src/main/java/org/onap/crud/service/CrudAsyncGraphDataService.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 com.att.ecomp.event.api.EventConsumer;
  27 import com.att.ecomp.event.api.EventPublisher;
  28 import com.google.gson.JsonElement;
  29
  30 import org.onap.aai.cl.api.LogFields;
  31 import org.onap.aai.cl.api.Logger;
  32 import org.onap.aai.cl.eelf.LoggerFactory;
  33 import org.onap.aai.cl.mdc.MdcContext;
  34 import org.onap.aai.cl.mdc.MdcOverride;
  35 import org.onap.crud.dao.GraphDao;
  36 import org.onap.crud.entity.Edge;
  37 import org.onap.crud.entity.Vertex;
  38 import org.onap.crud.event.GraphEvent;
  39 import org.onap.crud.event.GraphEvent.GraphEventOperation;
  40 import org.onap.crud.event.GraphEvent.GraphEventResult;
  41 import org.onap.crud.event.GraphEventEdge;
  42 import org.onap.crud.event.GraphEventVertex;
  43 import org.onap.crud.exception.CrudException;
  44 import org.onap.crud.logging.CrudServiceMsgs;
  45 import org.onap.crud.parser.CrudResponseBuilder;
  46 import org.onap.crud.util.CrudProperties;
  47 import org.onap.crud.util.CrudServiceConstants;
  48 import org.onap.crud.util.CrudServiceUtil;
  49 import org.onap.schema.OxmModelValidator;
  50 import org.onap.schema.RelationshipSchemaValidator;
  51
  52 import java.text.SimpleDateFormat;
  53 import java.util.ArrayList;
  54 import java.util.HashMap;
  55 import java.util.List;
  56 import java.util.Map;
  57 import java.util.Timer;
  58 import java.util.concurrent.Callable;
  59 import java.util.concurrent.CountDownLatch;
  60 import java.util.concurrent.ExecutionException;
  61 import java.util.concurrent.ExecutorService;
  62 import java.util.concurrent.Executors;
  63 import java.util.concurrent.Future;
  64 import java.util.concurrent.TimeUnit;
  65 import java.util.concurrent.TimeoutException;
  66 import javax.annotation.PreDestroy;
  67 import javax.ws.rs.core.HttpHeaders;
  68 import javax.ws.rs.core.Response.Status;
  69
  70 public class CrudAsyncGraphDataService extends AbstractGraphDataService {
  71
  72   private static Integer requestTimeOut;
  73
  74   private EventPublisher asyncRequestPublisher;
  75
  76   private Timer timer;
  77
  78   public static final Integer DEFAULT_REQUEST_TIMEOUT = 30000;
  79   private static final Integer DEFAULT_ASYNC_RESPONSE_PROCESS_POLL_INTERVAL = 1000;
  80
  81   private static Logger logger = LoggerFactory.getInstance()
  82     .getLogger(CrudAsyncGraphDataService.class.getName());
  83   private static Logger metricsLogger = LoggerFactory.getInstance()
  84     .getMetricsLogger(CrudAsyncGraphDataService.class.getName());
  85   private static LogFields OK_FIELDS = new LogFields();
  86
  87   static {
  88                 OK_FIELDS.setField(Status.OK, Status.OK.toString());
  89   }
  90
  91   public static Integer getRequestTimeOut() {
  92     return requestTimeOut;
  93   }
  94
  95   public CrudAsyncGraphDataService(GraphDao dao,
  96                   EventPublisher asyncRequestPublisher,
  97                   EventConsumer asyncResponseConsumer) throws CrudException {
  98
  99      super(dao);
 100
 101     requestTimeOut = DEFAULT_REQUEST_TIMEOUT;
 102     try {
 103       requestTimeOut
 104         = Integer.parseInt(CrudProperties.get(CrudServiceConstants.CRD_ASYNC_REQUEST_TIMEOUT));
 105     } catch (NumberFormatException ex) {
 106       // Leave it as the default
 107     }
 108
 109     Integer responsePollInterval = DEFAULT_ASYNC_RESPONSE_PROCESS_POLL_INTERVAL;
 110     try {
 111       responsePollInterval = Integer
 112         .parseInt(CrudProperties
 113                   .get(CrudServiceConstants.CRD_ASYNC_RESPONSE_PROCESS_POLL_INTERVAL));
 114     } catch (Exception ex) {
 115       logger.error(CrudServiceMsgs.ASYNC_DATA_SERVICE_ERROR, "Unable to parse "
 116                    + CrudServiceConstants.CRD_ASYNC_RESPONSE_PROCESS_POLL_INTERVAL
 117                    + " error: " + ex.getMessage());
 118     }
 119
 120     // Start the Response Consumer timer
 121     CrudAsyncResponseConsumer crudAsyncResponseConsumer
 122       = new CrudAsyncResponseConsumer(asyncResponseConsumer);
 123     timer = new Timer("crudAsyncResponseConsumer-1");
 124     timer.schedule(crudAsyncResponseConsumer, responsePollInterval, responsePollInterval);
 125
 126     this.asyncRequestPublisher = asyncRequestPublisher;
 127
 128     logger.info(CrudServiceMsgs.ASYNC_DATA_SERVICE_INFO,
