com.sparkexample.TwitterStream.java Source code

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Here is the source code for com.sparkexample.TwitterStream.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 com.sparkexample;

import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;

import scala.Tuple2;

import com.google.common.collect.Lists;

import org.apache.spark.SparkConf;
import org.apache.spark.api.java.JavaRDD;
import org.apache.spark.api.java.function.Function;
import org.apache.spark.api.java.function.Function2;
import org.apache.spark.api.java.function.PairFunction;
import org.apache.spark.streaming.Duration;
import org.apache.spark.streaming.api.java.JavaDStream;
import org.apache.spark.streaming.api.java.JavaPairDStream;
import org.apache.spark.streaming.api.java.JavaStreamingContext;
import org.apache.spark.streaming.twitter.TwitterUtils;

import twitter4j.*;

public final class TwitterStream {

    public static void main(String[] args) throws Exception {

        // twitter stuff

        HashMap<String, String> configs = new HashMap<String, String>();
        configs.put("apiKey", "BRPqNoG7WV6ONMWG9C8brmvtl");
        configs.put("apiSecret", "OZ3I4on0JiDQc7HYRsKBeevQC7lG8MBSDSi1yiserj6yTwXFAp");
        configs.put("accessToken", "722309419413991424-IBbz3hhBlroK96qkKexJaFJa3yrcKad");
        configs.put("accessTokenSecret", "UH2H02LP3wV2xw5BOPKfr3lb1rIsKFkmhN1gEqLceuoJX");

        Object[] keys = configs.keySet().toArray();
        for (int k = 0; k < keys.length; k++) {
            String key = keys[k].toString();
            String value = configs.get(key).trim();
            if (value.isEmpty()) {
                throw new Exception("Error setting authentication - value for " + key + " not set");
            }
            String fullKey = "twitter4j.oauth." + key.replace("api", "consumer");
            System.setProperty(fullKey, value);
        }

        // StreamingExamples.setStreamingLogLevels();
        SparkConf sparkConf = new SparkConf().setAppName("JavaQueueStream").setSparkHome("/root/spark/");
        sparkConf.setMaster("local[4]");
        // Create the context
        JavaStreamingContext ssc = new JavaStreamingContext(sparkConf, new Duration(10000));

        JavaDStream<Status> tweets = TwitterUtils.createStream(ssc);

        JavaDStream<String> statuses = tweets.map(new Function<Status, String>() {
            public String call(Status status) {
                return status.getText();
            }
        });
        statuses.print();
        ssc.start();
    }

}