How to use

prepare

method

in

org.apache.storm.drpc.ReturnResults

 /**
 * Creates and initializes a Publisher that writes to the DRPC servers. Intended to be used inside a Storm
 * bolt in a Storm topology.
 *
 * @param config Needs the Storm configuration {@link Map} in {@link com.yahoo.bullet.storm.BulletStormConfig#STORM_CONFIG}.
 */
public DRPCResultPublisher(BulletConfig config) {
  // Get the Storm Config that has all the relevant cluster settings and properties
  Map stormConfig = config.getRequiredConfigAs(DRPCConfig.STORM_CONFIG, Map.class);
  collector = new DRPCOutputCollector();
  // Wrap the collector in a OutputCollector (it just delegates to the underlying DRPCOutputCollector)
  OutputCollector boltOutputCollector = new OutputCollector(collector);
  bolt = new ReturnResults();
  // No need for a TopologyContext
  bolt.prepare(stormConfig, null, boltOutputCollector);
}

 /**
 * Creates and initializes a Publisher that writes to the DRPC servers. Intended to be used inside a Storm
 * bolt in a Storm topology.
 *
 * @param config Needs the Storm configuration {@link Map} in {@link com.yahoo.bullet.storm.BulletStormConfig#STORM_CONFIG}.
 */
public DRPCResultPublisher(BulletConfig config) {
  // Get the Storm Config that has all the relevant cluster settings and properties
  Map stormConfig = config.getRequiredConfigAs(DRPCConfig.STORM_CONFIG, Map.class);
  collector = new DRPCOutputCollector();
  // Wrap the collector in a OutputCollector (it just delegates to the underlying DRPCOutputCollector)
  OutputCollector boltOutputCollector = new OutputCollector(collector);
  bolt = new ReturnResults();
  // No need for a TopologyContext
  bolt.prepare(stormConfig, null, boltOutputCollector);
}