TwitterHashTagCount.java Source code

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Here is the source code for TwitterHashTagCount.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 tthe License for the specific language governing permissions and
 * limitations under the License.
 */

import scala.Tuple2;
import com.google.common.collect.Lists;

import org.apache.spark.SparkConf;
import org.apache.spark.api.java.function.*;
import org.apache.spark.api.java.StorageLevels;
import org.apache.spark.streaming.Durations;
import org.apache.spark.streaming.api.java.JavaDStream;
import org.apache.spark.streaming.api.java.JavaPairDStream;
import org.apache.spark.streaming.api.java.JavaReceiverInputDStream;
import org.apache.spark.streaming.api.java.JavaStreamingContext;
import org.apache.spark.api.java.JavaPairRDD;
import org.apache.spark.api.java.*;

import org.apache.spark.streaming.twitter.TwitterUtils;

import twitter4j.conf.ConfigurationBuilder;
import twitter4j.TwitterFactory;
import twitter4j.Twitter;
import twitter4j.Status;
import twitter4j.StatusListener;
import twitter4j.TwitterStream;
import twitter4j.TwitterException;
import twitter4j.TwitterStreamFactory;
import twitter4j.StatusDeletionNotice;
import twitter4j.StallWarning;
import twitter4j.conf.Configuration;

import java.util.regex.Pattern;
import java.util.ArrayList;
import java.util.List;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.Iterator;
import java.util.Calendar;
import java.text.SimpleDateFormat;

public final class TwitterHashTagCount {
    // set OAuth credentials
    private static void setTwitterOAuth() {
        System.setProperty("twitter4j.oauth.consumerKey", TwitterOAuthKey.consumerKey);
        System.setProperty("twitter4j.oauth.consumerSecret", TwitterOAuthKey.consumerSecret);
        System.setProperty("twitter4j.oauth.accessToken", TwitterOAuthKey.accessToken);
        System.setProperty("twitter4j.oauth.accessTokenSecret", TwitterOAuthKey.accessTokenSecret);
    }

    private static void twitterStreaming(int window, int slide) {

        // Create the context with a 1 second batch size
        SparkConf sparkConf = new SparkConf().setAppName("JavaNetworkWordCount");
        JavaStreamingContext ssc = new JavaStreamingContext(sparkConf, Durations.seconds(1));
        JavaReceiverInputDStream<twitter4j.Status> stream = TwitterUtils.createStream(ssc);

        FlatMapFunction<twitter4j.Status, String> mapFunc = new FlatMapFunction<twitter4j.Status, String>() {
            @Override
            public Iterable<String> call(twitter4j.Status status) {
                ArrayList<String> hashTag = new ArrayList<String>();
                Pattern p = Pattern.compile("#(\\w+)\\b");
                Matcher m = p.matcher(status.getText());
                while (m.find()) {
                    hashTag.add(m.group(1));
                }
                return hashTag;
            }
        };

        VoidFunction<JavaPairRDD<Integer, String>> outFunc = new VoidFunction<JavaPairRDD<Integer, String>>() {
            @Override
            public void call(JavaPairRDD<Integer, String> rdd) {
                List<Tuple2<Integer, String>> list = rdd.take(10);
                Iterator<Tuple2<Integer, String>> ite = list.iterator();
                System.out.println("-------------------------");
                String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(Calendar.getInstance().getTime());
                System.out.println("   " + timeStamp);
                System.out.println("-------------------------");
                while (ite.hasNext()) {
                    Tuple2<Integer, String> tag = ite.next();
                    System.out.println(tag.toString());
                }
            }
        };

        stream.flatMap(mapFunc).mapToPair((String s) -> {
            return new Tuple2<String, Integer>(s, 1);
        }).reduceByKeyAndWindow((Integer i1, Integer i2) -> {
            return i1 + i2;
        }, Durations.seconds(window), Durations.seconds(slide)).mapToPair((Tuple2<String, Integer> item) -> {
            return item.swap();
        }).transformToPair((JavaPairRDD<Integer, String> rdd) -> {
            return rdd.sortByKey(false);
        }).foreachRDD(outFunc);

        ssc.start();
        ssc.awaitTermination();
    }

    public static void main(String[] args) {
        if (args.length != 2) {
            System.out.println("please input window time and slide time");
            return;
        }
        System.out.println("Windows time = " + args[0] + " seconds");
        System.out.println("Windows slide = " + args[1] + " seconds");
        int window = Integer.parseInt(args[0]);
        int slide = Integer.parseInt(args[1]);

        setTwitterOAuth();
        twitterStreaming(window, slide);
    }
}