| /** |
| * 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.metron.elasticsearch.bulk; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.FileReader; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import org.apache.metron.common.utils.JSONUtils; |
| |
| /** |
| * This is a utility for taking a file of JSON objects that were exported from ES and transforming |
| * it into a bulk import format. This was useful for backing up and restoring the Kibana dashboard |
| * index. The notable gap is that it expects one record per line in the file, which is not how |
| * ES generally returns results. Elasticsearch-dump was used as the intermediary to export data in |
| * the desired format for consumption by this tool. |
| * @see <a href="https://github.com/taskrabbit/elasticsearch-dump">https://github.com/taskrabbit/elasticsearch-dump</a> |
| */ |
| public class ElasticsearchImportExport { |
| |
| public static void main(String[] args) { |
| if (args.length != 2) { |
| throw new RuntimeException("Expects 'input' and 'output' file arguments."); |
| } |
| final String inPath = args[0]; |
| final String outPath = args[1]; |
| try { |
| new ElasticsearchImportExport().bulkify(Paths.get(inPath), Paths.get(outPath)); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| System.exit(1); |
| } |
| System.exit(0); |
| } |
| |
| /** |
| * Takes a file of line-delimited JSON objects and converts them to an Elasticsearch bulk import |
| * format. |
| * |
| * @param input input JSON file (note, each line is expected to be a separate complete JSON |
| * object, not the file as a whole.) |
| * @param output Elasticsearch bulk import file. |
| * @throws IOException |
| */ |
| public void bulkify(Path input, Path output) throws IOException { |
| List<String> outRecs = new ArrayList<String>(); |
| try (BufferedReader br = new BufferedReader(new FileReader(input.toFile()))) { |
| String line; |
| while ((line = br.readLine()) != null) { |
| Map<String, Object> inDoc = JSONUtils.INSTANCE |
| .load(line, JSONUtils.MAP_SUPPLIER); |
| Object id = inDoc.get("_id"); |
| Object type = inDoc.get("_type"); |
| String createRaw = String |
| .format("{ \"create\" : { \"_id\": \"%s\", \"_type\": \"%s\" } }", id, type); |
| String outData = JSONUtils.INSTANCE.toJSON(inDoc.get("_source"), false); |
| outRecs.add(createRaw); |
| outRecs.add(outData); |
| } |
| } |
| try (BufferedWriter br = new BufferedWriter(new FileWriter(output.toFile()))) { |
| for (String line : outRecs) { |
| br.write(line); |
| br.write(System.lineSeparator()); |
| } |
| } |
| } |
| |
| } |