opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ElectionTermImpl.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.raft;
   9
  10 import org.opendaylight.controller.cluster.DataPersistenceProvider;
  11 import org.opendaylight.controller.cluster.raft.persisted.UpdateElectionTerm;
  12 import org.slf4j.Logger;
  13
  14 /**
  15  * Implementation of ElectionTerm for the RaftActor.
  16  */
  17 class ElectionTermImpl implements ElectionTerm {
  18     private long currentTerm = 0;
  19     private String votedFor = null;
  20
  21     private final DataPersistenceProvider persistence;
  22
  23     private final Logger log;
  24     private final String logId;
  25
  26     ElectionTermImpl(DataPersistenceProvider persistence, String logId, Logger log) {
  27         this.persistence = persistence;
  28         this.logId = logId;
  29         this.log = log;
  30     }
  31
  32     @Override
  33     public long getCurrentTerm() {
  34         return currentTerm;
  35     }
  36
  37     @Override
  38     public String getVotedFor() {
  39         return votedFor;
  40     }
  41
  42     @Override
  43     public void update(long newTerm, String newVotedFor) {
  44         log.debug("{}: Set currentTerm={}, votedFor={}", logId, newTerm, newVotedFor);
  45         this.currentTerm = newTerm;
  46         this.votedFor = newVotedFor;
  47     }
  48
  49     @Override
  50     public void updateAndPersist(long newTerm, String newVotedFor) {
  51         update(newTerm, newVotedFor);
  52         // FIXME : Maybe first persist then update the state
  53         persistence.persist(new UpdateElectionTerm(this.currentTerm, this.votedFor), NoopProcedure.instance());
  54     }
  55 }