catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/JanusGraphDao.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   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 package org.openecomp.sdc.be.dao.jsongraph;
  21
  22 import static org.apache.commons.collections.CollectionUtils.isEmpty;
  23
  24 import fj.data.Either;
  25 import java.io.IOException;
  26 import java.util.ArrayList;
  27 import java.util.HashMap;
  28 import java.util.Iterator;
  29 import java.util.List;
  30 import java.util.Map;
  31 import java.util.Map.Entry;
  32 import java.util.function.Predicate;
  33 import java.util.stream.Collectors;
  34 import java.util.stream.StreamSupport;
  35 import java.util.Optional;
  36 import org.apache.commons.collections.MapUtils;
  37 import org.apache.commons.lang.StringUtils;
  38 import org.apache.commons.lang3.tuple.ImmutablePair;
  39 import org.apache.tinkerpop.gremlin.structure.Direction;
  40 import org.apache.tinkerpop.gremlin.structure.Edge;
  41 import org.apache.tinkerpop.gremlin.structure.Element;
  42 import org.apache.tinkerpop.gremlin.structure.Property;
  43 import org.apache.tinkerpop.gremlin.structure.Vertex;
  44 import org.apache.tinkerpop.gremlin.structure.util.ElementHelper;
  45 import org.janusgraph.core.JanusGraph;
  46 import org.janusgraph.core.JanusGraphEdge;
  47 import org.janusgraph.core.JanusGraphQuery;
  48 import org.janusgraph.core.JanusGraphVertex;
  49 import org.janusgraph.core.JanusGraphVertexQuery;
  50 import org.janusgraph.core.PropertyKey;
  51 import org.janusgraph.graphdb.query.JanusGraphPredicate;
  52 import org.openecomp.sdc.be.dao.janusgraph.JanusGraphClient;
  53 import org.openecomp.sdc.be.dao.janusgraph.JanusGraphOperationStatus;
  54 import org.openecomp.sdc.be.dao.jsongraph.types.EdgeLabelEnum;
  55 import org.openecomp.sdc.be.dao.jsongraph.types.EdgePropertyEnum;
  56 import org.openecomp.sdc.be.dao.jsongraph.types.JsonParseFlagEnum;
  57 import org.openecomp.sdc.be.dao.jsongraph.types.VertexTypeEnum;
  58 import org.openecomp.sdc.be.dao.jsongraph.utils.JsonParserUtils;
  59 import org.openecomp.sdc.be.dao.neo4j.GraphEdgeLabels;
  60 import org.openecomp.sdc.be.datatypes.enums.ComponentTypeEnum;
  61 import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
  62 import org.openecomp.sdc.be.datatypes.tosca.ToscaDataDefinition;
  63 import org.openecomp.sdc.common.jsongraph.util.CommonUtility;
  64 import org.openecomp.sdc.common.jsongraph.util.CommonUtility.LogLevelEnum;
  65 import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
  66 import org.openecomp.sdc.common.log.wrappers.Logger;
  67 import org.springframework.beans.factory.annotation.Qualifier;
  68
  69 public class JanusGraphDao {
  70
  71     private static Logger logger = Logger.getLogger(JanusGraphDao.class.getName());
  72     JanusGraphClient janusGraphClient;
  73
  74     public JanusGraphDao(@Qualifier("janusgraph-client") JanusGraphClient janusGraphClient) {
  75         this.janusGraphClient = janusGraphClient;
  76         logger.info("** JanusGraphDao created");
  77     }
  78
  79     public JanusGraphOperationStatus commit() {
  80         logger.debug("#commit - The operation succeeded. Doing commit...");
  81         return janusGraphClient.commit();
  82     }
  83
  84     public JanusGraphOperationStatus rollback() {
  85         logger.debug("#rollback - The operation failed. Doing rollback...");
  86         return janusGraphClient.rollback();
  87     }
  88
  89     public Either<JanusGraph, JanusGraphOperationStatus> getGraph() {
  90         return janusGraphClient.getGraph();
  91     }
  92
  93     /**
  94      * @param graphVertex
  95      * @return
  96      */
  97     public Either<GraphVertex, JanusGraphOperationStatus> createVertex(GraphVertex graphVertex) {
  98         logger.trace("try to create vertex for ID [{}]", graphVertex.getUniqueId());
  99         Either<JanusGraph, JanusGraphOperationStatus> graph = janusGraphClient.getGraph();
 100         if (graph.isLeft()) {
 101             try {
 102                 JanusGraph tGraph = graph.left().value();
 103                 JanusGraphVertex vertex = tGraph.addVertex();
 104                 setVertexProperties(vertex, graphVertex);
 105                 graphVertex.setVertex(vertex);
 106                 return Either.left(graphVertex);
 107             } catch (Exception e) {
 108                 logger
 109                     .error(EcompLoggerErrorCode.DATA_ERROR, "JanusGraphDao", "Failed to create Node for ID '{}'", (Object) graphVertex.getUniqueId(),
 110                         e);
 111                 return Either.right(JanusGraphClient.handleJanusGraphException(e));
 112             }
 113         } else {
 114             logger.debug("Failed to create vertex for ID '{}' {}", graphVertex.getUniqueId(), graph.right().value());
 115             return Either.right(graph.right().value());
 116         }
 117     }
 118
 119     /**
 120      * @param name
 121      * @param value
 122      * @param label
 123      * @return
 124      */
 125     public Either<GraphVertex, JanusGraphOperationStatus> getVertexByPropertyAndLabel(GraphPropertyEnum name, Object value, VertexTypeEnum label) {
 126         return getVertexByPropertyAndLabel(name, value, label, JsonParseFlagEnum.ParseAll);
 127     }
 128
 129     public Either<GraphVertex, JanusGraphOperationStatus> getVertexByLabel(VertexTypeEnum label) {
 130         return janusGraphClient.getGraph().left().map(graph -> graph.query().has(GraphPropertyEnum.LABEL.getProperty(), label.getName()).vertices())
 131             .left().bind(janusGraphVertices -> getFirstFoundVertex(JsonParseFlagEnum.NoParse, janusGraphVertices));
 132     }
 133
 134     private Either<GraphVertex, JanusGraphOperationStatus> getFirstFoundVertex(JsonParseFlagEnum parseFlag, Iterable<JanusGraphVertex> vertices) {
 135         Iterator<JanusGraphVertex> iterator = vertices.iterator();
 136         if (iterator.hasNext()) {
 137             JanusGraphVertex vertex = iterator.next();
 138             GraphVertex graphVertex = createAndFill(vertex, parseFlag);
 139             return Either.left(graphVertex);
 140         }
 141         return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 142     }
 143
 144     /**
 145      * @param name
 146      * @param value
 147      * @param label
 148      * @param parseFlag
 149      * @return
 150      */
 151     public Either<GraphVertex, JanusGraphOperationStatus> getVertexByPropertyAndLabel(GraphPropertyEnum name, Object value, VertexTypeEnum label,
 152                                                                                       JsonParseFlagEnum parseFlag) {
 153         Either<JanusGraph, JanusGraphOperationStatus> graph = janusGraphClient.getGraph();
 154         if (graph.isLeft()) {
 155             try {
 156                 JanusGraph tGraph = graph.left().value();
 157                 @SuppressWarnings("unchecked") Iterable<JanusGraphVertex> vertecies = tGraph.query().has(name.getProperty(), value)
 158                     .has(GraphPropertyEnum.LABEL.getProperty(), label.getName()).vertices();
 159                 java.util.Iterator<JanusGraphVertex> iterator = vertecies.iterator();
 160                 if (iterator.hasNext()) {
 161                     JanusGraphVertex vertex = iterator.next();
 162                     GraphVertex graphVertex = createAndFill(vertex, parseFlag);
 163                     return Either.left(graphVertex);
 164                 }
 165                 if (logger.isDebugEnabled()) {
 166                     logger.debug("No vertex in graph for key = {}  and value = {}   label = {}", name, value, label);
 167                 }
 168                 return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 169             } catch (Exception e) {
 170                 if (logger.isDebugEnabled()) {
 171                     logger.debug("Failed to get vertex in graph for key ={} and value = {}  label = {}", name, value, label);
 172                 }
 173                 return Either.right(JanusGraphClient.handleJanusGraphException(e));
 174             }
 175         } else {
 176             if (logger.isDebugEnabled()) {
 177                 logger.debug("No vertex in graph for key ={} and value = {}  label = {} error :{}", name, value, label, graph.right().value());
 178             }
 179             return Either.right(graph.right().value());
