DG-1749 Custom relationshipDef support

addons/policies/bootstrap_relationship_policies.json

@@ -836,6 +836,45 @@
                     "remove-relationship"
                 ]
             }
+        },
+
+        {
+            "typeName": "AuthPolicy",
+            "attributes":
+            {
+                "name": "LINK_ASSETS_CUSTOM_RELATIONSHIP",
+                "qualifiedName": "LINK_ASSETS_CUSTOM_RELATIONSHIP",
+                "policyCategory": "bootstrap",
+                "policySubCategory": "default",
+                "policyServiceName": "atlas",
+                "policyType": "allow",
+                "policyUsers":
+                [],
+                "policyGroups":
+                [],
+                "policyRoles":
+                [
+                    "$admin",
+                    "$api-token-default-access"
+                ],
+                "policyResourceCategory": "RELATIONSHIP",
+                "policyResources":
+                [
+                    "relationship-type:CustomRelationship",
+                    "end-one-entity-type:Referenceable",
+                    "end-two-entity-type:Referenceable",
+                    "end-one-entity-classification:*",
+                    "end-two-entity-classification:*",
+                    "end-one-entity:*",
+                    "end-two-entity:*"
+                ],
+                "policyActions":
+                [
+                    "add-relationship",
+                    "update-relationship",
+                    "remove-relationship"
+                ]
+            }
         }
     ]
 }

common/src/main/java/org/apache/atlas/repository/Constants.java

@@ -156,6 +156,10 @@ public final class Constants {
     public static final String INPUT_PORT_PRODUCT_EDGE_LABEL = "__Asset.inputPortDataProducts";
     public static final String OUTPUT_PORT_PRODUCT_EDGE_LABEL = "__Asset.outputPortDataProducts";
 
+    public static final String CUSTOM_RELATIONSHIP_EDGE_LABEL = "__Referenceable.customRelationshipTo";
+    public static final String CUSTOM_RELATIONSHIP_END_NAME_FROM = "customRelationshipFrom";
+    public static final String CUSTOM_RELATIONSHIP_END_NAME_TO = "customRelationshipTo";
+
     /**
      * SQL property keys.
      */

intg/src/main/java/org/apache/atlas/AtlasConfiguration.java

@@ -113,7 +113,9 @@ public enum AtlasConfiguration {
 
     INDEXSEARCH_ASYNC_SEARCH_KEEP_ALIVE_TIME_IN_SECONDS("atlas.indexsearch.async.search.keep.alive.time.in.seconds", 300),
 
-    ATLAS_MAINTENANCE_MODE("atlas.maintenance.mode", false);
+    ATLAS_MAINTENANCE_MODE("atlas.maintenance.mode", false),
+
+    ATLAS_CUSTOM_RELATIONSHIPS_MAX_COUNT("atlas.custom.relationships.max.count", 100);
 
 
     private static final Configuration APPLICATION_PROPERTIES;

intg/src/main/java/org/apache/atlas/model/discovery/IndexSearchParams.java

@@ -28,6 +28,7 @@ public class IndexSearchParams extends SearchParams {
     * */
     private boolean allowDeletedRelations;
     private boolean accessControlExclusive;
+    private boolean requestRelationshipAttrsForSearch;
 
     @Override
     public String getQuery() {
@@ -79,6 +80,14 @@ public void setRelationAttributes(Set<String> relationAttributes) {
         this.relationAttributes = relationAttributes;
     }
 
+    public boolean isRequestRelationshipAttrsForSearch() {
+        return requestRelationshipAttrsForSearch;
+    }
+
+    public void setRequestRelationshipAttrsForSearch(boolean requestRelationshipAttrsForSearch) {
+        this.requestRelationshipAttrsForSearch = requestRelationshipAttrsForSearch;
+    }
+
     @Override
     public String toString() {
         return "IndexSearchParams{" +
@@ -88,6 +97,7 @@ public String toString() {
                 ", queryString='" + queryString + '\'' +
                 ", allowDeletedRelations=" + allowDeletedRelations +
                 ", accessControlExclusive=" + accessControlExclusive +
+                ", requestRelationshipAttrsForSearch=" + requestRelationshipAttrsForSearch +
                 ", utmTags="+ getUtmTags() +
                 '}';
     }

repository/src/main/java/org/apache/atlas/discovery/EntityDiscoveryService.java

@@ -976,6 +976,7 @@ public AtlasSearchResult directIndexSearch(SearchParams searchParams) throws Atl
         IndexSearchParams params = (IndexSearchParams) searchParams;
         RequestContext.get().setRelationAttrsForSearch(params.getRelationAttributes());
         RequestContext.get().setAllowDeletedRelationsIndexsearch(params.isAllowDeletedRelations());
+        RequestContext.get().setRequestRelationshipAttrsForSearch(params.isRequestRelationshipAttrsForSearch());
 
