Package com.taobao.metamorphosis.client.consumer

Examples of com.taobao.metamorphosis.client.consumer.MessageConsumer

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        // subscribed topic
        final String topic = "meta-test";
        // consumer group
        final String group = "meta-example";
        // create consumer,ǿ�ҽ���ʹ�õ���
        final MessageConsumer consumer = sessionFactory.createBroadcastConsumer(new ConsumerConfig(group));
        // subscribe topic
        consumer.subscribe(topic, 1024 * 1024, new MessageListener() {

            @Override
            public void recieveMessages(final Message message) {
                System.out.println("Receive message " + new String(message.getData()));
            }


            @Override
            public Executor getExecutor() {
                // Thread pool to process messages,maybe null.
                return null;
            }
        });
        // complete subscribe
        consumer.completeSubscribe();

    }
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    }

    @Test(expected = InvalidConsumerConfigException.class)
    public void testCreateConsumer_NoGroup() throws Exception {
        final ConsumerConfig consumerConfig = new ConsumerConfig();
        final MessageConsumer messageConsumer = this.messageSessionFactory.createConsumer(consumerConfig);
    }
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    @Test(expected = InvalidConsumerConfigException.class)
    public void testCreateConsumer_InvalidThreadCount() throws Exception {
        final ConsumerConfig consumerConfig = new ConsumerConfig();
        consumerConfig.setGroup("test");
        consumerConfig.setFetchRunnerCount(0);
        final MessageConsumer messageConsumer = this.messageSessionFactory.createConsumer(consumerConfig);
    }
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    @Test(expected = IllegalArgumentException.class)
    public void testCreateConsumer_InvalidCommitOffsetsInterval() throws Exception {
        final ConsumerConfig consumerConfig = new ConsumerConfig();
        consumerConfig.setGroup("test");
        consumerConfig.setCommitOffsetPeriodInMills(-1);
        final MessageConsumer messageConsumer = this.messageSessionFactory.createConsumer(consumerConfig);
    }
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    @Test(expected = IllegalArgumentException.class)
    public void testCreateConsumer_InvalidFetchTimeout() throws Exception {
        final ConsumerConfig consumerConfig = new ConsumerConfig();
        consumerConfig.setGroup("test");
        consumerConfig.setFetchTimeoutInMills(0);
        final MessageConsumer messageConsumer = this.messageSessionFactory.createConsumer(consumerConfig);
    }
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    @Test
    public void testCreateConsumer() throws Exception {
        final ConsumerConfig consumerConfig = new ConsumerConfig();
        consumerConfig.setGroup("test");
        final MessageConsumer messageConsumer = this.messageSessionFactory.createConsumer(consumerConfig);
        assertNotNull(messageConsumer);
        assertTrue(this.messageSessionFactory.getChildren().contains(messageConsumer));
        messageConsumer.shutdown();
        assertFalse(this.messageSessionFactory.getChildren().contains(messageConsumer));
    }
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            final int count = 100;
            this.sendMessage(count, "hello", this.topic);

            for (int i = 0; i < 6; i++) {
                MetaMessageSessionFactory createdSessionFactory = new MetaMessageSessionFactory(this.metaClientConfig);
                MessageConsumer createdConsumer = createdSessionFactory.createConsumer(new ConsumerConfig("group"));
                this.subscribe(latch, count, createdConsumer);
                sessionFactories.add(createdSessionFactory);
                latch.countDown();
            }
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        // subscribed topic
        final String topic = "meta-test";
        // consumer group
        final String group = "meta-example";
        // create consumer,ǿ�ҽ���ʹ�õ���
        final MessageConsumer consumer = sessionFactory.createConsumer(new ConsumerConfig(group));
        // subscribe topic
        consumer.subscribe(topic, 1024 * 1024, new MessageListener() {

            private int count = 0;


            @Override
            public void recieveMessages(final Message message) {
                System.out.println("Receive message " + new String(message.getData()));
                // set auto ack to false
                message.getPartition().setAutoAck(false);
                // ack once per two messages
                if (++this.count % 2 == 0) {
                    message.getPartition().ack();
                    System.out.println("ack message");
                }
            }


            @Override
            public Executor getExecutor() {
                // Thread pool to process messages,maybe null.
                return null;
            }
        });
        // complete subscribe
        consumer.completeSubscribe();

    }
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        final String group = "meta-example";
        // create consumer,ǿ�ҽ���ʹ�õ���
        ConsumerConfig consumerConfig = new ConsumerConfig(group);
        // Ĭ������ȡ�ӳ�Ϊ5�룬�������ó�100���룬�����ʵ��Ӧ��Ҫ�������á�
        consumerConfig.setMaxDelayFetchTimeInMills(100);
        final MessageConsumer consumer = sessionFactory.createConsumer(consumerConfig);
        // subscribe topic
        consumer.subscribe(topic, 1024 * 1024, new MessageListener() {

            @Override
            public void recieveMessages(final Message message) {
                System.out.println("Receive message " + new String(message.getData()));
            }


            @Override
            public Executor getExecutor() {
                // Thread pool to process messages,maybe null.
                return null;
            }
        });
        // complete subscribe
        consumer.completeSubscribe();

    }
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        // subscribed topic
        final String topic = "meta-test";
        // consumer group
        final String group = "meta-example";
        // create consumer,ǿ�ҽ���ʹ�õ���
        final MessageConsumer consumer = sessionFactory.createConsumer(new ConsumerConfig(group));
        // start offset
        long offset = 0;
        MessageIterator it = null;
        // fetch messages
        while ((it = consumer.get(topic, new Partition("100-0"), offset, 1024 * 1024)) != null) {
            while (it.hasNext()) {
                final Message msg = it.next();
                System.out.println("Receive message " + new String(msg.getData()));
            }
            // move offset forward
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Related Classes of com.taobao.metamorphosis.client.consumer.MessageConsumer

  • com.taobao.meta.test.OneProducerTenConsumerOneGroupTest
  • com.taobao.metamorphosis.client.extension.spring.MessageListenerContainer
  • com.taobao.metamorphosis.client.MetaMessageSessionFactory
  • com.taobao.metamorphosis.client.MetaMessageSessionFactoryUnitTest
  • com.taobao.metamorphosis.example.AsyncConsumer
  • com.taobao.metamorphosis.example.BroadcastAsyncConsumer
  • com.taobao.metamorphosis.example.cache.AsyncConsumer
  • com.taobao.metamorphosis.example.SyncConsumer
  • com.taobao.metamorphosis.example.TransactionalConsumer
  • com.taobao.metamorphosis.tools.query.test.MessageConsumerTest
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