| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.atlas.repository.store.graph.v1; |
| |
| import org.apache.atlas.AtlasErrorCode; |
| import org.apache.atlas.annotation.GraphTransaction; |
| import org.apache.atlas.exception.AtlasBaseException; |
| import org.apache.atlas.model.TypeCategory; |
| import org.apache.atlas.model.instance.AtlasObjectId; |
| import org.apache.atlas.model.instance.AtlasRelationship; |
| import org.apache.atlas.model.typedef.AtlasRelationshipDef; |
| import org.apache.atlas.model.typedef.AtlasRelationshipEndDef; |
| import org.apache.atlas.repository.Constants; |
| import org.apache.atlas.repository.RepositoryException; |
| import org.apache.atlas.repository.graph.GraphHelper; |
| import org.apache.atlas.repository.graphdb.AtlasEdge; |
| import org.apache.atlas.repository.graphdb.AtlasVertex; |
| import org.apache.atlas.repository.store.graph.AtlasRelationshipStore; |
| import org.apache.atlas.type.AtlasEntityType; |
| import org.apache.atlas.type.AtlasRelationshipType; |
| import org.apache.atlas.type.AtlasStructType.AtlasAttribute; |
| import org.apache.atlas.type.AtlasTypeRegistry; |
| import org.apache.atlas.type.AtlasTypeUtil; |
| import org.apache.commons.collections.MapUtils; |
| import org.apache.commons.lang.StringUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.stereotype.Component; |
| |
| import javax.inject.Inject; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.UUID; |
| |
| import static org.apache.atlas.repository.graphdb.AtlasEdgeDirection.BOTH; |
| import static org.apache.atlas.repository.store.graph.v1.AtlasGraphUtilsV1.getTypeName; |
| |
| @Component |
| public class AtlasRelationshipStoreV1 implements AtlasRelationshipStore { |
| private static final Logger LOG = LoggerFactory.getLogger(AtlasRelationshipStoreV1.class); |
| private static final int DEFAULT_RELATIONSHIP_VERSION = 0; |
| |
| private final AtlasTypeRegistry typeRegistry; |
| private final EntityGraphRetriever entityRetriever; |
| private final GraphHelper graphHelper = GraphHelper.getInstance(); |
| |
| @Inject |
| public AtlasRelationshipStoreV1(AtlasTypeRegistry typeRegistry) { |
| this.typeRegistry = typeRegistry; |
| this.entityRetriever = new EntityGraphRetriever(typeRegistry); |
| } |
| |
| @Override |
| @GraphTransaction |
| public AtlasRelationship create(AtlasRelationship relationship) throws AtlasBaseException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> create({})", relationship); |
| } |
| |
| validateRelationship(relationship); |
| |
| AtlasVertex end1Vertex = getVertexFromEndPoint(relationship.getEnd1()); |
| AtlasVertex end2Vertex = getVertexFromEndPoint(relationship.getEnd2()); |
| AtlasRelationship ret = createRelationship(relationship, end1Vertex, end2Vertex); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== create({}): {}", relationship, ret); |
| } |
| |
| return ret; |
| } |
| |
| @Override |
| @GraphTransaction |
| public AtlasRelationship update(AtlasRelationship relationship) throws AtlasBaseException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> update({})", relationship); |
| } |
| |
| AtlasRelationship ret = null; |
| |
| // TODO: update(relationship) implementation |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== update({}): {}", relationship, ret); |
| } |
| |
| return ret; |
| } |
| |
| @Override |
| @GraphTransaction |
