Example usage for twitter4j ConnectionLifeCycleListener ConnectionLifeCycleListener

List of usage examples for twitter4j ConnectionLifeCycleListener ConnectionLifeCycleListener

Introduction

In this page you can find the example usage for twitter4j ConnectionLifeCycleListener ConnectionLifeCycleListener.

Prototype

ConnectionLifeCycleListener

Source Link

Usage

From source file:ar.com.zauber.commons.social.twitter.impl.streaming.TweetFetcher.java

License:Apache License

/**
 * Creates the {@link TwitterStream}/*from w w  w  .ja  v a  2s  . c o  m*/
 * 
 * @param user
 * @param password
 * @return
 */
private TwitterStream createStream(final String user, final String password) {
    final TwitterStream stream = new TwitterStreamFactory().getInstance(new BasicAuthorization(user, password));

    stream.addListener(new StatusListener() {
        @Override
        public void onStatus(final Status status) {
            try {
                T t = transformer.transform(status);
                closure.execute(t);
            } catch (Throwable ex) {
                logger.error("Exception en onStatus", ex);
            }

        }

        @Override
        public void onException(final Exception e) {
            logger.error("Exception on TwitterStream", e);
        }

        @Override
        public void onTrackLimitationNotice(final int numberOfLimitedStatuses) {
            logger.warn("onTrackLimitationNotice: Number of limited " + "statuses: {}",
                    numberOfLimitedStatuses);
        }

        @Override
        public void onDeletionNotice(final StatusDeletionNotice statusDeletionNotice) {
            logger.warn("statusDeletionNotice: {}", statusDeletionNotice);
        }

        @Override
        public void onScrubGeo(final long userId, final long upToStatusId) {
            logger.warn("scrubGeo: {} {}", userId, upToStatusId);
        }
    });

    stream.addConnectionLifeCycleListener(new ConnectionLifeCycleListener() {
        @Override
        public void onDisconnect() {
            logger.warn("Disconnected from Twitter!");
        }

        @Override
        public void onConnect() {
        }

        @Override
        public void onCleanUp() {
        }
    });

    return stream;
}

From source file:druid.examples.twitter.TwitterSpritzerFirehoseFactory.java

License:Open Source License

@Override
public Firehose connect() throws IOException {
    final ConnectionLifeCycleListener connectionLifeCycleListener = new ConnectionLifeCycleListener() {
        @Override// w w  w.j a v  a  2s. c  o m
        public void onConnect() {
            log.info("Connected_to_Twitter");
        }

        @Override
        public void onDisconnect() {
            log.info("Disconnect_from_Twitter");
        }

        /**
         * called before thread gets cleaned up
         */
        @Override
        public void onCleanUp() {
            log.info("Cleanup_twitter_stream");
        }
    }; // ConnectionLifeCycleListener

    final TwitterStream twitterStream;
    final StatusListener statusListener;
    final int QUEUE_SIZE = 2000;
    /** This queue is used to move twitter events from the twitter4j thread to the druid ingest thread.   */
    final BlockingQueue<Status> queue = new ArrayBlockingQueue<Status>(QUEUE_SIZE);
    final LinkedList<String> dimensions = new LinkedList<String>();
    final long startMsec = System.currentTimeMillis();

    dimensions.add("htags");
    dimensions.add("lang");
    dimensions.add("utc_offset");

    //
    //   set up Twitter Spritzer
    //
    twitterStream = new TwitterStreamFactory().getInstance();
    twitterStream.addConnectionLifeCycleListener(connectionLifeCycleListener);
    statusListener = new StatusListener() { // This is what really gets called to deliver stuff from twitter4j
        @Override
        public void onStatus(Status status) {
            // time to stop?
            if (Thread.currentThread().isInterrupted()) {
                throw new RuntimeException("Interrupted, time to stop");
            }
            try {
                boolean success = queue.offer(status, 15L, TimeUnit.SECONDS);
                if (!success) {
                    log.warn("queue too slow!");
                }
            } catch (InterruptedException e) {
                throw new RuntimeException("InterruptedException", e);
            }
        }

        @Override
        public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {
            //log.info("Got a status deletion notice id:" + statusDeletionNotice.getStatusId());
        }

