Storm Trident 项目

事务：运用IPartitionedTridentSpout
DRPC：Web端通过DRPC获得结果数据
topN：按销售额排行
基于Hbase存储的Trident state：支持Topo重启时不丢数据，也可支撑Web端读数据

数据获得实现 
通过开源Storm-kafka项目提供  
采用Storm-kafka 项目中提供的TransactionalTridentKafkaSpout
  
开发思路
1、业务逻辑处理，bolt中实现；
2、数据落地格式可更加前台HighCharts的需要而定，有时需要特别为HighCharts的数据格式来存储落地数据，如项目三中就会这样。
采用内存+磁盘方式避免断电、重启等会造成数据丢失的问题。
3、必须前后台分离，有利于稳定性；
4、Web端开发思路相对简单，就是长链接读数据，推数据到HighCharts
5、HighCharts开发，很多实例及代码，可以现学现用。
 
优点：1、前台、后台分离，重启维护互不影响；
           2、Storm重启不会影响结果数据，不影响HighCharts图表展示；
           3、Tomcat重启不会影响数据处理；
           4、前台后台数据传输通过Hbase 或 DRPC，注意DRPC是通过服务访问，稳定性不如DB。



package cn.wh.trident;
import storm.kafka.BrokerHosts;
import storm.kafka.StringScheme;
import storm.kafka.ZkHosts;
import storm.kafka.trident.TransactionalTridentKafkaSpout;
import storm.kafka.trident.TridentKafkaConfig;
import storm.trident.TridentState;
import storm.trident.TridentTopology;
import storm.trident.operation.builtin.Count;
importstorm.trident.operation.builtin.FirstN;
import storm.trident.operation.builtin.MapGet;
import storm.trident.operation.builtin.Sum;
import storm.trident.testing.MemoryMapState;
import backtype.storm.Config;
import backtype.storm.LocalCluster;
import backtype.storm.LocalDRPC;
import backtype.storm.spout.SchemeAsMultiScheme;
import backtype.storm.tuple.Fields;
import backtype.storm.utils.Utils;
import cn.wh.storm.KafkaProperties;
 
publicclass TridentTopo {
    /**
     * @param args
     */
    publicstaticvoid main(String[] args) {
        BrokerHosts zkHosts = new ZkHosts(KafkaProperties.zkConnect);
        String topic = "track";
        TridentKafkaConfig config = new TridentKafkaConfig(zkHosts, topic);
       
        config.forceFromStart = false; //测试时用true，上线时必须改为false
        
        //输入格式
        config.scheme = new SchemeAsMultiScheme(new StringScheme());  
        config.fetchSizeBytes = 100 ;     //batch size
        LocalDRPC drpc = new LocalDRPC();
        TransactionalTridentKafkaSpout spout  = newTransactionalTridentKafkaSpout(config) ;
       
        TridentTopology topology = new TridentTopology() ;
        //销售额
        TridentState amtState = topology.newStream("spout", spout)
        .parallelismHint(3)
        .each(new Fields(StringScheme.STRING_SCHEME_KEY),new OrderSplit("\\t"), new Fields("order_id","order_amt","create_date","province_id"))
        .shuffle()
        .groupBy(new Fields("create_date","province_id"))
        .persistentAggregate(new MemoryMapState.Factory(), new Fields("order_amt"), new Sum(), new Fields("sum_amt"));
       
        topology.newDRPCStream("getOrderAmt", drpc)
        .each(new Fields("args"), new Split(" "), new Fields("arg"))
        .each(new Fields("arg"), new SplitBy("\\:"), new Fields("create_date","province_id"))
        .groupBy(new Fields("create_date","province_id"))
        .stateQuery(amtState, new Fields("create_date","province_id"), new MapGet(), new Fields("sum_amt"))
//      .applyAssembly(new FirstN(5, "sum_amt", true))
        ; 
        //订单数
        TridentState orderState = topology.newStream("orderSpout", spout)
        .parallelismHint(3)
        .each(new Fields(StringScheme.STRING_SCHEME_KEY),new OrderSplit("\\t"), new Fields("order_id","order_amt","create_date","province_id"))
        .shuffle()
        .groupBy(new Fields("create_date","province_id"))
        .persistentAggregate(new MemoryMapState.Factory(), new Fields("order_id"), new Count(), new Fields("order_num"));
       
