/**
* Copyright (C) 2010-2013 Alibaba Group Holding Limited
*
* 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 com.alibaba.rocketmq.client.impl.consumer;
import java.util.List;
import java.util.Set;
import com.alibaba.rocketmq.client.consumer.AllocateMessageQueueStrategy;
import com.alibaba.rocketmq.client.consumer.MessageQueueListener;
import com.alibaba.rocketmq.client.impl.factory.MQClientFactory;
import com.alibaba.rocketmq.common.message.MessageQueue;
import com.alibaba.rocketmq.common.protocol.heartbeat.MessageModel;
/**
* @author shijia.wxr<vintage.wang@gmail.com>
* @since 2013-6-22
*/
public class RebalancePullImpl extends RebalanceImpl {
private final DefaultMQPullConsumerImpl defaultMQPullConsumerImpl;
public RebalancePullImpl(DefaultMQPullConsumerImpl defaultMQPullConsumerImpl) {
this(null, null, null, null, defaultMQPullConsumerImpl);
}
public RebalancePullImpl(String consumerGroup, MessageModel messageModel,
AllocateMessageQueueStrategy allocateMessageQueueStrategy, MQClientFactory mQClientFactory,
DefaultMQPullConsumerImpl defaultMQPullConsumerImpl) {
super(consumerGroup, messageModel, allocateMessageQueueStrategy, mQClientFactory);
this.defaultMQPullConsumerImpl = defaultMQPullConsumerImpl;
}
@Override
public long computePullFromWhere(MessageQueue mq) {
return 0;
}
@Override
public void dispatchPullRequest(List<PullRequest> pullRequestList) {
}
@Override
public void messageQueueChanged(String topic, Set<MessageQueue> mqAll, Set<MessageQueue> mqDivided) {
MessageQueueListener messageQueueListener =
this.defaultMQPullConsumerImpl.getDefaultMQPullConsumer().getMessageQueueListener();
if (messageQueueListener != null) {
try {
messageQueueListener.messageQueueChanged(topic, mqAll, mqDivided);
}
catch (Throwable e) {
log.error("messageQueueChanged exception", e);
}
}
}
@Override
public boolean removeUnnecessaryMessageQueue(MessageQueue mq, ProcessQueue pq) {
this.defaultMQPullConsumerImpl.getOffsetStore().persist(mq);
this.defaultMQPullConsumerImpl.getOffsetStore().removeOffset(mq);
return true;
}
}