        @Override
        public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
            // This notice will be sent each time a limited stream becomes unlimited.
            // If this number is high and or rapidly increasing, it is an indication that your predicate is too broad, and you should consider a predicate with higher selectivity.
            log.warn("Got track limitation notice:" + numberOfLimitedStatuses);
        }

        @Override
        public void onScrubGeo(long userId, long upToStatusId) {
            //log.info("Got scrub_geo event userId:" + userId + " upToStatusId:" + upToStatusId);
        }

        @Override
        public void onException(Exception ex) {
            ex.printStackTrace();
        }

        @Override
        public void onStallWarning(StallWarning warning) {
            System.out.println("Got stall warning:" + warning);
        }
    };

    twitterStream.addListener(statusListener);
    twitterStream.sample(); // creates a generic StatusStream
    log.info("returned from sample()");

    return new Firehose() {

        private final Runnable doNothingRunnable = new Runnable() {
            public void run() {
            }
        };

        private long rowCount = 0L;
        private boolean waitIfmax = (maxEventCount < 0L);
        private final Map<String, Object> theMap = new HashMap<String, Object>(2);
        // DIY json parsing // private final ObjectMapper omapper = new ObjectMapper();

        private boolean maxTimeReached() {
            if (maxRunMinutes <= 0) {
                return false;
            } else {
                return (System.currentTimeMillis() - startMsec) / 60000L >= maxRunMinutes;
            }
        }

        private boolean maxCountReached() {
            return maxEventCount >= 0 && rowCount >= maxEventCount;
        }

        @Override
        public boolean hasMore() {
            if (maxCountReached() || maxTimeReached()) {
                return waitIfmax;
            } else {
                return true;
            }
        }

        @Override
        public InputRow nextRow() {
            // Interrupted to stop?
            if (Thread.currentThread().isInterrupted()) {
                throw new RuntimeException("Interrupted, time to stop");
            }

            // all done?
            if (maxCountReached() || maxTimeReached()) {
                if (waitIfmax) {
                    // sleep a long time instead of terminating
                    try {
                        log.info("reached limit, sleeping a long time...");
                        sleep(2000000000L);
                    } catch (InterruptedException e) {
                        throw new RuntimeException("InterruptedException", e);
                    }
                } else {
                    // allow this event through, and the next hasMore() call will be false
                }
            }
            if (++rowCount % 1000 == 0) {
                log.info("nextRow() has returned %,d InputRows", rowCount);
            }

            Status status;
            try {
                status = queue.take();
            } catch (InterruptedException e) {
                throw new RuntimeException("InterruptedException", e);
            }

            HashtagEntity[] hts = status.getHashtagEntities();
            if (hts != null && hts.length > 0) {
                List<String> hashTags = Lists.newArrayListWithExpectedSize(hts.length);
                for (HashtagEntity ht : hts) {
                    hashTags.add(ht.getText());
                }

                theMap.put("htags", Arrays.asList(hashTags.get(0)));
            }

            long retweetCount = status.getRetweetCount();
            theMap.put("retweet_count", retweetCount);
            User user = status.getUser();
            if (user != null) {
                theMap.put("follower_count", user.getFollowersCount());
                theMap.put("friends_count", user.getFriendsCount());
                theMap.put("lang", user.getLang());
                theMap.put("utc_offset", user.getUtcOffset()); // resolution in seconds, -1 if not available?
                theMap.put("statuses_count", user.getStatusesCount());
            }

            return new MapBasedInputRow(status.getCreatedAt().getTime(), dimensions, theMap);
        }

        @Override
        public Runnable commit() {
            // ephemera in, ephemera out.
            return doNothingRunnable; // reuse the same object each time
        }

        @Override
        public void close() throws IOException {
            log.info("CLOSE twitterstream");
            twitterStream.shutdown(); // invokes twitterStream.cleanUp()
        }
    };
}

From source file:io.druid.examples.twitter.TwitterSpritzerFirehoseFactory.java

License:Apache License

@Override
public Firehose connect(InputRowParser parser) throws IOException {
    final ConnectionLifeCycleListener connectionLifeCycleListener = new ConnectionLifeCycleListener() {
        @Override//from  ww w  .  j a  va  2 s. c o m
        public void onConnect() {
            log.info("Connected_to_Twitter");
        }

