Storm 中drpc调用

package storm.starter;

import backtype.storm.Config;
import backtype.storm.LocalCluster;
import backtype.storm.LocalDRPC;
import backtype.storm.StormSubmitter;
import backtype.storm.drpc.DRPCSpout;
import backtype.storm.task.ShellBolt;
import backtype.storm.topology.BasicOutputCollector;
import backtype.storm.topology.IRichBolt;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.topology.TopologyBuilder;
import backtype.storm.topology.base.BaseBasicBolt;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Tuple;
import backtype.storm.tuple.Values;
import storm.starter.spout.RandomSentenceSpout;

import java.lang.management.ManagementFactory;
import java.util.HashMap;
import java.util.Map;

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;

/**
 * This topology demonstrates Storm‘s stream groupings and multilang
 * capabilities.
 */
public class Drpctest {
	public static final Logger logger = Logger.getLogger(Drpctest.class);
	public static class WordCount extends BaseBasicBolt {
		Map<String, Integer> counts = new HashMap<String, Integer>();

		@Override
		public void execute(Tuple tuple, BasicOutputCollector collector) {
			String word = tuple.getString(0);
			logger.error(this.toString() + "word = " + word);
			Integer count = counts.get(word);
			if (count == null)
				count = 0;
			count++;
			counts.put(word, count);
			logger.error(this.toString() + "count = " + count);
			collector.emit(new Values(word, count));
		}

		String str = Thread.currentThread().getName();

		@Override
		public void declareOutputFields(OutputFieldsDeclarer declarer) {
			logger.error("declareOutputFields :");
			declarer.declare(new Fields("result", "count"));
		}
	}

	public static class DrpcBolt extends BaseBasicBolt {
		Map<String, Integer> counts = new HashMap<String, Integer>();

		@Override
		public void execute(Tuple tuple, BasicOutputCollector collector) {
			String logString = tuple.getString(0);
			logger.error("DrpcBolt recve :" + logString);
		}

		@Override
		public void declareOutputFields(OutputFieldsDeclarer declarer) {
			// 暂时没用
			declarer.declare(new Fields("word1", "count1"));
		}
	}

	public static void main(String[] args) throws Exception {
		TopologyBuilder builder = new TopologyBuilder();

		// drpc
		LocalDRPC drpc = new LocalDRPC();
		DRPCSpout drpc_spout = new DRPCSpout("testdrpc", drpc);
		builder.setSpout("drpcspout", drpc_spout, 3);

		PropertyConfigurator
				.configure("/home/hadoop/code1/Kafka/src/Log4j.properties");

		// 接入drpc
		builder.setBolt("DrpcBolt", new DrpcBolt(), 1).shuffleGrouping(
				"drpcspout");

		Config conf = new Config();
		conf.setDebug(true);

		if (args != null && args.length > 0) {
			conf.setNumWorkers(3);

			StormSubmitter.submitTopology(args[0], conf,
					builder.createTopology());
		} else {
			conf.setMaxTaskParallelism(3);
			conf.setDebug(true);

			LocalCluster cluster = new LocalCluster();
			cluster.submitTopology("word-count", conf, builder.createTopology());

			String str = "send test drpc"; // 和 DRPCSpout 名字对应
			drpc.execute("testdrpc", str);

			Thread.sleep(10000);

			cluster.shutdown();
		}
	}
}