Package com.alibaba.rocketmq.client.consumer

Examples of com.alibaba.rocketmq.client.consumer.DefaultMQPushConsumer

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* Consumer，订阅消息
*/
public class Consumer {

    public static void main(String[] args) throws InterruptedException, MQClientException {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_4");

        consumer.subscribe("TopicTest", "*");

        consumer.registerMessageListener(new MessageListenerConcurrently() {

            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                    ConsumeConcurrentlyContext context) {
                System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });

        consumer.start();

        System.out.println("Consumer Started.");
    }
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*
*/
public class PushConsumer {

    public static void main(String[] args) throws InterruptedException, MQClientException {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_1");

        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.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);

                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });

        consumer.start();

        System.out.println("Broadcast Consumer Started.");
    }
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                    e.printStackTrace();
                }
            }
        }, 10000, 10000);

        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("benchmark_consumer");
        consumer.setInstanceName(Long.toString(System.currentTimeMillis()));

        consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_MAX_OFFSET);

        consumer.subscribe("BenchmarkTest", "*");

        consumer.registerMessageListener(new MessageListenerConcurrently() {
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                    ConsumeConcurrentlyContext context) {
                MessageExt msg = msgs.get(0);
                long now = System.currentTimeMillis();

                // 1
                statsBenchmarkConsumer.getReceiveMessageTotalCount().incrementAndGet();

                // 2
                long born2ConsumerRT = now - msg.getBornTimestamp();
                statsBenchmarkConsumer.getBorn2ConsumerTotalRT().addAndGet(born2ConsumerRT);

                // 3
                long store2ConsumerRT = now - msg.getStoreTimestamp();
                statsBenchmarkConsumer.getStore2ConsumerTotalRT().addAndGet(store2ConsumerRT);

                // 4
                compareAndSetMax(statsBenchmarkConsumer.getBorn2ConsumerMaxRT(), born2ConsumerRT);

                // 5
                compareAndSetMax(statsBenchmarkConsumer.getStore2ConsumerMaxRT(), store2ConsumerRT);

                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });

        consumer.start();

        System.out.println("Consumer Started.");
    }
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* PushConsumer，订阅消息
*/
public class PushConsumer {

    public static void main(String[] args) throws InterruptedException, MQClientException {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_6");

        /**
         * 订阅指定topic下所有消息
         */
        // consumer.subscribe("TopicTest", "*");

        /**
         * 订阅指定topic下tags分别等于TagA或TagC或TagD
         */
        consumer.subscribe("TopicTest", "TagA || TagC || TagD");

        consumer.registerMessageListener(new MessageListenerConcurrently() {
            AtomicLong consumeTimes = new AtomicLong(0);


            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                    ConsumeConcurrentlyContext context) {
                long offset = msgs.get(0).getQueueOffset();
                String maxOffset = msgs.get(0).getProperty(MessageConst.PROPERTY_MAX_OFFSET);
                long diff = Long.parseLong(maxOffset) - offset;
                if (diff > 100000) {
                    // TODO 消息堆积情况的特殊处理
                    // return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
                }

                System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);
                this.consumeTimes.incrementAndGet();
                if ((this.consumeTimes.get() % 2) == 0) {
                    return ConsumeConcurrentlyStatus.RECONSUME_LATER;
                }
                else if ((this.consumeTimes.get() % 3) == 0) {
                    context.setDelayLevelWhenNextConsume(5);
                    return ConsumeConcurrentlyStatus.RECONSUME_LATER;
                }

                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });

        consumer.start();

        System.out.println("Consumer Started.");
    }
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* 顺序消息消费，带事务方式（应用可控制Offset什么时候提交）
*/
public class Consumer {

    public static void main(String[] args) throws MQClientException {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_3");

        consumer.subscribe("TopicTest", "TagA || TagC || TagD");

        consumer.registerMessageListener(new MessageListenerOrderly() {
            AtomicLong consumeTimes = new AtomicLong(0);


