package storm.starter;
import backtype.storm.Config;
import backtype.storm.LocalCluster;
import backtype.storm.testing.FeederSpout;
import backtype.storm.topology.TopologyBuilder;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Values;
import backtype.storm.utils.Utils;
import storm.starter.bolt.SingleJoinBolt;
public class SingleJoinExample {
public static void main(String[] args) {
FeederSpout genderSpout = new FeederSpout(new Fields("id", "gender"));
FeederSpout ageSpout = new FeederSpout(new Fields("id", "age"));
TopologyBuilder builder = new TopologyBuilder();
builder.setSpout("gender", genderSpout);
builder.setSpout("age", ageSpout);
builder.setBolt("join", new SingleJoinBolt(new Fields("gender", "age")))
.fieldsGrouping("gender", new Fields("id"))
.fieldsGrouping("age", new Fields("id"));
Config conf = new Config();
conf.setDebug(true);
LocalCluster cluster = new LocalCluster();
cluster.submitTopology("join-example", conf, builder.createTopology());
for(int i=0; i<10; i++) {
String gender;
if(i % 2 == 0) {
gender = "male";
} else {
gender = "female";
}
genderSpout.feed(new Values(i, gender));
}
for(int i=9; i>=0; i--) {
ageSpout.feed(new Values(i, i+20));
}
Utils.sleep(2000);
cluster.shutdown();
}
}