        @Override
        public void onDisconnect() {
            log.info("Disconnect_from_Twitter");
        }

        /**
         * called before thread gets cleaned up
         */
        @Override
        public void onCleanUp() {
            log.info("Cleanup_twitter_stream");
        }
    }; // ConnectionLifeCycleListener

    final TwitterStream twitterStream;
    final StatusListener statusListener;
    final int QUEUE_SIZE = 2000;
    /** This queue is used to move twitter events from the twitter4j thread to the druid ingest thread.   */
    final BlockingQueue<Status> queue = new ArrayBlockingQueue<Status>(QUEUE_SIZE);
    final long startMsec = System.currentTimeMillis();

    //
    //   set up Twitter Spritzer
    //
    twitterStream = new TwitterStreamFactory().getInstance();
    twitterStream.addConnectionLifeCycleListener(connectionLifeCycleListener);
    statusListener = new StatusListener() { // This is what really gets called to deliver stuff from twitter4j
        @Override
        public void onStatus(Status status) {
            // time to stop?
            if (Thread.currentThread().isInterrupted()) {
                throw new RuntimeException("Interrupted, time to stop");
            }
            try {
                boolean success = queue.offer(status, 15L, TimeUnit.SECONDS);
                if (!success) {
                    log.warn("queue too slow!");
                }
            } catch (InterruptedException e) {
                throw new RuntimeException("InterruptedException", e);
            }
        }

        @Override
        public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {
            //log.info("Got a status deletion notice id:" + statusDeletionNotice.getStatusId());
        }

        @Override
        public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
            // This notice will be sent each time a limited stream becomes unlimited.
            // If this number is high and or rapidly increasing, it is an indication that your predicate is too broad, and you should consider a predicate with higher selectivity.
            log.warn("Got track limitation notice:" + numberOfLimitedStatuses);
        }

        @Override
        public void onScrubGeo(long userId, long upToStatusId) {
            //log.info("Got scrub_geo event userId:" + userId + " upToStatusId:" + upToStatusId);
        }

        @Override
        public void onException(Exception ex) {
            ex.printStackTrace();
        }

        @Override
        public void onStallWarning(StallWarning warning) {
            System.out.println("Got stall warning:" + warning);
        }
    };

    twitterStream.addListener(statusListener);
    twitterStream.sample(); // creates a generic StatusStream
    log.info("returned from sample()");

    return new Firehose() {

        private final Runnable doNothingRunnable = new Runnable() {
            public void run() {
            }
        };

        private long rowCount = 0L;
        private boolean waitIfmax = (getMaxEventCount() < 0L);
        private final Map<String, Object> theMap = new TreeMap<>();
        // DIY json parsing // private final ObjectMapper omapper = new ObjectMapper();

        private boolean maxTimeReached() {
            if (getMaxRunMinutes() <= 0) {
                return false;
            } else {
                return (System.currentTimeMillis() - startMsec) / 60000L >= getMaxRunMinutes();
            }
        }

        private boolean maxCountReached() {
            return getMaxEventCount() >= 0 && rowCount >= getMaxEventCount();
        }

        @Override
        public boolean hasMore() {
            if (maxCountReached() || maxTimeReached()) {
                return waitIfmax;
            } else {
                return true;
            }
        }

        @Override
        public InputRow nextRow() {
            // Interrupted to stop?
            if (Thread.currentThread().isInterrupted()) {
                throw new RuntimeException("Interrupted, time to stop");
            }

            // all done?
            if (maxCountReached() || maxTimeReached()) {
                if (waitIfmax) {
                    // sleep a long time instead of terminating
                    try {
                        log.info("reached limit, sleeping a long time...");
                        sleep(2000000000L);
                    } catch (InterruptedException e) {
                        throw new RuntimeException("InterruptedException", e);
                    }
                } else {
                    // allow this event through, and the next hasMore() call will be false
                }
            }
            if (++rowCount % 1000 == 0) {
                log.info("nextRow() has returned %,d InputRows", rowCount);
            }

            Status status;
            try {
                status = queue.take();
            } catch (InterruptedException e) {
                throw new RuntimeException("InterruptedException", e);
            }

            theMap.clear();