        topology.newDRPCStream("getOrderNum", drpc)
        .each(new Fields("args"), new Split(" "), new Fields("arg"))
        .each(new Fields("arg"), new SplitBy("\\:"), new Fields("create_date","province_id"))
        .groupBy(new Fields("create_date","province_id"))
        .stateQuery(orderState, new Fields("create_date","province_id"), new MapGet(), new Fields("order_num"))
//      .applyAssembly(new FirstN(5, "order_num", true))
        ; 
        Config conf = new Config() ;
        conf.setDebug(false);
        LocalCluster cluster = new LocalCluster() ;
        cluster.submitTopology("myTopo", conf, topology.build());

        while(true){
//          System.err.println("销售额："+drpc.execute("getOrderAmt", "2014-08-19:1 2014-08-19:2 2014-08-19:3 2014-08-19:4 2014-08-19:5")) ;
            System.err.println("订单数："+drpc.execute("getOrderNum", "2014-08-19:1 2014-08-19:2 2014-08-19:3 2014-08-19:4 2014-08-19:5")) ;
            Utils.sleep(5000); 
        }
    }
}



DRPC方式基于hbase state方式
package cn.wh.stormtest;
import hbase.state.HBaseAggregateState;
import hbase.state.TridentConfig;
import kafka.productor.KafkaProperties;
import storm.kafka.BrokerHosts;
import storm.kafka.StringScheme;
import storm.kafka.ZkHosts;
import storm.kafka.trident.TransactionalTridentKafkaSpout;
import storm.kafka.trident.TridentKafkaConfig;
import storm.trident.TridentState;
import storm.trident.TridentTopology;
import storm.trident.operation.builtin.Count;
import storm.trident.operation.builtin.FilterNull;
import storm.trident.operation.builtin.FirstN;
import storm.trident.operation.builtin.MapGet;
import storm.trident.operation.builtin.Sum;
import storm.trident.state.StateFactory;
import storm.trident.testing.MemoryMapState;
import backtype.storm.Config;
import backtype.storm.LocalCluster;
import backtype.storm.LocalDRPC;
import backtype.storm.StormSubmitter;
import backtype.storm.generated.AlreadyAliveException;
import backtype.storm.generated.InvalidTopologyException;
import backtype.storm.generated.StormTopology;
import backtype.storm.spout.SchemeAsMultiScheme;
import backtype.storm.tuple.Fields;
import backtype.storm.utils.Utils;
 
public class TridentTopo {
 
    public static StormTopology builder(LocalDRPC drpc)
    {
        TridentConfig tridentConfig = new TridentConfig("state");
        StateFactory state = HBaseAggregateState.transactional(tridentConfig);
       
        BrokerHosts zkHosts = new ZkHosts(KafkaProperties.zkConnect);
        String topic = "track";
        TridentKafkaConfig config = new TridentKafkaConfig(zkHosts, topic);
        config.forceFromStart = false; //测试时用true，上线时必须改为false
        config.scheme = new SchemeAsMultiScheme(new StringScheme());
        config.fetchSizeBytes = 100 ;//batch size
       
        TransactionalTridentKafkaSpout spout  = new TransactionalTridentKafkaSpout(config) ;
       
        TridentTopology topology = new TridentTopology() ;
        //销售额
        TridentState amtState = topology.newStream("spout", spout)
        .parallelismHint(3)
        .each(new Fields(StringScheme.STRING_SCHEME_KEY),new OrderAmtSplit("\\t"), new Fields("order_id","order_amt","create_date","province_id","cf"))
        .shuffle()
        .groupBy(new Fields("create_date","cf","province_id"))
        .persistentAggregate(state, new Fields("order_amt"), new Sum(), new Fields("sum_amt"));
//      .persistentAggregate(new MemoryMapState.Factory(), new Fields("order_amt"), new Sum(), new Fields("sum_amt"));
       
        topology.newDRPCStream("getOrderAmt", drpc)
        .each(new Fields("args"), new Split(" "), new Fields("arg"))
        .each(new Fields("arg"), new SplitBy("\\:"), new Fields("create_date","cf","province_id"))
        .groupBy(new Fields("create_date","cf","province_id"))
        .stateQuery(amtState, new Fields("create_date","cf","province_id"), new MapGet(), new Fields("sum_amt"))
        .each(new Fields("sum_amt"),new FilterNull())
        .applyAssembly(new FirstN(5, "sum_amt", true))
        ;
       
