| /** |
| * 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 org.apache.apex.examples.twitter; |
| |
| import java.net.URI; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.apex.malhar.lib.utils.PubSubHelper; |
| import org.apache.hadoop.conf.Configuration; |
| |
| import com.google.common.collect.Maps; |
| import com.datatorrent.api.Context; |
| import com.datatorrent.api.DAG; |
| import com.datatorrent.api.DAG.Locality; |
| import com.datatorrent.api.Operator; |
| import com.datatorrent.api.Operator.OutputPort; |
| import com.datatorrent.api.StreamingApplication; |
| import com.datatorrent.api.annotation.ApplicationAnnotation; |
| import com.datatorrent.contrib.twitter.TwitterSampleInput; |
| import com.datatorrent.lib.algo.UniqueCounter; |
| import com.datatorrent.lib.appdata.schemas.SchemaUtils; |
| import com.datatorrent.lib.appdata.snapshot.AppDataSnapshotServerMap; |
| import com.datatorrent.lib.io.ConsoleOutputOperator; |
| import com.datatorrent.lib.io.PubSubWebSocketAppDataQuery; |
| import com.datatorrent.lib.io.PubSubWebSocketAppDataResult; |
| |
| /** |
| * Twitter Example Application: <br> |
| * This example application samples random public status from twitter, send to url |
| * extractor. <br> |
| * Top 10 url(s) mentioned in tweets in last 5 mins are displayed on every |
| * window count (500ms).<br> |
| * <br> |
| * |
| * Real Time Calculation :<br> |
| * This application calculates top 10 url mentioned in tweets in last 5 |
| * minutes across a 1% random tweet sampling on a rolling window basis.<br> |
| * <br> |
| * Before running this application, you need to have a <a href="https://dev.twitter.com/apps">Twitter API account</a> |
| * and configure the authentication. For launch from CLI, those go into ~/.dt/dt-site.xml: |
| * <pre> |
| * {@code |
| * <?xml version="1.0" encoding="UTF-8"?> |
| * <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> |
| * <configuration> |
| * |
| * <property> <name>dt.operator.TweetSampler.consumerKey</name> |
| * <value>TBD</value> </property> |
| * |
| * <property> <name>dt.operator.TweetSampler.consumerSecret</name> |
| * <value>TBD</value> </property> |
| * |
| * <property> <name>dt.operator.TweetSampler.accessToken</name> |
| * <value>TBD</value> </property> |
| * |
| * <property> <name>dt.operator.TweetSampler.accessTokenSecret</name> |
| * <value>TBD</value> </property> |
| * </configuration> |
| * } |
| * </pre> |
| * Custom Attributes: <br> |
| * <b>topCounts operator : <b> |
| * <ul> |
| * <li>Top Count : 10, number of top unique url to be reported.</li> |
| * <li>Sliding window count : 600, report over last 5 min (600 * .5 / 60 mins)</li> |
| * <li>window slide value : 1</li> |
| * </ul> |
| * <p> |
| * Running Java Test or Main app in IDE: |
| * |
| * <pre> |
| * LocalMode.runApp(new Application(), 600000); // 10 min run |
| * </pre> |
| * |
| * Run Success : <br> |
| * For successful deployment and run, user should see following output on |
| * console: |
| * |
| * <pre> |
| * topURLs: {http://goo.gl/V0R05=2, http://etsy.me/10r1Yg3=6, http://tinyurl.com/88b5jqb=2, http://www.justunfollow.com=4, http://fllwrs.com=2, http://goo.gl/a9Sjp=2, http://goo.gl/iKeVH=2, http://Unfollowers.me=7, http://freetexthost.com/j3y03la4g3=2, http://uranaitter.com=4} |
| * topURLs: {http://goo.gl/V0R05=2, http://etsy.me/10r1Yg3=6, http://tinyurl.com/88b5jqb=2, http://www.justunfollow.com=4, http://fllwrs.com=2, http://goo.gl/a9Sjp=2, http://goo.gl/iKeVH=2, http://Unfollowers.me=7, http://freetexthost.com/j3y03la4g3=2, http://uranaitter.com=4} |
