAL_MS);
  
      public State state = State.FOLLOWER;
  
      public void resetLeaderDue() {
          leaderDueMs = GlobalExecutor.LEADER_TIMEOUT_MS + RandomUtils.nextLong(0, GlobalExecutor.RANDOM_MS);
      }
  
      public void resetHeartbeatDue() {
          heartbeatDueMs = GlobalExecutor.HEARTBEAT_INTERVAL_MS;
      }
  
      public enum State {
          /**
           * Leader of the cluster, only one leader stands in a cluster
           */
          LEADER,
          /**
           * Follower of the cluster, report to and copy from leader
           */
          FOLLOWER,
          /**
           * Candidate leader to be elected
           */
          CANDIDATE
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(ip);
      }
  
      @Override
      public boolean equals(Object obj) {
          if (obj == null) {
              return false;
          }
  
          if (!(obj instanceof RaftPeer)) {
              return false;
          }
  
          RaftPeer other = (RaftPeer) obj;
  
          return StringUtils.equals(ip, other.ip);
      }
  }
  