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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
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package backtype.storm.contrib.jms.example;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import javax.jms.TextMessage;
import backtype.storm.Config;
import backtype.storm.LocalCluster;
import backtype.storm.StormSubmitter;
import backtype.storm.contrib.jms.JmsMessageProducer;
import backtype.storm.contrib.jms.JmsProvider;
import backtype.storm.contrib.jms.JmsTupleProducer;
import backtype.storm.contrib.jms.bolt.JmsBolt;
import backtype.storm.contrib.jms.spout.JmsSpout;
import backtype.storm.topology.TopologyBuilder;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Tuple;
import backtype.storm.utils.Utils;
public class ExampleJmsTopology {
public static final String JMS_QUEUE_SPOUT = "JMS_QUEUE_SPOUT";
public static final String INTERMEDIATE_BOLT = "INTERMEDIATE_BOLT";
public static final String FINAL_BOLT = "FINAL_BOLT";
public static final String JMS_TOPIC_BOLT = "JMS_TOPIC_BOLT";
public static final String JMS_TOPIC_SPOUT = "JMS_TOPIC_SPOUT";
public static final String ANOTHER_BOLT = "ANOTHER_BOLT";
@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);
queueSpout.setDistributed(true); // allow multiple instances
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, Tuple 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);
LocalCluster cluster = new LocalCluster();
cluster.submitTopology("storm-jms-example", conf, builder.createTopology());
Utils.sleep(60000);
cluster.killTopology("storm-jms-example");
cluster.shutdown();
}
}
}