rocketmq-spring-boot-samples/rocketmq-consume-demo/src/main/java/org/apache/rocketmq/samples/springboot/consumer/MessageExtConsumer.java

/*
 * 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.rocketmq.samples.springboot.consumer;

import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.common.UtilAll;
import org.apache.rocketmq.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.MessageExt;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.apache.rocketmq.spring.core.RocketMQPushConsumerLifecycleListener;
import org.springframework.stereotype.Service;

/**
 * MessageExtConsumer, consume listener impl class.
 */
@Service
@RocketMQMessageListener(topic = "${demo.rocketmq.msgExtTopic}", selectorExpression = "tag0||tag1", consumerGroup = "${spring.application.name}-message-ext-consumer")
public class MessageExtConsumer implements RocketMQListener<MessageExt>, RocketMQPushConsumerLifecycleListener {
    @Override
    public void onMessage(MessageExt message) {
        System.out.printf("------- MessageExtConsumer received message, msgId: %s, body:%s \n", message.getMsgId(), new String(message.getBody()));
    }

    @Override
    public void prepareStart(DefaultMQPushConsumer consumer) {
        // set consumer consume message from now
        consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_TIMESTAMP);
        consumer.setConsumeTimestamp(UtilAll.timeMillisToHumanString3(System.currentTimeMillis()));
    }
}