| /* |
| * 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 |
| * |
| * 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.streams.twitter.example; |
| |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import com.typesafe.config.Config; |
| import org.apache.streams.config.ComponentConfigurator; |
| import org.apache.streams.config.StreamsConfigurator; |
| import org.apache.streams.core.StreamsDatum; |
| import org.apache.streams.core.StreamsProcessor; |
| import org.apache.streams.data.util.ActivityUtil; |
| import org.apache.streams.elasticsearch.ElasticsearchConfigurator; |
| import org.apache.streams.elasticsearch.ElasticsearchPersistDeleter; |
| import org.apache.streams.elasticsearch.ElasticsearchPersistWriter; |
| import org.apache.streams.elasticsearch.ElasticsearchWriterConfiguration; |
| import org.apache.streams.example.twitter.TwitterUserstreamElasticsearchConfiguration; |
| import org.apache.streams.jackson.StreamsJacksonMapper; |
| import org.apache.streams.local.builders.LocalStreamBuilder; |
| import org.apache.streams.core.StreamBuilder; |
| import org.apache.streams.pojo.json.Activity; |
| import org.apache.streams.pojo.json.ActivityObject; |
| import org.apache.streams.pojo.json.Actor; |
| import org.apache.streams.pojo.json.Delete; |
| import org.apache.streams.pojo.json.Follow; |
| import org.apache.streams.pojo.json.Page; |
| import org.apache.streams.twitter.TwitterStreamConfiguration; |
| import org.apache.streams.twitter.pojo.FriendList; |
| import org.apache.streams.twitter.pojo.UserstreamEvent; |
| import org.apache.streams.twitter.processor.TwitterTypeConverter; |
| import org.apache.streams.twitter.provider.TwitterConfigurator; |
| import org.apache.streams.twitter.provider.TwitterStreamProvider; |
| import org.apache.streams.twitter.serializer.StreamsTwitterMapper; |
| import org.apache.streams.twitter.serializer.util.TwitterActivityUtil; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.LinkedBlockingQueue; |
| |
| /** |
| * Example stream that populates elasticsearch with activities from twitter userstream in real-time |
| */ |
| public class TwitterUserstreamElasticsearch implements Runnable { |
| |
| public final static String STREAMS_ID = "TwitterUserstreamElasticsearch"; |
| |
| private final static Logger LOGGER = LoggerFactory.getLogger(TwitterUserstreamElasticsearch.class); |
| |
| TwitterUserstreamElasticsearchConfiguration config; |
| |
| public TwitterUserstreamElasticsearch() { |
| this(new ComponentConfigurator<>(TwitterUserstreamElasticsearchConfiguration.class).detectConfiguration(StreamsConfigurator.getConfig())); |
| |
| } |
| |
| public TwitterUserstreamElasticsearch(TwitterUserstreamElasticsearchConfiguration config) { |
| this.config = config; |
| } |
| |
| public static void main(String[] args) |
| { |
| LOGGER.info(StreamsConfigurator.config.toString()); |
| |
| TwitterUserstreamElasticsearch userstream = new TwitterUserstreamElasticsearch(); |
| new Thread(userstream).start(); |
| |
| } |
| |
| @Override |
| public void run() { |
| |
| TwitterStreamConfiguration twitterStreamConfiguration = config.getTwitter(); |
| ElasticsearchWriterConfiguration elasticsearchWriterConfiguration = config.getElasticsearch(); |
| |
| TwitterStreamProvider stream = new TwitterStreamProvider(twitterStreamConfiguration); |
| TwitterTypeConverter converter = new TwitterTypeConverter(ObjectNode.class, Activity.class); |
| ElasticsearchPersistWriter writer = new ElasticsearchPersistWriter(elasticsearchWriterConfiguration); |
| DeleteOnlyProcessor deleteOnlyProcessor = new DeleteOnlyProcessor(); |
| NoDeletesProcessor noDeletesProcessor = new NoDeletesProcessor(); |
| ElasticsearchPersistDeleter deleter = new ElasticsearchPersistDeleter(elasticsearchWriterConfiguration); |
| |
| Map<String, Object> streamConfig = Maps.newHashMap(); |
| streamConfig.put(LocalStreamBuilder.TIMEOUT_KEY, 12 * 60 * 1000); |
| StreamBuilder builder = new LocalStreamBuilder(25); |
| |
| builder.newPerpetualStream(TwitterStreamProvider.STREAMS_ID, stream); |
| builder.addStreamsProcessor("converter", converter, 2, TwitterStreamProvider.STREAMS_ID); |
| builder.addStreamsProcessor("NoDeletesProcessor", noDeletesProcessor, 1, "converter"); |
| builder.addStreamsPersistWriter(ElasticsearchPersistWriter.STREAMS_ID, writer, 1, "NoDeletesProcessor"); |
| builder.addStreamsProcessor("DeleteOnlyProcessor", deleteOnlyProcessor, 1, "converter"); |
| builder.addStreamsPersistWriter(ElasticsearchPersistDeleter.STREAMS_ID, deleter, 1, "DeleteOnlyProcessor"); |
| |
| builder.start(); |
| |
| } |
| |
| private class DeleteOnlyProcessor implements StreamsProcessor |
| { |
| String delete = new Delete().getVerb(); |
| |
| @Override |
| public void prepare(Object configurationObject) {} |
| |
| @Override |
| public void cleanUp() {} |
| |
| @Override |
| public List<StreamsDatum> process(StreamsDatum entry) { |
| Preconditions.checkArgument(entry.getDocument() instanceof Activity); |
| Activity activity = (Activity) entry.getDocument(); |
| if( activity.getVerb().equals(delete)) |
| return Lists.newArrayList(entry); |
| else |
| return Lists.newArrayList(); |
| } |
| } |
| |
| private class NoDeletesProcessor implements StreamsProcessor |
| { |
| String delete = new Delete().getVerb(); |
| |
| @Override |
| public void prepare(Object configurationObject) {} |
| |
| @Override |
| public void cleanUp() {} |
| |
| @Override |
| public List<StreamsDatum> process(StreamsDatum entry) { |
| Preconditions.checkArgument(entry.getDocument() instanceof Activity); |
| Activity activity = (Activity) entry.getDocument(); |
| if( activity.getVerb().equals(delete)) |
| return Lists.newArrayList(); |
| else |
| return Lists.newArrayList(entry); |
| } |
| } |
| |
| } |