Examples with StringMessageMapper org.apache.storm.mqtt.mappers.StringMessageMapper used on opensource projects

Example 1 with StringMessageMapper

use of org.apache.storm.mqtt.mappers.StringMessageMapper in project storm by apache.

the class StormMqttIntegrationTest method buildMqttTopology.

public StormTopology buildMqttTopology() {
    TopologyBuilder builder = new TopologyBuilder();
    MqttOptions options = new MqttOptions();
    options.setTopics(Arrays.asList(TEST_TOPIC));
    options.setCleanConnection(false);
    TestSpout spout = new TestSpout(new StringMessageMapper(), options);
    MqttBolt bolt = new MqttBolt(options, new MqttTupleMapper() {

        @Override
        public MqttMessage toMessage(ITuple tuple) {
            LOG.info("Received: {}", tuple);
            return new MqttMessage(RESULT_TOPIC, RESULT_PAYLOAD.getBytes());
        }
    });
    builder.setSpout("mqtt-spout", spout);
    builder.setBolt("mqtt-bolt", bolt).shuffleGrouping("mqtt-spout");
    return builder.createTopology();
}