随手尝试了一下StreamID的的用法。留个笔记。

==数据样例==

{

    "Address": "小桥镇小桥中学对面",

    "CityCode": "511300",

    "CountyCode": "511322",

    "EnterpriseCode": "YUNDA",

    "MailNo": "667748320345",

    "Mobile": "183****5451",

    "Name": "王***",

    "ProvCode": "510000",

    "Weight": "39"

}

==拓扑结构==

==程序源码==

<Spout1>

package test;

import com.alibaba.fastjson.JSONObject;

import common.constants.Constants;

import common.simulate.DataRandom;

import org.apache.storm.spout.SpoutOutputCollector;

import org.apache.storm.task.TopologyContext;

import org.apache.storm.topology.OutputFieldsDeclarer;

import org.apache.storm.topology.base.BaseRichSpout;

import org.apache.storm.tuple.Fields;

import org.apache.storm.tuple.Values;

import java.util.Map;

public class Spout1 extends BaseRichSpout {

    private SpoutOutputCollector _collector = null;

    private DataRandom _dataRandom = null;

    private int _timeInterval = 1000;

    @Override

    public void declareOutputFields(OutputFieldsDeclarer declarer) {

        declarer.declareStream("Stream1", new Fields("json"));

        declarer.declareStream("Stream2", new Fields("json"));

    }

    @Override

    public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {

        _collector = collector;

        _dataRandom = DataRandom.getInstance();

        if (conf.containsKey(Constants.SpoutInterval)) {

            _timeInterval = Integer.valueOf((String) conf.get(Constants.SpoutInterval));

        }

    }

    @Override

    public void nextTuple() {

        try {

            Thread.sleep(_timeInterval);

        } catch (InterruptedException e) {

            e.printStackTrace();

        }

        JSONObject jsonObject = _dataRandom.getRandomExpressData();

        System.out.print("[---Spout1---]jsonObject=" + jsonObject + "\n");

        _collector.emit("Stream1", new Values(jsonObject.toJSONString()));

        _collector.emit("Stream2", new Values(jsonObject.toJSONString()));

    }

}

<CountBolt1>

package test;

import com.alibaba.fastjson.JSONObject;

import common.constants.Constants;

import org.apache.storm.task.OutputCollector;

import org.apache.storm.task.TopologyContext;

import org.apache.storm.topology.OutputFieldsDeclarer;

import org.apache.storm.topology.base.BaseRichBolt;

import org.apache.storm.tuple.Fields;

import org.apache.storm.tuple.Tuple;

import org.apache.storm.tuple.Values;

import java.util.HashMap;

import java.util.Map;

public class CountBolt1 extends BaseRichBolt {

    private OutputCollector _collector = null;

    private int taskId = 0;

    private Map<String, Integer> _map = new HashMap<>();

    @Override

    public void declareOutputFields(OutputFieldsDeclarer declarer) {

        declarer.declareStream("Stream3", new Fields("company", "count"));

    }

    @Override

    public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {

        _collector = collector;

        taskId = context.getThisTaskId();

    }

    @Override

    public void execute(Tuple input) {

        String str = input.getStringByField("json");

        JSONObject jsonObject = JSONObject.parseObject(str);

        String company = jsonObject.getString(Constants.EnterpriseCode);

        int count = 0;

        if (_map.containsKey(company)) {

            count = _map.get(company);

        }

        count++;

        _map.put(company, count);

        _collector.emit("Stream3", new Values(company, count));

        System.out.print("[---CountBolt1---]" +

                "taskId=" + taskId + ", company=" + company + ", count=" + count + "\n");

    }

}

<CountBolt2>

package test;

import com.alibaba.fastjson.JSONObject;

import common.constants.Constants;

import org.apache.storm.task.OutputCollector;

import org.apache.storm.task.TopologyContext;

import org.apache.storm.topology.OutputFieldsDeclarer;

import org.apache.storm.topology.base.BaseRichBolt;

import org.apache.storm.tuple.Fields;

import org.apache.storm.tuple.Tuple;

import org.apache.storm.tuple.Values;

import java.util.HashMap;

import java.util.Map;

import java.util.UUID;

public class CountBolt2 extends BaseRichBolt {

    private OutputCollector _collector = null;

    private int _taskId = 0;

    private Map<String, Integer> _map = new HashMap<>();

    @Override

    public void prepare(Map map, TopologyContext topologyContext, OutputCollector outputCollector) {

        _collector = outputCollector;

        _taskId = topologyContext.getThisTaskId();

    }

    @Override

    public void execute(Tuple tuple) {

        String str = tuple.getStringByField("json");

        JSONObject jsonObject = JSONObject.parseObject(str);

        String prov = jsonObject.getString(Constants.ProvCode);

        int count = 0;

        if (_map.containsKey(prov)) {

            count = _map.get(prov);

        }

        count++;

        _map.put(prov, count);

        _collector.emit("Stream4", new Values(prov, count, UUID.randomUUID()));

        System.out.print("[---CountBolt2---]" +

                "taskId=" + _taskId + ", prov=" + prov + ", count=" + count + "\n");

    }

    @Override

    public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {

        outputFieldsDeclarer.declareStream("Stream4", new Fields("prov", "count", "random"));

