Java Code Examples for org.apache.rocketmq.client.consumer.DefaultMQPushConsumer#setNamesrvAddr()
The following examples show how to use
org.apache.rocketmq.client.consumer.DefaultMQPushConsumer#setNamesrvAddr() .
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Example 1
| Source File: PushConsumer.java From rocketmq_trans_message with Apache License 2.0 | 6 votes |
|
public static void main(String[] args) throws InterruptedException, MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("CID_JODIE_1");
consumer.subscribe("Jodie_topic_1023", "*");
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.setNamesrvAddr("testserver001:9876;testserver004:9876");
consumer.registerMessageListener(new MessageListenerConcurrently() {
/**
*/
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
System.out.printf(Thread.currentThread().getName() + " Receive New Messages: " + msgs + "%n");
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.out.printf("Consumer Started.%n");
}
Example 2
| Source File: PushConsumer.java From rocketmq with Apache License 2.0 | 6 votes |
|
public static void main(String[] args) throws InterruptedException, MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_1");
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.setMessageModel(MessageModel.BROADCASTING);
// consumer.subscribe("TopicTest", "TagA || TagC || TagD");
consumer.subscribe("TopicTest", "*");
consumer.setNamesrvAddr("127.0.0.1:9876"); // TODO add by yunai
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
ConsumeConcurrentlyContext context) {
System.out.printf(Thread.currentThread().getName() + " Receive New Messages: " + msgs + "%n");
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.out.printf("Broadcast Consumer Started.%n");
}
Example 3
| Source File: TagFilterConsumer.java From blog with MIT License | 6 votes |
|
public static void main(String[] args) throws MQClientException {
/** TODO: 创建消息消费者 */
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("Tag_Filter_Consumer");
/** TODO: 设置 nameserver 地址 */
consumer.setNamesrvAddr("127.0.0.1:9876");
/** TODO: 订阅主题, 指定 Tag 过滤 */
consumer.subscribe("TagFilterTest", "TagA || TagB");
consumer.registerMessageListener(
new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(
List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
msgs.forEach(o -> System.out.println(new String(o.getBody())));
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
/** TODO: 连接 nameserver */
consumer.start();
System.out.println("Consumer 已开启============");
}
Example 4
| Source File: PushConsumer.java From blog with BSD 2-Clause "Simplified" License | 6 votes |
|
public static void main(String[] args) throws MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("ConsumerGroupName");
consumer.setNamesrvAddr("192.168.237.128:9876");
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.subscribe("TopicTest7", "*");
consumer.setConsumeThreadMin(1);
consumer.setConsumeThreadMax(1);
consumer.registerMessageListener(new MessageListenerConcurrently() {
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
System.out.printf("Time [" + new Date().toString() + "]," +Thread.currentThread().getName() + "Receive New Messages :" + msgs + "%n");
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
}
Example 5
| Source File: RMQNormalConsumer.java From rocketmq_trans_message with Apache License 2.0 | 5 votes |
