/*
* Sifarish: Recommendation Engine
* Author: Pranab Ghosh
*
* Licensed under the Apache License, Version 2.0 (the "License"); you
* may not use this file except in compliance with the License. You may
* obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package org.sifarish.realtime;
import java.io.FileInputStream;
import java.util.Properties;
import org.chombo.util.ConfigUtility;
import backtype.storm.Config;
import backtype.storm.StormSubmitter;
import backtype.storm.topology.TopologyBuilder;
import backtype.storm.tuple.Fields;
/**
* Storm topology for real time recommendation
* @author pranab
*
*/
public class RecommenderTopology {
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
String topologyName = args[0];
String configFilePath = args[1];
if (args.length != 2) {
throw new IllegalArgumentException("Need two arguments: topology name and config file path");
}
FileInputStream fis = new FileInputStream(configFilePath);
Properties configProps = new Properties();
configProps.load(fis);
//initialize config
Config conf = new Config();
conf.setDebug(true);
for (Object key : configProps.keySet()){
String keySt = key.toString();
String val = configProps.getProperty(keySt);
conf.put(keySt, val);
}
//spout
TopologyBuilder builder = new TopologyBuilder();
int spoutThreads = ConfigUtility.getInt(configProps, "spout.threads", 1);
RedisSpout spout = new RedisSpout();
spout.withTupleFields(RecommenderBolt.USER_ID, RecommenderBolt.SESSION_ID,
RecommenderBolt.ITEM_ID, RecommenderBolt.EVENT_ID, RecommenderBolt.TS_ID);
builder.setSpout("recommenderRedisSpout", spout, spoutThreads);
//bolt
RecommenderBolt bolt = new RecommenderBolt();
int boltThreads = ConfigUtility.getInt(configProps, "bolt.threads", 1);
builder.
setBolt("recommenderBolt", bolt, boltThreads).
fieldsGrouping("recommenderRedisSpout", new Fields(RecommenderBolt.USER_ID));
//submit topology
int numWorkers = ConfigUtility.getInt(configProps, "num.workers", 1);
int maxSpoutPending = ConfigUtility.getInt(configProps, "max.spout.pending", 1000);
int maxTaskParalleism = ConfigUtility.getInt(configProps, "max.task.parallelism", 100);
conf.setNumWorkers(numWorkers);
conf.setMaxSpoutPending(maxSpoutPending);
conf.setMaxTaskParallelism(maxTaskParalleism);
StormSubmitter.submitTopology(topologyName, conf, builder.createTopology());
}
}