         AtlasSearchResult ret = new AtlasSearchResult();
         AtlasIndexQuery indexQuery;

repository/src/main/java/org/apache/atlas/repository/store/graph/v1/DeleteHandlerV1.java

@@ -192,7 +192,7 @@ public void deleteRelationships(Collection<AtlasEdge> edges, final boolean force
                 }
                 continue;
             }
-            deleteEdge(edge, isInternal || forceDelete);
+            deleteEdge(edge, isInternal || forceDelete || isCustomRelationship(edge));
         }
     }
 
@@ -381,7 +381,7 @@ public boolean deleteEdgeReference(AtlasEdge edge, TypeCategory typeCategory, bo
             // for relationship edges, inverse vertex's relationship attribute doesn't need to be updated.
             // only delete the reference relationship edge
             if (GraphHelper.isRelationshipEdge(edge)) {
-                deleteEdge(edge, isInternalType);
+                deleteEdge(edge, isInternalType || isCustomRelationship(edge));
                 AtlasVertex referencedVertex = entityRetriever.getReferencedEntityVertex(edge, relationshipDirection, entityVertex);
 
                 if (referencedVertex != null) {
@@ -398,7 +398,7 @@ public boolean deleteEdgeReference(AtlasEdge edge, TypeCategory typeCategory, bo
                 //legacy case - not a relationship edge
                 //If deleting just the edge, reverse attribute should be updated for any references
                 //For example, for the department type system, if the person's manager edge is deleted, subordinates of manager should be updated
-                deleteEdge(edge, true, isInternalType);
+                deleteEdge(edge, true, isInternalType || isCustomRelationship(edge));
             }
         }
 
@@ -976,7 +976,8 @@ protected void deleteEdgeBetweenVertices(AtlasVertex outVertex, AtlasVertex inVe
         }
 
         if (edge != null) {
-            deleteEdge(edge, isInternalType(inVertex) && isInternalType(outVertex));
+            boolean isInternal = isInternalType(inVertex) && isInternalType(outVertex);
+            deleteEdge(edge, isInternal || isCustomRelationship(edge));
 
             final RequestContext requestContext = RequestContext.get();
             final String         outId          = GraphHelper.getGuid(outVertex);
@@ -1059,6 +1060,10 @@ private boolean isInternalType(final AtlasVertex instanceVertex) {
         return Objects.nonNull(entityType) && entityType.isInternalType();
     }
 
+    private boolean isCustomRelationship(final AtlasEdge edge) {
+        return edge.getLabel().equals(CUSTOM_RELATIONSHIP_EDGE_LABEL);
+    }
+
     private void addToPropagatedClassificationNames(AtlasVertex entityVertex, String classificationName) {
         if (LOG.isDebugEnabled()) {
             LOG.debug("Adding property {} = \"{}\" to vertex {}", PROPAGATED_TRAIT_NAMES_PROPERTY_KEY, classificationName, string(entityVertex));

repository/src/main/java/org/apache/atlas/repository/store/graph/v2/AtlasRelationshipStoreV2.java

@@ -100,6 +100,8 @@ public class AtlasRelationshipStoreV2 implements AtlasRelationshipStore {
     private static final String END_2_DOC_ID_KEY = "end2DocId";
     private static final String ES_DOC_ID_MAP_KEY = "esDocIdMap";
 
+    private static final String CUSTOM_RELATIONSHIP_TYPE_NAME = "CustomRelationship";
+
     private static Set<String> EXCLUDE_MUTATION_REL_TYPE_NAMES = new HashSet<String>() {{
         add(REL_DOMAIN_TO_DOMAINS);
         add(REL_DOMAIN_TO_PRODUCTS);
@@ -140,6 +142,10 @@ public AtlasRelationship create(AtlasRelationship relationship) throws AtlasBase
         AtlasVertex end1Vertex = getVertexFromEndPoint(relationship.getEnd1());
         AtlasVertex end2Vertex = getVertexFromEndPoint(relationship.getEnd2());
 
+        if (relationship.getTypeName().equals(CUSTOM_RELATIONSHIP_TYPE_NAME)) {
+            EntityGraphMapper.validateCustomRelationship(end1Vertex, end2Vertex);
+        }
+
         AtlasEdge edge = createRelationship(end1Vertex, end2Vertex, relationship);
 
         AtlasRelationship ret = edge != null ? entityRetriever.mapEdgeToAtlasRelationship(edge) : null;

repository/src/main/java/org/apache/atlas/repository/store/graph/v2/EntityGraphMapper.java

@@ -192,8 +192,9 @@ public class EntityGraphMapper {
     private              boolean DEFERRED_ACTION_ENABLED                             = AtlasConfiguration.TASKS_USE_ENABLED.getBoolean();
     private              boolean DIFFERENTIAL_AUDITS                                 = STORE_DIFFERENTIAL_AUDITS.getBoolean();
 
