gerrit.onap Code Review - dcaegen2/services.git/blob

   1 /*
   2 * ============LICENSE_START=======================================================
   3 * ONAP : DATALAKE
   4 * ================================================================================
   5 * Copyright 2019 China Mobile
   6 *=================================================================================
   7 * Licensed under the Apache License, Version 2.0 (the "License");
   8 * you may not use this file except in compliance with the License.
   9 * You may obtain a copy of the License at
  10 *
  11 *     http://www.apache.org/licenses/LICENSE-2.0
  12 *
  13 * Unless required by applicable law or agreed to in writing, software
  14 * distributed under the License is distributed on an "AS IS" BASIS,
  15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 * See the License for the specific language governing permissions and
  17 * limitations under the License.
  18 * ============LICENSE_END=========================================================
  19 */
  20
  21 package org.onap.datalake.feeder.service;
  22
  23 import java.io.IOException;
  24 import java.util.List;
  25
  26 import javax.annotation.PostConstruct;
  27 import javax.annotation.PreDestroy;
  28
  29 import org.apache.commons.lang3.StringUtils;
  30 import org.apache.http.HttpHost;
  31 import org.elasticsearch.ElasticsearchException;
  32 import org.elasticsearch.action.ActionListener;
  33 import org.elasticsearch.action.get.GetRequest;
  34 import org.elasticsearch.action.get.GetResponse;
  35 import org.elasticsearch.action.index.IndexResponse;
  36 import org.elasticsearch.client.indices.CreateIndexRequest;
  37 import org.elasticsearch.client.indices.CreateIndexResponse;
  38 import org.elasticsearch.client.indices.GetIndexRequest;
  39 import org.elasticsearch.action.bulk.BulkRequest;
  40 import org.elasticsearch.action.bulk.BulkResponse;
  41 import org.elasticsearch.action.index.IndexRequest;
  42 import org.elasticsearch.client.RequestOptions;
  43 import org.elasticsearch.client.RestClient;
  44 import org.elasticsearch.client.RestHighLevelClient;
  45 import org.elasticsearch.common.xcontent.XContentType;
  46 import org.elasticsearch.rest.RestStatus;
  47 import org.json.JSONObject;
  48 import org.onap.datalake.feeder.config.ApplicationConfiguration;
  49 import org.onap.datalake.feeder.domain.Db;
  50 import org.onap.datalake.feeder.dto.TopicConfig;
  51 import org.slf4j.Logger;
  52 import org.slf4j.LoggerFactory;
  53
  54 import org.springframework.beans.factory.annotation.Autowired;
  55 import org.springframework.stereotype.Service;
  56
  57 /**
  58  * Elasticsearch Service for table creation, data submission, as well as data pre-processing.
  59  *
  60  * @author Guobiao Mo
  61  *
  62  */
  63 @Service
  64 public class ElasticsearchService {
  65
  66         private final Logger log = LoggerFactory.getLogger(this.getClass());
  67
  68         @Autowired
  69         private ApplicationConfiguration config;
  70
  71         @Autowired
  72         private DbService dbService;
  73
  74         private RestHighLevelClient client;
  75         ActionListener<BulkResponse> listener;
  76
  77         //ES Encrypted communication https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/_encrypted_communication.html#_encrypted_communication
  78         //Basic authentication https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/_basic_authentication.html
  79         @PostConstruct
  80         private void init() {
  81                 Db elasticsearch = dbService.getElasticsearch();
  82                 String elasticsearchHost = elasticsearch.getHost();
  83
  84                 // Initialize the Connection
  85                 client = new RestHighLevelClient(RestClient.builder(new HttpHost(elasticsearchHost, 9200, "http"), new HttpHost(elasticsearchHost, 9201, "http")));
  86
  87                 log.info("Connected to Elasticsearch Host {}", elasticsearchHost);
  88
  89                 listener = new ActionListener<BulkResponse>() {
  90                         @Override
  91                         public void onResponse(BulkResponse bulkResponse) {
  92                                 if(bulkResponse.hasFailures()) {
  93                                         log.debug(bulkResponse.buildFailureMessage());
  94                                 }
  95                         }
  96
  97                         @Override
  98                         public void onFailure(Exception e) {
  99                                 log.error(e.getMessage());
 100                         }
 101                 };
 102         }
 103
 104         @PreDestroy
 105         public void cleanUp() throws IOException {
 106                 config.getShutdownLock().readLock().lock();
 107
 108                 try {
 109                         log.info("cleanUp() closing Elasticsearch client.");
 110                         client.close();
 111                 } catch (IOException e) {
 112                         log.error("client.close() at cleanUp.", e);
 113                 } finally {
 114                         config.getShutdownLock().readLock().unlock();
 115                 }
 116         }
 117
 118         public void ensureTableExist(String topic) throws IOException {
 119                 String topicLower = topic.toLowerCase();
 120
 121                 GetIndexRequest request = new GetIndexRequest(topicLower);
 122
 123                 boolean exists = client.indices().exists(request, RequestOptions.DEFAULT);
 124                 if (!exists) {
 125                         //TODO submit mapping template
 126                         CreateIndexRequest createIndexRequest = new CreateIndexRequest(topicLower);
 127                         CreateIndexResponse createIndexResponse = client.indices().create(createIndexRequest, RequestOptions.DEFAULT);
 128                         log.info("{} : created {}", createIndexResponse.index(), createIndexResponse.isAcknowledged());
 129                 }
 130         }
 131
 132         //TTL is not supported in Elasticsearch 5.0 and later, what can we do? FIXME
 133         public void saveJsons(TopicConfig topic, List<JSONObject> jsons) {
 134
 135                 BulkRequest request = new BulkRequest();
 136
 137                 for (JSONObject json : jsons) {