 180         }
 181     }
 182
 183     /**
 184      * @param id
 185      * @return
 186      */
 187     public Either<GraphVertex, JanusGraphOperationStatus> getVertexById(String id) {
 188         return getVertexById(id, JsonParseFlagEnum.ParseAll);
 189     }
 190
 191     /**
 192      * @param id
 193      * @param parseFlag
 194      * @return
 195      */
 196     public Either<GraphVertex, JanusGraphOperationStatus> getVertexById(String id, JsonParseFlagEnum parseFlag) {
 197         Either<JanusGraph, JanusGraphOperationStatus> graph = janusGraphClient.getGraph();
 198         if (id == null) {
 199             if (logger.isDebugEnabled()) {
 200                 logger.debug("No vertex in graph for id = {} ", id);
 201             }
 202             return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 203         }
 204         if (graph.isLeft()) {
 205             try {
 206                 JanusGraph tGraph = graph.left().value();
 207                 @SuppressWarnings("unchecked") Iterable<JanusGraphVertex> vertecies = tGraph.query()
 208                     .has(GraphPropertyEnum.UNIQUE_ID.getProperty(), id).vertices();
 209                 java.util.Iterator<JanusGraphVertex> iterator = vertecies.iterator();
 210                 if (iterator.hasNext()) {
 211                     JanusGraphVertex vertex = iterator.next();
 212                     GraphVertex graphVertex = createAndFill(vertex, parseFlag);
 213                     return Either.left(graphVertex);
 214                 } else {
 215                     if (logger.isDebugEnabled()) {
 216                         logger.debug("No vertex in graph for id = {}", id);
 217                     }
 218                     return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 219                 }
 220             } catch (Exception e) {
 221                 if (logger.isDebugEnabled()) {
 222                     logger.debug("Failed to get vertex in graph for id {} ", id);
 223                 }
 224                 return Either.right(JanusGraphClient.handleJanusGraphException(e));
 225             }
 226         } else {
 227             if (logger.isDebugEnabled()) {
 228                 logger.debug("No vertex in graph for id {} error : {}", id, graph.right().value());
 229             }
 230             return Either.right(graph.right().value());
 231         }
 232     }
 233
 234     private void setVertexProperties(JanusGraphVertex vertex, GraphVertex graphVertex) throws IOException {
 235         if (graphVertex.getMetadataProperties() != null) {
 236             for (Map.Entry<GraphPropertyEnum, Object> entry : graphVertex.getMetadataProperties().entrySet()) {
 237                 if (entry.getValue() != null) {
 238                     vertex.property(entry.getKey().getProperty(), entry.getValue());
 239                 }
 240             }
 241         }
 242         vertex.property(GraphPropertyEnum.LABEL.getProperty(), graphVertex.getLabel().getName());
 243         Map<String, ? extends ToscaDataDefinition> json = graphVertex.getJson();
 244         if (json != null) {
 245             String jsonStr = JsonParserUtils.toJson(json);
 246             vertex.property(GraphPropertyEnum.JSON.getProperty(), jsonStr);
 247         }
 248         Map<String, Object> jsonMetadata = graphVertex.getMetadataJson();
 249         if (jsonMetadata != null) {
 250             String jsonMetadataStr = JsonParserUtils.toJson(jsonMetadata);
 251             vertex.property(GraphPropertyEnum.METADATA.getProperty(), jsonMetadataStr);
 252         }
 253     }
 254
 255     public void setVertexProperties(Vertex vertex, Map<String, Object> properties) throws IOException {
 256         for (Map.Entry<String, Object> entry : properties.entrySet()) {
 257             if (entry.getValue() != null) {
 258                 vertex.property(entry.getKey(), entry.getValue());
 259             }
 260         }
 261     }
 262
 263     private GraphVertex createAndFill(JanusGraphVertex vertex, JsonParseFlagEnum parseFlag) {
 264         GraphVertex graphVertex = new GraphVertex();
 265         graphVertex.setVertex(vertex);
 266         parseVertexProperties(graphVertex, parseFlag);
 267         return graphVertex;
 268     }
 269
 270     public void parseVertexProperties(GraphVertex graphVertex, JsonParseFlagEnum parseFlag) {
 271         JanusGraphVertex vertex = graphVertex.getVertex();
 272         Map<GraphPropertyEnum, Object> properties = getVertexProperties(vertex);
 273         VertexTypeEnum label = VertexTypeEnum.getByName((String) (properties.get(GraphPropertyEnum.LABEL)));
 274         for (Map.Entry<GraphPropertyEnum, Object> entry : properties.entrySet()) {
 275             GraphPropertyEnum key = entry.getKey();
 276             switch (key) {
 277                 case UNIQUE_ID:
 278                     graphVertex.setUniqueId((String) entry.getValue());
 279                     break;
 280                 case LABEL:
 281                     graphVertex.setLabel(VertexTypeEnum.getByName((String) entry.getValue()));
 282                     break;
 283                 case COMPONENT_TYPE:
 284                     String type = (String) entry.getValue();
 285                     if (type != null) {
 286                         graphVertex.setType(ComponentTypeEnum.valueOf(type));
 287                     }
 288                     break;
 289                 case JSON:
 290                     if (parseFlag == JsonParseFlagEnum.ParseAll || parseFlag == JsonParseFlagEnum.ParseJson) {
 291                         String json = (String) entry.getValue();
 292                         Map<String, ? extends ToscaDataDefinition> jsonObj = JsonParserUtils.toMap(json, label.getClassOfJson());
 293                         graphVertex.setJson(jsonObj);
 294                     }
 295                     break;
 296                 case METADATA:
 297                     if (parseFlag == JsonParseFlagEnum.ParseAll || parseFlag == JsonParseFlagEnum.ParseMetadata) {
 298                         String json = (String) entry.getValue();
 299                         Map<String, Object> metadatObj = JsonParserUtils.toMap(json);
 300                         graphVertex.setMetadataJson(metadatObj);
 301                     }
 302                     break;
 303                 default:
 304                     graphVertex.addMetadataProperty(key, entry.getValue());
 305                     break;
 306             }
 307         }
 308     }
 309
 310     public JanusGraphOperationStatus createEdge(GraphVertex from, GraphVertex to, EdgeLabelEnum label, Map<EdgePropertyEnum, Object> properties) {
 311         return createEdge(from.getVertex(), to.getVertex(), label, properties);
 312     }
 313
 314     public JanusGraphOperationStatus createEdge(Vertex from, Vertex to, EdgeLabelEnum label, Map<EdgePropertyEnum, Object> properties) {
 315         if (logger.isTraceEnabled()) {
 316             logger.trace("Try to connect {} with {} label {} properties {}",
 317                 from == null ? "NULL" : from.property(GraphPropertyEnum.UNIQUE_ID.getProperty()),
 318                 to == null ? "NULL" : to.property(GraphPropertyEnum.UNIQUE_ID.getProperty()), label, properties);
 319         }
 320         if (from == null || to == null) {
 321             logger.trace("No JanusGraph vertex for id from {} or id to {}",
 322                 from == null ? "NULL" : from.property(GraphPropertyEnum.UNIQUE_ID.getProperty()),
 323                 to == null ? "NULL" : to.property(GraphPropertyEnum.UNIQUE_ID.getProperty()));
 324             return JanusGraphOperationStatus.NOT_FOUND;
 325         }
 326         Edge edge = from.addEdge(label.name(), to);
 327         JanusGraphOperationStatus status;
 328         try {
 329             setEdgeProperties(edge, properties);
 330             status = JanusGraphOperationStatus.OK;
 331         } catch (IOException e) {
 332             logger.error(EcompLoggerErrorCode.DATA_ERROR, "JanusGraphDao", "Failed to set properties on edge  properties [{}]", properties, e);
 333             status = JanusGraphOperationStatus.GENERAL_ERROR;
 334         }
 335         return status;
 336     }
 337
 338     public Map<GraphPropertyEnum, Object> getVertexProperties(Element element) {
 339         Map<GraphPropertyEnum, Object> result = new HashMap<>();
 340         if (element != null && element.keys() != null && element.keys().size() > 0) {