|
public void create() {
consumer = new DefaultMQPushConsumer(consumerGroup);
consumer.setInstanceName(RandomUtil.getStringByUUID());
consumer.setNamesrvAddr(nsAddr);
try {
consumer.subscribe(topic, subExpression);
} catch (MQClientException e) {
logger.error("consumer subscribe failed!");
e.printStackTrace();
}
consumer.setMessageListener(listner);
}
Example 6
| Source File: SecKillChargeOrderConsumer.java From seckill-rocketmq with Apache License 2.0 | 5 votes |
|
@PostConstruct
public void init() {
defaultMQPushConsumer =
new DefaultMQPushConsumer(
MessageProtocolConst.SECKILL_CHARGE_ORDER_TOPIC.getConsumerGroup(),
new AclClientRPCHook(new SessionCredentials(aclAccessKey, aclAccessSecret)),
// 平均分配队列算法，hash
new AllocateMessageQueueAveragely());
defaultMQPushConsumer.setNamesrvAddr(namesrvConfig.nameSrvAddr());
// 从头开始消费
defaultMQPushConsumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
// 消费模式:集群模式
// 集群：同一条消息 只会被一个消费者节点消费到
// 广播：同一条消息 每个消费者都会消费到
defaultMQPushConsumer.setMessageModel(MessageModel.CLUSTERING);
// 注册监听器
defaultMQPushConsumer.registerMessageListener(messageListener);
// 设置每次拉取的消息量，默认为1
defaultMQPushConsumer.setConsumeMessageBatchMaxSize(1);
// 订阅所有消息
try {
defaultMQPushConsumer.subscribe(MessageProtocolConst.SECKILL_CHARGE_ORDER_TOPIC.getTopic(), "*");
// 启动消费者
defaultMQPushConsumer.start();
} catch (MQClientException e) {
LOGGER.error("[秒杀下单消费者]--SecKillChargeOrderConsumer加载异常!e={}", LogExceptionWapper.getStackTrace(e));
throw new RuntimeException("[秒杀下单消费者]--SecKillChargeOrderConsumer加载异常!", e);
}
LOGGER.info("[秒杀下单消费者]--SecKillChargeOrderConsumer加载完成!");
}
Example 7
| Source File: BroadcastConsumer2.java From blog with MIT License | 5 votes |
|
public static void main(String[] args) throws MQClientException {
/** TODO: 创建消息消费者对象 */
DefaultMQPushConsumer broadcast_consumer = new DefaultMQPushConsumer("Broadcast_Consumer");
/** TODO: 连接 namerserver */
broadcast_consumer.setNamesrvAddr("127.0.0.1:9876");
/**
* TODO: 设置 Consumer 类型
*
* <p>默认 CLUSTERING(集群模式，一个 Consumer Group 中的 Consumer 实例平均分摊消费消息)；
*
* <p>BROADCASTING(广播模式，一个消息被多个 Consumer 消费)
*/
broadcast_consumer.setMessageModel(MessageModel.BROADCASTING);
/** TODO: 订阅消息主题, 第二个参数表示 指定 订阅的 tag，* 表示全部 */
broadcast_consumer.subscribe("MyTopic", "*");
/** TODO: 注册消息监听 */
broadcast_consumer.registerMessageListener(
new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(
List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
// TODO: 输出获取的消息
msgs.forEach(o -> System.out.println(new String(o.getBody())));
// TODO: 返回消费结果
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
/** TODO: 启动 namerserver 连接 */
broadcast_consumer.start();
System.out.println("BroadcastConsumer2 已启动===========");
}
Example 8
| Source File: RocketMQPushConsumerFactory.java From rocketmq-spring-boot-starter with Apache License 2.0 | 5 votes |
|
private DefaultMQPushConsumer createDefaultMQPushConsumer(RocketMQConsumerListener rocketMQConsumerListener) {
RocketMQConsumerConfig config = rocketMQConsumerListener.getConsumerConfig();
DefaultMQPushConsumer defaultMQPushConsumer = new DefaultMQPushConsumer();
defaultMQPushConsumer.setNamesrvAddr(nameSrvAddr);
defaultMQPushConsumer.setConsumerGroup(config.getConsumerGroup());
Map<String, Class<?>> tags = config.getTags();
StringBuilder tagBuilder = new StringBuilder();
