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.db;
  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.domain.EffectiveTopic;
  51 import org.onap.datalake.feeder.domain.Topic;
  52 import org.slf4j.Logger;
  53 import org.slf4j.LoggerFactory;
  54
  55 import org.springframework.beans.factory.annotation.Autowired;
  56 import org.springframework.context.annotation.Scope;
  57 import org.springframework.stereotype.Service;
  58
  59 /**
  60  * Elasticsearch Service for table creation, data submission, as well as data pre-processing.
  61  *
  62  * @author Guobiao Mo
  63  *
  64  */
  65 @Service
  66 @Scope("prototype")
  67 public class ElasticsearchService implements DbStoreService {
  68
  69         private final Logger log = LoggerFactory.getLogger(this.getClass());
  70
  71         private Db elasticsearch;
  72
  73         @Autowired
  74         private ApplicationConfiguration config;
  75
  76         private RestHighLevelClient client;
  77         ActionListener<BulkResponse> listener;
  78
  79         public ElasticsearchService(Db db) {
  80                 elasticsearch = db;
  81         }
  82
  83         //ES Encrypted communication https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/_encrypted_communication.html#_encrypted_communication
  84         //Basic authentication https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/_basic_authentication.html
  85         @PostConstruct
  86         @Override
  87         public void init() {
  88                 String elasticsearchHost = elasticsearch.getHost();
  89
  90                 // Initialize the Connection
  91                 client = new RestHighLevelClient(RestClient.builder(new HttpHost(elasticsearchHost, 9200, "http"), new HttpHost(elasticsearchHost, 9201, "http")));
  92
  93                 log.info("Connected to Elasticsearch Host {}", elasticsearchHost);
  94
  95                 listener = new ActionListener<BulkResponse>() {
  96                         @Override
  97                         public void onResponse(BulkResponse bulkResponse) {
  98                                 if(bulkResponse.hasFailures()) {
  99                                         log.debug(bulkResponse.buildFailureMessage());
 100                                 }
 101                         }
 102
 103                         @Override
 104                         public void onFailure(Exception e) {
 105                                 log.error(e.getMessage());
 106                         }
 107                 };
 108         }
 109
 110         @PreDestroy
 111         public void cleanUp() throws IOException {
 112                 config.getShutdownLock().readLock().lock();
 113
 114                 try {
 115                         log.info("cleanUp() closing Elasticsearch client.");
 116                         client.close();
 117                 } catch (IOException e) {
 118                         log.error("client.close() at cleanUp.", e);
 119                 } finally {
 120                         config.getShutdownLock().readLock().unlock();
 121                 }
 122         }
 123
 124         public void ensureTableExist(String topic) throws IOException {
 125                 String topicLower = topic.toLowerCase();
 126
 127                 GetIndexRequest request = new GetIndexRequest(topicLower);
 128
 129                 boolean exists = client.indices().exists(request, RequestOptions.DEFAULT);
 130                 if (!exists) {
 131                         //TODO submit mapping template
 132                         CreateIndexRequest createIndexRequest = new CreateIndexRequest(topicLower);
 133                         CreateIndexResponse createIndexResponse = client.indices().create(createIndexRequest, RequestOptions.DEFAULT);
 134                         log.info("{} : created {}", createIndexResponse.index(), createIndexResponse.isAcknowledged());
 135                 }
 136         }
 137
 138         //TTL is not supported in Elasticsearch 5.0 and later, what can we do? FIXME
 139         @Override
 140         public void saveJsons(EffectiveTopic effectiveTopic, List<JSONObject> jsons) {
 141
 142                 BulkRequest request = new BulkRequest();
 143
 144                 for (JSONObject json : jsons) {
 145                         if (effectiveTopic.getTopic().isCorrelateClearedMessage()) {
 146                                 boolean found = correlateClearedMessage(effectiveTopic.getTopic(), json);
 147                                 if (found) {
 148                                         continue;
 149                                 }
 150                         }
 151
 152                         String id = effectiveTopic.getTopic().getMessageId(json); //id can be null
 153
 154                         request.add(new IndexRequest(effectiveTopic.getName().toLowerCase(), config.getElasticsearchType(), id).source(json.toString(), XContentType.JSON));
 155                 }
 156
 157                 log.debug("saving text to effectiveTopic = {}, batch count = {} ", effectiveTopic, jsons.size());
 158
 159                 if (config.isAsync()) {
 160                         client.bulkAsync(request, RequestOptions.DEFAULT, listener);
 161                 } else {
 162                         try {