| * topURLs: {http://goo.gl/V0R05=2, http://etsy.me/10r1Yg3=6, http://tinyurl.com/88b5jqb=2, http://www.justunfollow.com=4, http://fllwrs.com=2, http://goo.gl/a9Sjp=2, http://goo.gl/iKeVH=2, http://Unfollowers.me=7, http://freetexthost.com/j3y03la4g3=2, http://uranaitter.com=4} |
| * topURLs: {http://goo.gl/V0R05=2, http://etsy.me/10r1Yg3=6, http://tinyurl.com/88b5jqb=2, http://www.justunfollow.com=4, http://fllwrs.com=2, http://goo.gl/a9Sjp=2, http://goo.gl/iKeVH=2, http://Unfollowers.me=7, http://freetexthost.com/j3y03la4g3=2, http://uranaitter.com=4} |
| * topURLs: {http://goo.gl/V0R05=2, http://etsy.me/10r1Yg3=6, http://tinyurl.com/88b5jqb=2, http://www.justunfollow.com=4, http://fllwrs.com=2, http://goo.gl/a9Sjp=2, http://goo.gl/iKeVH=2, http://Unfollowers.me=7, http://freetexthost.com/j3y03la4g3=2, http://uranaitter.com=4} |
| * topURLs: {http://goo.gl/V0R05=2, http://etsy.me/10r1Yg3=6, http://tinyurl.com/88b5jqb=2, http://www.justunfollow.com=4, http://fllwrs.com=2, http://goo.gl/a9Sjp=2, http://goo.gl/iKeVH=2, http://Unfollowers.me=7, http://freetexthost.com/j3y03la4g3=2, http://uranaitter.com=4} |
| * topURLs: {http://goo.gl/V0R05=2, http://etsy.me/10r1Yg3=6, http://tinyurl.com/88b5jqb=2, http://www.justunfollow.com=4, http://fllwrs.com=2, http://goo.gl/a9Sjp=2, http://goo.gl/iKeVH=2, http://Unfollowers.me=7, http://freetexthost.com/j3y03la4g3=2, http://uranaitter.com=4} |
| * 2013-06-17 14:38:55,201 [main] INFO stram.StramLocalCluster run - Application finished. |
| * 2013-06-17 14:38:55,201 [container-2] INFO stram.StramChild processHeartbeatResponse - Received shutdown request |
| * </pre> |
| * |
| * Scaling Options : <br> |
| * User can scale application by setting intial partition size > 1 on count |
| * unique operator. <br> |
| * <br> |
| * |
| * Application DAG : <br> |
| * <img src="doc-files/Application.gif" width=600px > <br> |
| * <br> |
| * |
| * Streaming Window Size : 500ms(default) <br> |
| * Operator Details : <br> |
| * <ul> |
| * <li><b>The twitterFeed operator : </b> This operator samples random public |
| * statues from twitter and emits to application. <br> |
| * Class : com.datatorrent.examples.twitter.TwitterSampleInput <br> |
| * StateFull : No, window count 1 <br> |
| * </li> |
| * <li><b>The urlExtractor operator : </b> This operator extracts url from |
| * random sampled statues from twitter. <br> |
| * Class : {@link TwitterStatusURLExtractor} <br> |
| * StateFull : No, window count 1 <br> |
| * </li> |
| * <li><b>The uniqueCounter operator : </b> This operator aggregates count for each |
| * url extracted from random samples. <br> |
| * Class : {@link com.datatorrent.lib.algo.UniqueCounter} <br> |
| * StateFull : No, window count 1 <br> |
| * </li> |
| * <li><b> The topCounts operator : </b> This operator caluculates top url in last 1 |
| * min sliding window count 1. <br> |
| * Class : com.datatorrent.lib.algo.WindowedTopCounter <br> |
| * StateFull : Yes, sliding window count 120 (1 min) <br> |
| * </li> |
| * <li><b>The operator Console: </b> This operator just outputs the input tuples |
| * to the console (or stdout). <br> |
| * </li> |
| * </ul> |
| * |
| * @since 0.3.2 |
| */ |
| @ApplicationAnnotation(name = TwitterTopCounterApplication.APP_NAME) |
| public class TwitterTopCounterApplication implements StreamingApplication |