            HashtagEntity[] hts = status.getHashtagEntities();
            String text = status.getText();
            theMap.put("text", (null == text) ? "" : text);
            theMap.put("htags", (hts.length > 0)
                    ? Lists.transform(Arrays.asList(hts), new Function<HashtagEntity, String>() {
                        @Nullable
                        @Override
                        public String apply(HashtagEntity input) {
                            return input.getText();
                        }
                    })
                    : ImmutableList.<String>of());

            long[] lcontrobutors = status.getContributors();
            List<String> contributors = new ArrayList<>();
            for (long contrib : lcontrobutors) {
                contributors.add(String.format("%d", contrib));
            }
            theMap.put("contributors", contributors);

            GeoLocation geoLocation = status.getGeoLocation();
            if (null != geoLocation) {
                double lat = status.getGeoLocation().getLatitude();
                double lon = status.getGeoLocation().getLongitude();
                theMap.put("lat", lat);
                theMap.put("lon", lon);
            } else {
                theMap.put("lat", null);
                theMap.put("lon", null);
            }

            if (status.getSource() != null) {
                Matcher m = sourcePattern.matcher(status.getSource());
                theMap.put("source", m.find() ? m.group(1) : status.getSource());
            }

            theMap.put("retweet", status.isRetweet());

            if (status.isRetweet()) {
                Status original = status.getRetweetedStatus();
                theMap.put("retweet_count", original.getRetweetCount());

                User originator = original.getUser();
                theMap.put("originator_screen_name", originator != null ? originator.getScreenName() : "");
                theMap.put("originator_follower_count",
                        originator != null ? originator.getFollowersCount() : "");
                theMap.put("originator_friends_count", originator != null ? originator.getFriendsCount() : "");
                theMap.put("originator_verified", originator != null ? originator.isVerified() : "");
            }

            User user = status.getUser();
            final boolean hasUser = (null != user);
            theMap.put("follower_count", hasUser ? user.getFollowersCount() : 0);
            theMap.put("friends_count", hasUser ? user.getFriendsCount() : 0);
            theMap.put("lang", hasUser ? user.getLang() : "");
            theMap.put("utc_offset", hasUser ? user.getUtcOffset() : -1); // resolution in seconds, -1 if not available?
            theMap.put("statuses_count", hasUser ? user.getStatusesCount() : 0);
            theMap.put("user_id", hasUser ? String.format("%d", user.getId()) : "");
            theMap.put("screen_name", hasUser ? user.getScreenName() : "");
            theMap.put("location", hasUser ? user.getLocation() : "");
            theMap.put("verified", hasUser ? user.isVerified() : "");

            theMap.put("ts", status.getCreatedAt().getTime());

            List<String> dimensions = Lists.newArrayList(theMap.keySet());

            return new MapBasedInputRow(status.getCreatedAt().getTime(), dimensions, theMap);
        }

        @Override
        public Runnable commit() {
            // ephemera in, ephemera out.
            return doNothingRunnable; // reuse the same object each time
        }

        @Override
        public void close() throws IOException {
            log.info("CLOSE twitterstream");
            twitterStream.shutdown(); // invokes twitterStream.cleanUp()
        }
    };
}

From source file:monitoring.tools.TwitterAPI.java

License:Apache License

private void resetStream() {
    //logger.debug("Initialising kafka producer...");
    //kafka.initProducer(confParams.getKafkaEndpoint());
    logger.debug("Initialising proxy...");
    kafka.initProxy(confParams.getKafkaEndpoint());
    logger.debug("Initialising streaming...");
    firstConnection = true;//  www. ja v a  2 s  . c om
    tweetInfo = new ArrayList<>();
    stream = new TwitterStreamFactory().getInstance();
    timer = new Timer();
    stream.onStatus(new Consumer<Status>() {
        @Override
        public void accept(Status arg0) {
            if (confParams.getAccounts() != null && !confParams.getAccounts().isEmpty()) {
                if (confParams.getAccounts().contains(arg0.getUser().getScreenName())) {
                    tweetInfo.add(arg0);
                }
            } else
                tweetInfo.add(arg0);
        }
    });
    stream.addConnectionLifeCycleListener(new ConnectionLifeCycleListener() {
        @Override
        public void onCleanUp() {
        }