    }

}

<CountBolt3>

package test;

import com.alibaba.fastjson.JSONObject;

import common.constants.Constants;

import org.apache.storm.task.OutputCollector;

import org.apache.storm.task.TopologyContext;

import org.apache.storm.topology.OutputFieldsDeclarer;

import org.apache.storm.topology.base.BaseRichBolt;

import org.apache.storm.tuple.Fields;

import org.apache.storm.tuple.Tuple;

import org.apache.storm.tuple.Values;

import java.util.HashMap;

import java.util.Map;

import java.util.UUID;

public class CountBolt3 extends BaseRichBolt {

    private OutputCollector _collector = null;

    private int _taskId = 0;

    private Map<String, Integer> _map = new HashMap<>();

    @Override

    public void prepare(Map map, TopologyContext topologyContext, OutputCollector outputCollector) {

        _collector = outputCollector;

        _taskId = topologyContext.getThisTaskId();

    }

    @Override

    public void execute(Tuple tuple) {

        String str = tuple.getStringByField("json");

        JSONObject jsonObject = JSONObject.parseObject(str);

        String city = jsonObject.getString(Constants.CityCode);

        int count = 0;

        if (_map.containsKey(city)) {

            count = _map.get(city);

        }

        count++;

        _map.put(city, count);

        _collector.emit("Stream4", new Values(city, count));

        System.out.print("[---CountBolt3---]" +

                "taskId=" + _taskId + ", city=" + city + ", count=" + count + "\n");

    }

    @Override

    public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {

        outputFieldsDeclarer.declareStream("Stream4", new Fields("city", "count"));

    }

}

<TopBolt>

package test;

import org.apache.storm.task.OutputCollector;

import org.apache.storm.task.TopologyContext;

import org.apache.storm.topology.OutputFieldsDeclarer;

import org.apache.storm.topology.base.BaseRichBolt;

import org.apache.storm.tuple.Tuple;

import java.util.List;

import java.util.Map;

public class TopBolt extends BaseRichBolt {

    @Override

    public void prepare(Map map, TopologyContext topologyContext, OutputCollector outputCollector) {

    }

    @Override

    public void execute(Tuple tuple) {

        System.out.print("[---TopBolt---]StreamID=" + tuple.getSourceStreamId() + "\n");

        List<Object> values = tuple.getValues();

        for(Object value : values) {

            System.out.print("[---TopBolt---]value=" + value + "\n");

        }

    }

    @Override

    public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {

    }

}

<TestTopology>

package test;

import org.apache.storm.Config;

import org.apache.storm.LocalCluster;

import org.apache.storm.StormSubmitter;

import org.apache.storm.generated.AlreadyAliveException;

import org.apache.storm.generated.AuthorizationException;

import org.apache.storm.generated.InvalidTopologyException;

import org.apache.storm.topology.TopologyBuilder;

import org.apache.storm.tuple.Fields;

public class TestTopology {

    public static void main(String[] args)

            throws InvalidTopologyException, AuthorizationException, AlreadyAliveException {

        TopologyBuilder builder = new TopologyBuilder();

        builder.setSpout("Spout1", new Spout1());

        builder.setBolt("Count1", new CountBolt1()).shuffleGrouping("Spout1", "Stream1");

        builder.setBolt("Count2", new CountBolt2()).shuffleGrouping("Spout1", "Stream2");

        builder.setBolt("Count3", new CountBolt3()).shuffleGrouping("Spout1", "Stream2");

        builder.setBolt("Top", new TopBolt())

                .fieldsGrouping("Count1", "Stream3", new Fields("company"))

                .fieldsGrouping("Count2", "Stream4", new Fields("prov"))

                .fieldsGrouping("Count3", "Stream4", new Fields("city"));

        Config config = new Config();

        config.setNumWorkers(1);

        config.put(common.constants.Constants.SpoutInterval, args[1]);

        if (Boolean.valueOf(args[0])) {

            StormSubmitter.submitTopology("TestTopology1", config, builder.createTopology());

        } else {

            LocalCluster localCluster = new LocalCluster();

            localCluster.submitTopology("TestTopology1", config, builder.createTopology());

        }

    }

}

==结果日志==

[---Spout1---]jsonObject={"CityCode":"511300","CountyCode":"511322","Address":"小桥镇小桥中学对面","MailNo":"667748320345","ProvCode":"510000","Mobile":"183****5451","EnterpriseCode":"YUNDA","Weight":"39","Name":"王***"}

[---CountBolt1---]taskId=1, company=YUNDA, count=1

[---CountBolt3---]taskId=3, city=511300, count=1

[---CountBolt2---]taskId=2, prov=510000, count=1

[---TopBolt---]StreamID=Stream4

[---TopBolt---]value=510000

[---TopBolt---]value=1

[---TopBolt---]value=99bd1cdb-d5c1-4ac8-b1a1-a4cfffb5a616

[---TopBolt---]StreamID=Stream4

[---TopBolt---]value=511300

[---TopBolt---]value=1

[---TopBolt---]StreamID=Stream3

[---TopBolt---]value=YUNDA

[---TopBolt---]value=1

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