| { |
| public static final String SNAPSHOT_SCHEMA = "twitterURLDataSchema.json"; |
| public static final String CONVERSION_SCHEMA = "twitterURLConverterSchema.json"; |
| public static final String APP_NAME = "TwitterExample"; |
| |
| private final Locality locality = null; |
| |
| @Override |
| public void populateDAG(DAG dag, Configuration conf) |
| { |
| // Setup the operator to get the data from twitter sample stream injected into the system. |
| TwitterSampleInput twitterFeed = new TwitterSampleInput(); |
| twitterFeed = dag.addOperator("TweetSampler", twitterFeed); |
| |
| // Setup the operator to get the URLs extracted from the twitter statuses |
| TwitterStatusURLExtractor urlExtractor = dag.addOperator("URLExtractor", TwitterStatusURLExtractor.class); |
| |
| // Setup a node to count the unique urls within a window. |
| UniqueCounter<String> uniqueCounter = dag.addOperator("UniqueURLCounter", new UniqueCounter<String>()); |
| // Get the aggregated url counts and count them over last 5 mins. |
| dag.setAttribute(uniqueCounter, Context.OperatorContext.APPLICATION_WINDOW_COUNT, 600); |
| dag.setAttribute(uniqueCounter, Context.OperatorContext.SLIDE_BY_WINDOW_COUNT, 1); |
| |
| |
| WindowedTopCounter<String> topCounts = dag.addOperator("TopCounter", new WindowedTopCounter<String>()); |
| topCounts.setTopCount(10); |
| topCounts.setSlidingWindowWidth(1); |
| topCounts.setDagWindowWidth(1); |
| |
| // Feed the statuses from feed into the input of the url extractor. |
| dag.addStream("TweetStream", twitterFeed.status, urlExtractor.input).setLocality(Locality.CONTAINER_LOCAL); |
| // Start counting the urls coming out of URL extractor |
| dag.addStream("TwittedURLs", urlExtractor.url, uniqueCounter.data).setLocality(locality); |
| // Count unique urls |
| dag.addStream("UniqueURLCounts", uniqueCounter.count, topCounts.input); |
| |
| consoleOutput(dag, "topURLs", topCounts.output, SNAPSHOT_SCHEMA, "url"); |
| } |
| |
| public static void consoleOutput(DAG dag, String operatorName, OutputPort<List<Map<String, Object>>> topCount, String schemaFile, String alias) |
| { |
| if (PubSubHelper.isGatewayConfigured(dag)) { |
| URI uri = PubSubHelper.getURI(dag); |
| |
| AppDataSnapshotServerMap snapshotServer = dag.addOperator("SnapshotServer", new AppDataSnapshotServerMap()); |
| |
| Map<String, String> conversionMap = Maps.newHashMap(); |
| conversionMap.put(alias, WindowedTopCounter.FIELD_TYPE); |
| String snapshotServerJSON = SchemaUtils.jarResourceFileToString(schemaFile); |
| |
| snapshotServer.setSnapshotSchemaJSON(snapshotServerJSON); |
| snapshotServer.setTableFieldToMapField(conversionMap); |
| |
| PubSubWebSocketAppDataQuery wsQuery = new PubSubWebSocketAppDataQuery(); |
| wsQuery.setUri(uri); |
| snapshotServer.setEmbeddableQueryInfoProvider(wsQuery); |
| |
| PubSubWebSocketAppDataResult wsResult = dag.addOperator("QueryResult", new PubSubWebSocketAppDataResult()); |
| wsResult.setUri(uri); |
| Operator.InputPort<String> queryResultPort = wsResult.input; |
| |
| dag.addStream("MapProvider", topCount, snapshotServer.input); |
| dag.addStream("Result", snapshotServer.queryResult, queryResultPort); |
| } else { |
| ConsoleOutputOperator operator = dag.addOperator(operatorName, new ConsoleOutputOperator()); |
| operator.setStringFormat(operatorName + ": %s"); |
| |
| dag.addStream("MapProvider", topCount, operator.input); |
| } |
| } |
| } |