 341             Map<String, Property> propertyMap = ElementHelper.propertyMap(element, element.keys().toArray(new String[element.keys().size()]));
 342             for (Entry<String, Property> entry : propertyMap.entrySet()) {
 343                 String key = entry.getKey();
 344                 Object value = entry.getValue().value();
 345                 GraphPropertyEnum valueOf = GraphPropertyEnum.getByProperty(key);
 346                 if (valueOf != null) {
 347                     result.put(valueOf, value);
 348                 }
 349             }
 350             // add print to properties that can't be converted by enum
 351         }
 352         return result;
 353     }
 354
 355     public Map<EdgePropertyEnum, Object> getEdgeProperties(Element element) {
 356         Map<EdgePropertyEnum, Object> result = new HashMap<>();
 357         if (element != null && element.keys() != null && element.keys().size() > 0) {
 358             Map<String, Property> propertyMap = ElementHelper.propertyMap(element, element.keys().toArray(new String[element.keys().size()]));
 359             for (Entry<String, Property> entry : propertyMap.entrySet()) {
 360                 String key = entry.getKey();
 361                 Object value = entry.getValue().value();
 362                 EdgePropertyEnum valueOf = EdgePropertyEnum.getByProperty(key);
 363                 if (valueOf != null) {
 364                     if (valueOf == EdgePropertyEnum.INSTANCES) {
 365                         List<String> list = JsonParserUtils.toList((String) value, String.class);
 366                         result.put(valueOf, list);
 367                     } else {
 368                         result.put(valueOf, value);
 369                     }
 370                 }
 371             }
 372         }
 373         return result;
 374     }
 375
 376     public void setEdgeProperties(Element element, Map<EdgePropertyEnum, Object> properties) throws IOException {
 377         if (properties != null && !properties.isEmpty()) {
 378             Object[] propertyKeyValues = new Object[properties.size() * 2];
 379             int i = 0;
 380             for (Entry<EdgePropertyEnum, Object> entry : properties.entrySet()) {
 381                 propertyKeyValues[i++] = entry.getKey().getProperty();
 382                 Object value = entry.getValue();
 383                 if (entry.getKey() == EdgePropertyEnum.INSTANCES) {
 384                     String jsonStr = JsonParserUtils.toJson(value);
 385                     propertyKeyValues[i++] = jsonStr;
 386                 } else {
 387                     propertyKeyValues[i++] = entry.getValue();
 388                 }
 389             }
 390             ElementHelper.attachProperties(element, propertyKeyValues);
 391         }
 392     }
 393
 394     public Either<List<GraphVertex>, JanusGraphOperationStatus> getByCriteria(VertexTypeEnum type, Map<GraphPropertyEnum, Object> props) {
 395         return getByCriteria(type, props, JsonParseFlagEnum.ParseAll);
 396     }
 397
 398     public Either<List<GraphVertex>, JanusGraphOperationStatus> getByCriteria(VertexTypeEnum type, Map<GraphPropertyEnum, Object> props,
 399                                                                               JsonParseFlagEnum parseFlag) {
 400         Either<JanusGraph, JanusGraphOperationStatus> graph = janusGraphClient.getGraph();
 401         if (graph.isLeft()) {
 402             try {
 403                 JanusGraph tGraph = graph.left().value();
 404                 JanusGraphQuery<? extends JanusGraphQuery> query = tGraph.query();
 405                 if (type != null) {
 406                     query = query.has(GraphPropertyEnum.LABEL.getProperty(), type.getName());
 407                 }
 408                 if (props != null && !props.isEmpty()) {
 409                     for (Map.Entry<GraphPropertyEnum, Object> entry : props.entrySet()) {
 410                         query = query.has(entry.getKey().getProperty(), entry.getValue());
 411                     }
 412                 }
 413                 Iterable<JanusGraphVertex> vertices = query.vertices();
 414                 if (vertices == null) {
 415                     return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 416                 }
 417                 Iterator<JanusGraphVertex> iterator = vertices.iterator();
 418                 List<GraphVertex> result = new ArrayList<>();
 419                 while (iterator.hasNext()) {
 420                     JanusGraphVertex vertex = iterator.next();
 421                     Map<GraphPropertyEnum, Object> newProp = getVertexProperties(vertex);
 422                     GraphVertex graphVertex = createAndFill(vertex, parseFlag);
 423                     result.add(graphVertex);
 424                 }
 425                 if (logger.isDebugEnabled()) {
 426                     logger
 427                         .debug("Number of fetced nodes in graph for criteria : from type = {} and properties = {} is {}", type, props, result.size());
 428                 }
 429                 if (result.size() == 0) {
 430                     return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 431                 }
 432                 return Either.left(result);
 433             } catch (Exception e) {
 434                 if (logger.isDebugEnabled()) {
 435                     logger.debug("Failed  get by  criteria for type = {} and properties = {}", type, props, e);
 436                 }
 437                 return Either.right(JanusGraphClient.handleJanusGraphException(e));
 438             }
 439         } else {
 440             if (logger.isDebugEnabled()) {
 441                 logger.debug("Failed  get by  criteria for type ={} and properties = {} error : {}", type, props, graph.right().value());
 442             }
 443             return Either.right(graph.right().value());
 444         }
 445     }
 446
 447     public Either<List<GraphVertex>, JanusGraphOperationStatus> getByCriteria(VertexTypeEnum type, Map<GraphPropertyEnum, Object> props,
 448                                                                               Map<GraphPropertyEnum, Object> hasNotProps,
 449                                                                               JsonParseFlagEnum parseFlag,
 450                                                                               String model) {
 451         return getByCriteria(type, props, hasNotProps, null, parseFlag, model);
 452     }
 453
 454     public Either<List<GraphVertex>, JanusGraphOperationStatus> getByCriteria(final VertexTypeEnum type,
 455                                                                               final Map<GraphPropertyEnum, Object> hasProps,
 456                                                                               final Map<GraphPropertyEnum, Object> hasNotProps,
 457                                                                               final Map<String, Entry<JanusGraphPredicate, Object>> predicates,
 458                                                                               final JsonParseFlagEnum parseFlag,
 459                                                                               final String model) {
 460         Either<JanusGraph, JanusGraphOperationStatus> graph = janusGraphClient.getGraph();
 461         if (graph.isLeft()) {
 462             try {
 463                 JanusGraph tGraph = graph.left().value();
 464                 JanusGraphQuery<? extends JanusGraphQuery> query = tGraph.query();
 465
 466                 if (type != null) {
 467                     query = query.has(GraphPropertyEnum.LABEL.getProperty(), type.getName());
 468                 }
 469                 if (hasProps != null && !hasProps.isEmpty()) {
 470                     for (Map.Entry<GraphPropertyEnum, Object> entry : hasProps.entrySet()) {
 471                         query = query.has(entry.getKey().getProperty(), entry.getValue());
 472                     }
 473                 }
 474                 if (hasNotProps != null && !hasNotProps.isEmpty()) {
 475                     for (Map.Entry<GraphPropertyEnum, Object> entry : hasNotProps.entrySet()) {
 476                         if (entry.getValue() instanceof List) {
 477                             buildMultipleNegateQueryFromList(entry, query);
 478                         } else {
