opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/raft/protobuff/client/messages/CompositeModificationPayload.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.protobuff.client.messages;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.protobuf.GeneratedMessage;
  13 import com.google.protobuf.InvalidProtocolBufferException;
  14 import com.google.protobuf.UnknownFieldSet;
  15 import org.opendaylight.controller.protobuff.messages.cluster.raft.AppendEntriesMessages;
  16 import org.opendaylight.controller.protobuff.messages.persistent.PersistentMessages;
  17
  18 import java.io.Serializable;
  19 import java.util.HashMap;
  20 import java.util.Map;
  21
  22 public class CompositeModificationPayload extends Payload implements
  23     Serializable {
  24     private static final long serialVersionUID = 1L;
  25
  26     private final PersistentMessages.CompositeModification modification;
  27
  28     public CompositeModificationPayload(){
  29         modification = null;
  30     }
  31     public CompositeModificationPayload(Object modification){
  32         this.modification = (PersistentMessages.CompositeModification) Preconditions.checkNotNull(modification, "modification should not be null");
  33     }
  34
  35     @Override public Map<GeneratedMessage.GeneratedExtension, PersistentMessages.CompositeModification> encode() {
  36         Preconditions.checkState(modification!=null);
  37         Map<GeneratedMessage.GeneratedExtension, PersistentMessages.CompositeModification> map = new HashMap<>();
  38         map.put(
  39             org.opendaylight.controller.protobuff.messages.shard.CompositeModificationPayload.modification, this.modification);
  40         return map;
  41     }
  42
  43     @Override public Payload decode(
  44         AppendEntriesMessages.AppendEntries.ReplicatedLogEntry.Payload payload) {
  45         PersistentMessages.CompositeModification modification = payload
  46             .getExtension(
  47                 org.opendaylight.controller.protobuff.messages.shard.CompositeModificationPayload.modification);
  48
  49
  50
  51         // The extension was put in the unknown field.
  52         // This is because extensions need to be registered
  53         // see org.opendaylight.controller.mdsal.CompositeModificationPayload.registerAllExtensions
  54         // also see https://developers.google.com/protocol-buffers/docs/reference/java/com/google/protobuf/ExtensionRegistry
  55         // If that is not done then on the other end the extension shows up as an unknown field
  56         // Need to figure out a better way to do this
  57         if(payload.getUnknownFields().hasField(2)){
  58             UnknownFieldSet.Field field =
  59                 payload.getUnknownFields().getField(2);
  60
  61             try {
  62                 modification =
  63                     PersistentMessages.CompositeModification
  64                         .parseFrom(field.getLengthDelimitedList().get(0));
  65             } catch (InvalidProtocolBufferException e) {
  66
  67             }
  68         }
  69
  70         return new CompositeModificationPayload(modification);
  71     }
  72
  73     public Object getModification(){
  74         return this.modification;
  75     }
  76 }