List<String> tmpTags = new ArrayList<>(tags.keySet());
for (int i = 0; i < tmpTags.size(); i++) {
if (tmpTags.contains("*") && tmpTags.size() > 1) {
throw new IllegalArgumentException("订阅的tag不合法");
}
tagBuilder.append(tmpTags.get(i));
if (tmpTags.size() > i + 1) {
tagBuilder.append("||");
}
}
try {
defaultMQPushConsumer.subscribe(config.getTopic(), tagBuilder.toString());
defaultMQPushConsumer.subscribe(config.getTopic(), "*");
} catch (MQClientException e) {
throw new IllegalArgumentException("订阅语法错误", e);
}
defaultMQPushConsumer.setMessageModel(config.getMessageModel());
if (config.getConsumeThreadMax() == 0) {
defaultMQPushConsumer.setConsumeThreadMax(this.consumeThreadMax);
} else {
defaultMQPushConsumer.setConsumeThreadMax(config.getConsumeThreadMax());
}
if (config.getConsumeThreadMin() == 0) {
defaultMQPushConsumer.setConsumeThreadMin(this.consumeThreadMin);
} else {
defaultMQPushConsumer.setConsumeThreadMin(config.getConsumeThreadMin());
}
return defaultMQPushConsumer;
}
Example 9
| Source File: AbstractTestCase.java From rocketmq-all-4.1.0-incubating with Apache License 2.0 | 5 votes |
|
protected int consumeMessages(int count,final String key,int timeout) throws MQClientException, InterruptedException {
final AtomicInteger cc = new AtomicInteger(0);
final CountDownLatch countDownLatch = new CountDownLatch(count);
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("hello");
consumer.setNamesrvAddr(nameServer);
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.subscribe(topic, "*");
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
ConsumeConcurrentlyContext context) {
for (MessageExt msg : msgs) {
String body = new String(msg.getBody());
if(key==null||body.contains(key)){
countDownLatch.countDown();
cc.incrementAndGet();
continue;
}
}
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
countDownLatch.await(timeout, TimeUnit.SECONDS);
consumer.shutdown();
return cc.get();
}
Example 10
| Source File: OrderConsumer.java From blog with MIT License | 5 votes |
|
public static void main(String[] args) throws MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("Order_Consumer");
consumer.setNamesrvAddr("127.0.0.1:9876");
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.subscribe("OrderTopic", "*");
/** TODO: 设置最小消费线程数 */
consumer.setConsumeThreadMin(1);
/** TODO: 设置最大消费线程数 */
consumer.setConsumeThreadMax(1);
consumer.registerMessageListener(
// 顺序消费，一个 Queue 对应一个线程
new MessageListenerOrderly() {
@Override
public ConsumeOrderlyStatus consumeMessage(
List<MessageExt> msgs, ConsumeOrderlyContext context) {
System.out.println(
Thread.currentThread().getName()
+ " message: "
+ new String(msgs.get(0).getBody())
+ " QueueID: "
+ msgs.get(0).getQueueId());
return ConsumeOrderlyStatus.SUCCESS;
}
});
consumer.start();
System.out.println("Consumer 已启动");
}
Example 11
| Source File: TransactionConsumer.java From java-tutorial with MIT License | 5 votes |
|
public static void main(String[] args) throws MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("transaction_Consumer");
consumer.setNamesrvAddr(NAMESRVADDR);
/**
* 设置Consumer第一次启动是从队列头部开始消费还是队列尾部开始消费
* 如果非第一次启动，那么按照上次消费的位置继续消费
*/
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.subscribe("TopicTransactionTest", "*");
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> list,
ConsumeConcurrentlyContext concurrentlyContext) {
