| /* |
| * Copyright 2014 Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.store.flow; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.onosproject.cluster.NodeId; |
| |
| import com.google.common.base.Objects; |
| import com.google.common.base.Optional; |
| |
| /** |
| * Class to represent placement information about Master/Backup copy. |
| */ |
| public final class ReplicaInfo { |
| |
| private final Optional<NodeId> master; |
| private final List<NodeId> backups; |
| |
| /** |
| * Creates a ReplicaInfo instance. |
| * |
| * @param master NodeId of the node where the master copy should be |
| * @param backups list of NodeId, where backup copies should be placed |
| */ |
| public ReplicaInfo(NodeId master, List<NodeId> backups) { |
| this.master = Optional.fromNullable(master); |
| this.backups = checkNotNull(backups); |
| } |
| |
| /** |
| * Returns the NodeId, if there is a Node where the master copy should be. |
| * |
| * @return NodeId, where the master copy should be placed |
| */ |
| public Optional<NodeId> master() { |
| return master; |
| } |
| |
| /** |
| * Returns the collection of NodeId, where backup copies should be placed. |
| * |
| * @return collection of NodeId, where backup copies should be placed |
| */ |
| public List<NodeId> backups() { |
| return backups; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(master, backups); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (!(other instanceof ReplicaInfo)) { |
| return false; |
| } |
| ReplicaInfo that = (ReplicaInfo) other; |
| return Objects.equal(this.master, that.master) && |
| Objects.equal(this.backups, that.backups); |
| } |
| |
| // for Serializer |
| private ReplicaInfo() { |
| this.master = Optional.absent(); |
| this.backups = Collections.emptyList(); |
| } |
| } |