| /** |
| * 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.activemq.broker.region.group; |
| |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.activemq.command.ConsumerId; |
| |
| /** |
| * A simple implementation which tracks every individual GroupID value but |
| * which can become a memory leak if clients die before they complete a message |
| * group. |
| * |
| * |
| */ |
| public class SimpleMessageGroupMap implements MessageGroupMap { |
| private Map<String, ConsumerId> map = new ConcurrentHashMap<String, ConsumerId>(); |
| |
| public void put(String groupId, ConsumerId consumerId) { |
| map.put(groupId, consumerId); |
| } |
| |
| public ConsumerId get(String groupId) { |
| return map.get(groupId); |
| } |
| |
| public ConsumerId removeGroup(String groupId) { |
| return map.remove(groupId); |
| } |
| |
| public MessageGroupSet removeConsumer(ConsumerId consumerId) { |
| SimpleMessageGroupSet ownedGroups = new SimpleMessageGroupSet(); |
| for (Iterator<String> iter = map.keySet().iterator(); iter.hasNext();) { |
| String group = iter.next(); |
| ConsumerId owner = map.get(group); |
| if (owner.equals(consumerId)) { |
| ownedGroups.add(group); |
| iter.remove(); |
| } |
| } |
| return ownedGroups; |
| } |
| |
| public String toString() { |
| return "message groups: " + map.size(); |
| } |
| |
| } |