| public AtlasRelationship getById(String guid) throws AtlasBaseException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> getById({})", guid); |
| } |
| |
| AtlasRelationship ret; |
| |
| AtlasEdge edge = graphHelper.getEdgeForGUID(guid); |
| |
| ret = entityRetriever.mapEdgeToAtlasRelationship(edge); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== getById({}): {}", guid, ret); |
| } |
| |
| return ret; |
| } |
| |
| @Override |
| @GraphTransaction |
| public void deleteById(String guid) throws AtlasBaseException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> deleteById({})", guid); |
| } |
| |
| // TODO: deleteById(guid) implementation |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== deleteById({}): {}", guid); |
| } |
| } |
| |
| public AtlasRelationship getOrCreate(AtlasRelationship relationship) throws AtlasBaseException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> getOrCreate({})", relationship); |
| } |
| |
| validateRelationship(relationship); |
| |
| AtlasVertex end1Vertex = getVertexFromEndPoint(relationship.getEnd1()); |
| AtlasVertex end2Vertex = getVertexFromEndPoint(relationship.getEnd2()); |
| AtlasRelationship ret; |
| |
| // check if relationship exists |
| AtlasEdge relationshipEdge = getRelationshipEdge(end1Vertex, end2Vertex, relationship); |
| |
| if (relationshipEdge != null) { |
| ret = entityRetriever.mapEdgeToAtlasRelationship(relationshipEdge); |
| |
| } else { |
| validateRelationship(relationship); |
| ret = createRelationship(relationship, end1Vertex, end2Vertex); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== getOrCreate({}): {}", relationship, ret); |
| } |
| |
| return ret; |
| } |
| |
| private AtlasRelationship createRelationship(AtlasRelationship relationship, AtlasVertex end1Vertex, AtlasVertex end2Vertex) |
| throws AtlasBaseException { |
| AtlasRelationship ret; |
| |
| try { |
| AtlasEdge relationshipEdge = getRelationshipEdge(end1Vertex, end2Vertex, relationship); |
| |
| if (relationshipEdge == null) { |
| relationshipEdge = createRelationshipEdge(end1Vertex, end2Vertex, relationship); |
| |
| AtlasRelationshipType relationType = typeRegistry.getRelationshipTypeByName(relationship.getTypeName()); |
| |
| if (MapUtils.isNotEmpty(relationType.getAllAttributes())) { |
| for (AtlasAttribute attr : relationType.getAllAttributes().values()) { |
| String attrName = attr.getName(); |
| String attrVertexProperty = attr.getVertexPropertyName(); |
| Object attrValue = relationship.getAttribute(attrName); |
| |
| AtlasGraphUtilsV1.setProperty(relationshipEdge, attrVertexProperty, attrValue); |
| } |
| } |
| |
| ret = entityRetriever.mapEdgeToAtlasRelationship(relationshipEdge); |
| |
| } else { |
| throw new AtlasBaseException(AtlasErrorCode.RELATIONSHIP_ALREADY_EXISTS, relationship.getTypeName(), |
| relationship.getEnd1().getGuid(), relationship.getEnd2().getGuid()); |
| } |
| } catch (RepositoryException e) { |
| throw new AtlasBaseException(AtlasErrorCode.INTERNAL_ERROR, e); |
| } |
| |
| return ret; |
| } |
| |
| private void validateRelationship(AtlasRelationship relationship) throws AtlasBaseException { |
| if (relationship == null) { |
| throw new AtlasBaseException(AtlasErrorCode.INVALID_PARAMETERS, "AtlasRelationship is null"); |
| } |
| |
| String relationshipName = relationship.getTypeName(); |
| String end1TypeName = getTypeNameFromObjectId(relationship.getEnd1()); |
