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/**
* ============LICENSE_START=======================================================
* Gizmo
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property.
* Copyright © 2017 Amdocs
* All rights reserved.
* ================================================================================
* Licensed 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
* ============LICENSE_END=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*/
package org.onap.crud.service;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Response.Status;
import org.onap.crud.dao.GraphDao;
import org.onap.crud.entity.Edge;
import org.onap.crud.entity.Vertex;
import org.onap.crud.exception.CrudException;
import org.onap.crud.parser.CrudResponseBuilder;
import org.onap.crud.util.CrudServiceUtil;
import org.onap.schema.OxmModelValidator;
import org.onap.schema.RelationshipSchemaValidator;
import com.google.gson.JsonElement;
public abstract class AbstractGraphDataService {
protected GraphDao daoForGet;
protected GraphDao dao;
public AbstractGraphDataService() throws CrudException {
CrudServiceUtil.loadModels();
}
public String getEdge(String version, String id, String type) throws CrudException {
RelationshipSchemaValidator.validateType(version, type);
Edge edge = daoForGet.getEdge(id, type);
return CrudResponseBuilder.buildGetEdgeResponse(RelationshipSchemaValidator.validateOutgoingPayload(version, edge), version);
}
public String getEdges(String version, String type, Map<String, String> filter) throws CrudException {
RelationshipSchemaValidator.validateType(version, type);
List<Edge> items = daoForGet.getEdges(type, RelationshipSchemaValidator.resolveCollectionfilter(version, type, filter));
return CrudResponseBuilder.buildGetEdgesResponse(items, version);
}
public String getVertex(String version, String id, String type) throws CrudException {
type = OxmModelValidator.resolveCollectionType(version, type);
Vertex vertex = daoForGet.getVertex(id, type, version);
List<Edge> edges = daoForGet.getVertexEdges(id);
return CrudResponseBuilder.buildGetVertexResponse(OxmModelValidator.validateOutgoingPayload(version, vertex), edges,
version);
}
public String getVertices(String version, String type, Map<String, String> filter, HashSet<String> properties) throws CrudException {
type = OxmModelValidator.resolveCollectionType(version, type);
List<Vertex> items = daoForGet.getVertices(type, OxmModelValidator.resolveCollectionfilter(version, type, filter), properties, version);
return CrudResponseBuilder.buildGetVerticesResponse(items, version);
}
public String addBulk(String version, BulkPayload payload, HttpHeaders headers) throws CrudException {
HashMap<String, Vertex> vertices = new HashMap<String, Vertex>();
HashMap<String, Edge> edges = new HashMap<String, Edge>();
String txId = dao.openTransaction();
try {
// Step 1. Handle edge deletes (must happen before vertex deletes)
for (JsonElement v : payload.getRelationships()) {
List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
v.getAsJsonObject().entrySet());
if (entries.size() != 2) {
throw new CrudException("", Status.BAD_REQUEST);
}
Map.Entry<String, JsonElement> opr = entries.get(0);
Map.Entry<String, JsonElement> item = entries.get(1);
EdgePayload edgePayload = EdgePayload.fromJson(item.getValue().getAsJsonObject().toString());
if (opr.getValue().getAsString().equalsIgnoreCase("delete")) {
RelationshipSchemaValidator.validateType(version, edgePayload.getType());
deleteBulkEdge(edgePayload.getId(), version, edgePayload.getType(), txId);
}
}
// Step 2: Handle vertex deletes
for (JsonElement v : payload.getObjects()) {
List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
v.getAsJsonObject().entrySet());
if (entries.size() != 2) {
throw new CrudException("", Status.BAD_REQUEST);
