opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/messages/InstallSnapshotReply.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 class InstallSnapshotReply extends AbstractRaftRPC {
  17     private static final long serialVersionUID = 642227896390779503L;
  18
  19     // The followerId - this will be used to figure out which follower is
  20     // responding
  21     private final String followerId;
  22     private final int chunkIndex;
  23     private final boolean success;
  24
  25     public InstallSnapshotReply(long term, String followerId, int chunkIndex, boolean success) {
  26         super(term);
  27         this.followerId = followerId;
  28         this.chunkIndex = chunkIndex;
  29         this.success = success;
  30     }
  31
  32     public String getFollowerId() {
  33         return followerId;
  34     }
  35
  36     public int getChunkIndex() {
  37         return chunkIndex;
  38     }
  39
  40     public boolean isSuccess() {
  41         return success;
  42     }
  43
  44     @Override
  45     public String toString() {
  46         StringBuilder builder = new StringBuilder();
  47         builder.append("InstallSnapshotReply [term=").append(getTerm()).append(", followerId=").append(followerId)
  48                 .append(", chunkIndex=").append(chunkIndex).append(", success=").append(success).append("]");
  49         return builder.toString();
  50     }
  51
  52     private Object writeReplace() {
  53         return new Proxy(this);
  54     }
  55
  56     private static class Proxy implements Externalizable {
  57         private static final long serialVersionUID = 1L;
  58
  59         private InstallSnapshotReply installSnapshotReply;
  60
  61         // checkstyle flags the public modifier as redundant which really doesn't make sense since it clearly isn't
  62         // redundant. It is explicitly needed for Java serialization to be able to create instances via reflection.
  63         @SuppressWarnings("checkstyle:RedundantModifier")
  64         public Proxy() {
  65         }
  66
  67         Proxy(InstallSnapshotReply installSnapshotReply) {
  68             this.installSnapshotReply = installSnapshotReply;
  69         }
  70
  71         @Override
  72         public void writeExternal(ObjectOutput out) throws IOException {
  73             out.writeLong(installSnapshotReply.getTerm());
  74             out.writeObject(installSnapshotReply.followerId);
  75             out.writeInt(installSnapshotReply.chunkIndex);
  76             out.writeBoolean(installSnapshotReply.success);
  77         }
  78
  79         @Override
  80         public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
  81             long term = in.readLong();
  82             String followerId = (String) in.readObject();
  83             int chunkIndex = in.readInt();
  84             boolean success = in.readBoolean();
  85
  86             installSnapshotReply = new InstallSnapshotReply(term, followerId, chunkIndex, success);
  87         }
  88
  89         private Object readResolve() {
  90             return installSnapshotReply;
  91         }
  92     }
  93 }