        @Override
        public void onConnect() {
            logger.debug("Connection established successfully");
            timer = new Timer();
            timer.schedule(new TimerTask() {
                public void run() {
                    if (firstConnection) {
                        firstConnection = false;
                    } else {
                        generateData((new Timestamp((new Date()).getTime()).toString()));
                    }
                }
            }, 0, Integer.parseInt(confParams.getTimeSlot()) * 1000);
        }

        @Override
        public void onDisconnect() {
            logger.debug("Connection closed");
        }
    });

    FilterQuery filterQuery = new FilterQuery();
    if (this.confParams.getKeywordExpression() != null)
        filterQuery.track(Utils.generateKeywordExp(this.confParams.getKeywordExpression()));
    stream.filter(filterQuery);
}

From source file:org.apache.druid.examples.twitter.TwitterSpritzerFirehoseFactory.java

License:Apache License

@Override
public Firehose connect(InputRowParser parser, File temporaryDirectory) {
    final ConnectionLifeCycleListener connectionLifeCycleListener = new ConnectionLifeCycleListener() {
        @Override//  w w  w.  j a v  a  2  s .c  o  m
        public void onConnect() {
            log.info("Connected_to_Twitter");
        }

        @Override
        public void onDisconnect() {
            log.info("Disconnect_from_Twitter");
        }

        /**
         * called before thread gets cleaned up
         */
        @Override
        public void onCleanUp() {
            log.info("Cleanup_twitter_stream");
        }
    }; // ConnectionLifeCycleListener

    final TwitterStream twitterStream;
    final StatusListener statusListener;
    final int QUEUE_SIZE = 2000;
    /** This queue is used to move twitter events from the twitter4j thread to the druid ingest thread.   */
    final BlockingQueue<Status> queue = new ArrayBlockingQueue<Status>(QUEUE_SIZE);
    final long startMsec = System.currentTimeMillis();

    //
    //   set up Twitter Spritzer
    //
    twitterStream = new TwitterStreamFactory().getInstance();
    twitterStream.addConnectionLifeCycleListener(connectionLifeCycleListener);
    statusListener = new StatusListener() { // This is what really gets called to deliver stuff from twitter4j
        @Override
        public void onStatus(Status status) {
            // time to stop?
            if (Thread.currentThread().isInterrupted()) {
                throw new RuntimeException("Interrupted, time to stop");
            }
            try {
                boolean success = queue.offer(status, 15L, TimeUnit.SECONDS);
                if (!success) {
                    log.warn("queue too slow!");
                }
            } catch (InterruptedException e) {
                throw new RuntimeException("InterruptedException", e);
            }
        }

        @Override
        public void onDeletionNotice(StatusDeletionNotice statusDeletionNotice) {
            //log.info("Got a status deletion notice id:" + statusDeletionNotice.getStatusId());
        }

        @Override
        public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
            // This notice will be sent each time a limited stream becomes unlimited.
            // If this number is high and or rapidly increasing, it is an indication that your predicate is too broad, and you should consider a predicate with higher selectivity.
            log.warn("Got track limitation notice:" + numberOfLimitedStatuses);
        }

        @Override
        public void onScrubGeo(long userId, long upToStatusId) {
            //log.info("Got scrub_geo event userId:" + userId + " upToStatusId:" + upToStatusId);
        }

        @Override
        public void onException(Exception ex) {
            log.error(ex, "Got exception");
        }

        @Override
        public void onStallWarning(StallWarning warning) {
            log.warn("Got stall warning: %s", warning);
        }
    };

    twitterStream.addListener(statusListener);
    twitterStream.sample(); // creates a generic StatusStream
    log.info("returned from sample()");

    return new Firehose() {

        private final Runnable doNothingRunnable = new Runnable() {
            @Override
            public void run() {
            }
        };

        private long rowCount = 0L;
        private boolean waitIfmax = (getMaxEventCount() < 0L);
        private final Map<String, Object> theMap = new TreeMap<>();
        // DIY json parsing // private final ObjectMapper omapper = new ObjectMapper();

        private boolean maxTimeReached() {
            if (getMaxRunMinutes() <= 0) {
                return false;
            } else {
                return (System.currentTimeMillis() - startMsec) / 60000L >= getMaxRunMinutes();
            }
        }

        private boolean maxCountReached() {
            return getMaxEventCount() >= 0 && rowCount >= getMaxEventCount();
        }