| String end2TypeName = getTypeNameFromObjectId(relationship.getEnd2()); |
| AtlasRelationshipType relationshipType = typeRegistry.getRelationshipTypeByName(relationshipName); |
| |
| if (relationshipType == null) { |
| throw new AtlasBaseException(AtlasErrorCode.INVALID_VALUE, "unknown relationship type'" + relationshipName + "'"); |
| } |
| |
| if (relationship.getEnd1() == null || relationship.getEnd2() == null) { |
| throw new AtlasBaseException(AtlasErrorCode.INVALID_PARAMETERS, "end1/end2 is null"); |
| } |
| |
| if (!relationshipType.getEnd1Type().isTypeOrSuperTypeOf(end1TypeName) && |
| !relationshipType.getEnd2Type().isTypeOrSuperTypeOf(end1TypeName)) { |
| |
| throw new AtlasBaseException(AtlasErrorCode.INVALID_RELATIONSHIP_END_TYPE, relationshipName, |
| relationshipType.getEnd2Type().getTypeName(), end1TypeName); |
| } |
| |
| if (!relationshipType.getEnd2Type().isTypeOrSuperTypeOf(end2TypeName) && |
| !relationshipType.getEnd1Type().isTypeOrSuperTypeOf(end2TypeName)) { |
| |
| throw new AtlasBaseException(AtlasErrorCode.INVALID_RELATIONSHIP_END_TYPE, relationshipName, |
| relationshipType.getEnd1Type().getTypeName(), end2TypeName); |
| } |
| |
| validateEnds(relationship); |
| |
| validateAndNormalize(relationship); |
| } |
| |
| /** |
| * Validate the ends of the passed relationship |
| * @param relationship |
| * @throws AtlasBaseException |
| */ |
| private void validateEnds(AtlasRelationship relationship) throws AtlasBaseException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("validateEnds entry relationship:" + relationship); |
| } |
| List<AtlasObjectId> ends = new ArrayList<>(); |
| List<AtlasRelationshipEndDef> endDefs = new ArrayList<>(); |
| String relationshipTypeName = relationship.getTypeName(); |
| AtlasRelationshipDef relationshipDef = typeRegistry.getRelationshipDefByName(relationshipTypeName); |
| ends.add(relationship.getEnd1()); |
| ends.add(relationship.getEnd2()); |
| endDefs.add(relationshipDef.getEndDef1()); |
| endDefs.add(relationshipDef.getEndDef2()); |
| |
| for (int i = 0; i < ends.size(); i++) { |
| AtlasObjectId end = ends.get(i); |
| String guid = end.getGuid(); |
| String typeName = end.getTypeName(); |
| Map<String, Object> uniqueAttributes = end.getUniqueAttributes(); |
| AtlasVertex endVertex = AtlasGraphUtilsV1.findByGuid(guid); |
| |
| if (!AtlasTypeUtil.isValidGuid(guid) || endVertex == null) { |
| throw new AtlasBaseException(AtlasErrorCode.INSTANCE_GUID_NOT_FOUND, guid); |
| } else if (MapUtils.isNotEmpty(uniqueAttributes)) { |
| AtlasEntityType entityType = typeRegistry.getEntityTypeByName(typeName); |
| if (AtlasGraphUtilsV1.findByUniqueAttributes(entityType, uniqueAttributes) == null) { |
| throw new AtlasBaseException(AtlasErrorCode.INSTANCE_BY_UNIQUE_ATTRIBUTE_NOT_FOUND, typeName, uniqueAttributes.toString()); |
| } |
| } else { |
| // check whether the guid is the correct type |
| String vertexTypeName = endVertex.getProperty(Constants.TYPE_NAME_PROPERTY_KEY, String.class); |
| if (!Objects.equals(vertexTypeName, typeName)) { |
| String attrName = endDefs.get(i).getName(); |
| throw new AtlasBaseException(AtlasErrorCode.RELATIONSHIP_INVALID_ENDTYPE, attrName, guid, vertexTypeName, typeName); |
| } |
| } |
| } |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("validateEnds exit successfully validated relationship:" + relationship); |
| } |
| } |
| |
| private void validateAndNormalize(AtlasRelationship relationship) throws AtlasBaseException { |
