Java Code Examples for org.apache.rocketmq.client.consumer.DefaultMQPushConsumer#registerMessageListener()
The following examples show how to use
org.apache.rocketmq.client.consumer.DefaultMQPushConsumer#registerMessageListener() .
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Example 1
| Source File: TracePushConsumer.java From rocketmq with Apache License 2.0 | 6 votes |
|
public static void main(String[] args) throws InterruptedException, MQClientException {
// Here,we use the default message track trace topic name
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("CID_JODIE_1",true);
consumer.subscribe("TopicTest", "*");
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
// Wrong time format 2017_0422_221800
consumer.setConsumeTimestamp("20181109221800");
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
System.out.printf("%s Receive New Messages: %s %n", Thread.currentThread().getName(), msgs);
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("CID_JODIE_1");
consumer.subscribe("TopicTest", "*");
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
//wrong time format 2017_0422_221800
consumer.setConsumeTimestamp("20181109221800");
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
System.out.printf("%s Receive New Messages: %s %n", Thread.currentThread().getName(), msgs);
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.out.printf("Consumer Started.%n");
}
Example 3
| Source File: PushConsumer.java From DDMQ 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);
//wrong time format 2017_0422_221800
consumer.setConsumeTimestamp("20170422221800");
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
System.out.printf("%s Receive New Messages: %s %n", Thread.currentThread().getName(), msgs);
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.out.printf("Consumer Started.%n");
}
Example 4
| Source File: Consumer.java From rocketmq-all-4.1.0-incubating with Apache License 2.0 | 6 votes |
|
public static void main(String[] args) throws InterruptedException, MQClientException, IOException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("ConsumerGroupNamecc4");
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
File classFile = new File(classLoader.getResource("MessageFilterImpl.java").getFile());
String filterCode = MixAll.file2String(classFile);
consumer.subscribe("TopicTest", "org.apache.rocketmq.example.filter.MessageFilterImpl",
filterCode);
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 5
| Source File: DelayConsumer.java From blog with MIT License | 6 votes |
|
public static void main(String[] args) throws MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("Delay_Consumer");
consumer.setNamesrvAddr("127.0.0.1:9876");
consumer.subscribe("DelayMessageTopic", "*");
consumer.registerMessageListener(
new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(
List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
MessageExt msg = msgs.get(0);
System.out.println(
new String(msg.getBody())
+ " storeTimestamp = "
+ (System.currentTimeMillis() - msg.getStoreTimestamp()));
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.out.println("Consumer 已启动");
}
Example 6
| Source File: PushConsumer.java From rocketmq-read 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.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
ConsumeConcurrentlyContext context) {
System.out.printf("%s Receive New Messages: %s %n", Thread.currentThread().getName(), msgs);
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.out.printf("Broadcast Consumer Started.%n");
}
Example 7
| Source File: AliyunMqConfiguration.java From paascloud-master with Apache License 2.0 | 5 votes |
|
/**
* Default mq push consumer default mq push consumer.
*
* @return the default mq push consumer
*
* @throws MQClientException the mq client exception
*/
@Bean
public DefaultMQPushConsumer defaultMQPushConsumer() throws MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(paascloudProperties.getAliyun().getRocketMq().getConsumerGroup());
consumer.setNamesrvAddr(paascloudProperties.getAliyun().getRocketMq().getNamesrvAddr());
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_LAST_OFFSET);
String[] strArray = AliyunMqTopicConstants.ConsumerTopics.UAC.split(GlobalConstant.Symbol.COMMA);
for (String aStrArray : strArray) {
String[] topicArray = aStrArray.split(GlobalConstant.Symbol.AT);
String topic = topicArray[0];
String tags = topicArray[1];
if (PublicUtil.isEmpty(tags)) {
tags = "*";
}
consumer.subscribe(topic, tags);
log.info("RocketMq UacPushConsumer topic = {}, tags={}", topic, tags);
}
consumer.registerMessageListener(uacPushMessageListener);
consumer.setConsumeThreadMax(2);
consumer.setConsumeThreadMin(2);
taskExecutor.execute(() -> {
try {
Thread.sleep(5000);
consumer.start();
log.info("RocketMq UacPushConsumer OK.");
