SyncConsumer.java

/*
 * (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 com.taobao.metamorphosis.Message;
import com.taobao.metamorphosis.client.MessageSessionFactory;
import com.taobao.metamorphosis.client.MetaMessageSessionFactory;
import com.taobao.metamorphosis.client.consumer.ConsumerConfig;
import com.taobao.metamorphosis.client.consumer.MessageConsumer;
import com.taobao.metamorphosis.client.consumer.MessageIterator;
import com.taobao.metamorphosis.cluster.Partition;


/**
 * We don't use synchronous consumer in production.
 * 
 * @Deprecated
 * @author apple
 * 
 */
@Deprecated
public class SyncConsumer {
    public static void main(final String[] args) throws Exception {
        // New session factory,ǿ�ҽ���ʹ�õ���
        final MessageSessionFactory sessionFactory = new MetaMessageSessionFactory(initMetaConfig());
        // subscribed topic
        final String topic = "meta-test";
        // consumer group
        final String group = "meta-example";
        // create consumer,ǿ�ҽ���ʹ�õ���
        final MessageConsumer consumer = sessionFactory.createConsumer(new ConsumerConfig(group));
        // start offset
        long offset = 0;
        MessageIterator it = null;
        // fetch messages
        while ((it = consumer.get(topic, new Partition("100-0"), offset, 1024 * 1024)) != null) {
            while (it.hasNext()) {
                final Message msg = it.next();
                System.out.println("Receive message " + new String(msg.getData()));
            }
            // move offset forward
            offset += it.getOffset();
        }

    }
}