/*
* (C) 2007-2012 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.
* Authors:
* wuhua <wq163@163.com>
*/
package com.taobao.metamorphosis.metaslave;
import java.util.Properties;
import org.apache.commons.lang.StringUtils;
import com.taobao.metamorphosis.AbstractBrokerPlugin;
import com.taobao.metamorphosis.exception.MetaClientException;
import com.taobao.metamorphosis.server.assembly.MetaMorphosisBroker;
import com.taobao.metamorphosis.server.utils.SlaveConfig;
/**
* ����һ����meta masterͬ����Ϣ���ݵ�slaver
*
* @author ��
* @since 2011-6-23 ����01:54:11
*/
public class MetamorphosisSlaveBroker extends AbstractBrokerPlugin {
private SubscribeHandler subscribeHandler;
@Override
public void init(final MetaMorphosisBroker metaMorphosisBroker, final Properties props) {
this.broker = metaMorphosisBroker;
this.props = props;
this.putSlaveProperties(this.broker, this.props);
if (!this.broker.getMetaConfig().isSlave()) {
throw new SubscribeMasterMessageException("Could not start as a slave broker");
}
try {
this.subscribeHandler = new SubscribeHandler(this.broker);
}
catch (final MetaClientException e) {
throw new SubscribeMasterMessageException("Create subscribeHandler failed", e);
}
}
private void putSlaveProperties(final MetaMorphosisBroker broker, final Properties props) {
SlaveConfig slaveConfig = new SlaveConfig();
slaveConfig.setSlaveId(Integer.parseInt(props.getProperty("slaveId")));
if (StringUtils.isNotBlank(props.getProperty("slaveGroup"))) {
slaveConfig.setSlaveGroup(props.getProperty("slaveGroup"));
}
else {
// set default slave group
slaveConfig.setSlaveGroup(slaveConfig.getSlaveGroup() + "_" + slaveConfig.getSlaveId());
}
if (StringUtils.isNotBlank(props.getProperty("slaveMaxDelayInMills"))) {
slaveConfig.setSlaveMaxDelayInMills(Integer.parseInt(props.getProperty("slaveMaxDelayInMills")));
}
if (StringUtils.isNotBlank(props.getProperty("autoSyncMasterConfig"))) {
slaveConfig.setAutoSyncMasterConfig(Boolean.valueOf(props.getProperty("autoSyncMasterConfig")));
}
broker.getMetaConfig().setSlaveConfig(slaveConfig);
// ��������BrokerIdPath���Ա�ע�ᵽslave��·��
broker.getBrokerZooKeeper().resetBrokerIdPath();
}
@Override
public String name() {
return "metaslave";
}
@Override
public void start() {
this.subscribeHandler.start();
}
@Override
public void stop() {
this.subscribeHandler.shutdown();
}
}