use of org.apache.storm.jms.bolt.JmsBolt 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);
}
}
}
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