}
Map.Entry<String, JsonElement> opr = entries.get(0);
Map.Entry<String, JsonElement> item = entries.get(1);
VertexPayload vertexPayload = VertexPayload.fromJson(item.getValue().getAsJsonObject().toString());
if (opr.getValue().getAsString().equalsIgnoreCase("delete")) {
String type = OxmModelValidator.resolveCollectionType(version, vertexPayload.getType());
deleteBulkVertex(vertexPayload.getId(), version, type, txId);
}
}
// Step 3: Handle vertex add/modify (must happen before edge adds)
for (JsonElement v : payload.getObjects()) {
List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
v.getAsJsonObject().entrySet());
if (entries.size() != 2) {
throw new CrudException("", Status.BAD_REQUEST);
}
Map.Entry<String, JsonElement> opr = entries.get(0);
Map.Entry<String, JsonElement> item = entries.get(1);
VertexPayload vertexPayload = VertexPayload.fromJson(item.getValue().getAsJsonObject().toString());
// Add vertex
if (opr.getValue().getAsString().equalsIgnoreCase("add")) {
vertexPayload.setProperties(CrudServiceUtil.mergeHeaderInFoToPayload(vertexPayload.getProperties(),
headers, true));
Vertex validatedVertex = OxmModelValidator.validateIncomingUpsertPayload(null, version, vertexPayload.getType(),
vertexPayload.getProperties());
Vertex persistedVertex = addBulkVertex(validatedVertex, version, txId);
Vertex outgoingVertex = OxmModelValidator.validateOutgoingPayload(version, persistedVertex);
vertices.put(item.getKey(), outgoingVertex);
}
// Update vertex
else if (opr.getValue().getAsString().equalsIgnoreCase("modify")) {
vertexPayload.setProperties(CrudServiceUtil.mergeHeaderInFoToPayload(vertexPayload.getProperties(),
headers, false));
Vertex validatedVertex = OxmModelValidator.validateIncomingUpsertPayload(vertexPayload.getId(), version,
vertexPayload.getType(), vertexPayload.getProperties());
Vertex persistedVertex = updateBulkVertex(validatedVertex, vertexPayload.getId(), version, txId);
Vertex outgoingVertex = OxmModelValidator.validateOutgoingPayload(version, persistedVertex);
vertices.put(item.getKey(), outgoingVertex);
}
// Patch vertex
else if (opr.getValue().getAsString().equalsIgnoreCase("patch")) {
if ( (vertexPayload.getId() == null) || (vertexPayload.getType() == null) ) {
throw new CrudException("id and type must be specified for patch request", Status.BAD_REQUEST);
}
vertexPayload.setProperties(CrudServiceUtil.mergeHeaderInFoToPayload(vertexPayload.getProperties(),
headers, false));
Vertex existingVertex = dao.getVertex(vertexPayload.getId(), OxmModelValidator.resolveCollectionType(version, vertexPayload.getType()), version);
Vertex validatedVertex = OxmModelValidator.validateIncomingPatchPayload(vertexPayload.getId(),
version, vertexPayload.getType(), vertexPayload.getProperties(), existingVertex);
Vertex persistedVertex = updateBulkVertex(validatedVertex, vertexPayload.getId(), version, txId);
Vertex outgoingVertex = OxmModelValidator.validateOutgoingPayload(version, persistedVertex);
vertices.put(item.getKey(), outgoingVertex);
}
}
// Step 4: Handle edge add/modify
for (JsonElement v : payload.getRelationships()) {
List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
v.getAsJsonObject().entrySet());
if (entries.size() != 2) {
throw new CrudException("", Status.BAD_REQUEST);
}
Map.Entry<String, JsonElement> opr = entries.get(0);
Map.Entry<String, JsonElement> item = entries.get(1);
EdgePayload edgePayload = EdgePayload.fromJson(item.getValue().getAsJsonObject().toString());
// Add/Update edge
if (opr.getValue().getAsString().equalsIgnoreCase("add")
|| opr.getValue().getAsString().equalsIgnoreCase("modify")
|| opr.getValue().getAsString().equalsIgnoreCase("patch")) {
Edge validatedEdge;
Edge persistedEdge;
if (opr.getValue().getAsString().equalsIgnoreCase("add")) {
// Fix the source/destination