 129                 "CrudAsyncGraphDataService initialized SUCCESSFULLY!");
 130   }
 131
 132   public class CollectGraphResponse implements Callable<GraphEvent> {
 133     private volatile GraphEvent graphEvent;
 134     private volatile CountDownLatch latch = new CountDownLatch(1);
 135
 136     @Override
 137     public GraphEvent call() throws TimeoutException {
 138       try {
 139         // Wait until graphEvent is available
 140         latch.await(CrudAsyncGraphDataService.getRequestTimeOut(), TimeUnit.MILLISECONDS);
 141       } catch (InterruptedException e) {
 142         latch.countDown();
 143         if (this.graphEvent != null) {
 144           return this.graphEvent;
 145         } else {
 146           throw new TimeoutException();
 147         }
 148       }
 149       return this.graphEvent;
 150     }
 151
 152     public void populateGraphEvent(GraphEvent event) {
 153       this.graphEvent = event;
 154       latch.countDown();
 155     }
 156   }
 157
 158   private GraphEvent sendAndWait(GraphEvent event) throws CrudException {
 159
 160     long startTimeInMs = System.currentTimeMillis();
 161     SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX");
 162     MdcOverride override = new MdcOverride();
 163     override.addAttribute(MdcContext.MDC_START_TIME, formatter.format(startTimeInMs));
 164
 165     // publish to request queue
 166     try {
 167       asyncRequestPublisher.sendSync(event.toJson());
 168     } catch (Exception e) {
 169       throw new CrudException("Error publishing request " + event.getTransactionId() + "  Cause: " + e.getMessage(), Status.INTERNAL_SERVER_ERROR);
 170     }
 171
 172     logger.debug(CrudServiceMsgs.ASYNC_DATA_SERVICE_INFO, "Event Sent ="+event.toJson());
 173
 174     logger.info(CrudServiceMsgs.ASYNC_DATA_SERVICE_INFO,
 175                 "Event submitted of type: " + event.getObjectType() + " with key: " + event.getObjectKey()
 176                 + " , transaction-id: " + event.getTransactionId() + " , operation: "
 177                 + event.getOperation().toString());
 178
 179     ExecutorService executor = Executors
 180       .newSingleThreadExecutor(new CrudThreadFactory("TX-" + event.getTransactionId()));
 181     CollectGraphResponse collector = new CollectGraphResponse();
 182     CrudAsyncGraphEventCache.put(event.getTransactionId(), collector);
 183     GraphEvent response;
 184     Future<GraphEvent> future = executor.submit(collector);
 185     try {
 186       response = future.get(requestTimeOut, TimeUnit.MILLISECONDS);
 187
 188     } catch (InterruptedException | ExecutionException | TimeoutException e) {
 189       CrudAsyncGraphEventCache.invalidate(event.getTransactionId());
 190       logger.error(CrudServiceMsgs.ASYNC_DATA_SERVICE_ERROR,
 191                    "Request timed out for transactionId: " + event.getTransactionId());
 192       future.cancel(true);
 193       throw new CrudException("Timed out , transactionId: " + event.getTransactionId()
 194                               + " , operation: " + event.getOperation().toString(), Status.INTERNAL_SERVER_ERROR);
 195     } finally {
 196       //Kill the thread as the work is completed
 197       executor.shutdownNow();
 198     }
 199     metricsLogger.info(CrudServiceMsgs.ASYNC_DATA_SERVICE_INFO, OK_FIELDS, override,
 200             "Total elapsed time for operation: " + event.getOperation().toString()
 201             + " , transactionId: " + event.getTransactionId() + " is "
 202             + Long.toString(System.currentTimeMillis() - startTimeInMs) + " ms");
 203     return response;
 204   }
 205
 206   public String addVertex(String version, String type, VertexPayload payload) throws CrudException {
 207     // Validate the incoming payload
 208     Vertex vertex = OxmModelValidator.validateIncomingUpsertPayload(null, version,
 209                                                                     type, payload.getProperties());
 210     // Create graph request event
 211     GraphEvent event = GraphEvent.builder(GraphEventOperation.CREATE)
 212       .vertex(GraphEventVertex.fromVertex(vertex, version)).build();
 213
 214     GraphEvent response = sendAndWait(event);
 215     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 216       logSuccessResponse(event, response);
 217       return CrudResponseBuilder.buildUpsertVertexResponse(
