gerrit.onap Code Review - so.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP - SO
   4  * ================================================================================
   5  * Copyright (C) 2017 Huawei Technologies Co., Ltd. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.mso.apihandlerinfra;
  22
  23 import java.io.IOException;
  24 import java.util.ArrayList;
  25 import java.util.HashMap;
  26 import java.util.List;
  27 import java.util.Map;
  28
  29 import javax.ws.rs.Consumes;
  30 import javax.ws.rs.DELETE;
  31 import javax.ws.rs.GET;
  32 import javax.ws.rs.POST;
  33 import javax.ws.rs.Path;
  34 import javax.ws.rs.PathParam;
  35 import javax.ws.rs.Produces;
  36 import javax.ws.rs.core.MediaType;
  37 import javax.ws.rs.core.Response;
  38
  39 import org.apache.http.HttpResponse;
  40 import org.apache.http.HttpStatus;
  41 import org.codehaus.jackson.map.ObjectMapper;
  42 import org.openecomp.mso.apihandler.common.ErrorNumbers;
  43 import org.openecomp.mso.apihandler.common.RequestClient;
  44 import org.openecomp.mso.apihandler.common.RequestClientFactory;
  45 import org.openecomp.mso.apihandler.common.ResponseHandler;
  46 import org.openecomp.mso.apihandlerinfra.e2eserviceinstancebeans.E2EServiceInstanceRequest;
  47 import org.openecomp.mso.apihandlerinfra.e2eserviceinstancebeans.E2EUserParam;
  48 import org.openecomp.mso.apihandlerinfra.serviceinstancebeans.ModelInfo;
  49 import org.openecomp.mso.apihandlerinfra.serviceinstancebeans.RequestDetails;
  50 import org.openecomp.mso.apihandlerinfra.serviceinstancebeans.RequestInfo;
  51 import org.openecomp.mso.apihandlerinfra.serviceinstancebeans.RequestParameters;
  52 import org.openecomp.mso.apihandlerinfra.serviceinstancebeans.ServiceInstancesRequest;
  53 import org.openecomp.mso.apihandlerinfra.serviceinstancebeans.SubscriberInfo;
  54 import org.openecomp.mso.db.catalog.CatalogDatabase;
  55 import org.openecomp.mso.db.catalog.beans.Service;
  56 import org.openecomp.mso.db.catalog.beans.ServiceRecipe;
  57 import org.openecomp.mso.logger.MessageEnum;
  58 import org.openecomp.mso.logger.MsoAlarmLogger;
  59 import org.openecomp.mso.logger.MsoLogger;
  60 import org.openecomp.mso.requestsdb.InfraActiveRequests;
  61 import org.openecomp.mso.requestsdb.RequestsDatabase;
  62 import org.openecomp.mso.utils.UUIDChecker;
  63
  64 import com.wordnik.swagger.annotations.Api;
  65 import com.wordnik.swagger.annotations.ApiOperation;
  66
  67 @Path("/e2eServiceInstances")
  68 @Api(value="/e2eServiceInstances",description="API Requests for E2E Service Instances")
  69 public class E2EServiceInstances {
  70
  71         private HashMap<String, String> instanceIdMap = new HashMap<String,String>();
  72         private static MsoLogger msoLogger = MsoLogger.getMsoLogger (MsoLogger.Catalog.APIH);
  73         private static MsoAlarmLogger alarmLogger = new MsoAlarmLogger ();
  74         public final static String MSO_PROP_APIHANDLER_INFRA = "MSO_PROP_APIHANDLER_INFRA";
  75
  76         public E2EServiceInstances() {
  77         }
  78
  79         /**
  80      *POST Requests for E2E Service create Instance on a version provided
  81      */
  82
  83         @POST
  84         @Path("/{version:[vV][3-5]}")
  85         @Consumes(MediaType.APPLICATION_JSON)
  86         @Produces(MediaType.APPLICATION_JSON)
  87         @ApiOperation(value="Create a E2E Service Instance on a version provided",response=Response.class)
  88         public Response createE2EServiceInstance(String request, @PathParam("version") String version) {
  89
  90         return E2EserviceInstances(request, Action.createInstance,      null, version);
  91         }
  92
  93         /**
  94      *DELETE Requests for E2E Service delete Instance on a specified version and serviceId
  95      */
  96
  97         @DELETE
  98         @Path("/{version:[vV][3-5]}/{serviceId}")
  99         @Consumes(MediaType.APPLICATION_JSON)
 100         @Produces(MediaType.APPLICATION_JSON)
 101         @ApiOperation(value="Delete E2E Service Instance on a specified version and serviceId",response=Response.class)
 102         public Response deleteE2EServiceInstance(String request, @PathParam("version") String version, @PathParam("serviceId") String serviceId) {
 103
 104         instanceIdMap.put("serviceId", serviceId);
 105
 106         return E2EserviceInstances(request, Action.deleteInstance, null, version);
 107         }
 108
 109         private Response E2EserviceInstances(String requestJSON, Action action,
 110         HashMap<String, String> instanceIdMap, String version) {
 111
 112                 String requestId = UUIDChecker.generateUUID(msoLogger);
 113                 long startTime = System.currentTimeMillis();
 114                 msoLogger.debug("requestId is: " + requestId);
 115                 E2EServiceInstanceRequest sir = null;
 116
 117                 MsoRequest msoRequest = new MsoRequest(requestId);
 118                 ObjectMapper mapper = new ObjectMapper();
 119                 try {
 120                         sir = mapper
 121                                         .readValue(requestJSON, E2EServiceInstanceRequest.class);
 122
 123                 } catch (Exception e) {
 124
 125                         msoLogger.debug("Mapping of request to JSON object failed : ", e);
 126                         Response response = msoRequest.buildServiceErrorResponse(
