Examples with JmsSpout org.apache.storm.jms.spout.JmsSpout used on opensource projects

Example 1 with JmsSpout

use of org.apache.storm.jms.spout.JmsSpout in project storm by apache.

the class ExampleJmsTopology method main.

@SuppressWarnings("serial")
public static void main(String[] args) throws Exception {
    // JMS Queue Provider
    JmsProvider jmsQueueProvider = new SpringJmsProvider("jms-activemq.xml", "jmsConnectionFactory", "notificationQueue");
    // JMS Topic provider
    JmsProvider jmsTopicProvider = new SpringJmsProvider("jms-activemq.xml", "jmsConnectionFactory", "notificationTopic");
    // JMS Producer
    JmsTupleProducer producer = new JsonTupleProducer();
    // JMS Queue Spout
    JmsSpout queueSpout = new JmsSpout();
    queueSpout.setJmsProvider(jmsQueueProvider);
    queueSpout.setJmsTupleProducer(producer);
    queueSpout.setJmsAcknowledgeMode(Session.CLIENT_ACKNOWLEDGE);
    // allow multiple instances
    queueSpout.setDistributed(true);
    TopologyBuilder builder = new TopologyBuilder();
    // spout with 5 parallel instances
    builder.setSpout(JMS_QUEUE_SPOUT, queueSpout, 5);
    // intermediate bolt, subscribes to jms spout, anchors on tuples, and auto-acks
    builder.setBolt(INTERMEDIATE_BOLT, new GenericBolt("INTERMEDIATE_BOLT", true, true, new Fields("json")), 3).shuffleGrouping(JMS_QUEUE_SPOUT);
    // bolt that subscribes to the intermediate bolt, and auto-acks
    // messages.
    builder.setBolt(FINAL_BOLT, new GenericBolt("FINAL_BOLT", true, true), 3).shuffleGrouping(INTERMEDIATE_BOLT);
    // bolt that subscribes to the intermediate bolt, and publishes to a JMS Topic
    JmsBolt jmsBolt = new JmsBolt();
    jmsBolt.setJmsProvider(jmsTopicProvider);
    // anonymous message producer just calls toString() on the tuple to create a jms message
    jmsBolt.setJmsMessageProducer(new JmsMessageProducer() {

        @Override
        public Message toMessage(Session session, ITuple input) throws JMSException {
            System.out.println("Sending JMS Message:" + input.toString());
            TextMessage tm = session.createTextMessage(input.toString());
            return tm;
        }
    });
    builder.setBolt(JMS_TOPIC_BOLT, jmsBolt).shuffleGrouping(INTERMEDIATE_BOLT);
    // JMS Topic spout
    JmsSpout topicSpout = new JmsSpout();
    topicSpout.setJmsProvider(jmsTopicProvider);
    topicSpout.setJmsTupleProducer(producer);
    topicSpout.setJmsAcknowledgeMode(Session.CLIENT_ACKNOWLEDGE);
    topicSpout.setDistributed(false);
    builder.setSpout(JMS_TOPIC_SPOUT, topicSpout);
    builder.setBolt(ANOTHER_BOLT, new GenericBolt("ANOTHER_BOLT", true, true), 1).shuffleGrouping(JMS_TOPIC_SPOUT);
    Config conf = new Config();
    if (args.length > 0) {
        conf.setNumWorkers(3);
        StormSubmitter.submitTopology(args[0], conf, builder.createTopology());
    } else {
        conf.setDebug(true);
        try (LocalCluster cluster = new LocalCluster();
            LocalTopology topo = cluster.submitTopology("storm-jms-example", conf, builder.createTopology())) {
            Utils.sleep(60000);
        }
    }
}