adapter.TwitterLocationAdapter.java Source code

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Here is the source code for adapter.TwitterLocationAdapter.java

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/**
 * 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 adapter;

import java.io.File;
import java.io.FileInputStream;

import java.util.Properties;
import java.util.concurrent.LinkedBlockingQueue;

import org.apache.s4.base.Event;
import org.apache.s4.core.adapter.AdapterApp;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import eda.Tweet;

import twitter4j.FilterQuery;
import twitter4j.StallWarning;
import twitter4j.Status;
import twitter4j.StatusDeletionNotice;
import twitter4j.StatusListener;
import twitter4j.TwitterStream;
import twitter4j.TwitterStreamFactory;
import twitter4j.conf.ConfigurationBuilder;

//import utilities.Reader;

public class TwitterLocationAdapter extends AdapterApp implements Runnable {

    private static Logger logger = LoggerFactory.getLogger(TwitterLocationAdapter.class);

    private LinkedBlockingQueue<Status> messageQueue = new LinkedBlockingQueue<Status>();
    private Thread t;

    public int eventCount = 0;

    @Override
    protected void onInit() {
        logger.info("TwitterAllAdapter");
        t = new Thread(this);
        super.onInit();
    }

    public void connectAndRead() throws Exception {
        ConfigurationBuilder cb = new ConfigurationBuilder();
        Properties twitterProperties = new Properties();
        File twitter4jPropsFile = new File("../twitter4j.properties");
        if (!twitter4jPropsFile.exists()) {
            logger.error("Cannot find twitter4j.properties file in this location :[{}]",
                    twitter4jPropsFile.getAbsolutePath());
            return;
        }

        twitterProperties.load(new FileInputStream(twitter4jPropsFile));

        cb = new ConfigurationBuilder();

        cb.setOAuthConsumerKey(twitterProperties.getProperty("oauth.consumerKey"));
        cb.setOAuthConsumerSecret(twitterProperties.getProperty("oauth.consumerSecret"));
        cb.setOAuthAccessToken(twitterProperties.getProperty("oauth.accessToken"));
        cb.setOAuthAccessTokenSecret(twitterProperties.getProperty("oauth.accessTokenSecret"));

        cb.setDebugEnabled(false);
        cb.setPrettyDebugEnabled(false);
        cb.setIncludeMyRetweetEnabled(false);

        TwitterStream twitterStream = new TwitterStreamFactory(cb.build()).getInstance();

        StatusListener statusListener = new StatusListener() {
            @Override
            public void onException(Exception ex) {
            }

            @Override
            public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
            }

            @Override
            public void onStatus(Status status) {
                messageQueue.add(status);
            }

            @Override
            public void onScrubGeo(long userId, long upToStatusId) {
            }

            @Override
            public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {
            }

            @Override
            public void onStallWarning(StallWarning arg0) {
            }

        };

        FilterQuery fq = new FilterQuery();
        // Posiciones geogrficas, esas dos coordenadas son el vrtice superior izquierda e inferior derecho
        // de un rectangulo, de tal manera de analizar solo una parte geografica
        double position[][] = { { 0.0, 0.0 }, { 0.0, 0.0 } };
        fq.locations(position);

        twitterStream.addListener(statusListener);
        twitterStream.filter(fq);
    }

    @Override
    protected void onStart() {

        try {
            t.start();
            connectAndRead();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public void run() {

        while (true) {
            try {
                Status status = this.messageQueue.take();

                Event event = new Event();

                Tweet tweet = new Tweet(status.getId(), status.getText(), status.getCreatedAt(), status.getPlace(),
                        status.getUser().getScreenName(), status.getUser().getLang(),
                        status.getUser().getFollowersCount(), status.getUser().getFriendsCount(),
                        status.getHashtagEntities(), status.getFavoriteCount(), status.getRetweetCount(),
                        status.getGeoLocation());

                eventCount++;
                // cantReplicas: Cantidad de PEs que se quieren generar para el
                // proximo operador
                // Nota: recuerden que la topologa no necesariamente deba ser
                // de este estilo
                // tambin poda ser por un hash
                int cantReplicas = 10;
                event.put("levelTweet", Integer.class, eventCount % cantReplicas);
                event.put("id", Integer.class, eventCount);
                event.put("tweet", Tweet.class, tweet);

                getRemoteStream().put(event);

            } catch (Exception e) {
                logger.error("Error: " + e);
                logger.error("Error al crear evento");
            }

        }
    }

}