src/main/java/org/onap/crud/service/AbstractGraphDataService.java

   1 /**
   2  * ============LICENSE_START=======================================================
   3  * Gizmo
   4  * ================================================================================
   5  * Copyright © 2017 AT&T Intellectual Property.
   6  * Copyright © 2017 Amdocs
   7  * All rights reserved.
   8  * ================================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *    http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  * ============LICENSE_END=========================================================
  21  *
  22  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  23  */
  24 package org.onap.crud.service;
  25
  26 import java.util.ArrayList;
  27 import java.util.HashMap;
  28 import java.util.List;
  29 import java.util.Map;
  30
  31 import javax.ws.rs.core.HttpHeaders;
  32 import javax.ws.rs.core.Response.Status;
  33
  34 import org.onap.crud.dao.GraphDao;
  35 import org.onap.crud.entity.Edge;
  36 import org.onap.crud.entity.Vertex;
  37 import org.onap.crud.exception.CrudException;
  38 import org.onap.crud.parser.CrudResponseBuilder;
  39 import org.onap.crud.util.CrudServiceUtil;
  40 import org.onap.schema.OxmModelValidator;
  41 import org.onap.schema.RelationshipSchemaValidator;
  42
  43 import com.google.gson.JsonElement;
  44
  45 public abstract class AbstractGraphDataService {
  46   protected GraphDao dao;
  47
  48   public AbstractGraphDataService(GraphDao dao) throws CrudException {
  49     this.dao = dao;
  50
  51     CrudServiceUtil.loadModels();
  52   }
  53
  54   public String getEdge(String version, String id, String type) throws CrudException {
  55     RelationshipSchemaValidator.validateType(version, type);
  56     Edge edge = dao.getEdge(id, type);
  57
  58     return CrudResponseBuilder.buildGetEdgeResponse(RelationshipSchemaValidator.validateOutgoingPayload(version, edge), version);
  59   }
  60
  61   public String getEdges(String version, String type, Map<String, String> filter) throws CrudException {
  62     RelationshipSchemaValidator.validateType(version, type);
  63     List<Edge> items = dao.getEdges(type, RelationshipSchemaValidator.resolveCollectionfilter(version, type, filter));
  64     return CrudResponseBuilder.buildGetEdgesResponse(items, version);
  65   }
  66
  67   public String getVertex(String version, String id, String type) throws CrudException {
  68     type = OxmModelValidator.resolveCollectionType(version, type);
  69     Vertex vertex = dao.getVertex(id, type);
  70     List<Edge> edges = dao.getVertexEdges(id);
  71     return CrudResponseBuilder.buildGetVertexResponse(OxmModelValidator.validateOutgoingPayload(version, vertex), edges,
  72         version);
  73   }
  74
  75   public String getVertices(String version, String type, Map<String, String> filter) throws CrudException {
  76     type = OxmModelValidator.resolveCollectionType(version, type);
  77     List<Vertex> items = dao.getVertices(type, OxmModelValidator.resolveCollectionfilter(version, type, filter));
  78     return CrudResponseBuilder.buildGetVerticesResponse(items, version);
  79   }
  80
  81   public String addBulk(String version, BulkPayload payload, HttpHeaders headers) throws CrudException {
  82     HashMap<String, Vertex> vertices = new HashMap<String, Vertex>();
  83     HashMap<String, Edge> edges = new HashMap<String, Edge>();
  84
  85     String txId = dao.openTransaction();
  86
  87     try {
  88       // Step 1. Handle edge deletes (must happen before vertex deletes)
  89       for (JsonElement v : payload.getRelationships()) {
  90         List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
  91             v.getAsJsonObject().entrySet());
  92
  93         if (entries.size() != 2) {
  94           throw new CrudException("", Status.BAD_REQUEST);
  95         }
  96         Map.Entry<String, JsonElement> opr = entries.get(0);
  97         Map.Entry<String, JsonElement> item = entries.get(1);
  98         EdgePayload edgePayload = EdgePayload.fromJson(item.getValue().getAsJsonObject().toString());
  99