-    private static final int     MAX_NUMBER_OF_RETRIES = AtlasConfiguration.MAX_NUMBER_OF_RETRIES.getInt();
-    private static final int     CHUNK_SIZE            = AtlasConfiguration.TASKS_GRAPH_COMMIT_CHUNK_SIZE.getInt();
+    private static final int MAX_NUMBER_OF_RETRIES = AtlasConfiguration.MAX_NUMBER_OF_RETRIES.getInt();
+    private static final int CHUNK_SIZE            = AtlasConfiguration.TASKS_GRAPH_COMMIT_CHUNK_SIZE.getInt();
+    private static final int CUSTOM_REL_THRESHOLD  = AtlasConfiguration.ATLAS_CUSTOM_RELATIONSHIPS_MAX_COUNT.getInt();
 
     private final GraphHelper               graphHelper;
     private final AtlasGraph                graph;
@@ -1769,8 +1770,11 @@ private AtlasEdge getEdgeUsingRelationship(AttributeMutationContext ctx, EntityM
 
                 AtlasEdge edge = null;
 
+                Map<String, Object> relationshipAttributes = getRelationshipAttributes(ctx.getValue());
+                AtlasRelationship relationship = new AtlasRelationship(relationshipName, relationshipAttributes);
+
                 if (createEdge) {
-                    edge = relationshipStore.getOrCreate(fromVertex, toVertex, new AtlasRelationship(relationshipName));
+                    edge = relationshipStore.getOrCreate(fromVertex, toVertex, relationship);
                     boolean isCreated = graphHelper.getCreatedTime(edge) == RequestContext.get().getRequestTime();
 
                     if (isCreated) {
@@ -1781,7 +1785,7 @@ private AtlasEdge getEdgeUsingRelationship(AttributeMutationContext ctx, EntityM
                     }
 
                 } else {
-                    edge = relationshipStore.getRelationship(fromVertex, toVertex, new AtlasRelationship(relationshipName));
+                    edge = relationshipStore.getRelationship(fromVertex, toVertex, relationship);
                 }
                 ret = edge;
             }
@@ -2010,6 +2014,10 @@ public List mapArrayValue(AttributeMutationContext ctx, EntityMutationContext co
             case OUTPUT_PORT_PRODUCT_EDGE_LABEL:
                 addInternalProductAttr(ctx, newElementsCreated, removedElements);
                 break;
+
+            case CUSTOM_RELATIONSHIP_EDGE_LABEL:
+                validateCustomRelationship(ctx, newElementsCreated, false);
+                break;
         }
 
         if (LOG.isDebugEnabled()) {
@@ -2100,6 +2108,10 @@ public List appendArrayValue(AttributeMutationContext ctx, EntityMutationContext
             case OUTPUT_PORT_PRODUCT_EDGE_LABEL:
                 addInternalProductAttr(ctx, newElementsCreated, null);
                 break;
+
+            case CUSTOM_RELATIONSHIP_EDGE_LABEL:
+                validateCustomRelationship(ctx, newElementsCreated, true);
+                break;
         }
 
         if (LOG.isDebugEnabled()) {
@@ -2209,6 +2221,58 @@ private void addEdgesToContext(String guid, List<Object> newElementsCreated, Lis
         }
     }
 