 479                             query = query.hasNot(entry.getKey().getProperty(), entry.getValue());
 480                         }
 481                     }
 482                 }
 483                 if (predicates != null && !predicates.isEmpty()) {
 484                     for (Map.Entry<String, Entry<JanusGraphPredicate, Object>> entry : predicates.entrySet()) {
 485                         JanusGraphPredicate predicate = entry.getValue().getKey();
 486                         Object object = entry.getValue().getValue();
 487                         query = query.has(entry.getKey(), predicate, object);
 488                     }
 489                 }
 490                 Iterable<JanusGraphVertex> vertices = query.vertices();
 491                 if (vertices == null || !vertices.iterator().hasNext()) {
 492                     return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 493                 }
 494                 List<GraphVertex> result = new ArrayList<>();
 495
 496                 final Predicate<? super JanusGraphVertex> filterPredicate = StringUtils.isEmpty(model) ? this::vertexNotConnectedToAnyModel : vertex -> vertexValidForModel(vertex, model);
 497                 final List<JanusGraphVertex> verticesForModel = StreamSupport.stream(vertices.spliterator(), false).filter(filterPredicate).collect(Collectors.toList());
 498                 if (verticesForModel == null || verticesForModel.size() == 0) {
 499                     return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 500                 }
 501
 502                 verticesForModel.forEach(vertex ->  result.add(createAndFill(vertex, parseFlag)));
 503                 if (logger.isDebugEnabled()) {
 504                     logger.debug("Number of fetched nodes in graph for criteria : from type '{}' and properties '{}' is '{}'", type, hasProps,
 505                         result.size());
 506                 }
 507                 return Either.left(result);
 508             } catch (Exception e) {
 509                 if (logger.isDebugEnabled()) {
 510                     logger.debug("Failed to get by criteria for type '{}' and properties '{}'", type, hasProps, e);
 511                 }
 512                 return Either.right(JanusGraphClient.handleJanusGraphException(e));
 513             }
 514         } else {
 515             if (logger.isDebugEnabled()) {
 516                 logger.debug("Failed to get by criteria for type '{}' and properties '{}'. Error : '{}'", type, hasProps, graph.right().value());
 517             }
 518             return Either.right(graph.right().value());
 519         }
 520     }
 521
 522     public Either<List<GraphVertex>, JanusGraphOperationStatus> getByCriteria(VertexTypeEnum type,
 523             Map<GraphPropertyEnum, Object> props, Map<GraphPropertyEnum, Object> hasNotProps,
 524             JsonParseFlagEnum parseFlag) {
 525         return getByCriteria(type, props, hasNotProps, null, parseFlag);
 526     }
 527
 528     public Either<List<GraphVertex>, JanusGraphOperationStatus> getByCriteria(final VertexTypeEnum type,
 529             final Map<GraphPropertyEnum, Object> hasProps, final Map<GraphPropertyEnum, Object> hasNotProps,
 530             final Map<String, Entry<JanusGraphPredicate, Object>> predicates, final JsonParseFlagEnum parseFlag) {
 531         Either<JanusGraph, JanusGraphOperationStatus> graph = janusGraphClient.getGraph();
 532         if (graph.isLeft()) {
 533             try {
 534                 JanusGraph tGraph = graph.left().value();
 535                 JanusGraphQuery<? extends JanusGraphQuery> query = tGraph.query();
 536
 537                 if (type != null) {
 538                     query = query.has(GraphPropertyEnum.LABEL.getProperty(), type.getName());
 539                 }
 540                 if (hasProps != null && !hasProps.isEmpty()) {
 541                     for (Map.Entry<GraphPropertyEnum, Object> entry : hasProps.entrySet()) {
 542                         query = query.has(entry.getKey().getProperty(), entry.getValue());
 543                     }
 544                 }
 545                 if (hasNotProps != null && !hasNotProps.isEmpty()) {
 546                     for (Map.Entry<GraphPropertyEnum, Object> entry : hasNotProps.entrySet()) {
 547                         if (entry.getValue() instanceof List) {
 548                             buildMultipleNegateQueryFromList(entry, query);
 549                         } else {
 550                             query = query.hasNot(entry.getKey().getProperty(), entry.getValue());
 551                         }
 552                     }
 553                 }
 554                 if (predicates != null && !predicates.isEmpty()) {
 555                     for (Map.Entry<String, Entry<JanusGraphPredicate, Object>> entry : predicates.entrySet()) {
 556                         JanusGraphPredicate predicate = entry.getValue().getKey();
 557                         Object object = entry.getValue().getValue();
 558                         query = query.has(entry.getKey(), predicate, object);
 559                     }
 560                 }
 561                 Iterable<JanusGraphVertex> vertices = query.vertices();
 562                 if (vertices == null || !vertices.iterator().hasNext()) {
 563                     return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 564                 }
 565                 List<GraphVertex> result = new ArrayList<>();
 566
 567                 vertices.forEach(vertex -> result.add(createAndFill(vertex, parseFlag)));
 568                 if (logger.isDebugEnabled()) {
 569                     logger.debug(
 570                             "Number of fetched nodes in graph for criteria : from type '{}' and properties '{}' is '{}'",
 571                             type, hasProps, result.size());
 572                 }
 573                 return Either.left(result);
 574             } catch (Exception e) {
 575                 if (logger.isDebugEnabled()) {
 576                     logger.debug("Failed to get by criteria for type '{}' and properties '{}'", type, hasProps, e);
 577                 }
 578                 return Either.right(JanusGraphClient.handleJanusGraphException(e));
 579             }
 580         } else {
 581             if (logger.isDebugEnabled()) {
 582                 logger.debug("Failed to get by criteria for type '{}' and properties '{}'. Error : '{}'", type,
 583                         hasProps, graph.right().value());
 584             }
 585             return Either.right(graph.right().value());
 586         }
 587     }
 588
 589     private boolean vertexValidForModel(final JanusGraphVertex vertex, final String model) {
 590         final Either<List<ImmutablePair<JanusGraphVertex, Edge>>, JanusGraphOperationStatus> modelVertices = getParentVerticies(vertex, GraphEdgeLabels.MODEL_ELEMENT);
 591
 592         if (modelVertices.isLeft()) {
 593             for (ImmutablePair<JanusGraphVertex, Edge> vertexPair : modelVertices.left().value()) {
 594                 if (model.equals((String)vertexPair.getLeft().property("name").value())) {
 595                     return true;
 596                 }
 597             }
 598         }
 599         return false;
 600     }
 601
 602     private Either<List<ImmutablePair<JanusGraphVertex, Edge>>, JanusGraphOperationStatus> getParentVerticies(
 603             final JanusGraphVertex rootVertex, final GraphEdgeLabels edgeType) {
 604         return getEdgeVerticies(rootVertex, Direction.IN, edgeType);
 605     }
 606
 607     private Either<List<ImmutablePair<JanusGraphVertex, Edge>>, JanusGraphOperationStatus> getEdgeVerticies(
 608             final JanusGraphVertex rootVertex, final Direction direction, final GraphEdgeLabels edgeType) {
 609         final List<ImmutablePair<JanusGraphVertex, Edge>> immutablePairs = new ArrayList<>();
 610         final Iterator<Edge> edgesCreatorIterator = rootVertex.edges(direction, edgeType.getProperty());
 611         if (edgesCreatorIterator != null) {
 612             while (edgesCreatorIterator.hasNext()) {
 613                 Edge edge = edgesCreatorIterator.next();
 614                 JanusGraphVertex vertex = Direction.OUT.equals(direction)? (JanusGraphVertex) edge.inVertex() : (JanusGraphVertex) edge.outVertex();
 615                 ImmutablePair<JanusGraphVertex, Edge> immutablePair = new ImmutablePair<>(vertex, edge);