 127                                         HttpStatus.SC_BAD_REQUEST,
 128                                         MsoException.ServiceException,
 129                                         "Mapping of request to JSON object failed.  "
 130                                                         + e.getMessage(), ErrorNumbers.SVC_BAD_PARAMETER,
 131                                                         null);
 132                         msoLogger.error(MessageEnum.APIH_REQUEST_VALIDATION_ERROR,
 133                                         MSO_PROP_APIHANDLER_INFRA, "", "",
 134                                         MsoLogger.ErrorCode.SchemaError, requestJSON, e);
 135                         msoLogger.recordAuditEvent(startTime, MsoLogger.StatusCode.ERROR,
 136                                         MsoLogger.ResponseCode.SchemaError,
 137                                         "Mapping of request to JSON object failed");
 138                         msoLogger.debug("End of the transaction, the final response is: "
 139                                         + (String) response.getEntity());
 140                         return response;
 141                 }
 142
 143                 InfraActiveRequests dup = null;
 144                 String instanceName = sir.getService().getName();
 145                 String requestScope = sir.getService().getParameters().getNodeType();
 146
 147                 try {
 148                         if(!(instanceName==null && "service".equals(requestScope) && (action == Action.createInstance || action
 149                                         == Action.activateInstance))){
 150                                 dup = (RequestsDatabase.getInstance()).checkInstanceNameDuplicate (instanceIdMap, instanceName, requestScope);
 151                         }
 152                 } catch (Exception e) {
 153                         msoLogger.error (MessageEnum.APIH_DUPLICATE_CHECK_EXC, MSO_PROP_APIHANDLER_INFRA, "", "", MsoLogger.ErrorCode.DataError, "Error during duplicate check ", e);
 154
 155                         Response response = msoRequest.buildServiceErrorResponse(HttpStatus.SC_INTERNAL_SERVER_ERROR, MsoException.ServiceException,
 156                                         e.getMessage(),
 157                                         ErrorNumbers.SVC_DETAILED_SERVICE_ERROR,
 158                                         null) ;
 159
 160
 161                         msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.DBAccessError, "Error during duplicate check");
 162                         msoLogger.debug ("End of the transaction, the final response is: " + (String) response.getEntity ());
 163                         return response;
 164                 }
 165
 166                 if (dup != null) {
 167                         // Found the duplicate record. Return the appropriate error.
 168                         String instance = null;
 169                         if(instanceName != null){
 170                                 instance = instanceName;
 171                         }else{
 172                                 instance = instanceIdMap.get(requestScope + "InstanceId");
 173                         }
 174                         String dupMessage = "Error: Locked instance - This " + requestScope + " (" + instance + ") " + "already has a request being worked with a status of " + dup.getRequestStatus() + " (RequestId - " + dup.getRequestId() + "). The existing request must finish or be cleaned up before proceeding.";
 175
 176                         Response response = msoRequest.buildServiceErrorResponse(HttpStatus.SC_CONFLICT, MsoException.ServiceException,
 177                                         dupMessage,
 178                                         ErrorNumbers.SVC_DETAILED_SERVICE_ERROR,
 179                                         null) ;
 180
 181
 182                         msoLogger.warn (MessageEnum.APIH_DUPLICATE_FOUND, dupMessage, "", "", MsoLogger.ErrorCode.SchemaError, "Duplicate request - Subscriber already has a request for this service");
 183                         msoRequest.createRequestRecord (Status.FAILED, action);
 184                         msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.Conflict, dupMessage);
 185                         msoLogger.debug ("End of the transaction, the final response is: " + (String) response.getEntity ());
 186                         return response;
 187                 }
 188
 189                 CatalogDatabase db = null;
 190                 RecipeLookupResult recipeLookupResult = null;
 191                 try {
 192                         db = CatalogDatabase.getInstance();
 193                         recipeLookupResult = getServiceInstanceOrchestrationURI(db, sir, action);
 194                 } catch (Exception e) {
 195                         msoLogger.error (MessageEnum.APIH_DB_ACCESS_EXC, MSO_PROP_APIHANDLER_INFRA, "", "", MsoLogger.ErrorCode.AvailabilityError, "Exception while communciate with Catalog DB", e);
 196                         msoRequest.setStatus (org.openecomp.mso.apihandlerinfra.vnfbeans.RequestStatusType.FAILED);
 197                         Response response = msoRequest.buildServiceErrorResponse (HttpStatus.SC_NOT_FOUND,
 198                                         MsoException.ServiceException,
 199                                         "No communication to catalog DB " + e.getMessage (),