            @Override
            public ConsumeOrderlyStatus consumeMessage(List<MessageExt> msgs, ConsumeOrderlyContext context) {
                context.setAutoCommit(false);
                System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);
                this.consumeTimes.incrementAndGet();
                if ((this.consumeTimes.get() % 2) == 0) {
                    return ConsumeOrderlyStatus.SUCCESS;
                }
                else if ((this.consumeTimes.get() % 3) == 0) {
                    return ConsumeOrderlyStatus.ROLLBACK;
                }
                else if ((this.consumeTimes.get() % 4) == 0) {
                    return ConsumeOrderlyStatus.COMMIT;
                }
                else if ((this.consumeTimes.get() % 5) == 0) {
                    context.setSuspendCurrentQueueTimeMillis(3000);
                    return ConsumeOrderlyStatus.SUSPEND_CURRENT_QUEUE_A_MOMENT;
                }

                return ConsumeOrderlyStatus.SUCCESS;
            }
        });

        consumer.start();

        System.out.println("Consumer Started.");
    }
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        System.out.println("----------------------------------------------");
        MixAll.printObjectProperties(null, new DefaultMQProducer());
        System.out.println("----------------------------------------------");
        MixAll.printObjectProperties(null, new TransactionMQProducer());
        System.out.println("----------------------------------------------");
        MixAll.printObjectProperties(null, new DefaultMQPushConsumer());
        System.out.println("----------------------------------------------");
        MixAll.printObjectProperties(null, new DefaultMQPullConsumer());
    }
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            new ConcurrentHashMap<String, MessageListener>();


    public ConsumerImpl(final Properties properties) {
        super(properties);
        this.defaultMQPushConsumer = new DefaultMQPushConsumer(new ClientRPCHook(sessionCredentials));

        String consumerGroup = properties.getProperty(PropertyKeyConst.ConsumerId);
        if (null == consumerGroup) {
            throw new ONSClientException("\'ConsumerId\' property is null");
        }
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            new ConcurrentHashMap<String, MessageOrderListener>();


    public OrderConsumerImpl(final Properties properties) {
        super(properties);
        this.defaultMQPushConsumer = new DefaultMQPushConsumer();

        String consumerGroup = properties.getProperty(PropertyKeyConst.ConsumerId);
        if (null == consumerGroup) {
            throw new ONSClientException("\'ConsumerGroup\' property is null");
        }
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            new ConcurrentHashMap<String, MessageListener>();


    public ConsumerImpl(final Properties properties) {
        super(properties);
        this.defaultMQPushConsumer = new DefaultMQPushConsumer();

        String consumerGroup = properties.getProperty(PropertyKeyConst.ConsumerId);
        if (null == consumerGroup) {
            throw new ONSClientException("\'ConsumerGroup\' property is null");
        }
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public class Consumer {

    public static void main(String[] args) throws InterruptedException, MQClientException {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("ConsumerGroupNamecc4");
        /**
         * 使用Java代码，在服务器做消息过滤
         */
        consumer.subscribe("TopicFilter7", MessageFilterImpl.class.getCanonicalName());

        consumer.registerMessageListener(new MessageListenerConcurrently() {

            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                    ConsumeConcurrentlyContext context) {
                System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);
                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();

        System.out.println("Consumer Started.");
    }
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Related Classes of com.alibaba.rocketmq.client.consumer.DefaultMQPushConsumer

  • com.alibaba.ons.api.impl.rocketmq.ConsumerImpl
  • com.alibaba.ons.api.impl.rocketmq.OrderConsumerImpl
  • com.alibaba.rocketmq.client.consumer.rebalance.AllocateMessageQueueAveragely
  • com.alibaba.rocketmq.client.impl.consumer.DefaultMQPushConsumerImpl
  • com.alibaba.rocketmq.example.benchmark.Consumer
  • com.alibaba.rocketmq.example.broadcast.PushConsumer
  • com.alibaba.rocketmq.example.filter.Consumer
  • com.alibaba.rocketmq.example.operation.Consumer
  • com.alibaba.rocketmq.example.ordermessage.Consumer
  • com.alibaba.rocketmq.example.quickstart.Consumer
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