 218                                                            OxmModelValidator.validateOutgoingPayload(version,
 219                                                                                                      response.getVertex().toVertex()), version);
 220     } else {
 221       logErrorResponse(event, response);
 222       throw new CrudException("Operation Failed with transaction-id: " + response.getTransactionId()
 223                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 224     }
 225
 226   }
 227
 228   public String addEdge(String version, String type, EdgePayload payload) throws CrudException {
 229     Edge edge = RelationshipSchemaValidator.validateIncomingAddPayload(version, type, payload);
 230     // Create graph request event
 231     GraphEvent event = GraphEvent.builder(GraphEventOperation.CREATE)
 232       .edge(GraphEventEdge.fromEdge(edge, version)).build();
 233
 234     GraphEvent response = sendAndWait(event);
 235     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 236       logSuccessResponse(event, response);
 237       return CrudResponseBuilder.buildUpsertEdgeResponse(
 238                                                          RelationshipSchemaValidator.validateOutgoingPayload(version, response.getEdge().toEdge()),
 239                                                          version);
 240     } else {
 241       logErrorResponse(event, response);
 242       throw new CrudException("Operation Failed with transaction-id: " + response.getTransactionId()
 243                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 244     }
 245   }
 246
 247   public String updateVertex(String version, String id, String type, VertexPayload payload)
 248     throws CrudException {
 249     Vertex vertex = OxmModelValidator.validateIncomingUpsertPayload(id, version,
 250                                                                     type, payload.getProperties());
 251     GraphEvent event = GraphEvent.builder(GraphEventOperation.UPDATE)
 252       .vertex(GraphEventVertex.fromVertex(vertex, version)).build();
 253
 254     GraphEvent response = sendAndWait(event);
 255     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 256       logSuccessResponse(event, response);
 257       return CrudResponseBuilder.buildUpsertVertexResponse(
 258                                                            OxmModelValidator.validateOutgoingPayload(version, response.getVertex().toVertex()),
 259                                                            version);
 260     } else {
 261       logErrorResponse(event, response);
 262       throw new CrudException("Operation Failed with transaction-id: " + response.getTransactionId()
 263                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 264     }
 265
 266   }
 267
 268   public String patchVertex(String version, String id, String type, VertexPayload payload)
 269     throws CrudException {
 270     Vertex existingVertex
 271       = dao.getVertex(id, OxmModelValidator.resolveCollectionType(version, type));
 272     Vertex patchedVertex = OxmModelValidator.validateIncomingPatchPayload(id, version,
 273                                                                           type, payload.getProperties(),
 274                                                                           existingVertex);
 275     GraphEvent event = GraphEvent.builder(GraphEventOperation.UPDATE)
 276       .vertex(GraphEventVertex.fromVertex(patchedVertex, version)).build();
 277
 278     GraphEvent response = sendAndWait(event);
 279     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 280       logSuccessResponse(event, response);
 281       return CrudResponseBuilder.buildUpsertVertexResponse(
 282                                                            OxmModelValidator.validateOutgoingPayload(version, response.getVertex().toVertex()),
 283                                                            version);
 284     } else {
 285       logErrorResponse(event, response);
 286       throw new CrudException("Operation Failed with transaction-id: " + response.getTransactionId()
 287                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 288     }
 289
 290   }
 291
 292   public String deleteVertex(String version, String id, String type) throws CrudException {
 293     type = OxmModelValidator.resolveCollectionType(version, type);