+    public static void validateCustomRelationship(AttributeMutationContext ctx, List<Object> newElements, boolean isAppend) throws AtlasBaseException {
+        long currentSize;
+        boolean isEdgeDirectionIn = ctx.getAttribute().getRelationshipEdgeDirection() == AtlasRelationshipEdgeDirection.IN;
+
+        if (isAppend) {
+            currentSize = ctx.getReferringVertex().getEdgesCount(isEdgeDirectionIn ? AtlasEdgeDirection.IN : AtlasEdgeDirection.OUT,
+                    CUSTOM_RELATIONSHIP_EDGE_LABEL);
+        } else {
+            currentSize = newElements.size();
+        }
+
+        validateCustomRelationshipCount(currentSize, ctx.getReferringVertex());
+
+        AtlasEdgeDirection direction;
+        if (isEdgeDirectionIn) {
+            direction = AtlasEdgeDirection.OUT;
+        } else {
+            direction = AtlasEdgeDirection.IN;
+        }
+
+        for (Object obj : newElements) {
+            AtlasEdge edge = (AtlasEdge) obj;
+
+            AtlasVertex targetVertex;
+            if (isEdgeDirectionIn) {
+                targetVertex = edge.getOutVertex();
+                LOG.info("{}: {}", direction, "outVertex");
+            } else {
+                targetVertex = edge.getInVertex();
+                LOG.info("{}: {}", direction, "inVertex");
+            }
+
+            currentSize = targetVertex.getEdgesCount(direction, CUSTOM_RELATIONSHIP_EDGE_LABEL);
+            validateCustomRelationshipCount(currentSize, targetVertex);
+        }
+    }
+
+    public static void validateCustomRelationship(AtlasVertex end1Vertex, AtlasVertex end2Vertex) throws AtlasBaseException {
+        long currentSize = end1Vertex.getEdgesCount(AtlasEdgeDirection.OUT, CUSTOM_RELATIONSHIP_EDGE_LABEL) + 1;
+        validateCustomRelationshipCount(currentSize, end1Vertex);
+
+        currentSize = end2Vertex.getEdgesCount(AtlasEdgeDirection.IN, CUSTOM_RELATIONSHIP_EDGE_LABEL) + 1;
+        validateCustomRelationshipCount(currentSize, end2Vertex);
+    }
+
+    private static void validateCustomRelationshipCount(long size, AtlasVertex vertex) throws AtlasBaseException {
+        if (CUSTOM_REL_THRESHOLD < size) {
+            throw new AtlasBaseException(AtlasErrorCode.OPERATION_NOT_SUPPORTED,
+                    "Custom relationships size is more than " + CUSTOM_REL_THRESHOLD + ", current is " + size + " for " + vertex.getProperty(NAME, String.class));
+        }
+    }
+
     private void addInternalProductAttr(AttributeMutationContext ctx, List<Object> createdElements, List<AtlasEdge> deletedElements) throws AtlasBaseException {
         MetricRecorder metricRecorder = RequestContext.get().startMetricRecord("addInternalProductAttrForAppend");
         AtlasVertex toVertex = ctx.getReferringVertex();
@@ -2676,6 +2740,8 @@ private static Map<String, Object> getRelationshipAttributes(Object val) throws
             if (relationshipStruct instanceof Map) {
                 return AtlasTypeUtil.toStructAttributes(((Map) relationshipStruct));
             }
+        } else if (val instanceof AtlasObjectId) {
+            return ((AtlasObjectId) val).getAttributes();
         }
 
         return null;

repository/src/main/java/org/apache/atlas/repository/store/graph/v2/EntityGraphRetriever.java

@@ -1658,6 +1658,14 @@ private AtlasObjectId mapVertexToObjectId(AtlasVertex entityVertex, String edgeL
                     ret = toAtlasObjectId(referenceVertex);
                 }
             }
+
+            if (RequestContext.get().isRequestRelationshipAttrsForSearch()) {
+                boolean isRelationshipAttribute = typeRegistry.getRelationshipDefByName(GraphHelper.getTypeName(edge)) != null;
+                if (isRelationshipAttribute) {
+                    AtlasRelationship relationship = mapEdgeToAtlasRelationship(edge);
+                    ret.getAttributes().put("relationshipAttributes", relationship.getAttributes());
+                }
+            }
         }
 
         return ret;

repository/src/main/java/org/apache/atlas/tasks/TaskExecutor.java

@@ -114,6 +114,7 @@ public void run() {
                     TASK_LOG.info("Task not scheduled as it was not found");
                     return;
                 }
+                RequestContext.get().setTraceId(task.getGuid());
 
                 TASK_LOG.info("Task guid = "+task.getGuid());
                 taskVertex = registry.getVertex(task.getGuid());

server-api/src/main/java/org/apache/atlas/RequestContext.java

@@ -88,6 +88,7 @@ public class RequestContext {
     private boolean     allowDeletedRelationsIndexsearch = false;
     private boolean     includeMeanings = true;
     private boolean     includeClassifications = true;
+    private boolean     requestRelationshipAttrsForSearch;
 
     private boolean     includeClassificationNames = false;
     private String      currentTypePatchAction = "";
@@ -153,6 +154,7 @@ public void clearCache() {
         this.onlyCAUpdateEntities.clear();
         this.onlyBAUpdateEntities.clear();
         this.relationAttrsForSearch.clear();
+        this.requestRelationshipAttrsForSearch = false;
         this.queuedTasks.clear();
         this.newElementsCreatedMap.clear();
         this.removedElementsMap.clear();
@@ -206,6 +208,14 @@ public void setRelationAttrsForSearch(Set<String> relationAttrsForSearch) {
         }
     }
 
+    public boolean isRequestRelationshipAttrsForSearch() {
+        return requestRelationshipAttrsForSearch;
+    }
+
+    public void setRequestRelationshipAttrsForSearch(boolean requestRelationshipAttrsForSearch) {
+        this.requestRelationshipAttrsForSearch = requestRelationshipAttrsForSearch;
+    }
+
     public Map<String, List<Object>> getRemovedElementsMap() {
         return removedElementsMap;
     }