 616                 immutablePairs.add(immutablePair);
 617             }
 618         }
 619         if (immutablePairs.isEmpty()) {
 620             return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 621         }
 622         return Either.left(immutablePairs);
 623     }
 624
 625     private boolean vertexNotConnectedToAnyModel(final JanusGraphVertex vertex) {
 626         String vt = (String)vertex.property(GraphPropertyEnum.LABEL.getProperty()).value();
 627         VertexTypeEnum vertexType = VertexTypeEnum.getByName(vt);
 628         EdgeLabelEnum edgeLabel = vertexType.equals(VertexTypeEnum.TOPOLOGY_TEMPLATE) ? EdgeLabelEnum.MODEL : EdgeLabelEnum.MODEL_ELEMENT;
 629         return !vertex.edges(Direction.IN, edgeLabel.name()).hasNext();
 630     }
 631
 632     public Either<Iterator<Vertex>, JanusGraphOperationStatus> getCatalogOrArchiveVerticies(boolean isCatalog) {
 633         Either<JanusGraph, JanusGraphOperationStatus> graph = janusGraphClient.getGraph();
 634         if (graph.isLeft()) {
 635             try {
 636                 JanusGraph tGraph = graph.left().value();
 637                 String name = isCatalog ? VertexTypeEnum.CATALOG_ROOT.getName() : VertexTypeEnum.ARCHIVE_ROOT.getName();
 638                 Iterable<JanusGraphVertex> vCatalogIter = tGraph.query().has(GraphPropertyEnum.LABEL.getProperty(), name).vertices();
 639                 if (vCatalogIter == null) {
 640                     logger.debug("Failed to fetch catalog vertex");
 641                     return Either.right(JanusGraphOperationStatus.GENERAL_ERROR);
 642                 }
 643                 JanusGraphVertex catalogV = vCatalogIter.iterator().next();
 644                 if (catalogV == null) {
 645                     logger.debug("Failed to fetch catalog vertex");
 646                     return Either.right(JanusGraphOperationStatus.GENERAL_ERROR);
 647                 }
 648                 String edgeLabel = isCatalog ? EdgeLabelEnum.CATALOG_ELEMENT.name() : EdgeLabelEnum.ARCHIVE_ELEMENT.name();
 649                 Iterator<Vertex> vertices = catalogV.vertices(Direction.OUT, edgeLabel);
 650                 return Either.left(vertices);
 651             } catch (Exception e) {
 652                 if (logger.isDebugEnabled()) {
 653                     logger.debug("Failed  get by  criteria: ", e);
 654                 }
 655                 return Either.right(JanusGraphClient.handleJanusGraphException(e));
 656             }
 657         } else {
 658             if (logger.isDebugEnabled()) {
 659                 logger.debug("Failed  get by  criteria : ", graph.right().value());
 660             }
 661             return Either.right(graph.right().value());
 662         }
 663     }
 664
 665     private void buildMultipleNegateQueryFromList(Map.Entry<GraphPropertyEnum, Object> entry, JanusGraphQuery query) {
 666         List<Object> negateList = (List<Object>) entry.getValue();
 667         for (Object listItem : negateList) {
 668             query.hasNot(entry.getKey().getProperty(), listItem);
 669         }
 670     }
 671
 672     /**
 673      * @param parentVertex
 674      * @param edgeLabel
 675      * @param parseFlag
 676      * @return
 677      */
 678     public Either<GraphVertex, JanusGraphOperationStatus> getChildVertex(GraphVertex parentVertex, EdgeLabelEnum edgeLabel,
 679                                                                          JsonParseFlagEnum parseFlag) {
 680         Either<List<GraphVertex>, JanusGraphOperationStatus> childrenVertecies = getChildrenVertices(parentVertex, edgeLabel, parseFlag);
 681         if (childrenVertecies.isRight()) {
 682             return Either.right(childrenVertecies.right().value());
 683         }
 684         return Either.left(childrenVertecies.left().value().get(0));
 685     }
 686
 687     /**
 688      * @param parentVertex
 689      * @param edgeLabel
 690      * @param parseFlag
 691      * @return
 692      */
 693     public Either<Vertex, JanusGraphOperationStatus> getChildVertex(Vertex parentVertex, EdgeLabelEnum edgeLabel, JsonParseFlagEnum parseFlag) {
 694         Either<List<Vertex>, JanusGraphOperationStatus> childrenVertecies = getChildrenVertices(parentVertex, edgeLabel, parseFlag);
 695         if (childrenVertecies.isRight()) {
 696             return Either.right(childrenVertecies.right().value());
 697         }
 698         return Either.left(childrenVertecies.left().value().get(0));
 699     }
 700
 701     public Either<GraphVertex, JanusGraphOperationStatus> getParentVertex(GraphVertex parentVertex, EdgeLabelEnum edgeLabel,
 702                                                                           JsonParseFlagEnum parseFlag) {
 703         Either<List<GraphVertex>, JanusGraphOperationStatus> childrenVertecies = getParentVertices(parentVertex, edgeLabel, parseFlag);
 704         if (childrenVertecies.isRight()) {
 705             return Either.right(childrenVertecies.right().value());
 706         }
 707         if (isEmpty(childrenVertecies.left().value())) {
 708             return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 709         }
 710         return Either.left(childrenVertecies.left().value().get(0));
 711     }
 712
 713     public Either<Vertex, JanusGraphOperationStatus> getParentVertex(Vertex parentVertex, EdgeLabelEnum edgeLabel, JsonParseFlagEnum parseFlag) {
 714         Either<List<Vertex>, JanusGraphOperationStatus> childrenVertecies = getParentVertices(parentVertex, edgeLabel, parseFlag);
 715         if (childrenVertecies.isRight()) {
 716             return Either.right(childrenVertecies.right().value());
 717         }
 718         if (isEmpty(childrenVertecies.left().value())) {
 719             return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 720         }
 721         return Either.left(childrenVertecies.left().value().get(0));
 722     }
 723
 724     /**
 725      * @param parentVertex
 726      * @param edgeLabel
 727      * @param parseFlag
 728      * @return
 729      */
 730     public Either<List<GraphVertex>, JanusGraphOperationStatus> getChildrenVertices(GraphVertex parentVertex, EdgeLabelEnum edgeLabel,
 731                                                                                     JsonParseFlagEnum parseFlag) {
 732         return getAdjacentVertices(parentVertex, edgeLabel, parseFlag, Direction.OUT);
 733     }
 734
 735     public Either<List<GraphVertex>, JanusGraphOperationStatus> getParentVertices(GraphVertex parentVertex, EdgeLabelEnum edgeLabel,
 736                                                                                   JsonParseFlagEnum parseFlag) {
 737         return getAdjacentVertices(parentVertex, edgeLabel, parseFlag, Direction.IN);
 738     }
 739
 740     public Either<List<Vertex>, JanusGraphOperationStatus> getParentVertices(Vertex parentVertex, EdgeLabelEnum edgeLabel,
 741                                                                              JsonParseFlagEnum parseFlag) {
 742         return getAdjacentVertices(parentVertex, edgeLabel, parseFlag, Direction.IN);
 743     }
 744
 745     private Either<List<Vertex>, JanusGraphOperationStatus> getAdjacentVertices(Vertex parentVertex, EdgeLabelEnum edgeLabel,
 746                                                                                 JsonParseFlagEnum parseFlag, Direction direction) {
 747         List<Vertex> list = new ArrayList<>();
 748         try {
 749             Either<JanusGraph, JanusGraphOperationStatus> graphRes = janusGraphClient.getGraph();
 750             if (graphRes.isRight()) {
 751                 logger.error("Failed to retrieve graph. status is {}", graphRes);
 752                 return Either.right(graphRes.right().value());
 753             }
 754             Iterator<Edge> edgesCreatorIterator = parentVertex.edges(direction, edgeLabel.name());
 755             if (edgesCreatorIterator != null) {
 756                 while (edgesCreatorIterator.hasNext()) {
 757                     Edge edge = edgesCreatorIterator.next();
 758                     JanusGraphVertex vertex;
 759                     if (direction == Direction.IN) {
 760                         vertex = (JanusGraphVertex) edge.outVertex();
 761                     } else {
 762                         vertex = (JanusGraphVertex) edge.inVertex();
 763                     }