 138                         if (topic.isCorrelateClearedMessage()) {
 139                                 boolean found = correlateClearedMessage(topic, json);
 140                                 if (found) {
 141                                         continue;
 142                                 }
 143                         }
 144
 145                         String id = topic.getMessageId(json); //id can be null
 146
 147                         request.add(new IndexRequest(topic.getName().toLowerCase(), config.getElasticsearchType(), id).source(json.toString(), XContentType.JSON));
 148                 }
 149
 150                 log.debug("saving text to topic = {}, batch count = {} ", topic, jsons.size());
 151
 152                 if (config.isAsync()) {
 153                         client.bulkAsync(request, RequestOptions.DEFAULT, listener);
 154                 } else {
 155                         try {
 156                                 BulkResponse bulkResponse = client.bulk(request, RequestOptions.DEFAULT);
 157                                 if(bulkResponse.hasFailures()) {
 158                                         log.debug(bulkResponse.buildFailureMessage());
 159                                 }
 160                         } catch (IOException e) {
 161                                 log.error(topic.getName(), e);
 162                         }
 163                 }
 164
 165         }
 166
 167         /**
 168          *
 169          * @param topic
 170          * @param json
 171          * @return boolean
 172          *
 173          *         Because of query by id, The search API cannot be used for query. The
 174          *         search API can only query all data or based on the fields in the
 175          *         source. So use the get API, three parameters: index, type, document
 176          *         id
 177          */
 178         private boolean correlateClearedMessage(TopicConfig topic, JSONObject json) {
 179                 boolean found = false;
 180                 String eName = null;
 181
 182                 try {
 183                         eName = json.query("/event/commonEventHeader/eventName").toString();
 184
 185                         if (StringUtils.isNotBlank(eName) && eName.endsWith("Cleared")) {
 186
 187                                 String name = eName.substring(0, eName.length() - 7);
 188                                 String reportingEntityName = json.query("/event/commonEventHeader/reportingEntityName").toString();
 189                                 String specificProblem = json.query("/event/faultFields/specificProblem").toString();
 190
 191                                 String id = String.join("^", name, reportingEntityName, specificProblem);//example: id = "aaaa^cccc^bbbbb"
 192                                 String index = topic.getName().toLowerCase();
 193
 194                                 //get
 195                                 GetRequest getRequest = new GetRequest(index, config.getElasticsearchType(), id);
 196
 197                                 GetResponse getResponse = null;
 198                                 try {
 199                                         getResponse = client.get(getRequest, RequestOptions.DEFAULT);
 200                                         if (getResponse != null) {
 201
 202                                                 if (getResponse.isExists()) {
 203                                                         String sourceAsString = getResponse.getSourceAsString();
 204                                                         JSONObject jsonObject = new JSONObject(sourceAsString);
 205                                                         jsonObject.getJSONObject("event").getJSONObject("faultFields").put("vfStatus", "closed");
 206                                                         String jsonString = jsonObject.toString();
 207
 208                                                         //update
 209                                                         IndexRequest request = new IndexRequest(index, config.getElasticsearchType(), id);
 210                                                         request.source(jsonString, XContentType.JSON);
 211                                                         IndexResponse indexResponse = null;
 212                                                         try {
 213                                                                 indexResponse = client.index(request, RequestOptions.DEFAULT);
 214                                                                 found = true;
 215                                                         } catch (IOException e) {
 216                                                                 log.error("save failure");
 217                                                         }
 218                                                 } else {
 219                                                         log.error("The getResponse was not exists");
 220                                                 }
 221
 222                                         } else {
 223                                                 log.error("The document for this id was not found");
 224                                         }
 225
 226                                 } catch (ElasticsearchException e) {
 227                                         if (e.status() == RestStatus.NOT_FOUND) {
 228                                                 log.error("The document for this id was not found");
 229                                         }
 230                                         if (e.status() == RestStatus.CONFLICT) {
 231                                                 log.error("Version conflict");
 232                                         }
 233                                         log.error("Get document exception", e);
 234                                 } catch (IOException e) {
 235                                         log.error(topic.getName(), e);
 236                                 }
 237
 238                         }
 239
 240                 } catch (Exception e) {
 241                         log.error("error", e);
 242                 }
 243
 244                 return found;
 245         }
 246
 247 }