 163                                 BulkResponse bulkResponse = client.bulk(request, RequestOptions.DEFAULT);
 164                                 if(bulkResponse.hasFailures()) {
 165                                         log.debug(bulkResponse.buildFailureMessage());
 166                                 }
 167                         } catch (IOException e) {
 168                                 log.error(effectiveTopic.getName(), e);
 169                         }
 170                 }
 171
 172         }
 173
 174         /**
 175          *
 176          * @param topic
 177          * @param json
 178          * @return boolean
 179          *
 180          *         Because of query by id, The search API cannot be used for query. The
 181          *         search API can only query all data or based on the fields in the
 182          *         source. So use the get API, three parameters: index, type, document
 183          *         id
 184          */
 185         private boolean correlateClearedMessage(Topic topic, JSONObject json) {
 186                 boolean found = false;
 187                 String eName = null;
 188
 189                 try {
 190                         eName = json.query("/event/commonEventHeader/eventName").toString();
 191
 192                         if (StringUtils.isNotBlank(eName) && eName.endsWith("Cleared")) {
 193
 194                                 String name = eName.substring(0, eName.length() - 7);
 195                                 String reportingEntityName = json.query("/event/commonEventHeader/reportingEntityName").toString();
 196                                 String specificProblem = json.query("/event/faultFields/specificProblem").toString();
 197
 198                                 String id = String.join("^", name, reportingEntityName, specificProblem);//example: id = "aaaa^cccc^bbbbb"
 199                                 String index = topic.getName().toLowerCase();
 200
 201                                 //get
 202                                 GetRequest getRequest = new GetRequest(index, config.getElasticsearchType(), id);
 203
 204                                 GetResponse getResponse = null;
 205                                 try {
 206                                         getResponse = client.get(getRequest, RequestOptions.DEFAULT);
 207                                         if (getResponse != null) {
 208
 209                                                 if (getResponse.isExists()) {
 210                                                         String sourceAsString = getResponse.getSourceAsString();
 211                                                         JSONObject jsonObject = new JSONObject(sourceAsString);
 212                                                         jsonObject.getJSONObject("event").getJSONObject("faultFields").put("vfStatus", "closed");
 213                                                         String jsonString = jsonObject.toString();
 214
 215                                                         //update
 216                                                         IndexRequest request = new IndexRequest(index, config.getElasticsearchType(), id);
 217                                                         request.source(jsonString, XContentType.JSON);
 218                                                         IndexResponse indexResponse = null;
 219                                                         try {
 220                                                                 indexResponse = client.index(request, RequestOptions.DEFAULT);
 221                                                                 found = true;
 222                                                         } catch (IOException e) {
 223                                                                 log.error("save failure");
 224                                                         }
 225                                                 } else {
 226                                                         log.error("The getResponse was not exists");
 227                                                 }
 228
 229                                         } else {
 230                                                 log.error("The document for this id was not found");
 231                                         }
 232
 233                                 } catch (ElasticsearchException e) {
 234                                         if (e.status() == RestStatus.NOT_FOUND) {
 235                                                 log.error("The document for this id was not found");
 236                                         }
 237                                         if (e.status() == RestStatus.CONFLICT) {
 238                                                 log.error("Version conflict");
 239                                         }
 240                                         log.error("Get document exception", e);
 241                                 } catch (IOException e) {
 242                                         log.error(topic.getName(), e);
 243                                 }
 244
 245                         }
 246
 247                 } catch (Exception e) {
 248                         log.error("error", e);
 249                 }
 250
 251                 return found;
 252         }
 253
 254 }