opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/messages/ShardLeaderStateChanged.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.datastore.messages;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import org.eclipse.jdt.annotation.NonNull;
  13 import org.eclipse.jdt.annotation.Nullable;
  14 import org.opendaylight.controller.cluster.notifications.LeaderStateChanged;
  15 import org.opendaylight.yangtools.yang.data.tree.api.ReadOnlyDataTree;
  16
  17 /**
  18  * A local message derived from LeaderStateChanged containing additional Shard-specific info that is sent
  19  * when some state of the shard leader has changed. This message is used by the ShardManager to maintain
  20  * current Shard information.
  21  *
  22  * @author Thomas Pantelis
  23  */
  24 public final class ShardLeaderStateChanged extends LeaderStateChanged {
  25     private final @Nullable ReadOnlyDataTree localShardDataTree;
  26
  27     public ShardLeaderStateChanged(final @NonNull String memberId, final @Nullable String leaderId,
  28             final @NonNull ReadOnlyDataTree localShardDataTree, final short leaderPayloadVersion) {
  29         super(memberId, leaderId, leaderPayloadVersion);
  30         this.localShardDataTree = requireNonNull(localShardDataTree);
  31     }
  32
  33     public ShardLeaderStateChanged(final @NonNull String memberId, final @Nullable String leaderId,
  34             final short leaderPayloadVersion) {
  35         super(memberId, leaderId, leaderPayloadVersion);
  36         localShardDataTree = null;
  37     }
  38
  39     public @Nullable ReadOnlyDataTree localShardDataTree() {
  40         return localShardDataTree;
  41     }
  42 }