 764                     // GraphVertex graphVertex = createAndFill(vertex, parseFlag);
 765                     list.add(vertex);
 766                 }
 767             }
 768             if (list.isEmpty()) {
 769                 return Either.right(JanusGraphOperationStatus.NOT_FOUND);
 770             }
 771         } catch (Exception e) {
 772             logger.error("Failed to perform graph operation ", e);
 773             Either.right(JanusGraphClient.handleJanusGraphException(e));
 774         }
 775         return Either.left(list);
 776     }
 777
 778     /**
 779      * @param parentVertex
 780      * @param edgeLabel
 781      * @param parseFlag
 782      * @return
 783      */
 784     public Either<List<Vertex>, JanusGraphOperationStatus> getChildrenVertices(Vertex parentVertex, EdgeLabelEnum edgeLabel,
 785                                                                                JsonParseFlagEnum parseFlag) {
 786         return getAdjacentVertices(parentVertex, edgeLabel, parseFlag, Direction.OUT);
 787     }
 788
 789     private Either<List<GraphVertex>, JanusGraphOperationStatus> getAdjacentVertices(GraphVertex parentVertex, EdgeLabelEnum edgeLabel,
 790                                                                                      JsonParseFlagEnum parseFlag, Direction direction) {
 791         List<GraphVertex> list = new ArrayList<>();
 792         Either<List<Vertex>, JanusGraphOperationStatus> adjacentVerticies = getAdjacentVertices(parentVertex.getVertex(), edgeLabel, parseFlag,
 793             direction);
 794         if (adjacentVerticies.isRight()) {
 795             return Either.right(adjacentVerticies.right().value());
 796         }
 797         adjacentVerticies.left().value().stream().forEach(vertex -> {
 798             list.add(createAndFill((JanusGraphVertex) vertex, parseFlag));
 799         });
 800         return Either.left(list);
 801     }
 802
 803     /**
 804      * Searches Edge by received label and criteria
 805      *
 806      * @param vertex
 807      * @param label
 808      * @param properties
 809      * @return found edge or JanusGraphOperationStatus
 810      */
 811     public Either<Edge, JanusGraphOperationStatus> getBelongingEdgeByCriteria(GraphVertex vertex, EdgeLabelEnum label,
 812                                                                               Map<GraphPropertyEnum, Object> properties) {
 813         Either<Edge, JanusGraphOperationStatus> result = null;
 814         Edge matchingEdge = null;
 815         String notFoundMsg = "No edges in graph for criteria";
 816         try {
 817             JanusGraphVertexQuery<?> query = vertex.getVertex().query().labels(label.name());
 818             if (properties != null && !properties.isEmpty()) {
 819                 for (Map.Entry<GraphPropertyEnum, Object> entry : properties.entrySet()) {
 820                     query = query.has(entry.getKey().getProperty(), entry.getValue());
 821                 }
 822             }
 823             Iterable<JanusGraphEdge> edges = query.edges();
 824             if (edges == null) {
 825                 CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG, notFoundMsg);
 826                 result = Either.right(JanusGraphOperationStatus.NOT_FOUND);
 827             } else {
 828                 Iterator<JanusGraphEdge> eIter = edges.iterator();
 829                 if (eIter.hasNext()) {
 830                     matchingEdge = eIter.next();
 831                 } else {
 832                     CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG, notFoundMsg);
 833                     result = Either.right(JanusGraphOperationStatus.NOT_FOUND);
 834                 }
 835             }
 836             if (result == null) {
 837                 result = Either.left(matchingEdge);
 838             }
 839         } catch (Exception e) {
 840             CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG, "Exception occured during getting edge by criteria for component with id {}. {}",
 841                 vertex.getUniqueId(), e);
 842             return Either.right(JanusGraphClient.handleJanusGraphException(e));
 843         }
 844         return result;
 845     }
 846
 847     public Either<Edge, JanusGraphOperationStatus> getEdgeByChildrenVertexProperties(GraphVertex vertex, EdgeLabelEnum label,
 848                                                                                      Map<GraphPropertyEnum, Object> properties) {
 849         Either<Edge, JanusGraphOperationStatus> result = null;
 850         Edge matchingEdge = null;
 851         String notFoundMsg = "No edges in graph for criteria";
 852         try {
 853             Iterator<Edge> edges = vertex.getVertex().edges(Direction.OUT, label.name());
 854             while (edges.hasNext()) {
 855                 matchingEdge = edges.next();
 856                 Vertex childV = matchingEdge.inVertex();
 857                 Map<GraphPropertyEnum, Object> vertexProperties = getVertexProperties(childV);
 858                 Optional<Entry<GraphPropertyEnum, Object>> findNotMatch = properties.entrySet().stream()
 859                     .filter(e -> vertexProperties.get(e.getKey()) == null || !vertexProperties.get(e.getKey()).equals(e.getValue())).findFirst();
 860                 if (!findNotMatch.isPresent()) {
 861                     result = Either.left(matchingEdge);
 862                 }
 863             }
 864             if (result == null) {
 865                 //no match
 866                 CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG, notFoundMsg);
 867                 result = Either.right(JanusGraphOperationStatus.NOT_FOUND);
 868             }
 869         } catch (Exception e) {
 870             CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG, "Exception occured during getting edge by criteria for component with id {}. {}",
 871                 vertex.getUniqueId(), e);
 872             return Either.right(JanusGraphClient.handleJanusGraphException(e));
 873         }
 874         return result;
 875     }
 876
 877     /**
 878      * Deletes Edge by received label and criteria
 879      *
 880      * @param vertex
 881      * @param label
 882      * @param properties
 883      * @return
 884      */
 885     public Either<Edge, JanusGraphOperationStatus> deleteBelongingEdgeByCriteria(GraphVertex vertex, EdgeLabelEnum label,
 886                                                                                  Map<GraphPropertyEnum, Object> properties) {
 887         Either<Edge, JanusGraphOperationStatus> result = null;
 888         try {
 889             result = getBelongingEdgeByCriteria(vertex, label, properties);
 890             if (result.isLeft()) {
 891                 Edge edge = result.left().value();
 892                 CommonUtility
 893                     .addRecordToLog(logger, LogLevelEnum.TRACE, "Going to delete an edge with the label {} belonging to the vertex {} ", label.name(),
 894                         vertex.getUniqueId());
 895                 edge.remove();
 896                 result = Either.left(edge);
 897             } else {
 898                 CommonUtility
 899                     .addRecordToLog(logger, LogLevelEnum.DEBUG, "Failed to find an edge with the label {} belonging to the vertex {} ", label.name(),
 900                         vertex.getUniqueId());
 901             }
 902         } catch (Exception e) {
 903             CommonUtility
 904                 .addRecordToLog(logger, LogLevelEnum.DEBUG, "Exception occured during deleting an edge by criteria for the component with id {}. {}",
 905                     vertex == null ? "NULL" : vertex.getUniqueId(), e);
 906             return Either.right(JanusGraphClient.handleJanusGraphException(e));
 907         }
 908         return result;
 909     }
 910
 911     @SuppressWarnings("unchecked")
 912     /**
 913      * Deletes an edge between vertices fromVertex and toVertex according to received label
 914      *
 915      * @param fromVertex
 916      * @param toVertex
 917      * @param label
 918      * @return
 919      */
 920     public Either<Edge, JanusGraphOperationStatus> deleteEdge(GraphVertex fromVertex, GraphVertex toVertex, EdgeLabelEnum label) {
 921         return deleteEdge(fromVertex.getVertex(), toVertex.getVertex(), label, fromVertex.getUniqueId(), toVertex.getUniqueId(), false);
 922     }
 923
