Java Utils類代碼示例

import backtype.storm.utils.Utils; //導入依賴的package包/類
@Override
public void run() {
  try {
    while (true) {
      long now = System.currentTimeMillis();
      if (!_supervisorViewOfAssignedPorts.get().isEmpty()) {
        _lastTime = now;
      }
      if ((now - _lastTime) > 1000L * _timeoutSecs) {
        LOG.info("Supervisor has not had anything assigned for {} secs. Committing suicide...", _timeoutSecs);
        Runtime.getRuntime().halt(0);
      }
      Utils.sleep(5000);
    }
  } catch (Throwable t) {
    LOG.error(t.getMessage());
    Runtime.getRuntime().halt(2);
  }
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
@Override
public void nextTuple() {
    long thisSecond;

    // find out if a new second has started and if so
    thisSecond = System.currentTimeMillis() / 1000;
    if (thisSecond != this.lastSecond) {
        // a new second has started
        this.lastSecond = thisSecond;
        this.tuplesRemainingThisSecond = this.tuplesPerSecond;
    }

    this.tuplesRemainingThisSecond--;             // bookkeeping
    if (this.tuplesRemainingThisSecond > 0) {     // emit if possible
        super.nextTuple();
    } else {                                      // throttle if necessary
        /** we should wait 1ms. {@see backtype.storm.spout.ISpout#nextTuple()} */
        Utils.sleep(1);
    }
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
public static void main(String[] args) throws SQLException {

        // tableName is the name of the table in splice to insert records to
        // server is the server instance running splice
        String tableName = "students";
        String server = "localhost";
        TopologyBuilder builder = new TopologyBuilder();

        // set the spout for the topology
        builder.setSpout("seedDataFromMySql", new MySqlSpout());

        // dump the stream data into splice       
        builder.setBolt("dbRowProcessing", new MySqlSpliceBolt(server, tableName), 1).shuffleGrouping("seedDataFromMySql");

        Config conf = new Config();
        conf.setDebug(true);
        LocalCluster cluster = new LocalCluster();
        cluster.submitTopology("mysql-splice-topology", conf, builder.createTopology());
        Utils.sleep(3000);
        cluster.shutdown();
    }
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
@Override
public void nextTuple() {
    Utils.sleep(1000);
    String[] words = new String[]{"splice", "machine", "hadoop", "rdbms", "acid", "sql", "transactions"};
    Integer[] numbers = new Integer[]{
            1, 2, 3, 4, 5, 6, 7
    };
    if (count == numbers.length - 1) {
        count = 0;
    }
    count++;
    int number = numbers[count];
    String word = words[count];
    int randomNum = (int) (Math.random() * 1000);
    System.out.println("Random Number: " + randomNum);
    System.out.println("SpliceIntegerSpout emitting: " + number);
    _collector.emit(new Values(word, number));
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
public void nextTuple() {
    if (bufferQueue.isEmpty()) {
        // pass in mysql server, db name, user, password
        seedBufferQueue("localhost", "test", "root", "");
        Utils.sleep(100);
    } else {
        // Replace name with the data being extracted.
        // This example expects only name to be returned in the sql/and thus is only item output by the spout.
        //  To add additional data add them to the values using new Values(value1, value2, etc) then emit the values
        String name = bufferQueue.poll();
        if (name != null) {
            Values values = new Values();
            values.add(name);
            _collector.emit(values);
        }
        Utils.sleep(50);
    }
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
@Test
public void testExecuteUnique() {
	IncSpout spout = new IncSpout(1);
	
	TestSpoutOutputCollector collector = new TestSpoutOutputCollector();
	spout.open(null, null, new SpoutOutputCollector(collector));
	
	List<List<Object>> result = new LinkedList<List<Object>>();
	
	for(int i = 0; i < 5; ++i) {
		ArrayList<Object> attributes = new ArrayList<Object>();
		attributes.add(new Long(i));
		result.add(attributes);
		
		spout.nextTuple();
	}
	
	Assert.assertEquals(result, collector.output.get(Utils.DEFAULT_STREAM_ID));
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
public IdDictionary(StormTopology topology) {
	List<String> componentNames = new ArrayList<String>(topology
			.get_spouts().keySet());
	componentNames.addAll(topology.get_bolts().keySet());
	componentNames.addAll(topology.get_state_spouts().keySet());

	for (String name : componentNames) {
		ComponentCommon common = Utils.getComponentCommon(topology,
				name);
		List<String> streams = new ArrayList<String>(common
				.get_streams().keySet());
		streamNametoId.put(name, idify(streams));
		streamIdToName.put(name,
				Utils.reverseMap(streamNametoId.get(name)));
	}
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
@Override
public void update_storm(String topologyId, StormStatus newElems)
		throws Exception {
	/**
	 * , not sure where the old exist error or not The raw code
	 * (set-data cluster-state (storm-path storm-id) (-> (storm-base this
	 * storm-id nil) (merge new-elems) Utils/serialize)))
	 */

	StormBase base = this.storm_base(topologyId, null);

	if (base != null) {
		base.setStatus(newElems);
		cluster_state.set_data(Cluster.storm_path(topologyId),
				Utils.serialize(base));
	}

