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/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.examples.twitter;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonTypeName;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import io.druid.data.input.Firehose;
import io.druid.data.input.FirehoseFactory;
import io.druid.data.input.InputRow;
import io.druid.data.input.MapBasedInputRow;
import io.druid.data.input.impl.InputRowParser;
import io.druid.java.util.common.logger.Logger;
import io.druid.java.util.common.StringUtils;
import twitter4j.ConnectionLifeCycleListener;
import twitter4j.GeoLocation;
import twitter4j.HashtagEntity;
import twitter4j.StallWarning;
import twitter4j.Status;
import twitter4j.StatusDeletionNotice;
import twitter4j.StatusListener;
import twitter4j.TwitterStream;
import twitter4j.TwitterStreamFactory;
import twitter4j.User;
import javax.annotation.Nullable;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Twitter "spritzer" Firehose Factory named "twitzer".
* Builds a Firehose that emits a stream of
* ??
* with timestamps along with ??.
* The generated tuples have the form (timestamp, ????)
* where the timestamp is from the twitter event.
*
* Example spec file:
*
* Example query using POST to /druid/v2/?w (where w is an arbitrary parameter and the date and time
* is UTC):
*
* Notes on twitter.com HTTP (REST) API: v1.0 will be disabled around 2013-03 so v1.1 should be used;
* twitter4j 3.0 (not yet released) will support the v1.1 api.
* Specifically, we should be using https://stream.twitter.com/1.1/statuses/sample.json
* See: http://jira.twitter4j.org/browse/TFJ-186
*
* Notes on JSON parsing: as of twitter4j 2.2.x, the json parser has some bugs (ex: Status.toString()
* can have number format exceptions), so it might be necessary to extract raw json and process it
* separately. If so, set twitter4.jsonStoreEnabled=true and look at DataObjectFactory#getRawJSON();
* com.fasterxml.jackson.databind.ObjectMapper should be used to parse.
*
* @author pbaclace
*/
@JsonTypeName("twitzer")
public class TwitterSpritzerFirehoseFactory implements FirehoseFactory
{
private static final Logger log = new Logger(TwitterSpritzerFirehoseFactory.class);
private static final Pattern sourcePattern = Pattern.compile("]*>(.*?)", Pattern.CASE_INSENSITIVE);
/**
* max events to receive, -1 is infinite, 0 means nothing is delivered; use this to prevent
* infinite space consumption or to prevent getting throttled at an inconvenient time
* or to see what happens when a Firehose stops delivering
* values, or to have hasMore() return false. The Twitter Spritzer can deliver about
* 1000 events per minute.
*/
private final int maxEventCount;
/**
* maximum number of minutes to fetch Twitter events. Use this to prevent getting
* throttled at an inconvenient time. If zero or less, no time limit for run.
*/
private final int maxRunMinutes;
@JsonCreator
public TwitterSpritzerFirehoseFactory(
@JsonProperty("maxEventCount") Integer maxEventCount,
@JsonProperty("maxRunMinutes") Integer maxRunMinutes
)
{
this.maxEventCount = maxEventCount;
this.maxRunMinutes = maxRunMinutes;
log.info("maxEventCount=" + ((maxEventCount <= 0) ? "no limit" : maxEventCount));
log.info("maxRunMinutes=" + ((maxRunMinutes <= 0) ? "no limit" : maxRunMinutes));
}
@Override
public Firehose connect(InputRowParser parser, File temporaryDirectory) throws IOException
{
final ConnectionLifeCycleListener connectionLifeCycleListener = new ConnectionLifeCycleListener()
{
@Override
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 queue = new ArrayBlockingQueue(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 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()
{
@Nullable
@Override
public String apply(HashtagEntity input)
{
return input.getText();
}
}
) : ImmutableList.of()
);
long[] lcontrobutors = status.getContributors();
List 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 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()
}
};
}
@JsonProperty
public int getMaxEventCount()
{
return maxEventCount;
}
@JsonProperty
public int getMaxRunMinutes()
{
return maxRunMinutes;
}
}