 294     GraphEvent event = GraphEvent.builder(GraphEventOperation.DELETE)
 295       .vertex(new GraphEventVertex(id, version, type, null)).build();
 296
 297     GraphEvent response = sendAndWait(event);
 298     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 299       logSuccessResponse(event, response);
 300       return "";
 301     } else {
 302       logErrorResponse(event, response);
 303       throw new CrudException("Operation Failed with transaction-id: " + response.getTransactionId()
 304                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 305     }
 306
 307   }
 308
 309   public String deleteEdge(String version, String id, String type) throws CrudException {
 310     RelationshipSchemaValidator.validateType(version, type);
 311     GraphEvent event = GraphEvent.builder(GraphEventOperation.DELETE)
 312       .edge(new GraphEventEdge(id, version, type, null, null, null)).build();
 313
 314     GraphEvent response = sendAndWait(event);
 315     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 316       logSuccessResponse(event, response);
 317       return "";
 318     } else {
 319       logErrorResponse(event, response);
 320       throw new CrudException("Operation Failed with transaction-id: " + response.getTransactionId()
 321                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 322     }
 323
 324   }
 325
 326   public String updateEdge(String version, String id, String type, EdgePayload payload)
 327     throws CrudException {
 328     Edge edge = dao.getEdge(id, type);
 329     Edge validatedEdge = RelationshipSchemaValidator.validateIncomingUpdatePayload(edge, version,
 330                                                                                    payload);
 331     GraphEvent event = GraphEvent.builder(GraphEventOperation.UPDATE)
 332       .edge(GraphEventEdge.fromEdge(validatedEdge, version)).build();
 333
 334     GraphEvent response = sendAndWait(event);
 335     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 336       logSuccessResponse(event, response);
 337       return CrudResponseBuilder.buildUpsertEdgeResponse(
 338                                                          RelationshipSchemaValidator.validateOutgoingPayload(version,
 339                                                                                                              response.getEdge().toEdge()), version);
 340     } else {
 341       logErrorResponse(event, response);
 342       throw new CrudException("Operation Failed with transaction-id: " + response.getTransactionId()
 343                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 344     }
 345
 346   }
 347
 348   public String patchEdge(String version, String id, String type, EdgePayload payload)
 349     throws CrudException {
 350     Edge edge = dao.getEdge(id, type);
 351     Edge patchedEdge = RelationshipSchemaValidator.validateIncomingPatchPayload(edge, version,
 352                                                                                 payload);
 353     GraphEvent event = GraphEvent.builder(GraphEventOperation.UPDATE)
 354       .edge(GraphEventEdge.fromEdge(patchedEdge, version)).build();
 355
 356     GraphEvent response = sendAndWait(event);
 357     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 358       logSuccessResponse(event, response);
 359       return CrudResponseBuilder.buildUpsertEdgeResponse(
 360                                                          RelationshipSchemaValidator.validateOutgoingPayload(version, response.getEdge().toEdge()),
 361                                                          version);
 362     } else {
 363       logErrorResponse(event, response);
 364       throw new CrudException("Operation Failed with transaction-id: " + response.getTransactionId()
 365                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 366     }
 367
 368   }
 369
 370   @PreDestroy
 371   protected void preShutdown() {
 372     timer.cancel();
 373
 374   }
 375
 376   @Override
 377   public String addBulk(String version, BulkPayload payload, HttpHeaders headers) throws CrudException {
 378     HashMap<String, Vertex> vertices = new HashMap<String, Vertex>();
 379     HashMap<String, Edge> edges = new HashMap<String, Edge>();
 380     String txId = dao.openTransaction();
 381
 382     try {
 383       // Handle vertices