| List<String> messages = new ArrayList<>(); |
| |
| if (! AtlasTypeUtil.isValidGuid(relationship.getGuid())) { |
| throw new AtlasBaseException(AtlasErrorCode.RELATIONSHIP_GUID_NOT_FOUND, relationship.getGuid()); |
| } |
| |
| AtlasRelationshipType type = typeRegistry.getRelationshipTypeByName(relationship.getTypeName()); |
| |
| if (type == null) { |
| throw new AtlasBaseException(AtlasErrorCode.TYPE_NAME_INVALID, TypeCategory.RELATIONSHIP.name(), relationship.getTypeName()); |
| } |
| |
| type.validateValue(relationship, relationship.getTypeName(), messages); |
| |
| if (!messages.isEmpty()) { |
| throw new AtlasBaseException(AtlasErrorCode.RELATIONSHIP_CRUD_INVALID_PARAMS, messages); |
| } |
| |
| type.getNormalizedValue(relationship); |
| } |
| |
| public AtlasEdge getRelationshipEdge(AtlasVertex fromVertex, AtlasVertex toVertex, AtlasRelationship relationship) { |
| String relationshipLabel = getRelationshipEdgeLabel(fromVertex, toVertex, relationship); |
| AtlasEdge ret = graphHelper.getEdgeForLabel(fromVertex, relationshipLabel); |
| |
| if (ret != null) { |
| AtlasVertex inVertex = ret.getInVertex(); |
| |
| if (inVertex != null) { |
| if (!StringUtils.equals(AtlasGraphUtilsV1.getIdFromVertex(inVertex), |
| AtlasGraphUtilsV1.getIdFromVertex(toVertex))) { |
| ret = null; |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| private int getRelationshipVersion(AtlasRelationship relationship) { |
| Long ret = relationship != null ? relationship.getVersion() : null; |
| |
| return (ret != null) ? ret.intValue() : DEFAULT_RELATIONSHIP_VERSION; |
| } |
| |
| private AtlasVertex getVertexFromEndPoint(AtlasObjectId endPoint) { |
| AtlasVertex ret = null; |
| |
| if (StringUtils.isNotEmpty(endPoint.getGuid())) { |
| ret = AtlasGraphUtilsV1.findByGuid(endPoint.getGuid()); |
| |
| } else if (StringUtils.isNotEmpty(endPoint.getTypeName()) && MapUtils.isNotEmpty(endPoint.getUniqueAttributes())) { |
| AtlasEntityType entityType = typeRegistry.getEntityTypeByName(endPoint.getTypeName()); |
| |
| ret = AtlasGraphUtilsV1.findByUniqueAttributes(entityType, endPoint.getUniqueAttributes()); |
| } |
| |
| return ret; |
| } |
| |
| private AtlasEdge createRelationshipEdge(AtlasVertex fromVertex, AtlasVertex toVertex, AtlasRelationship relationship) |
| throws RepositoryException { |
| |
| String relationshipLabel = getRelationshipEdgeLabel(fromVertex, toVertex, relationship); |
| AtlasEdge ret = graphHelper.getOrCreateEdge(fromVertex, toVertex, relationshipLabel); |
| |
| // map additional properties to relationship edge |
| if (ret != null) { |
| final String guid = UUID.randomUUID().toString(); |
| |
| AtlasGraphUtilsV1.setProperty(ret, Constants.ENTITY_TYPE_PROPERTY_KEY, relationship.getTypeName()); |
| AtlasGraphUtilsV1.setProperty(ret, Constants.GUID_PROPERTY_KEY, guid); |
| AtlasGraphUtilsV1.setProperty(ret, Constants.VERSION_PROPERTY_KEY, getRelationshipVersion(relationship)); |
| } |
| |
| return ret; |
| } |
| |
| private String getRelationshipEdgeLabel(AtlasVertex fromVertex, AtlasVertex toVertex, AtlasRelationship relationship) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("validateEnds entry relationship:"+relationship); |
| } |
| AtlasRelationshipType relationshipType = typeRegistry.getRelationshipTypeByName(relationship.getTypeName()); |
| String ret = relationshipType.getRelationshipDef().getRelationshipLabel(); |
