| /* |
| * Copyright 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.Arrays; |
| import java.util.Collection; |
| import java.util.Set; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Sets; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * A data partition. |
| * <p> |
| * Partition represents a slice of the data space and is made up of a collection |
| * of {@link org.onosproject.cluster.ControllerNode nodes} |
| * that all maintain copies of this data. |
| */ |
| public class Partition { |
| |
| private final String name; |
| private final Set<NodeId> members; |
| |
| private Partition() { |
| name = null; |
| members = null; |
| } |
| |
| public Partition(String name, Collection<NodeId> members) { |
| this.name = checkNotNull(name); |
| this.members = ImmutableSet.copyOf(checkNotNull(members)); |
| } |
| |
| /** |
| * Returns the partition name. |
| * <p> |
| * Each partition is identified by a unique name. |
| * @return partition name |
| */ |
| public String getName() { |
| return this.name; |
| } |
| |
| /** |
| * Returns the collection of controller node identifiers that make up this partition. |
| * @return collection of controller node identifiers |
| */ |
| public Collection<NodeId> getMembers() { |
| return this.members; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Arrays.deepHashCode(new Object[] {name, members}); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (this == other) { |
| return true; |
| } |
| |
| if (other == null || !Partition.class.isInstance(other)) { |
| return false; |
| } |
| |
| Partition that = (Partition) other; |
| |
| if (!this.name.equals(that.name) || (this.members == null && that.members != null) |
| || (this.members != null && that.members == null) || this.members.size() != that.members.size()) { |
| return false; |
| } |
| |
| return Sets.symmetricDifference(this.members, that.members).isEmpty(); |
| } |
| } |