        @Override
        public boolean hasMore() {
            if (maxCountReached() || maxTimeReached()) {
                return waitIfmax;
            } else {
                return true;
            }
        }

        @Nullable
        @Override
        public InputRow nextRow() {
            // Interrupted to stop?
            if (Thread.currentThread().isInterrupted()) {
                throw new RuntimeException("Interrupted, time to stop");
            }

            // all done?
            if (maxCountReached() || maxTimeReached()) {
                if (waitIfmax) {
                    // sleep a long time instead of terminating
                    try {
                        log.info("reached limit, sleeping a long time...");
                        Thread.sleep(2000000000L);
                    } catch (InterruptedException e) {
                        throw new RuntimeException("InterruptedException", e);
                    }
                } else {
                    // allow this event through, and the next hasMore() call will be false
                }
            }
            if (++rowCount % 1000 == 0) {
                log.info("nextRow() has returned %,d InputRows", rowCount);
            }

            Status status;
            try {
                status = queue.take();
            } catch (InterruptedException e) {
                throw new RuntimeException("InterruptedException", e);
            }

            theMap.clear();

            HashtagEntity[] hts = status.getHashtagEntities();
            String text = status.getText();
            theMap.put("text", (null == text) ? "" : text);
            theMap.put("htags", (hts.length > 0)
                    ? Lists.transform(Arrays.asList(hts), new Function<HashtagEntity, String>() {
                        @Nullable
                        @Override
                        public String apply(HashtagEntity input) {
                            return input.getText();
                        }
                    })
                    : ImmutableList.<String>of());

            long[] lcontrobutors = status.getContributors();
            List<String> contributors = new ArrayList<>();
            for (long contrib : lcontrobutors) {
                contributors.add(StringUtils.format("%d", contrib));
            }
            theMap.put("contributors", contributors);

            GeoLocation geoLocation = status.getGeoLocation();
            if (null != geoLocation) {
                double lat = status.getGeoLocation().getLatitude();
                double lon = status.getGeoLocation().getLongitude();
                theMap.put("lat", lat);
                theMap.put("lon", lon);
            } else {
                theMap.put("lat", null);
                theMap.put("lon", null);
            }

            if (status.getSource() != null) {
                Matcher m = sourcePattern.matcher(status.getSource());
                theMap.put("source", m.find() ? m.group(1) : status.getSource());
            }

            theMap.put("retweet", status.isRetweet());

            if (status.isRetweet()) {
                Status original = status.getRetweetedStatus();
                theMap.put("retweet_count", original.getRetweetCount());

                User originator = original.getUser();
                theMap.put("originator_screen_name", originator != null ? originator.getScreenName() : "");
                theMap.put("originator_follower_count",
                        originator != null ? originator.getFollowersCount() : "");
                theMap.put("originator_friends_count", originator != null ? originator.getFriendsCount() : "");
                theMap.put("originator_verified", originator != null ? originator.isVerified() : "");
            }

            User user = status.getUser();
            final boolean hasUser = (null != user);
            theMap.put("follower_count", hasUser ? user.getFollowersCount() : 0);
            theMap.put("friends_count", hasUser ? user.getFriendsCount() : 0);
            theMap.put("lang", hasUser ? user.getLang() : "");
            theMap.put("utc_offset", hasUser ? user.getUtcOffset() : -1); // resolution in seconds, -1 if not available?
            theMap.put("statuses_count", hasUser ? user.getStatusesCount() : 0);
            theMap.put("user_id", hasUser ? StringUtils.format("%d", user.getId()) : "");
            theMap.put("screen_name", hasUser ? user.getScreenName() : "");
            theMap.put("location", hasUser ? user.getLocation() : "");
            theMap.put("verified", hasUser ? user.isVerified() : "");

            theMap.put("ts", status.getCreatedAt().getTime());

            List<String> dimensions = Lists.newArrayList(theMap.keySet());

            return new MapBasedInputRow(status.getCreatedAt().getTime(), dimensions, theMap);
        }

        @Override
        public Runnable commit() {
            // ephemera in, ephemera out.
            return doNothingRunnable; // reuse the same object each time
        }

        @Override
        public void close() {
            log.info("CLOSE twitterstream");
            twitterStream.shutdown(); // invokes twitterStream.cleanUp()
        }
    };
}