} catch (InterruptedException | MQClientException e) {
log.error("RocketMq OpcPushConsumer, 出现异常={}", e.getMessage(), e);
}
});
return consumer;
}
Example 8
| 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 9
| Source File: RocketEventChannel.java From jstarcraft-core with Apache License 2.0 | 5 votes |
|
@Override
public void registerMonitor(Set<Class> types, EventMonitor monitor) {
try {
for (Class type : types) {
EventManager manager = managers.get(type);
if (manager == null) {
manager = new EventManager();
managers.put(type, manager);
// TODO 需要防止路径冲突
String address = name + StringUtility.DOT + type.getName();
address = address.replace(StringUtility.DOT, StringUtility.DASH);
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(address);
consumer.setInstanceName(name);
consumer.setNamesrvAddr(connections);
consumer.setConsumeMessageBatchMaxSize(1000);
consumer.subscribe(address, "*");
switch (mode) {
case QUEUE: {
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.setMessageModel(MessageModel.CLUSTERING);
break;
}
case TOPIC: {
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_LAST_OFFSET);
consumer.setMessageModel(MessageModel.BROADCASTING);
break;
}
}
EventHandler handler = new EventHandler(type, manager);
consumer.registerMessageListener(handler);
consumer.start();
consumers.put(type, consumer);
}
manager.attachMonitor(monitor);
}
} catch (Exception exception) {
throw new RuntimeException(exception);
}
}
Example 10
| Source File: RockMqTestCase.java From jstarcraft-core with Apache License 2.0 | 5 votes |
|
@Test
public void testTopic() throws Exception {
int size = 5;
DefaultMQPushConsumer[] consumers = new DefaultMQPushConsumer[size];
for (int index = 0; index < size; index++) {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("topic");
consumer.setInstanceName("topicConsumer" + index);
consumer.setNamesrvAddr("localhost:9876");
consumer.setMessageModel(MessageModel.BROADCASTING);
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
consumer.setConsumeMessageBatchMaxSize(1000);
consumer.subscribe("topic-message", "*");
consumer.registerMessageListener(listener);
consumer.start();
consumers[index] = consumer;
}
DefaultMQProducer producer = new DefaultMQProducer("topic");
producer.setNamesrvAddr("localhost:9876");
producer.start();
for (int index = 0; index < 10; index++) {
Message message = new Message("topic-message", "tag", ("RocketMQ 广播模式 " + index).getBytes(StringUtility.CHARSET));
producer.send(message);
}
semaphore.acquire(50);
producer.shutdown();
for (int index = 0; index < size; index++) {
consumers[index].shutdown();
}
}
Example 11
| 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 12
| Source File: Consumer.java From DDMQ with Apache License 2.0 | 5 votes |
|
public static void main(String[] args) throws InterruptedException, MQClientException {
CommandLine commandLine = buildCommandline(args);
if (commandLine != null) {
String group = commandLine.getOptionValue('g');
String topic = commandLine.getOptionValue('t');
String subscription = commandLine.getOptionValue('s');
final String returnFailedHalf = commandLine.getOptionValue('f');
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(group);
consumer.setInstanceName(Long.toString(System.currentTimeMillis()));
consumer.subscribe(topic, subscription);
consumer.registerMessageListener(new MessageListenerConcurrently() {
AtomicLong consumeTimes = new AtomicLong(0);
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
ConsumeConcurrentlyContext context) {
long currentTimes = this.consumeTimes.incrementAndGet();
System.out.printf("%-8d %s%n", currentTimes, msgs);
if (Boolean.parseBoolean(returnFailedHalf)) {
if ((currentTimes % 2) == 0) {
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
}
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.out.printf("Consumer Started.%n");
}
}
Example 13
| Source File: PushConsumerWithNamespace.java From rocketmq with Apache License 2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
DefaultMQPushConsumer defaultMQPushConsumer = new DefaultMQPushConsumer("InstanceTest", "cidTest");
defaultMQPushConsumer.setNamesrvAddr("127.0.0.1:9876");
defaultMQPushConsumer.subscribe("topicTest", "*");
defaultMQPushConsumer.registerMessageListener((MessageListenerConcurrently)(msgs, context) -> {
msgs.stream().forEach((msg) -> {
System.out.printf("Msg topic is:%s, MsgId is:%s, reconsumeTimes is:%s%n", msg.getTopic() , msg.getMsgId(), msg.getReconsumeTimes());
});
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
});
defaultMQPushConsumer.start();
}
Example 14
| Source File: RocketMQConfig.java From SpringMVC-Project with MIT License | 5 votes |
|
@Override
public void afterPropertiesSet() throws MQClientException {
clearUserProducer = new TransactionMQProducer(clearUserGroup);
clearUserProducer.setNamesrvAddr(nameServerAddress);
