/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 storm.starter.spout;
import java.util.Map;
import java.util.concurrent.LinkedBlockingQueue;
import twitter4j.FilterQuery;
import twitter4j.StallWarning;
import twitter4j.Status;
import twitter4j.StatusDeletionNotice;
import twitter4j.StatusListener;
import twitter4j.TwitterStream;
import twitter4j.TwitterStreamFactory;
import twitter4j.auth.AccessToken;
import twitter4j.conf.ConfigurationBuilder;
import backtype.storm.Config;
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;
import backtype.storm.utils.Utils;
@SuppressWarnings("serial")
public class TwitterSampleSpout extends BaseRichSpout {
SpoutOutputCollector _collector;
LinkedBlockingQueue<Status> queue = null;
TwitterStream _twitterStream;
String consumerKey;
String consumerSecret;
String accessToken;
String accessTokenSecret;
String[] keyWords;
public TwitterSampleSpout(String consumerKey, String consumerSecret,
String accessToken, String accessTokenSecret, String[] keyWords) {
this.consumerKey = consumerKey;
this.consumerSecret = consumerSecret;
this.accessToken = accessToken;
this.accessTokenSecret = accessTokenSecret;
this.keyWords = keyWords;
}
public TwitterSampleSpout() {
// TODO Auto-generated constructor stub
}
@Override
public void open(Map conf, TopologyContext context,
SpoutOutputCollector collector) {
queue = new LinkedBlockingQueue<Status>(1000);
_collector = collector;
StatusListener listener = new StatusListener() {
@Override
public void onStatus(Status status) {
queue.offer(status);
}
@Override
public void onDeletionNotice(StatusDeletionNotice sdn) {
}
@Override
public void onTrackLimitationNotice(int i) {
}
@Override
public void onScrubGeo(long l, long l1) {
}
@Override
public void onException(Exception ex) {
}
@Override
public void onStallWarning(StallWarning arg0) {
// TODO Auto-generated method stub
}
};
TwitterStream twitterStream = new TwitterStreamFactory(
new ConfigurationBuilder().setJSONStoreEnabled(true).build())
.getInstance();
twitterStream.addListener(listener);
twitterStream.setOAuthConsumer(consumerKey, consumerSecret);
AccessToken token = new AccessToken(accessToken, accessTokenSecret);
twitterStream.setOAuthAccessToken(token);
if (keyWords.length == 0) {
twitterStream.sample();
}
else {
FilterQuery query = new FilterQuery().track(keyWords);
twitterStream.filter(query);
}
}
@Override
public void nextTuple() {
Status ret = queue.poll();
if (ret == null) {
Utils.sleep(50);
} else {
_collector.emit(new Values(ret));
}
}
@Override
public void close() {
_twitterStream.shutdown();
}
@Override
public Map<String, Object> getComponentConfiguration() {
Config ret = new Config();
ret.setMaxTaskParallelism(1);
return ret;
}
@Override
public void ack(Object id) {
}
@Override
public void fail(Object id) {
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("tweet"));
}
}