rocketmq-storm

Description

rocketmq-storm allows a Storm topology to consume an RocketMQ queue as an input source. It currently provides:

SimpleMessageSpout:

An simple implementation of backtype.storm.topology.IRichSpout,consumes the messages one by one.full features spout implementation exception flow control function.

BatchMessageSpout:

As the name implies,It handle the messages in a batch way,also with supporting reliable messages.

StreamMessageSpout:

Based on batchMessageSpout,cache batch messages and emit message one by one.It is also recommendation spout at the present stage.

RocketMQTridentSpout:

Based on latest trident api,but not compatible with jstorm now.

SimplePullMessageSpout:

Support message pulling model.

Documentation

Please look forward to!

Code Snippet,see here

private static final String BOLT_NAME      = "notifier";
private static final String PROP_FILE_NAME = "mqspout.test.prop";

private static Config       conf           = new Config();
private static boolean      isLocalMode    = true;

public static void main(String[] args) throws Exception {
    TopologyBuilder builder = buildTopology(ConfigUtils.init(PROP_FILE_NAME));

    submitTopology(builder);
}

private static TopologyBuilder buildTopology(Config config) throws Exception {
    TopologyBuilder builder = new TopologyBuilder();

    int boltParallel = NumberUtils.toInt((String) config.get("topology.bolt.parallel"), 1);

    int spoutParallel = NumberUtils.toInt((String) config.get("topology.spout.parallel"), 1);

    BoltDeclarer writerBolt = builder.setBolt(BOLT_NAME, new RocketMqBolt(), boltParallel);

    StreamMessageSpout defaultSpout = (StreamMessageSpout) RocketMQSpoutFactory
            .getSpout(Spouts.STREAM.getValue());
    RocketMQConfig mqConig = (RocketMQConfig) config.get(ConfigUtils.CONFIG_ROCKETMQ);
    defaultSpout.setConfig(mqConig);

    String id = (String) config.get(ConfigUtils.CONFIG_TOPIC);
    builder.setSpout(id, defaultSpout, spoutParallel);

    writerBolt.shuffleGrouping(id);
    return builder;
}

private static void submitTopology(TopologyBuilder builder) {
    try {
        String topologyName = String.valueOf(conf.get("topology.name"));
        StormTopology topology = builder.createTopology();

        if (isLocalMode == true) {
            LocalCluster cluster = new LocalCluster();
            conf.put(Config.STORM_CLUSTER_MODE, "local");

            cluster.submitTopology(topologyName, conf, topology);

            Thread.sleep(50000);

            cluster.killTopology(topologyName);
            cluster.shutdown();
        } else {
            conf.put(Config.STORM_CLUSTER_MODE, "distributed");
            StormSubmitter.submitTopology(topologyName, conf, topology);
        }

    } catch (AlreadyAliveException e) {
        LOG.error(e.getMessage(), e.getCause());
    } catch (InvalidTopologyException e) {
        LOG.error(e.getMessage(), e.getCause());
    } catch (Exception e) {
        LOG.error(e.getMessage(), e.getCause());
    }
} 

How to upload task jar

To produce a jar:

$ mvn clean install

Run it

$cd target && storm jar rocketmq-storm-1.0.0-SNAPSHOT-jar-with-dependencies.jar com.alibaba.rocketmq.storm.topology.SimpleTopology

Compatibility

RocketMQ 3.x

Jstorm 0.9.X

Storm 0.9.x