 100         if (opr.getValue().getAsString().equalsIgnoreCase("delete")) {
 101           RelationshipSchemaValidator.validateType(version, edgePayload.getType());
 102           deleteBulkEdge(edgePayload.getId(), version, edgePayload.getType(), txId);
 103         }
 104       }
 105
 106       // Step 2: Handle vertex deletes
 107       for (JsonElement v : payload.getObjects()) {
 108         List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
 109             v.getAsJsonObject().entrySet());
 110
 111         if (entries.size() != 2) {
 112           throw new CrudException("", Status.BAD_REQUEST);
 113         }
 114
 115         Map.Entry<String, JsonElement> opr = entries.get(0);
 116         Map.Entry<String, JsonElement> item = entries.get(1);
 117         VertexPayload vertexPayload = VertexPayload.fromJson(item.getValue().getAsJsonObject().toString());
 118
 119         if (opr.getValue().getAsString().equalsIgnoreCase("delete")) {
 120           String type = OxmModelValidator.resolveCollectionType(version, vertexPayload.getType());
 121           deleteBulkVertex(vertexPayload.getId(), version, type, txId);
 122         }
 123       }
 124
 125       // Step 3: Handle vertex add/modify (must happen before edge adds)
 126       for (JsonElement v : payload.getObjects()) {
 127         List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
 128             v.getAsJsonObject().entrySet());
 129
 130         if (entries.size() != 2) {
 131           throw new CrudException("", Status.BAD_REQUEST);
 132         }
 133         Map.Entry<String, JsonElement> opr = entries.get(0);
 134         Map.Entry<String, JsonElement> item = entries.get(1);
 135         VertexPayload vertexPayload = VertexPayload.fromJson(item.getValue().getAsJsonObject().toString());
 136
 137         // Add vertex
 138         if (opr.getValue().getAsString().equalsIgnoreCase("add")) {
 139           vertexPayload.setProperties(CrudServiceUtil.mergeHeaderInFoToPayload(vertexPayload.getProperties(),
 140               headers, true));
 141           Vertex validatedVertex = OxmModelValidator.validateIncomingUpsertPayload(null, version, vertexPayload.getType(),
 142               vertexPayload.getProperties());
 143           Vertex persistedVertex = addBulkVertex(validatedVertex, version, txId);
 144           Vertex outgoingVertex = OxmModelValidator.validateOutgoingPayload(version, persistedVertex);
 145           vertices.put(item.getKey(), outgoingVertex);
 146         }
 147
 148         // Update vertex
 149         else if (opr.getValue().getAsString().equalsIgnoreCase("modify")) {
 150           vertexPayload.setProperties(CrudServiceUtil.mergeHeaderInFoToPayload(vertexPayload.getProperties(),
 151               headers, false));
 152           Vertex validatedVertex = OxmModelValidator.validateIncomingUpsertPayload(vertexPayload.getId(), version,
 153               vertexPayload.getType(), vertexPayload.getProperties());
 154           Vertex persistedVertex = updateBulkVertex(validatedVertex, vertexPayload.getId(), version, txId);
 155           Vertex outgoingVertex = OxmModelValidator.validateOutgoingPayload(version, persistedVertex);
 156           vertices.put(item.getKey(), outgoingVertex);
 157         }
 158       }
 159
 160       // Step 4: Handle edge add/modify
 161       for (JsonElement v : payload.getRelationships()) {
 162         List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
 163             v.getAsJsonObject().entrySet());
 164
 165         if (entries.size() != 2) {
 166           throw new CrudException("", Status.BAD_REQUEST);
 167         }
 168         Map.Entry<String, JsonElement> opr = entries.get(0);
 169         Map.Entry<String, JsonElement> item = entries.get(1);
 170         EdgePayload edgePayload = EdgePayload.fromJson(item.getValue().getAsJsonObject().toString());
 171
 172         // Add/Update edge
 173         if (opr.getValue().getAsString().equalsIgnoreCase("add")
 174             || opr.getValue().getAsString().equalsIgnoreCase("modify")) {
 175           Edge validatedEdge;
 176           Edge persistedEdge;