 924     public Either<Edge, JanusGraphOperationStatus> deleteAllEdges(GraphVertex fromVertex, GraphVertex toVertex, EdgeLabelEnum label) {
 925         return deleteEdge(fromVertex.getVertex(), toVertex.getVertex(), label, fromVertex.getUniqueId(), toVertex.getUniqueId(), true);
 926     }
 927
 928     public Either<Edge, JanusGraphOperationStatus> deleteEdge(JanusGraphVertex fromVertex, JanusGraphVertex toVertex, EdgeLabelEnum label,
 929                                                               String uniqueIdFrom, String uniqueIdTo, boolean deleteAll) {
 930         Either<Edge, JanusGraphOperationStatus> result = null;
 931         Vertex problemV = null;
 932         try {
 933             Iterable<JanusGraphEdge> edges = fromVertex.query().labels(label.name()).edges();
 934             Iterator<JanusGraphEdge> eIter = edges.iterator();
 935             while (eIter.hasNext()) {
 936                 Edge edge = eIter.next();
 937                 problemV = edge.inVertex();
 938                 String currVertexUniqueId = null;
 939                 try {
 940                     currVertexUniqueId = edge.inVertex().value(GraphPropertyEnum.UNIQUE_ID.getProperty());
 941                 } catch (Exception e) {
 942                     // AutoHealing procedure
 943                     logger.info("Corrupted vertex and edge were found and deleted {}", e);
 944                     if (problemV != null) {
 945                         Map<GraphPropertyEnum, Object> props = getVertexProperties(problemV);
 946                         logger.debug("problematic Vertex properties:");
 947                         logger.debug("props size: {}", props.size());
 948                         for (Map.Entry<GraphPropertyEnum, Object> entry : props.entrySet()) {
 949                             logger.debug("{}{}", entry.getKey() + ":" + entry.getValue());
 950                         }
 951                         Either<List<Vertex>, JanusGraphOperationStatus> childrenVertices = getChildrenVertices(problemV, EdgeLabelEnum.VERSION,
 952                             JsonParseFlagEnum.NoParse);
 953                         if (childrenVertices.isLeft()) {
 954                             childrenVertices.left().value().size();
 955                             logger.debug("number of children that problematic Vertex has: {}", props.size());
 956                         }
 957                         try {
 958                             edge.remove();
 959                         } catch (Exception e1) {
 960                             logger.debug("failed to remove problematic edge. {}", e1);
 961                         }
 962                         try {
 963                             problemV.remove();
 964                         } catch (Exception e2) {
 965                             logger.debug("failed to remove problematic vertex . {}", e2);
 966                         }
 967                     }
 968                     continue;
 969                 }
 970                 if (currVertexUniqueId != null && currVertexUniqueId.equals(uniqueIdTo)) {
 971                     CommonUtility.addRecordToLog(logger, LogLevelEnum.TRACE, "Going to delete an edge with the label {} between vertices {} and {}. ",
 972                         label.name(), uniqueIdFrom, uniqueIdTo);
 973                     edge.remove();
 974                     result = Either.left(edge);
 975                     if (!deleteAll) {
 976                         break;
 977                     }
 978                 }
 979             }
 980             if (result == null) {
 981                 CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG, "Failed to delete an edge with the label {} between vertices {} and {}. ",
 982                     label.name(), uniqueIdFrom, uniqueIdTo);
 983                 result = Either.right(JanusGraphOperationStatus.NOT_FOUND);
 984             }
 985         } catch (Exception e) {
 986             CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG,
 987                 "Exception occured during deleting an edge with the label {} between vertices {} and {}. {}", label.name(), uniqueIdFrom, uniqueIdTo,
 988                 e);
 989             return Either.right(JanusGraphClient.handleJanusGraphException(e));
 990         }
 991         return result;
 992     }
 993
 994     public JanusGraphOperationStatus deleteEdgeByDirection(GraphVertex fromVertex, Direction direction, EdgeLabelEnum label) {
 995         try {
 996             Iterator<Edge> edges = fromVertex.getVertex().edges(direction, label.name());
 997             while (edges.hasNext()) {
 998                 Edge edge = edges.next();
 999                 edge.remove();
1000             }
1001         } catch (Exception e) {
1002             logger.debug("Failed to remove from vertex {} edges {} by direction {} ", fromVertex.getUniqueId(), label, direction, e);
1003             return JanusGraphClient.handleJanusGraphException(e);
1004         }
1005         return JanusGraphOperationStatus.OK;
1006     }
1007
1008     /**
1009      * Updates vertex properties. Note that graphVertex argument should contain updated data
1010      *
1011      * @param graphVertex
1012      * @return
1013      */
1014     public Either<GraphVertex, JanusGraphOperationStatus> updateVertex(GraphVertex graphVertex) {
1015         CommonUtility.addRecordToLog(logger, LogLevelEnum.TRACE, "Going to update metadata of vertex with uniqueId {}. ", graphVertex.getUniqueId());
1016         try {
1017             graphVertex.updateMetadataJsonWithCurrentMetadataProperties();
1018             setVertexProperties(graphVertex.getVertex(), graphVertex);
1019         } catch (Exception e) {
1020             CommonUtility
1021                 .addRecordToLog(logger, LogLevelEnum.DEBUG, "Failed to update metadata of vertex with uniqueId {}. ", graphVertex.getUniqueId(), e);
1022             return Either.right(JanusGraphClient.handleJanusGraphException(e));
1023         }
1024         return Either.left(graphVertex);
1025     }
1026
1027     /**
1028      * Fetches vertices by uniqueId according to received parse flag
1029      *
1030      * @param verticesToGet
1031      * @return
1032      */
1033     public Either<Map<String, GraphVertex>, JanusGraphOperationStatus> getVerticesByUniqueIdAndParseFlag(
1034         Map<String, ImmutablePair<GraphPropertyEnum, JsonParseFlagEnum>> verticesToGet) {
1035         Either<Map<String, GraphVertex>, JanusGraphOperationStatus> result = null;
1036         Map<String, GraphVertex> vertices = new HashMap<>();
1037         JanusGraphOperationStatus titatStatus;
1038         Either<GraphVertex, JanusGraphOperationStatus> getVertexRes = null;
1039         for (Map.Entry<String, ImmutablePair<GraphPropertyEnum, JsonParseFlagEnum>> entry : verticesToGet.entrySet()) {
1040             if (entry.getValue().getKey() == GraphPropertyEnum.UNIQUE_ID) {
1041                 getVertexRes = getVertexById(entry.getKey(), entry.getValue().getValue());
1042             } else if (entry.getValue().getKey() == GraphPropertyEnum.USERID) {
1043                 getVertexRes = getVertexByPropertyAndLabel(entry.getValue().getKey(), entry.getKey(), VertexTypeEnum.USER,
1044                     entry.getValue().getValue());
1045             }
1046             if (getVertexRes == null) {
1047                 titatStatus = JanusGraphOperationStatus.ILLEGAL_ARGUMENT;
1048                 CommonUtility
1049                     .addRecordToLog(logger, LogLevelEnum.DEBUG, "Invalid vertex type label {} has been received. ", entry.getValue().getKey(),
1050                         titatStatus);
1051                 return Either.right(titatStatus);
1052             }
1053             if (getVertexRes.isRight()) {
1054                 titatStatus = getVertexRes.right().value();
1055                 CommonUtility
1056                     .addRecordToLog(logger, LogLevelEnum.DEBUG, "Failed to get vertex by id {} . Status is {}. ", entry.getKey(), titatStatus);
1057                 result = Either.right(titatStatus);
1058                 break;
1059             } else {
1060                 vertices.put(entry.getKey(), getVertexRes.left().value());
1061             }
1062         }
1063         if (result == null) {
1064             result = Either.left(vertices);
1065         }
1066         return result;
1067     }
1068
1069     /**