ExecutorService executorService = new ThreadPoolExecutor(2, 5, 100, TimeUnit.SECONDS, new ArrayBlockingQueue<>(2000), r -> {
Thread thread = new Thread(r);
thread.setName("client-transaction-msg-check-thread");
return thread;
});
clearUserProducer.setExecutorService(executorService);
clearUserProducer.setTransactionListener(applicationContext.getAutowireCapableBeanFactory().getBean(ClearUserTransactionListener.class));
clearUserProducer.start();
clearUserConsumer = new DefaultMQPushConsumer(clearUserGroup);
clearUserConsumer.setNamesrvAddr(nameServerAddress);
clearUserConsumer.subscribe(clearUserTopic, "*");
clearUserConsumer.registerMessageListener(applicationContext.getAutowireCapableBeanFactory().getBean(ClearUserMessageListener.class));
clearUserConsumer.start();
chatRecordProducer = new DefaultMQProducer(chatRecordGroup);
chatRecordProducer.setNamesrvAddr(nameServerAddress);
chatRecordProducer.start();
chatRecordConsumer = new DefaultMQPushConsumer(chatRecordGroup);
chatRecordConsumer.setNamesrvAddr(nameServerAddress);
chatRecordConsumer.subscribe(chatRecordTopic, chatRecordTags);
chatRecordConsumer.registerMessageListener(applicationContext.getAutowireCapableBeanFactory().getBean(ChatRecordMessageListener.class));
chatRecordConsumer.start();
}
Example 15
| Source File: Consumer3.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);
//去掉消息返回状态看看结果 所以记住返回消息结果很重要
String msgbody = new String(msg.getBody(), "utf-8");
System.out.println(msgbody + " Receive New Messages: " + msgs);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return null;
}
});
/*
* Launch the consumer instance.
*/
consumer.start();
System.out.printf("Consumer Started.%n");
}
Example 16
| Source File: Consumer1.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);
// int i=1/0; //模拟异常情况，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 17
| Source File: Consumer.java From code with Apache License 2.0 | 4 votes |
|
public static void main(String[] args) throws MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("test_quick_ms_consumer_name");
//consumer.setNamesrvAddr(Const.NAMESRV_ADDR_MASTER_SLAVE);
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_LAST_OFFSET);
consumer.subscribe("test_quick_topic", "*");
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
MessageExt me = msgs.get(0);
try {
String topic = me.getTopic();
String tags = me.getTags();
String keys = me.getKeys();
// 模拟消息消费失败异常
//if(keys.equals("key1")) {
// System.err.println("消息消费失败..");
// int a = 1/0;
//}
String msgBody = new String(me.getBody(), RemotingHelper.DEFAULT_CHARSET);
System.err.println("topic: " + topic + ",tags: " + tags + ", keys: " + keys + ",body: " + msgBody);
} catch (Exception e) {
e.printStackTrace();
// 消息重发次数
int recousumeTimes = me.getReconsumeTimes();
System.err.println("recousumeTimes: " + recousumeTimes);
if(recousumeTimes == 3) {
/*
* 对于broke消息重发到一定次数的时候
* 记录日志....
* 做补偿处理
*/
System.out.println("消息无法消费 msid="+me.getMsgId());
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
// broke消息重发
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.err.println("consumer start...");
}
Example 18
| Source File: Consumer.java From code with Apache License 2.0 | 4 votes |
|
public static void main(String[] args) throws MQClientException {
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("test_quick_consumer_name");
consumer.setNamesrvAddr(Const.NAMESRV_ADDR_SINGLE);
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_LAST_OFFSET);
consumer.subscribe("test_quick_topic", "*");
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
MessageExt me = msgs.get(0);
try {
String topic = me.getTopic();
String tags = me.getTags();
String keys = me.getKeys();
// 模拟消息消费失败异常
if(keys.equals("key1")) {
System.err.println("消息消费失败..");
int a = 1/0;
}
String msgBody = new String(me.getBody(), RemotingHelper.DEFAULT_CHARSET);
System.err.println("topic: " + topic + ",tags: " + tags + ", keys: " + keys + ",body: " + msgBody);
} catch (Exception e) {
e.printStackTrace();
// 消息重发次数
int recousumeTimes = me.getReconsumeTimes();
System.err.println("recousumeTimes: " + recousumeTimes);
if(recousumeTimes == 3) {
/*
* 对于broke消息重发到一定次数的时候
* 记录日志....
* 做补偿处理
*/
System.out.println("消息无法消费 msid="+me.getMsgId());
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
// broke消息重发
return ConsumeConcurrentlyStatus.RECONSUME_LATER;
}
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
consumer.start();
System.err.println("consumer start...");
}
Example 19
| 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 20
| 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();
LogUtil.debug(LOGGER, () -> "springcloud account-service rocketmq 接收到myth框架发出的信息====");
final Boolean success = mythMqReceiveService.processMessage(message);
if (success) {
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
} 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;
}