if (edgePayload.getSource().startsWith("$")) {
Vertex source = vertices.get(edgePayload.getSource().substring(1));
if (source == null) {
throw new CrudException("Not able to find vertex: " + edgePayload.getSource().substring(1),
Status.INTERNAL_SERVER_ERROR);
}
edgePayload
.setSource("services/inventory/" + version + "/" + source.getType() + "/" + source.getId().get());
}
if (edgePayload.getTarget().startsWith("$")) {
Vertex target = vertices.get(edgePayload.getTarget().substring(1));
if (target == null) {
throw new CrudException("Not able to find vertex: " + edgePayload.getTarget().substring(1),
Status.INTERNAL_SERVER_ERROR);
}
edgePayload
.setTarget("services/inventory/" + version + "/" + target.getType() + "/" + target.getId().get());
}
validatedEdge = RelationshipSchemaValidator.validateIncomingAddPayload(version, edgePayload.getType(),
edgePayload);
persistedEdge = addBulkEdge(validatedEdge, version, txId);
} else if (opr.getValue().getAsString().equalsIgnoreCase("modify")) {
Edge edge = dao.getEdge(edgePayload.getId(), edgePayload.getType(), txId);
validatedEdge = RelationshipSchemaValidator.validateIncomingUpdatePayload(edge, version, edgePayload);
persistedEdge = updateBulkEdge(validatedEdge, version, txId);
} else {
if ( (edgePayload.getId() == null) || (edgePayload.getType() == null) ) {
throw new CrudException("id and type must be specified for patch request", Status.BAD_REQUEST);
}
Edge existingEdge = dao.getEdge(edgePayload.getId(), edgePayload.getType(), txId);
Edge patchedEdge = RelationshipSchemaValidator.validateIncomingPatchPayload(existingEdge, version, edgePayload);
persistedEdge = updateBulkEdge(patchedEdge, version, txId);
}
Edge outgoingEdge = RelationshipSchemaValidator.validateOutgoingPayload(version, persistedEdge);
edges.put(item.getKey(), outgoingEdge);
}
}
// commit transaction
dao.commitTransaction(txId);
} catch (CrudException ex) {
dao.rollbackTransaction(txId);
throw ex;
} catch (Exception ex) {
dao.rollbackTransaction(txId);
throw ex;
} finally {
if (dao.transactionExists(txId)) {
dao.rollbackTransaction(txId);
}
}
return CrudResponseBuilder.buildUpsertBulkResponse(vertices, edges, version, payload);
}
public abstract String addVertex(String version, String type, VertexPayload payload) throws CrudException;
public abstract String updateVertex(String version, String id, String type, VertexPayload payload) throws CrudException;
public abstract String patchVertex(String version, String id, String type, VertexPayload payload) throws CrudException;
public abstract String deleteVertex(String version, String id, String type) throws CrudException;
public abstract String addEdge(String version, String type, EdgePayload payload) throws CrudException;
public abstract String deleteEdge(String version, String id, String type) throws CrudException;
public abstract String updateEdge(String version, String id, String type, EdgePayload payload) throws CrudException;
public abstract String patchEdge(String version, String id, String type, EdgePayload payload) throws CrudException;
protected abstract Vertex addBulkVertex(Vertex vertex, String version, String dbTransId) throws CrudException;
protected abstract Vertex updateBulkVertex(Vertex vertex, String id, String version, String dbTransId) throws CrudException;
protected abstract void deleteBulkVertex(String id, String version, String type, String dbTransId) throws CrudException;
protected abstract Edge addBulkEdge(Edge edge, String version, String dbTransId) throws CrudException;
protected abstract Edge updateBulkEdge(Edge edge, String version, String dbTransId) throws CrudException;
protected abstract void deleteBulkEdge(String id, String version, String type, String dbTransId) throws CrudException;
}
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