1070      * Creates edge between "from" and "to" vertices with specified label and properties extracted from received edge
1071      *
1072      * @param from
1073      * @param to
1074      * @param label
1075      * @param edgeToCopy
1076      * @return
1077      */
1078     public JanusGraphOperationStatus createEdge(Vertex from, Vertex to, EdgeLabelEnum label, Edge edgeToCopy) {
1079         return createEdge(from, to, label, getEdgeProperties(edgeToCopy));
1080     }
1081
1082     public JanusGraphOperationStatus replaceEdgeLabel(Vertex fromVertex, Vertex toVertex, Edge prevEdge, EdgeLabelEnum prevLabel,
1083                                                       EdgeLabelEnum newLabel) {
1084         CommonUtility
1085             .addRecordToLog(logger, LogLevelEnum.TRACE, "Going to replace edge with label {} to {} between vertices {} and {}", prevLabel, newLabel,
1086                 fromVertex != null ? fromVertex.property(GraphPropertyEnum.UNIQUE_ID.getProperty()) : "NULL",
1087                 toVertex != null ? toVertex.property(GraphPropertyEnum.UNIQUE_ID.getProperty()) : "NULL");
1088         JanusGraphOperationStatus result = createEdge(fromVertex, toVertex, newLabel, prevEdge);
1089         if (result == JanusGraphOperationStatus.OK) {
1090             prevEdge.remove();
1091         }
1092         return result;
1093     }
1094
1095     /**
1096      * Replaces previous label of edge with new label
1097      *
1098      * @param fromVertex
1099      * @param toVertex
1100      * @param prevLabel
1101      * @param newLabel
1102      * @return
1103      */
1104     public JanusGraphOperationStatus replaceEdgeLabel(Vertex fromVertex, Vertex toVertex, EdgeLabelEnum prevLabel, EdgeLabelEnum newLabel) {
1105         Iterator<Edge> prevEdgeIter = toVertex.edges(Direction.IN, prevLabel.name());
1106         if (prevEdgeIter == null || !prevEdgeIter.hasNext()) {
1107             CommonUtility
1108                 .addRecordToLog(logger, LogLevelEnum.DEBUG, "Failed to replace edge with label {} to {} between vertices {} and {}", prevLabel,
1109                     newLabel, fromVertex.property(GraphPropertyEnum.UNIQUE_ID.getProperty()),
1110                     toVertex.property(GraphPropertyEnum.UNIQUE_ID.getProperty()));
1111             return JanusGraphOperationStatus.NOT_FOUND;
1112         } else {
1113             return replaceEdgeLabel(fromVertex, toVertex, prevEdgeIter.next(), prevLabel, newLabel);
1114         }
1115     }
1116
1117     /**
1118      * Updates metadata properties of vertex on graph. Json metadata property of the vertex will be updated with received properties too.
1119      *
1120      * @param vertex
1121      * @param properties
1122      * @return
1123      */
1124     public JanusGraphOperationStatus updateVertexMetadataPropertiesWithJson(Vertex vertex, Map<GraphPropertyEnum, Object> properties) {
1125         try {
1126             if (!MapUtils.isEmpty(properties)) {
1127                 String jsonMetadataStr = (String) vertex.property(GraphPropertyEnum.METADATA.getProperty()).value();
1128                 Map<String, Object> jsonMetadataMap = JsonParserUtils.toMap(jsonMetadataStr);
1129                 for (Map.Entry<GraphPropertyEnum, Object> property : properties.entrySet()) {
1130                     vertex.property(property.getKey().getProperty(), property.getValue());
1131                     jsonMetadataMap.put(property.getKey().getProperty(), property.getValue());
1132                 }
1133                 vertex.property(GraphPropertyEnum.METADATA.getProperty(), JsonParserUtils.toJson(jsonMetadataMap));
1134             }
1135         } catch (Exception e) {
1136             CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG, "Exception occurred during update vertex metadata properties with json{}. {}",
1137                 vertex.property(GraphPropertyEnum.UNIQUE_ID.getProperty()), e.getMessage());
1138             return JanusGraphClient.handleJanusGraphException(e);
1139         }
1140         return JanusGraphOperationStatus.OK;
1141     }
1142
1143     public JanusGraphOperationStatus disassociateAndDeleteLast(GraphVertex vertex, Direction direction, EdgeLabelEnum label) {
1144         try {
1145             Iterator<Edge> edges = vertex.getVertex().edges(direction, label.name());
1146             while (edges.hasNext()) {
1147                 Edge edge = edges.next();
1148                 Vertex secondVertex;
1149                 Direction reverseDirection;
1150                 if (direction == Direction.IN) {
1151                     secondVertex = edge.outVertex();
1152                     reverseDirection = Direction.OUT;
1153                 } else {
1154                     secondVertex = edge.inVertex();
1155                     reverseDirection = Direction.IN;
1156                 }
1157                 edge.remove();
1158                 CommonUtility.addRecordToLog(logger, LogLevelEnum.TRACE, "Edge  {} with direction {} was removed from {}", label.name(), direction,
1159                     vertex.getVertex());
1160                 Iterator<Edge> restOfEdges = secondVertex.edges(reverseDirection, label.name());
1161                 if (!restOfEdges.hasNext()) {
1162                     secondVertex.remove();
1163                     CommonUtility.addRecordToLog(logger, LogLevelEnum.TRACE, "This was last edge . Vertex  {} was removed ", vertex.getUniqueId());
1164                 }
1165             }
1166         } catch (Exception e) {
1167             CommonUtility.addRecordToLog(logger, LogLevelEnum.DEBUG,
1168                 "Exception occured during deleting an edge with the label {} direction {} from vertex {}. {}", label.name(), direction,
1169                 vertex.getUniqueId(), e);
1170             return JanusGraphClient.handleJanusGraphException(e);
1171         }
1172         return JanusGraphOperationStatus.OK;
1173     }
1174
1175     public Object getProperty(JanusGraphVertex vertex, String key) {
1176         PropertyKey propertyKey = janusGraphClient.getGraph().left().value().getPropertyKey(key);
1177         return vertex.valueOrNull(propertyKey);
1178     }
1179
1180     public Object getProperty(Edge edge, EdgePropertyEnum key) {
1181         Object value = null;
1182         try {
1183             Property<Object> property = edge.property(key.getProperty());
1184             if (property != null) {
1185                 value = property.orElse(null);
1186                 if (value != null && key == EdgePropertyEnum.INSTANCES) {
1187                     return JsonParserUtils.toList((String) value, String.class);
1188                 }
1189                 return value;
1190             }
1191         } catch (Exception e) {
1192         }
1193         return value;
1194     }
1195
1196     /**
1197      * @param vertexA
1198      * @param vertexB
1199      * @param label
1200      * @param direction
1201      * @return
1202      */
1203     public JanusGraphOperationStatus moveEdge(GraphVertex vertexA, GraphVertex vertexB, EdgeLabelEnum label, Direction direction) {
1204         JanusGraphOperationStatus result = deleteEdgeByDirection(vertexA, direction, label);
1205         if (result != JanusGraphOperationStatus.OK) {
1206             logger.error("Failed to diassociate {} from element {}. error {} ", label, vertexA.getUniqueId(), result);
1207             return result;
1208         }
1209         JanusGraphOperationStatus createRelation;
1210         if (direction == Direction.IN) {
1211             createRelation = createEdge(vertexB, vertexA, label, null);
1212         } else {
1213             createRelation = createEdge(vertexA, vertexB, label, null);
1214         }
1215         if (createRelation != JanusGraphOperationStatus.OK) {
1216             return createRelation;
1217         }
1218         return JanusGraphOperationStatus.OK;
1219     }
1220
1221     public Either<Edge, JanusGraphOperationStatus> getBelongingEdgeByCriteria(String parentId, EdgeLabelEnum label,
1222                                                                               Map<GraphPropertyEnum, Object> properties) {
1223         Either<GraphVertex, JanusGraphOperationStatus> getVertexRes = getVertexById(parentId, JsonParseFlagEnum.NoParse);
1224         if (getVertexRes.isRight()) {
1225             return Either.right(getVertexRes.right().value());
1226         }
1227         return getBelongingEdgeByCriteria(getVertexRes.left().value(), label, properties);
1228     }
1229 }