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

   1 /*
   2  * Copyright (c) 2015 Brocade Communications 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 /**
  11  * Immutable implementation of ElectionTerm.
  12  *
  13  * @author Thomas Pantelis
  14  */
  15 public class ImmutableElectionTerm implements ElectionTerm {
  16     private final long currentTerm;
  17     private final String votedFor;
  18
  19     private ImmutableElectionTerm(long currentTerm, String votedFor) {
  20         this.currentTerm = currentTerm;
  21         this.votedFor = votedFor;
  22     }
  23
  24     @Override
  25     public long getCurrentTerm() {
  26         return currentTerm;
  27     }
  28
  29     @Override
  30     public String getVotedFor() {
  31         return votedFor;
  32     }
  33
  34     @Override
  35     public void update(long currentTerm, String votedFor) {
  36         throw new UnsupportedOperationException();
  37     }
  38
  39     @Override
  40     public void updateAndPersist(long currentTerm, String votedFor) {
  41         throw new UnsupportedOperationException();
  42     }
  43
  44     @Override
  45     public String toString() {
  46         return "ImmutableElectionTerm [currentTerm=" + currentTerm + ", votedFor=" + votedFor + "]";
  47     }
  48
  49     public static ElectionTerm copyOf(ElectionTerm from) {
  50         return new ImmutableElectionTerm(from.getCurrentTerm(), from.getVotedFor());
  51     }
  52 }