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     /**
  19      * Identifier of the actor whose election term information this is
  20      */
  21     private long currentTerm = 0;
  22     private String votedFor = null;
  23
  24     private final DataPersistenceProvider persistence;
  25
  26     private final Logger log;
  27     private final String logId;
  28
  29     ElectionTermImpl(DataPersistenceProvider persistence, String logId, Logger log) {
  30         this.persistence = persistence;
  31         this.logId = logId;
  32         this.log = log;
  33     }
  34
  35     @Override
  36     public long getCurrentTerm() {
  37         return currentTerm;
  38     }
  39
  40     @Override
  41     public String getVotedFor() {
  42         return votedFor;
  43     }
  44
  45     @Override public void update(long currentTerm, String votedFor) {
  46         if(log.isDebugEnabled()) {
  47             log.debug("{}: Set currentTerm={}, votedFor={}", logId, currentTerm, votedFor);
  48         }
  49         this.currentTerm = currentTerm;
  50         this.votedFor = votedFor;
  51     }
  52
  53     @Override
  54     public void updateAndPersist(long currentTerm, String votedFor){
  55         update(currentTerm, votedFor);
  56         // FIXME : Maybe first persist then update the state
  57         persistence.persist(new UpdateElectionTerm(this.currentTerm, this.votedFor), NoopProcedure.instance());
  58     }
  59 }