| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.gossip.replication; |
| |
| import org.apache.gossip.LocalMember; |
| import org.apache.gossip.manager.DatacenterRackAwareActiveGossiper; |
| import org.apache.gossip.model.Base; |
| |
| /** |
| * Replicable implementation which does replicate data only in the same data center. |
| * |
| * @param <T> A subtype of the class {@link org.apache.gossip.model.Base} which uses this interface |
| * @see Replicable |
| */ |
| public class DataCenterReplicable<T extends Base> implements Replicable<T> { |
| |
| @Override |
| public boolean shouldReplicate(LocalMember me, LocalMember destination, T message) { |
| if (!me.getProperties().containsKey(DatacenterRackAwareActiveGossiper.DATACENTER)) { |
| // replicate to others if I am not belong to any data center |
| return true; |
| } else if (!destination.getProperties() |
| .containsKey(DatacenterRackAwareActiveGossiper.DATACENTER)) { |
| // Do not replicate if the destination data center is not defined |
| return false; |
| } else { |
| return me.getProperties().get(DatacenterRackAwareActiveGossiper.DATACENTER) |
| .equals(destination.getProperties().get(DatacenterRackAwareActiveGossiper.DATACENTER)); |
| } |
| } |
| } |