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

   1 /*
   2  * Copyright (c) 2014 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
   9 package org.opendaylight.controller.cluster.raft.messages;
  10
  11 import java.io.Externalizable;
  12 import java.io.IOException;
  13 import java.io.ObjectInput;
  14 import java.io.ObjectOutput;
  15
  16 public final class RequestVoteReply extends AbstractRaftRPC {
  17     private static final long serialVersionUID = 8427899326488775660L;
  18
  19     // true means candidate received vote
  20     private final boolean voteGranted;
  21
  22     public RequestVoteReply(long term, boolean voteGranted) {
  23         super(term);
  24         this.voteGranted = voteGranted;
  25     }
  26
  27     public boolean isVoteGranted() {
  28         return voteGranted;
  29     }
  30
  31     @Override
  32     public String toString() {
  33         return "RequestVoteReply [term=" + getTerm() + ", voteGranted=" + voteGranted + "]";
  34     }
  35
  36     private Object writeReplace() {
  37         return new Proxy(this);
  38     }
  39
  40     private static class Proxy implements Externalizable {
  41         private static final long serialVersionUID = 1L;
  42
  43         private RequestVoteReply requestVoteReply;
  44
  45         // checkstyle flags the public modifier as redundant which really doesn't make sense since it clearly isn't
  46         // redundant. It is explicitly needed for Java serialization to be able to create instances via reflection.
  47         @SuppressWarnings("checkstyle:RedundantModifier")
  48         public Proxy() {
  49         }
  50
  51         Proxy(RequestVoteReply requestVoteReply) {
  52             this.requestVoteReply = requestVoteReply;
  53         }
  54
  55         @Override
  56         public void writeExternal(ObjectOutput out) throws IOException {
  57             out.writeLong(requestVoteReply.getTerm());
  58             out.writeBoolean(requestVoteReply.voteGranted);
  59         }
  60
  61         @Override
  62         public void readExternal(ObjectInput in) throws IOException {
  63             long term = in.readLong();
  64             boolean voteGranted = in.readBoolean();
  65
  66             requestVoteReply = new RequestVoteReply(term, voteGranted);
  67         }
  68
  69         private Object readResolve() {
  70             return requestVoteReply;
  71         }
  72     }
  73 }