| /* |
| * Copyright 2014-2015 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.cluster; |
| |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.Optional; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.collect.ImmutableList; |
| |
| /** |
| * An immutable container for role information for a device, |
| * within the current cluster. Role attributes include current |
| * master and a preference-ordered list of backup nodes. |
| */ |
| public class RoleInfo { |
| private final Optional<NodeId> master; |
| private final List<NodeId> backups; |
| |
| public RoleInfo(NodeId master, List<NodeId> backups) { |
| this.master = Optional.ofNullable(master); |
| this.backups = ImmutableList.copyOf(backups); |
| } |
| |
| public RoleInfo() { |
| this.master = Optional.empty(); |
| this.backups = ImmutableList.of(); |
| } |
| |
| // This will return a Optional<NodeId> in the future. |
| public NodeId master() { |
| return master.orElseGet(() -> null); |
| } |
| |
| public List<NodeId> backups() { |
| return backups; |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (this == other) { |
| return true; |
| } |
| |
| if (!(other instanceof RoleInfo)) { |
| return false; |
| } |
| RoleInfo that = (RoleInfo) other; |
| |
| return Objects.equals(this.master, that.master) |
| && Objects.equals(this.backups, that.backups); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(master, backups); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(this.getClass()) |
| .add("master", master.orElseGet(() -> null)) |
| .add("backups", backups) |
| .toString(); |
| } |
| } |