| AtlasRelationshipEndDef endDef1 = relationshipType.getRelationshipDef().getEndDef1(); |
| AtlasRelationshipEndDef endDef2 = relationshipType.getRelationshipDef().getEndDef2(); |
| Set<String> fromVertexTypes = getTypeAndAllSuperTypes(AtlasGraphUtilsV1.getTypeName(fromVertex)); |
| Set<String> toVertexTypes = getTypeAndAllSuperTypes(AtlasGraphUtilsV1.getTypeName(toVertex)); |
| AtlasAttribute attribute = null; |
| |
| // validate entity type and all its supertypes contains relationshipDefs end type |
| // e.g. [hive_process -> hive_table] -> [Process -> DataSet] |
| if (fromVertexTypes.contains(endDef1.getType()) && toVertexTypes.contains(endDef2.getType())) { |
| String attributeName = endDef1.getName(); |
| |
| attribute = relationshipType.getEnd1Type().getRelationshipAttribute(attributeName); |
| |
| } else if (fromVertexTypes.contains(endDef2.getType()) && toVertexTypes.contains(endDef1.getType())) { |
| String attributeName = endDef2.getName(); |
| |
| attribute = relationshipType.getEnd2Type().getRelationshipAttribute(attributeName); |
| } |
| |
| if (attribute != null) { |
| ret = attribute.getRelationshipEdgeLabel(); |
| } |
| |
| return ret; |
| } |
| |
| public Set<String> getTypeAndAllSuperTypes(String entityTypeName) { |
| AtlasEntityType entityType = typeRegistry.getEntityTypeByName(entityTypeName); |
| |
| return (entityType != null) ? entityType.getTypeAndAllSuperTypes() : new HashSet<String>(); |
| } |
| |
| private String getTypeNameFromObjectId(AtlasObjectId objectId) { |
| String typeName = objectId.getTypeName(); |
| |
| if (StringUtils.isBlank(typeName)) { |
| typeName = AtlasGraphUtilsV1.getTypeNameFromGuid(objectId.getGuid()); |
| } |
| |
| return typeName; |
| } |
| |
| /** |
| * Check whether this vertex has a relationship associated with this relationship type. |
| * @param vertex |
| * @param relationshipTypeName |
| * @return true if found an edge with this relationship type in. |
| */ |
| private boolean vertexHasRelationshipWithType(AtlasVertex vertex, String relationshipTypeName) { |
| String relationshipEdgeLabel = getRelationshipEdgeLabel(getTypeName(vertex), relationshipTypeName); |
| Iterator<AtlasEdge> iter = graphHelper.getAdjacentEdgesByLabel(vertex, BOTH, relationshipEdgeLabel); |
| |
| return (iter != null) ? iter.hasNext() : false; |
| } |
| |
| private String getRelationshipEdgeLabel(String typeName, String relationshipTypeName) { |
| AtlasRelationshipType relationshipType = typeRegistry.getRelationshipTypeByName(relationshipTypeName); |
| AtlasRelationshipDef relationshipDef = relationshipType.getRelationshipDef(); |
| AtlasEntityType end1Type = relationshipType.getEnd1Type(); |
| AtlasEntityType end2Type = relationshipType.getEnd2Type(); |
| Set<String> vertexTypes = getTypeAndAllSuperTypes(typeName); |
| AtlasAttribute attribute = null; |
| |
| if (vertexTypes.contains(end1Type.getTypeName())) { |
| String attributeName = relationshipDef.getEndDef1().getName(); |
| |
| attribute = (attributeName != null) ? end1Type.getAttribute(attributeName) : null; |
| } else if (vertexTypes.contains(end2Type.getTypeName())) { |
| String attributeName = relationshipDef.getEndDef2().getName(); |
| |
| attribute = (attributeName != null) ? end2Type.getAttribute(attributeName) : null; |
| } |
| |
| return (attribute != null) ? attribute.getRelationshipEdgeLabel() : null; |
| } |
| } |