大数据处理框架之Strom：redis storm 整合

storm 引入redis ,主要是使用redis缓存库暂存storm的计算结果，然后redis供其他应用调用取出数据。

新建maven工程

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>storm07</groupId>
  <artifactId>storm07</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>storm07</name>
  <url>http://maven.apache.org</url>
  <repositories>
        <!-- Repository where we can found the storm dependencies  -->
        <repository>
            <id>clojars.org</id>
            <url>http://clojars.org/repo</url>
        </repository>
  </repositories>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
    <dependency>
        <groupId>org.apache.storm</groupId>
        <artifactId>storm-core</artifactId>
        <version>0.9.2-incubating</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.1.1</version>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.1.1</version>
    </dependency>
    <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
        <version>2.7.2</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-slf4j-impl</artifactId>
        <version>2.0-beta9</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-1.2-api</artifactId>
        <version>2.0-beta9</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>log4j-over-slf4j</artifactId>
        <version>1.7.10</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.10</version>
    </dependency>
  </dependencies>
    <build>
    <finalName>storm07</finalName>
   <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.4</version>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.1</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
        <!-- 单元测试 -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <configuration>
                <skip>true</skip>
                <includes>
                    <include>**/*Test*.java</include>
                </includes>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-source-plugin</artifactId>
            <version>2.1.2</version>
            <executions>
                <!-- 绑定到特定的生命周期之后，运行maven-source-pluin 运行目标为jar-no-fork -->
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>jar-no-fork</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
  </build>
</project>

Topology

package bhz.storm.redis.example;

import java.util.ArrayList;
import java.util.List;

import backtype.storm.Config;
import backtype.storm.LocalCluster;
import backtype.storm.generated.AlreadyAliveException;
import backtype.storm.generated.InvalidTopologyException;
import backtype.storm.topology.TopologyBuilder;

public class Topology {
    public static void main(String[] args) throws AlreadyAliveException, InvalidTopologyException {

        TopologyBuilder builder = new TopologyBuilder();

        List<String> zks = new ArrayList<String>();
        zks.add("192.168.1.114");

        List<String> cFs = new ArrayList<String>();
        cFs.add("personal");
        cFs.add("company");

        // set the spout class
        builder.setSpout("spout", new SampleSpout(), 2);
        // set the bolt class
        builder.setBolt("bolt", new StormRedisBolt("192.168.1.114",6379), 2).shuffleGrouping("spout");

        Config conf = new Config();
        conf.setDebug(true);
        // create an instance of LocalCluster class for
        // executing topology in local mode.
        LocalCluster cluster = new LocalCluster();

        // StormRedisTopology is the name of submitted topology.
        cluster.submitTopology("StormRedisTopology", conf, builder.createTopology());
        try {
            Thread.sleep(10000);
        } catch (Exception exception) {
            System.out.println("Thread interrupted exception : " + exception);
        }
        // kill the StormRedisTopology
        cluster.killTopology("StormRedisTopology");
        // shutdown the storm test cluster
        cluster.shutdown();
}
}

spout

package bhz.storm.redis.example;

import java.util.HashMap;
import java.util.Map;
import java.util.Random;

import backtype.storm.spout.SpoutOutputCollector;
import backtype.storm.task.TopologyContext;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.topology.base.BaseRichSpout;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Values;

public class SampleSpout extends BaseRichSpout {
    private static final long serialVersionUID = 1L;
    private SpoutOutputCollector spoutOutputCollector;

    private static final Map<Integer, String> FIRSTNAMEMAP = new HashMap<Integer, String>();
    static {
        FIRSTNAMEMAP.put(0, "john");
        FIRSTNAMEMAP.put(1, "nick");
        FIRSTNAMEMAP.put(2, "mick");
        FIRSTNAMEMAP.put(3, "tom");
        FIRSTNAMEMAP.put(4, "jerry");
    }

    private static final Map<Integer, String> LASTNAME = new HashMap<Integer, String>();
    static {
        LASTNAME.put(0, "anderson");
        LASTNAME.put(1, "watson");
        LASTNAME.put(2, "ponting");
        LASTNAME.put(3, "dravid");
        LASTNAME.put(4, "lara");
    }

    private static final Map<Integer, String> COMPANYNAME = new HashMap<Integer, String>();
    static {
        COMPANYNAME.put(0, "abc");
        COMPANYNAME.put(1, "dfg");
        COMPANYNAME.put(2, "pqr");
        COMPANYNAME.put(3, "ecd");
        COMPANYNAME.put(4, "awe");
    }

    public void open(Map conf, TopologyContext context,
            SpoutOutputCollector spoutOutputCollector) {
        // Open the spout
        this.spoutOutputCollector = spoutOutputCollector;
    }

    public void nextTuple() {
        // Storm cluster repeatedly call this method to emit the continuous //
        // stream of tuples.
        final Random rand = new Random();
        // generate the random number from 0 to 4.
        int randomNumber = rand.nextInt(5);
        spoutOutputCollector.emit (new Values(FIRSTNAMEMAP.get(randomNumber),LASTNAME.get(randomNumber),COMPANYNAME.get(randomNumber)));
    }

    public void declareOutputFields(OutputFieldsDeclarer declarer) {
        // emit the field site.
        declarer.declare(new Fields("firstName","lastName","companyName"));
    }
}

StormRedisBolt

package bhz.storm.redis.example;

import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

import backtype.storm.task.TopologyContext;
import backtype.storm.topology.BasicOutputCollector;
import backtype.storm.topology.IBasicBolt;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.tuple.Tuple;

public class StormRedisBolt implements IBasicBolt{

    private static final long serialVersionUID = 2L;
    private RedisOperations redisOperations = null;
    private String redisIP = null;
    private int port;
    public StormRedisBolt(String redisIP, int port) {
        this.redisIP = redisIP;
        this.port = port;
    }

    public void execute(Tuple input, BasicOutputCollector collector) {
        Map<String, Object> record = new HashMap<String, Object>();
        //"firstName","lastName","companyName")
        record.put("firstName", input.getValueByField("firstName"));
        record.put("lastName", input.getValueByField("lastName"));
        record.put("companyName", input.getValueByField("companyName"));
        redisOperations.insert(record, UUID.randomUUID().toString());
    }

    public void declareOutputFields(OutputFieldsDeclarer declarer) {

    }

    public Map<String, Object> getComponentConfiguration() {
        return null;
    }

    public void prepare(Map stormConf, TopologyContext context) {
        redisOperations = new RedisOperations(this.redisIP, this.port);
    }

    public void cleanup() {

    }

}

package bhz.storm.redis.example;

import java.io.Serializable;
import java.util.Map;

import com.fasterxml.jackson.databind.ObjectMapper;

import redis.clients.jedis.Jedis;

public class RedisOperations implements Serializable {

    private static final long serialVersionUID = 1L;
    Jedis jedis = null;

    public RedisOperations(String redisIP, int port) {
        // Connecting to Redis on localhost
        jedis = new Jedis(redisIP, port);
    }

    public void insert(Map<String, Object> record, String id) {
        try {
            jedis.set(id, new ObjectMapper().writeValueAsString(record));
        } catch (Exception e) {
            System.out.println("Record not persist into datastore : ");
        }
    }
}