for (MessageExt msg : list) {
System.out.println(msg + ",内容：" + new String(msg.getBody()));
}
try {
TimeUnit.SECONDS.sleep(5L);
} catch (InterruptedException e) {
e.printStackTrace();
//重试
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
//成功
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.out.println("consumer Started.");
}
Example 12
| Source File: RocketMQEventConfig.java From enode with MIT License | 5 votes |
|
@Bean(initMethod = "start", destroyMethod = "shutdown")
public DefaultMQPushConsumer exceptionConsumer(RocketMQPublishableExceptionListener publishableExceptionListener) throws MQClientException {
DefaultMQPushConsumer defaultMQPushConsumer = new DefaultMQPushConsumer();
defaultMQPushConsumer.setConsumerGroup(QueueProperties.DEFAULT_CONSUMER_GROUP2);
defaultMQPushConsumer.setNamesrvAddr(QueueProperties.NAMESRVADDR);
defaultMQPushConsumer.subscribe(QueueProperties.EXCEPTION_TOPIC, "*");
defaultMQPushConsumer.setMessageListener(publishableExceptionListener);
return defaultMQPushConsumer;
}
Example 13
| Source File: RocketMQEventConfig.java From enode with MIT License | 5 votes |
|
@Bean(initMethod = "start", destroyMethod = "shutdown")
public DefaultMQPushConsumer applicationConsumer(RocketMQApplicationMessageListener applicationMessageListener) throws MQClientException {
DefaultMQPushConsumer defaultMQPushConsumer = new DefaultMQPushConsumer();
defaultMQPushConsumer.setConsumerGroup(QueueProperties.DEFAULT_CONSUMER_GROUP1);
defaultMQPushConsumer.setNamesrvAddr(QueueProperties.NAMESRVADDR);
defaultMQPushConsumer.subscribe(QueueProperties.APPLICATION_TOPIC, "*");
defaultMQPushConsumer.setMessageListener(applicationMessageListener);
return defaultMQPushConsumer;
}
Example 14
| Source File: RocketMQEventConfig.java From enode with MIT License | 5 votes |
|
@Bean(initMethod = "start", destroyMethod = "shutdown")
public DefaultMQPushConsumer eventConsumer(RocketMQDomainEventListener domainEventListener) throws MQClientException {
DefaultMQPushConsumer defaultMQPushConsumer = new DefaultMQPushConsumer();
defaultMQPushConsumer.setConsumerGroup(QueueProperties.DEFAULT_CONSUMER_GROUP);
defaultMQPushConsumer.setNamesrvAddr(QueueProperties.NAMESRVADDR);
defaultMQPushConsumer.subscribe(QueueProperties.EVENT_TOPIC, "*");
defaultMQPushConsumer.setMessageListener(domainEventListener);
return defaultMQPushConsumer;
}
Example 15
| Source File: ClusterConsumer.java From blog with MIT License | 5 votes |
|
public static void main(String[] args) throws MQClientException {
/** TODO: 创建消息消费者对象 */
DefaultMQPushConsumer cluster_consumer = new DefaultMQPushConsumer("Cluster_Consumer");
/** TODO: 连接 namerserver */
cluster_consumer.setNamesrvAddr("127.0.0.1:9876");
/** TODO: 订阅消息主题, 第二个参数表示 指定 订阅的 tag，* 表示全部 */
cluster_consumer.subscribe("MyTopic", "*");
/** TODO: 一次传入 MessageListener 的 msgs 消息数，默认为 1 条 */
// cluster_consumer.setConsumeMessageBatchMaxSize(10);
/** TODO: 注册消息监听 */
cluster_consumer.registerMessageListener(
new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(
List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
// TODO: 输出获取的消息
System.out.println(new String(msgs.get(0).getBody()));
// System.out.println(msgs.size());
// msgs.forEach(o -> System.out.println(new String(o.getBody())));
// TODO: 返回消费结果
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
/** TODO: 启动 namerserver 连接 */