 384       for (JsonElement v : payload.getObjects()) {
 385         List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
 386             v.getAsJsonObject().entrySet());
 387
 388         if (entries.size() != 2) {
 389           throw new CrudException("", Status.BAD_REQUEST);
 390         }
 391         Map.Entry<String, JsonElement> opr = entries.get(0);
 392         Map.Entry<String, JsonElement> item = entries.get(1);
 393
 394         VertexPayload vertexPayload = VertexPayload.fromJson(item.getValue().getAsJsonObject().toString());
 395
 396         if (opr.getValue().getAsString().equalsIgnoreCase("add")
 397             || opr.getValue().getAsString().equalsIgnoreCase("modify")) {
 398           Vertex validatedVertex;
 399           GraphEvent event;
 400
 401           if (opr.getValue().getAsString().equalsIgnoreCase("add")) {
 402                 vertexPayload.setProperties(CrudServiceUtil.mergeHeaderInFoToPayload(vertexPayload.getProperties(),
 403                                   headers, true));
 404             // Publish add-vertex event
 405             validatedVertex = OxmModelValidator.validateIncomingUpsertPayload(null, version, vertexPayload.getType(),
 406                 vertexPayload.getProperties());
 407             event = GraphEvent.builder(GraphEventOperation.CREATE)
 408                 .vertex(GraphEventVertex.fromVertex(validatedVertex, version)).build();
 409           } else {
 410                 vertexPayload.setProperties(CrudServiceUtil.mergeHeaderInFoToPayload(vertexPayload.getProperties(),
 411                                   headers, false));
 412                 // Publish update-vertex event
 413             validatedVertex = OxmModelValidator.validateIncomingUpsertPayload(vertexPayload.getId(), version,
 414                 vertexPayload.getType(), vertexPayload.getProperties());
 415             event = GraphEvent.builder(GraphEventOperation.UPDATE)
 416                 .vertex(GraphEventVertex.fromVertex(validatedVertex, version)).build();
 417           }
 418
 419           event.setDbTransactionId(txId);
 420           GraphEvent response = publishEvent(event);
 421           Vertex persistedVertex = response.getVertex().toVertex();
 422           Vertex outgoingVertex = OxmModelValidator.validateOutgoingPayload(version, persistedVertex);
 423           vertices.put(item.getKey(), outgoingVertex);
 424         } else if (opr.getValue().getAsString().equalsIgnoreCase("delete")) {
 425           // Publish delete-vertex event
 426           String type = OxmModelValidator.resolveCollectionType(version, vertexPayload.getType());
 427           GraphEvent event = GraphEvent.builder(GraphEventOperation.DELETE)
 428             .vertex(new GraphEventVertex(vertexPayload.getId(), version, type, null)).build();
 429           event.setDbTransactionId(txId);
 430           publishEvent(event);
 431         }
 432       }
 433
 434       // Handle Edges
 435       for (JsonElement v : payload.getRelationships()) {
 436         List<Map.Entry<String, JsonElement>> entries = new ArrayList<Map.Entry<String, JsonElement>>(
 437             v.getAsJsonObject().entrySet());
 438
 439         if (entries.size() != 2) {
 440           throw new CrudException("", Status.BAD_REQUEST);
 441         }
 442         Map.Entry<String, JsonElement> opr = entries.get(0);
 443         Map.Entry<String, JsonElement> item = entries.get(1);
 444
 445         EdgePayload edgePayload = EdgePayload.fromJson(item.getValue().getAsJsonObject().toString());
 446
 447         if (opr.getValue().getAsString().equalsIgnoreCase("add")
 448             || opr.getValue().getAsString().equalsIgnoreCase("modify")) {
 449           Edge validatedEdge;
 450           Edge persistedEdge;
 451           if (opr.getValue().getAsString().equalsIgnoreCase("add")) {
 452             // Fix the source/destination
 453             if (edgePayload.getSource().startsWith("$")) {
 454               Vertex source = vertices.get(edgePayload.getSource().substring(1));
 455               if (source == null) {
 456                 throw new CrudException("Not able to find vertex: " + edgePayload.getSource().substring(1),
 457                     Status.INTERNAL_SERVER_ERROR);
 458               }
 459               edgePayload
 460                   .setSource("services/inventory/" + version + "/" + source.getType() + "/" + source.getId().get());
 461             }