        //订单数
        TridentState orderState = topology.newStream("orderSpout", spout)
        .parallelismHint(3)
        .each(new Fields(StringScheme.STRING_SCHEME_KEY),new OrderNumSplit("\\t"), new Fields("order_id","order_amt","create_date","province_id","cf"))
        .shuffle()
        .groupBy(new Fields("create_date","cf","province_id"))
        .persistentAggregate(state, new Fields("order_id"), new Count(), new Fields("order_num"));
//      .persistentAggregate(new MemoryMapState.Factory(), new Fields("order_id"), new Count(), new Fields("order_num"));
       
        topology.newDRPCStream("getOrderNum", drpc)
        .each(new Fields("args"), new Split(" "), new Fields("arg"))
        .each(new Fields("arg"), new SplitBy("\\:"), new Fields("create_date","cf","province_id"))
        .groupBy(new Fields("create_date","cf","province_id"))
        .stateQuery(orderState, new Fields("create_date","cf","province_id"), new MapGet(), new Fields("order_num"))
        .each(new Fields("order_num"),new FilterNull())
//      .applyAssembly(new FirstN(5, "order_num", true))
        ;
        return topology.build() ;
    }
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        LocalDRPC drpc = new LocalDRPC();
        Config conf = new Config() ;
        conf.setNumWorkers(5);
        conf.setDebug(false);
        if (args.length > 0) {
            try {
                StormSubmitter.submitTopology(args[0], conf, builder(null));
            } catch (AlreadyAliveException e) {
                e.printStackTrace();
            } catch (InvalidTopologyException e) {
                e.printStackTrace();
            }
        }else{
            LocalCluster localCluster = new LocalCluster();
            localCluster.submitTopology("mytopology", conf, builder(drpc));
        }
//      Utils.sleep(60000);
//      while (true) {
//          System.err.println("销售额："+drpc.execute("getOrderAmt", "2014-09-13:cf:amt_3 2014-09-13:cf:amt_2 2014-09-13:cf:amt_1 2014-09-13:cf:amt_7 2014-09-13:cf:amt_6 2014-09-13:cf:amt_5 2014-09-13:cf:amt_4 2014-09-13:cf:amt_8")) ;
//          Utils.sleep(5000);
//      }
        /**
         * [["2014-08-19:1 2014-08-19:2 2014-08-19:3 2014-08-19:4 2014-08-19:5","2014-08-19:1","2014-08-19","1",821.9000000000001],
         * ["2014-08-19:1 2014-08-19:2 2014-08-19:3 2014-08-19:4 2014-08-19:5","2014-08-19:2","2014-08-19","2",631.3000000000001],
         * ["2014-08-19:1 2014-08-19:2 2014-08-19:3 2014-08-19:4 2014-08-19:5","2014-08-19:3","2014-08-19","3",240.7],
         * ["2014-08-19:1 2014-08-19:2 2014-08-19:3 2014-08-19:4 2014-08-19:5","2014-08-19:4","2014-08-19","4",340.4],
         * ["2014-08-19:1 2014-08-19:2 2014-08-19:3 2014-08-19:4 2014-08-19:5","2014-08-19:5","2014-08-19","5",460.8]]
         */
       
       
    }
 
}
 


----------------------------DRPC Client-------------
import backtype.storm.LocalDRPC;
import backtype.storm.utils.DRPCClient;
import backtype.storm.utils.Utils;
 
public class TridentDRPCclient {
    public static void main(String[] args) {
       
        DRPCClient client = new DRPCClient("192.168.1.107", 3772);
//      LocalDRPC client = new LocalDRPC(); 
        try {
                while (true)
                {
                    System.err.println("销售额："+client.execute("getOrderAmt", "2014-09-13:cf:amt_5 2014-09-13:cf:amt_8")) ;
                    System.err.println("订单数："+client.execute("getOrderNum", "2014-09-13:cf:amt_1 2014-09-13:cf:amt_2")) ;
                    Utils.sleep(5000);
                }
            } catch (Exception e) {
                e.printStackTrace() ;
            }
       
    }
}