cluster_consumer.start();
System.out.println("Consumer 已启动===========");
}
Example 16
| Source File: RocketmqConsumer.java From myth with Apache License 2.0 | 4 votes |
|
@Bean
public DefaultMQPushConsumer pushConsumer() throws MQClientException {
/**
* 一个应用创建一个Consumer，由应用来维护此对象，可以设置为全局对象或者单例<br>
* 注意：ConsumerGroupName需要由应用来保证唯一
*/
DefaultMQPushConsumer consumer =
new DefaultMQPushConsumer(env.getProperty("spring.rocketmq.consumerGroupName"));
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.setNamesrvAddr(env.getProperty("spring.rocketmq.namesrvAddr"));
consumer.setConsumeMessageBatchMaxSize(2);
//RECONSUME_LATER的重试次数，RocketMQ默认是16次
consumer.setMaxReconsumeTimes(mythConfig.getRetryMax());
/**
* 订阅指定topic下tags
*/
String topic = env.getProperty("spring.rocketmq.topic");
consumer.subscribe(topic, TAGS);
consumer.registerMessageListener((List<MessageExt> msgList,
ConsumeConcurrentlyContext context) -> {
MessageExt msg = msgList.get(0);
try {
// 默认msgList里只有一条消息，可以通过设置consumeMessageBatchMaxSize参数来批量接收消息
final byte[] message = msg.getBody();
final Boolean aBoolean = mythMqReceiveService.processMessage(message);
} catch (Exception e) {
e.printStackTrace();
//重复消费
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
//如果没有return success，consumer会重复消费此信息，直到success。
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
});
/**
* Consumer对象在使用之前必须要调用start初始化，初始化一次即可<br>
*/
consumer.start();
return consumer;
}
Example 17
| Source File: Consumer2.java From rocketmq-all-4.1.0-incubating with Apache License 2.0 | 4 votes |
|
public static void main(String[] args) throws InterruptedException, MQClientException {
/*
* Instantiate with specified consumer group name.
*/
/**
* Consumer Group,非常重要的概念，后续会慢慢补充
*/
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_4");
//指定NameServer地址，多个地址以 ; 隔开
consumer.setNamesrvAddr("127.0.0.1:9876");
/*
* Specify name server addresses.
* <p/>
*
* Alternatively, you may specify name server addresses via exporting environmental variable: NAMESRV_ADDR
* <pre>
* {@code
* consumer.setNamesrvAddr("name-server1-ip:9876;name-server2-ip:9876");
* }
* </pre>
*/
/*
* Specify where to start in case the specified consumer group is a brand new one.
*/
/**
* 设置Consumer第一次启动是从队列头部开始消费还是队列尾部开始消费
* 如果非第一次启动，那么按照上次消费的位置继续消费
*/
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
/*
* Subscribe one more more topics to consume.
*/
consumer.subscribe("TopicTest", "*");
/*
* Register callback to execute on arrival of messages fetched from brokers.
*/
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
ConsumeConcurrentlyContext context) {
try {
MessageExt msg = msgs.get(0);
//通过把时间打印出来看看重试的时间效果 重试应该时间10s 30s 1m 2m 3m 4m 5m 6m 7m 8m 9m 10m 20m 30m 1h 2h
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS");
String msgbody = new String(msg.getBody(), "utf-8");
System.out.println(simpleDateFormat.format(new Date())+msgbody + " Receive New Messages: " + msgs);
Thread.sleep(200000); //不模拟异常，模拟非常耗时看看效果如何？？，观察消息重试情况 观察该字段的值的变化reconsumeTimes
} catch (Exception e) {
e.printStackTrace();
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
/*
* Launch the consumer instance.
*/
consumer.start();
System.out.printf("Consumer Started.%n");
}
Example 18
| Source File: RocketmqConsumer.java From myth with Apache License 2.0 | 4 votes |
|
/**
* Push consumer default mq push consumer.
