Package com.alibaba.rocketmq.client.consumer

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

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    public static void main(String[] args) throws InterruptedException, 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("CID_001");

        /**
         * 订阅指定topic下tags分别等于TagA或TagC或TagD
         */
        consumer.subscribe("TopicTest1", "TagA || TagC || TagD");
        /**
         * 订阅指定topic下所有消息<br>
         * 注意：一个consumer对象可以订阅多个topic
         */
        consumer.subscribe("TopicTest2", "*");
        consumer.subscribe("TopicTest3", "*");

        /**
         * 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<br>
         * 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.registerMessageListener(new MessageListenerConcurrently() {

            /**
             * 默认msgs里只有一条消息，可以通过设置consumeMessageBatchMaxSize参数来批量接收消息
             */
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                    ConsumeConcurrentlyContext context) {
                System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);

                MessageExt msg = msgs.get(0);
                if (msg.getTopic().equals("TopicTest1")) {
                    // 执行TopicTest1的消费逻辑
                    if (msg.getTags() != null && msg.getTags().equals("TagA")) {
                        // 执行TagA的消费
                    }
                    else if (msg.getTags() != null && msg.getTags().equals("TagC")) {
                        // 执行TagC的消费
                    }
                    else if (msg.getTags() != null && msg.getTags().equals("TagD")) {
                        // 执行TagD的消费
                    }
                }
                else if (msg.getTopic().equals("TopicTest2")) {
                    // 执行TopicTest2的消费逻辑
                }

                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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            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 static void main(String[] args) throws InterruptedException, 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("ConsumerGroupName");

        /**
         * 订阅指定topic下tags分别等于TagA或TagC或TagD
         */
        consumer.subscribe("TopicTest1", "TagA || TagC || TagD");
        /**
         * 订阅指定topic下所有消息<br>
         * 注意：一个consumer对象可以订阅多个topic
         */
        consumer.subscribe("TopicTest2", "*");

        consumer.registerMessageListener(new MessageListenerConcurrently() {

            /**
             * 默认msgs里只有一条消息，可以通过设置consumeMessageBatchMaxSize参数来批量接收消息
             */
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                    ConsumeConcurrentlyContext context) {
                System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);

                MessageExt msg = msgs.get(0);
                if (msg.getTopic().equals("TopicTest1")) {
                    // 执行TopicTest1的消费逻辑
                    if (msg.getTags() != null && msg.getTags().equals("TagA")) {
                        // 执行TagA的消费
                    }
                    else if (msg.getTags() != null && msg.getTags().equals("TagC")) {
                        // 执行TagC的消费
                    }
                    else if (msg.getTags() != null && msg.getTags().equals("TagD")) {
                        // 执行TagD的消费
                    }
                }
                else if (msg.getTopic().equals("TopicTest2")) {
                    // 执行TopicTest2的消费逻辑
                }

                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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* 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");
        /**
         * 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<br>
         * 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("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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                    e.printStackTrace();
                }
            }
        }, 10000, 10000);

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

        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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    public static void main(String[] args) throws InterruptedException, 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("ConsumerGroupName");

        /**
         * 订阅指定topic下tags分别等于TagA或TagC或TagD
         */
        consumer.subscribe("TopicTest1", "TagA || TagC || TagD");
        /**
         * 订阅指定topic下所有消息<br>
         * 注意：一个consumer对象可以订阅多个topic
         */
        consumer.subscribe("TopicTest2", "*");

        /**
         * 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<br>
         * 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.registerMessageListener(new MessageListenerConcurrently() {

            /**
             * 默认msgs里只有一条消息，可以通过设置consumeMessageBatchMaxSize参数来批量接收消息
             */
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                    ConsumeConcurrentlyContext context) {
                System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);

                MessageExt msg = msgs.get(0);
                if (msg.getTopic().equals("TopicTest1")) {
                    // 执行TopicTest1的消费逻辑
                    if (msg.getTags() != null && msg.getTags().equals("TagA")) {
                        // 执行TagA的消费
                    }
                    else if (msg.getTags() != null && msg.getTags().equals("TagC")) {
                        // 执行TagC的消费
                    }
                    else if (msg.getTags() != null && msg.getTags().equals("TagD")) {
                        // 执行TagD的消费
                    }
                }
                else if (msg.getTopic().equals("TopicTest2")) {
                    // 执行TopicTest2的消费逻辑
                }

                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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* 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");
        /**
         * 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<br>
         * 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("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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            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.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");
        /**
         * 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<br>
         * 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.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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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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