 462             if (edgePayload.getTarget().startsWith("$")) {
 463               Vertex target = vertices.get(edgePayload.getTarget().substring(1));
 464               if (target == null) {
 465                 throw new CrudException("Not able to find vertex: " + edgePayload.getTarget().substring(1),
 466                     Status.INTERNAL_SERVER_ERROR);
 467               }
 468               edgePayload
 469                   .setTarget("services/inventory/" + version + "/" + target.getType() + "/" + target.getId().get());
 470             }
 471             validatedEdge = RelationshipSchemaValidator.validateIncomingAddPayload(version, edgePayload.getType(),
 472                 edgePayload);
 473             GraphEvent event = GraphEvent.builder(GraphEventOperation.CREATE)
 474                 .edge(GraphEventEdge.fromEdge(validatedEdge, version)).build();
 475             event.setDbTransactionId(txId);
 476             GraphEvent response = publishEvent(event);
 477             persistedEdge =  response.getEdge().toEdge();
 478           } else {
 479             Edge edge = dao.getEdge(edgePayload.getId(), edgePayload.getType(), txId);
 480             validatedEdge = RelationshipSchemaValidator.validateIncomingUpdatePayload(edge, version, edgePayload);
 481             GraphEvent event = GraphEvent.builder(GraphEventOperation.UPDATE)
 482                 .edge(GraphEventEdge.fromEdge(validatedEdge, version)).build();
 483             event.setDbTransactionId(txId);
 484             GraphEvent response = publishEvent(event);
 485             persistedEdge = response.getEdge().toEdge();
 486           }
 487
 488           Edge outgoingEdge = RelationshipSchemaValidator.validateOutgoingPayload(version, persistedEdge);
 489           edges.put(item.getKey(), outgoingEdge);
 490         } else if (opr.getValue().getAsString().equalsIgnoreCase("delete")) {
 491           RelationshipSchemaValidator.validateType(version, edgePayload.getType());
 492           // Publish delete-vertex event
 493           GraphEvent event = GraphEvent.builder(GraphEventOperation.DELETE)
 494             .edge(new GraphEventEdge(edgePayload.getId(), version, edgePayload.getType(), null, null, null)).build();
 495           event.setDbTransactionId(txId);
 496           publishEvent(event);
 497         }
 498       }
 499
 500       // commit transaction
 501       dao.commitTransaction(txId);
 502     } catch (CrudException ex) {
 503       dao.rollbackTransaction(txId);
 504       throw ex;
 505     } catch (Exception ex) {
 506       dao.rollbackTransaction(txId);
 507       throw ex;
 508     } finally {
 509       if (dao.transactionExists(txId)) {
 510         dao.rollbackTransaction(txId);
 511       }
 512     }
 513
 514     return CrudResponseBuilder.buildUpsertBulkResponse(vertices, edges, version, payload);
 515   }
 516
 517   private GraphEvent publishEvent(GraphEvent event) throws CrudException {
 518     GraphEvent response = sendAndWait(event);
 519     if (response.getResult().equals(GraphEventResult.SUCCESS)) {
 520       logSuccessResponse(event, response);
 521     } else {
 522       logErrorResponse(event, response);
 523       throw new CrudException("Operation failed with transaction-id: " + response.getTransactionId()
 524                               + " Error: " + response.getErrorMessage(), response.getHttpErrorStatus());
 525     }
 526
 527     return response;
 528   }
 529
 530   private void logSuccessResponse(GraphEvent event, GraphEvent response) {
 531     logger.info(CrudServiceMsgs.ASYNC_DATA_SERVICE_INFO,
 532         "Event response received: " + response.getObjectType() + " with key: "
 533         + response.getObjectKey() + " , transaction-id: " + response.getTransactionId()
 534         + " , operation: " + event.getOperation().toString() + " , result: "
 535         + response.getResult());
 536   }
 537
 538   private void logErrorResponse(GraphEvent event, GraphEvent response) {
 539     logger.info(CrudServiceMsgs.ASYNC_DATA_SERVICE_INFO,
 540         "Event response received: " + response.getObjectType() + " with key: "
 541         + response.getObjectKey() + " , transaction-id: " + response.getTransactionId()
 542         + " , operation: " + event.getOperation().toString() + " , result: "
 543         + response.getResult() + " , error: " + response.getErrorMessage());
 544   }
 545
 546 }