}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
public int maxTopologyMessageTimeout() {
	Integer max = Utils.getInt(_stormConf
			.get(Config.TOPOLOGY_MESSAGE_TIMEOUT_SECS));
	for (String spout : getRawTopology().get_spouts().keySet()) {
		ComponentCommon common = getComponentCommon(spout);
		String jsonConf = common.get_json_conf();
		if (jsonConf != null) {
			Map conf = (Map) Utils.from_json(jsonConf);
			Object comp = conf.get(Config.TOPOLOGY_MESSAGE_TIMEOUT_SECS);
			if (comp != null) {
				max = Math.max(Utils.getInt(comp), max);
			}
		}
	}
	return max;
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
public static void submitRebalance(String topologyName, RebalanceOptions options, Map conf) throws Exception {
    Map stormConf = Utils.readStormConfig();
    if (conf != null) {
        stormConf.putAll(conf);
    }

    NimbusClient client = null;
    try {
        client = NimbusClient.getConfiguredClient(stormConf);
        client.getClient().rebalance(topologyName, options);
    } catch (Exception e) {
        throw e;
    } finally {
        if (client != null) {
            client.close();
        }
    }
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
@Override
public void open(Map conf, TopologyContext context,
		SpoutOutputCollector collector) {
	_collector = collector;
	if (_local_drpc_id == null) {
		int numTasks = context.getComponentTasks(
				context.getThisComponentId()).size();
		int index = context.getThisTaskIndex();

		int port = Utils.getInt(conf.get(Config.DRPC_INVOCATIONS_PORT));
		List<String> servers = (List<String>) conf.get(Config.DRPC_SERVERS);
		if (servers == null || servers.isEmpty()) {
			throw new RuntimeException(
					"No DRPC servers configured for topology");
		}
		if (numTasks < servers.size()) {
			for (String s : servers) {
				_clients.add(new DRPCInvocationsClient(s, port));
			}
		} else {
			int i = index % servers.size();
			_clients.add(new DRPCInvocationsClient(servers.get(i), port));
		}
	}

}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
private static Map<Group, String> genBoltIds(Collection<Group> groups) {
    Map<Group, String> ret = new HashMap();
    int ctr = 0;
    for(Group g: groups) {
        if(!isSpoutGroup(g)) {
            List<String> name = new ArrayList();
            name.add("b");
            name.add("" + ctr);
            String groupName = getGroupName(g);
            if(groupName!=null && !groupName.isEmpty()) {
                name.add(getGroupName(g));                
            }
            ret.put(g, Utils.join(name, "-"));
            ctr++;
        }
    }
    return ret;
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
private boolean finishBatch(TrackedBatch tracked, Tuple finishTuple) {
    boolean success = true;
    try {
        _bolt.finishBatch(tracked.info);
        String stream = COORD_STREAM(tracked.info.batchGroup);
        for(Integer task: tracked.condition.targetTasks) {
            _collector.emitDirect(task, stream, finishTuple, new Values(tracked.info.batchId, Utils.get(tracked.taskEmittedTuples, task, 0)));
        }
        if(tracked.delayedAck!=null) {
            _collector.ack(tracked.delayedAck);
            tracked.delayedAck = null;
        }
    } catch(FailedException e) {
        failBatch(tracked, e);
        success = false;
    }
    _batches.remove(tracked.info.batchId.getId());
    return success;
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
public static void main(String[] args) throws Exception {
  TopologyBuilder builder = new TopologyBuilder();

  builder.setSpout("word", new TestWordSpout(), 10);
  builder.setBolt("exclaim1", new ExclamationBolt(), 3).shuffleGrouping("word");
  builder.setBolt("exclaim2", new ExclamationBolt(), 2).shuffleGrouping("exclaim1");

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

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

    StormSubmitter.submitTopologyWithProgressBar(args[0], conf, builder.createTopology());
  }
  else {

    LocalCluster cluster = new LocalCluster();
    cluster.submitTopology("test", conf, builder.createTopology());
    Utils.sleep(10000);
    cluster.killTopology("test");
    cluster.shutdown();
  }
}
 

import backtype.storm.utils.Utils; //導入依賴的package包/類
@Test
public void testExecuteMultipleStreams() {
	int numberOfAttributes = 1 + this.r.nextInt(10);
	String[] streamIds = new String[] {Utils.DEFAULT_STREAM_ID, "myStreamId"};
	RandomSpout spout = new RandomSpout(numberOfAttributes, 100, streamIds);
	
	TestSpoutOutputCollector collector = new TestSpoutOutputCollector();
	spout.open(null, null, new SpoutOutputCollector(collector));
	
	for(int i = 0; i < 50; ++i) {
		spout.nextTuple();
		for(String stream : streamIds) {
			Assert.assertTrue(collector.output.get(stream).size() == i + 1); // size of result
			Assert.assertTrue(collector.output.get(stream).get(i).size() == numberOfAttributes);
			for(int j = 0; j < numberOfAttributes; ++j) {
				Assert.assertTrue(0 < ((Integer)collector.output.get(stream).get(i).get(j)).intValue());
				Assert.assertTrue(100 >= ((Integer)collector.output.get(stream).get(i).get(j)).intValue());
			}
		}
	}
	
}