 177           if (opr.getValue().getAsString().equalsIgnoreCase("add")) {
 178             // Fix the source/destination
 179             if (edgePayload.getSource().startsWith("$")) {
 180               Vertex source = vertices.get(edgePayload.getSource().substring(1));
 181               if (source == null) {
 182                 throw new CrudException("Not able to find vertex: " + edgePayload.getSource().substring(1),
 183                     Status.INTERNAL_SERVER_ERROR);
 184               }
 185               edgePayload
 186                   .setSource("services/inventory/" + version + "/" + source.getType() + "/" + source.getId().get());
 187             }
 188             if (edgePayload.getTarget().startsWith("$")) {
 189               Vertex target = vertices.get(edgePayload.getTarget().substring(1));
 190               if (target == null) {
 191                 throw new CrudException("Not able to find vertex: " + edgePayload.getTarget().substring(1),
 192                     Status.INTERNAL_SERVER_ERROR);
 193               }
 194               edgePayload
 195                   .setTarget("services/inventory/" + version + "/" + target.getType() + "/" + target.getId().get());
 196             }
 197             validatedEdge = RelationshipSchemaValidator.validateIncomingAddPayload(version, edgePayload.getType(),
 198                 edgePayload);
 199             persistedEdge = addBulkEdge(validatedEdge, version, txId);
 200           } else {
 201             Edge edge = dao.getEdge(edgePayload.getId(), edgePayload.getType(), txId);
 202             validatedEdge = RelationshipSchemaValidator.validateIncomingUpdatePayload(edge, version, edgePayload);
 203             persistedEdge = updateBulkEdge(validatedEdge, version, txId);
 204           }
 205
 206           Edge outgoingEdge = RelationshipSchemaValidator.validateOutgoingPayload(version, persistedEdge);
 207           edges.put(item.getKey(), outgoingEdge);
 208         }
 209       }
 210
 211       // commit transaction
 212       dao.commitTransaction(txId);
 213     } catch (CrudException ex) {
 214       dao.rollbackTransaction(txId);
 215       throw ex;
 216     } catch (Exception ex) {
 217       dao.rollbackTransaction(txId);
 218       throw ex;
 219     } finally {
 220       if (dao.transactionExists(txId)) {
 221         dao.rollbackTransaction(txId);
 222       }
 223     }
 224
 225     return CrudResponseBuilder.buildUpsertBulkResponse(vertices, edges, version, payload);
 226   }
 227
 228
 229   public abstract String addVertex(String version, String type, VertexPayload payload) throws CrudException;
 230   public abstract String updateVertex(String version, String id, String type, VertexPayload payload) throws CrudException;
 231   public abstract String patchVertex(String version, String id, String type, VertexPayload payload) throws CrudException;
 232   public abstract String deleteVertex(String version, String id, String type) throws CrudException;
 233   public abstract String addEdge(String version, String type, EdgePayload payload) throws CrudException;
 234   public abstract String deleteEdge(String version, String id, String type) throws CrudException;
 235   public abstract String updateEdge(String version, String id, String type, EdgePayload payload) throws CrudException;
 236   public abstract String patchEdge(String version, String id, String type, EdgePayload payload) throws CrudException;
 237
 238   protected abstract Vertex addBulkVertex(Vertex vertex, String version, String dbTransId) throws CrudException;
 239   protected abstract Vertex updateBulkVertex(Vertex vertex, String id, String version, String dbTransId) throws CrudException;
 240   protected abstract void deleteBulkVertex(String id, String version, String type, String dbTransId) throws CrudException;
 241
 242   protected abstract Edge addBulkEdge(Edge edge, String version, String dbTransId) throws CrudException;
 243   protected abstract Edge updateBulkEdge(Edge edge, String version, String dbTransId) throws CrudException;
 244   protected abstract void deleteBulkEdge(String id, String version, String type, String dbTransId) throws CrudException;
 245 }