*
* @return the default mq push consumer
* @throws MQClientException the mq client exception
*/
@Bean
public DefaultMQPushConsumer pushConsumer() throws MQClientException {
/**
* 一个应用创建一个Consumer，由应用来维护此对象，可以设置为全局对象或者单例<br>
* 注意：ConsumerGroupName需要由应用来保证唯一
*/
DefaultMQPushConsumer consumer =
new DefaultMQPushConsumer(env.getProperty("spring.rocketmq.consumerGroupName"));
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.setNamesrvAddr(env.getProperty("spring.rocketmq.namesrvAddr"));
consumer.setInstanceName(env.getProperty("spring.rocketmq.instanceName"));
//设置批量消费，以提升消费吞吐量，默认是1
consumer.setConsumeMessageBatchMaxSize(3);
consumer.subscribe(QUEUE, QUEUE);
consumer.registerMessageListener((List<MessageExt> msgList,
ConsumeConcurrentlyContext context) -> {
MessageExt msg = msgList.get(0);
try {
// 默认msgList里只有一条消息，可以通过设置consumeMessageBatchMaxSize参数来批量接收消息
final byte[] message = msg.getBody();
LogUtil.debug(LOGGER,()->"springcloud inventory-serivce rocketmq 接收到myth框架发出的信息====");
final Boolean success = mythMqReceiveService.processMessage(message);
} catch (Exception e) {
e.printStackTrace();
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
//如果没有return success，consumer会重复消费此信息，直到success。
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
});
consumer.start();
return consumer;
}
Example 19
| Source File: RocketmqConsumer.java From myth with Apache License 2.0 | 4 votes |
|
/**
* Push consumer default mq push consumer.
*
* @return the default mq push consumer
* @throws MQClientException the mq client exception
*/
@Bean
public DefaultMQPushConsumer pushConsumer() throws MQClientException {
/**
* 一个应用创建一个Consumer，由应用来维护此对象，可以设置为全局对象或者单例<br>
* 注意：ConsumerGroupName需要由应用来保证唯一
*/
DefaultMQPushConsumer consumer =
new DefaultMQPushConsumer(env.getProperty("spring.rocketmq.consumerGroupName"));
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.setNamesrvAddr(env.getProperty("spring.rocketmq.namesrvAddr"));
consumer.setInstanceName(env.getProperty("spring.rocketmq.instanceName"));
//设置批量消费，以提升消费吞吐量，默认是1
consumer.setConsumeMessageBatchMaxSize(1);
/**
* 订阅指定topic下tags
*/
consumer.subscribe(TOPIC, TOPIC);
consumer.registerMessageListener((List<MessageExt> msgList, ConsumeConcurrentlyContext context) -> {
MessageExt msg = msgList.get(0);
try {
// 默认msgList里只有一条消息，可以通过设置consumeMessageBatchMaxSize参数来批量接收消息
final byte[] message = msg.getBody();
final Boolean success = mythMqReceiveService.processMessage(message);
if (success) {
//如果没有return success，consumer会重复消费此信息，直到success。
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
} catch (Exception e) {
e.printStackTrace();
//重复消费3次
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
});
consumer.start();
return consumer;
}
Example 20
| Source File: Consumer.java From rocketmq with Apache License 2.0 | 4 votes |
|
public static void main(String[] args) throws InterruptedException, MQClientException {
/*
* Instantiate with specified consumer group name.
*/
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_4");
consumer.setConsumeThreadMin(1);
consumer.setConsumeThreadMax(1);
// consumer.setConsumeMessageBatchMaxSize(2);
consumer.setNamesrvAddr("127.0.0.1:9876"); // TODO add by yunai
/*
* Specify name server addresses.
* <p/>
*
* Alternatively, you may specify name server addresses via exporting environmental variable: NAMESRV_ADDR
* <pre>
* {@code
* consumer.setNamesrvAddr("name-server1-ip:9876;name-server2-ip:9876");
* }
* </pre>
*/
/*
* Specify where to start in case the specified consumer group is a brand new one.
*/
// consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
/*
* Subscribe one more more topics to consume.
*/
// consumer.subscribe("TopicRead3", "*");
// consumer.subscribe("TopicTest", "*");
consumer.subscribe("TopicTest_mis", "*");
/*
* Register callback to execute on arrival of messages fetched from brokers.
*/
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
ConsumeConcurrentlyContext context) {
System.out.printf(Thread.currentThread().getName() + " Receive New Messages: " + msgs + "%n");
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
// return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
});
/*
* Launch the consumer instance.
*/
consumer.start();
System.out.printf("Consumer Started.%n");
}
