| /* |
| * 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.example; |
| |
| import org.apache.streams.config.ComponentConfigurator; |
| import org.apache.streams.config.StreamsConfigurator; |
| import org.apache.streams.core.StreamBuilder; |
| import org.apache.streams.elasticsearch.ElasticsearchPersistReader; |
| import org.apache.streams.hdfs.WebHdfsPersistWriter; |
| import org.apache.streams.jackson.StreamsJacksonMapper; |
| import org.apache.streams.local.LocalRuntimeConfiguration; |
| import org.apache.streams.local.builders.LocalStreamBuilder; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Copies documents from an elasticsearch index to new-line delimited json on dfs. |
| */ |
| public class ElasticsearchHdfs implements Runnable { |
| |
| public final static String STREAMS_ID = "ElasticsearchHdfs"; |
| |
| private final static Logger LOGGER = LoggerFactory.getLogger(ElasticsearchHdfs.class); |
| |
| ElasticsearchHdfsConfiguration config; |
| |
| public ElasticsearchHdfs() { |
| this(new ComponentConfigurator<>(ElasticsearchHdfsConfiguration.class).detectConfiguration(StreamsConfigurator.getConfig())); |
| } |
| |
| public ElasticsearchHdfs(ElasticsearchHdfsConfiguration reindex) { |
| this.config = reindex; |
| } |
| |
| public static void main(String[] args) |
| { |
| LOGGER.info(StreamsConfigurator.config.toString()); |
| ElasticsearchHdfs backup = new ElasticsearchHdfs(); |
| new Thread(backup).start(); |
| } |
| |
| @Override |
| public void run() { |
| |
| ElasticsearchPersistReader elasticsearchPersistReader = new ElasticsearchPersistReader(config.getSource()); |
| WebHdfsPersistWriter hdfsPersistWriter = new WebHdfsPersistWriter(config.getDestination()); |
| |
| LocalRuntimeConfiguration localRuntimeConfiguration = |
| StreamsJacksonMapper.getInstance().convertValue(StreamsConfigurator.detectConfiguration(), LocalRuntimeConfiguration.class); |
| StreamBuilder builder = new LocalStreamBuilder(localRuntimeConfiguration); |
| |
| builder.newPerpetualStream(ElasticsearchPersistReader.class.getCanonicalName(), elasticsearchPersistReader); |
| builder.addStreamsPersistWriter(WebHdfsPersistWriter.class.getCanonicalName(), hdfsPersistWriter, 1, ElasticsearchPersistReader.class.getCanonicalName()); |
| builder.start(); |
| } |
| } |