<dependency>
<groupId>org.apache.storm</groupId>
<artifactId>storm-jdbc</artifactId>
<version>1.1.1</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
package com.waiting;
import org.apache.storm.Config;
import org.apache.storm.LocalCluster;
import org.apache.storm.jdbc.bolt.JdbcInsertBolt;
import org.apache.storm.jdbc.common.Column;
import org.apache.storm.jdbc.common.ConnectionProvider;
import org.apache.storm.jdbc.common.HikariCPConnectionProvider;
import org.apache.storm.jdbc.common.JdbcClient;
import org.apache.storm.jdbc.mapper.JdbcMapper;
import org.apache.storm.jdbc.mapper.SimpleJdbcMapper;
import org.apache.storm.shade.com.google.common.collect.Lists;
import org.apache.storm.shade.com.google.common.collect.Maps;
import org.apache.storm.shade.org.eclipse.jetty.io.Connection;
import org.apache.storm.spout.SpoutOutputCollector;
import org.apache.storm.task.OutputCollector;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.topology.OutputFieldsDeclarer;
import org.apache.storm.topology.TopologyBuilder;
import org.apache.storm.topology.base.BaseRichBolt;
import org.apache.storm.topology.base.BaseRichSpout;
import org.apache.storm.tuple.Fields;
import org.apache.storm.tuple.ITuple;
import org.apache.storm.tuple.Tuple;
import org.apache.storm.tuple.Values;
import org.apache.storm.utils.Utils;
import java.io.Serializable;
import java.sql.Types;
import java.util.*;
public class LocalWordCountJDBCStormTopology {
public static class DataSourceSpout extends BaseRichSpout {
private SpoutOutputCollector collector;
@Override
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
this.collector = collector;
}
public static final String[] words = new String[]{"apple", "orange", "pineapple", "bannaer"};
@Override
public void nextTuple() {
Random random = new Random();
String word = words[random.nextInt(words.length)];
this.collector.emit(new Values(word));
System.out.println("word:" + word);
Utils.sleep(1000);
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("line")
);
}
}
public static class SplitBolt extends BaseRichBolt{
private OutputCollector collector;
@Override
public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
this.collector = collector;
}
@Override
public void execute(Tuple input) {
String word = input.getStringByField("line");
this.collector.emit(new Values(word));
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("word"));
}
}
public static class CountBolt extends BaseRichBolt{
private OutputCollector collector;
@Override
public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
this.collector = collector;
}
Map<String, Integer> map = new HashMap<String, Integer>();
@Override
public void execute(Tuple input) {
String word = input.getStringByField("word");
Integer count = map.get(word);
if(count == null){
count = 0;
}
count ++;
map.put(word, count);
this.collector.emit(new Values(word, map.get(word)));
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("word", "count"));
}
}
public static class MysqlCountBolt extends BaseRichBolt{
private OutputCollector collector;
private JdbcClient jdbcClient;
private ConnectionProvider connectionProvider;
public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
this.collector = collector;
Map hikariConfigMap = Maps.newHashMap();
hikariConfigMap.put("dataSourceClassName","com.mysql.jdbc.jdbc2.optional.MysqlDataSource");
hikariConfigMap.put("dataSource.url", "jdbc:mysql://localhost/wordcount");
hikariConfigMap.put("dataSource.user","root");
hikariConfigMap.put("dataSource.password","test");
connectionProvider = new HikariCPConnectionProvider(hikariConfigMap);
//对数据库连接池进行初始化
connectionProvider.prepare();
jdbcClient = new JdbcClient(connectionProvider, 30);
}
Map<String,Integer> map = new HashMap<String,Integer>();
public void execute(Tuple input) {
String word = input.getStringByField("word");
Integer count = input.getIntegerByField("count");
List<Column> list = new ArrayList();
list.add(new Column("word", word, Types.VARCHAR));
List<List<Column>> select = jdbcClient.select("select word from wordcount where word = ?",list);
Long n = select.stream().count();
if(n>=1){
//update
jdbcClient.executeSql("update wordcount set count = "+count+" where word = '"+word+"'");
}else{
//insert
jdbcClient.executeSql("insert into wordcount values( '"+word+"',"+count+")");
}
}
public void declareOutputFields(OutputFieldsDeclarer declarer) {
// declarer.declare(new Fields("word","count"));
}
@Override
public void cleanup() {
connectionProvider.cleanup();
}
}
public static void main(String[] args){
TopologyBuilder builder = new TopologyBuilder();
builder.setSpout("DataSourceSpout", new DataSourceSpout());
builder.setBolt("SplitBolt", new SplitBolt()).shuffleGrouping("DataSourceSpout");
builder.setBolt("CountBolt", new CountBolt()).shuffleGrouping("SplitBolt");
// Map hikariConfigMap = Maps.newHashMap();
// hikariConfigMap.put("dataSourceClassName","com.mysql.jdbc.jdbc2.optional.MysqlDataSource");
// hikariConfigMap.put("dataSource.url", "jdbc:mysql://localhost/wordcount");
// hikariConfigMap.put("dataSource.user","root");
// hikariConfigMap.put("dataSource.password","test");
// ConnectionProvider connectionProvider = new HikariCPConnectionProvider(hikariConfigMap);
//
// String tableName = "wordcount";
// JdbcMapper simpleJdbcMapper = new SimpleJdbcMapper(tableName, connectionProvider);
//
// JdbcInsertBolt userPersistanceBolt = new JdbcInsertBolt(connectionProvider, simpleJdbcMapper)
// .withTableName(tableName)
// .withQueryTimeoutSecs(30);
builder.setBolt("MysqlCountBolt", new MysqlCountBolt()).shuffleGrouping("CountBolt");
LocalCluster cluster = new LocalCluster();
cluster.submitTopology("LocalWordCountStormTopology", new Config(), builder.createTopology());
}
}
4531
原文
http://www.waitingfy.com/archives/4531