/*
* (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> , boyan <killme2008@gmail.com>
*/
package com.taobao.metamorphosis.example;
import static com.taobao.metamorphosis.example.Help.initMetaConfig;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;
import java.util.Properties;
import com.taobao.metamorphosis.Message;
import com.taobao.metamorphosis.client.MetaClientConfig;
import com.taobao.metamorphosis.client.extension.OrderedMessageSessionFactory;
import com.taobao.metamorphosis.client.extension.OrderedMetaMessageSessionFactory;
import com.taobao.metamorphosis.client.extension.producer.OrderedMessagePartitionSelector;
import com.taobao.metamorphosis.client.producer.MessageProducer;
import com.taobao.metamorphosis.client.producer.SendResult;
import com.taobao.metamorphosis.cluster.Partition;
/**
* �ϸ�˳������Ϣ
*
* @author ��
* @since 2012-2-22 ����4:28:11
*/
public class OrderedProducer {
public static void main(final String[] args) throws Exception {
final MetaClientConfig metaClientConfig = initMetaConfig();
// ���÷����ֲ����,Ҫ������˶�Ӧ
final Properties partitionsInfo = new Properties();
partitionsInfo.put("topic.num.exampleTopic1", "0:4;1:4");
metaClientConfig.setPartitionsInfo(partitionsInfo);
// New session factory,ǿ�ҽ���ʹ�õ���
final OrderedMessageSessionFactory sessionFactory = new OrderedMetaMessageSessionFactory(metaClientConfig);
// create producer,ǿ�ҽ���ʹ�õ���
final MessageProducer producer = sessionFactory.createProducer(new CustomPartitionSelector());
// publish topic
final String topic = "meta-test";
producer.publish(topic);
final BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String line = null;
while ((line = readLine(reader)) != null) {
// send message
final SendResult sendResult = producer.sendMessage(new Message(topic, line.getBytes()));
// check result
if (!sendResult.isSuccess()) {
System.err.println("Send message failed,error message:" + sendResult.getErrorMessage());
}
else {
System.out.println("Send message successfully,sent to " + sendResult.getPartition());
}
}
}
private static String readLine(final BufferedReader reader) throws IOException {
System.out.println("Type a message to send:");
return reader.readLine();
}
static class CustomPartitionSelector extends OrderedMessagePartitionSelector {
@Override
protected Partition choosePartition(final String topic, final List<Partition> partitions, final Message message) {
// ����һ���Ĺ������Ҫ����ľֲ���Ϣ·�ɵ�ͬһ������
final int hashCode = new String(message.getData()).hashCode();
final int partitionNo = hashCode % partitions.size();
return partitions.get(partitionNo);
}
}
}