 200                                         ErrorNumbers.SVC_NO_SERVER_RESOURCES,
 201                                         null);
 202                         alarmLogger.sendAlarm ("MsoDatabaseAccessError",
 203                                         MsoAlarmLogger.CRITICAL,
 204                                         Messages.errors.get (ErrorNumbers.NO_COMMUNICATION_TO_CATALOG_DB));
 205                         msoRequest.createRequestRecord (Status.FAILED,action);
 206                         msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.DBAccessError, "Exception while communciate with DB");
 207                         msoLogger.debug ("End of the transaction, the final response is: " + (String) response.getEntity ());
 208                         return response;
 209                 } finally {
 210                         if(db != null) {
 211                             db.close();
 212                         }
 213                 }
 214
 215                 if (recipeLookupResult == null) {
 216                         msoLogger.error (MessageEnum.APIH_DB_ATTRIBUTE_NOT_FOUND, MSO_PROP_APIHANDLER_INFRA, "", "", MsoLogger.ErrorCode.DataError, "No recipe found in DB");
 217                         msoRequest.setStatus (org.openecomp.mso.apihandlerinfra.vnfbeans.RequestStatusType.FAILED);
 218                         Response response = msoRequest.buildServiceErrorResponse (HttpStatus.SC_NOT_FOUND,
 219                                         MsoException.ServiceException,
 220                                         "Recipe does not exist in catalog DB",
 221                                         ErrorNumbers.SVC_GENERAL_SERVICE_ERROR,
 222                                         null);
 223                         msoRequest.createRequestRecord (Status.FAILED, action);
 224                         msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.DataNotFound, "No recipe found in DB");
 225                         msoLogger.debug ("End of the transaction, the final response is: " + (String) response.getEntity ());
 226
 227                         return response;
 228                 }
 229
 230
 231                 String modelInfo = sir.getService().getParameters().getNodeTemplateName();
 232                 String[] arrayOfInfo = modelInfo.split(":");
 233                 String serviceInstanceType = arrayOfInfo[0];
 234
 235
 236
 237                 String serviceId = "";
 238
 239                 RequestClient requestClient = null;
 240                 HttpResponse response = null;
 241
 242                 long subStartTime = System.currentTimeMillis();
 243                 String sirRequestJson = mappingObtainedRequestJSONToServiceInstanceRequest(sir);
 244
 245                 try {
 246                         requestClient = RequestClientFactory.getRequestClient (recipeLookupResult.getOrchestrationURI (), MsoPropertiesUtils.loadMsoProperties ());
 247
 248                         // Capture audit event
 249                         msoLogger.debug ("MSO API Handler Posting call to BPEL engine for url: " + requestClient.getUrl ());
 250
 251                         response = requestClient.post(requestId, false,
 252                                         recipeLookupResult.getRecipeTimeout(),
 253                                         action.name(), serviceId, null, null, null, null, serviceInstanceType,
 254                                         null, null, null, sirRequestJson);
 255
 256                         msoLogger.recordMetricEvent(subStartTime,
 257                                         MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc,
 258                                         "Successfully received response from BPMN engine", "BPMN",
 259                                         recipeLookupResult.getOrchestrationURI(), null);
 260                 } catch (Exception e) {
 261                         msoLogger.recordMetricEvent(subStartTime,
 262                                         MsoLogger.StatusCode.ERROR,
 263                                         MsoLogger.ResponseCode.CommunicationError,
 264                                         "Exception while communicate with BPMN engine", "BPMN",
 265                                         recipeLookupResult.getOrchestrationURI(), null);
 266                         Response resp = msoRequest.buildServiceErrorResponse(
 267                                         HttpStatus.SC_BAD_GATEWAY, MsoException.ServiceException,
 268                                         "Failed calling bpmn " + e.getMessage(),
 269                                         ErrorNumbers.SVC_NO_SERVER_RESOURCES, null);
 270                         alarmLogger.sendAlarm("MsoConfigurationError",
 271                                         MsoAlarmLogger.CRITICAL,
 272                                         Messages.errors.get(ErrorNumbers.NO_COMMUNICATION_TO_BPEL));
 273                         msoLogger.error(MessageEnum.APIH_BPEL_COMMUNICATE_ERROR,
 274                                         MSO_PROP_APIHANDLER_INFRA, "", "",
 275                                         MsoLogger.ErrorCode.AvailabilityError,
 276                                         "Exception while communicate with BPMN engine");
 277                         msoLogger.recordAuditEvent(startTime, MsoLogger.StatusCode.ERROR,
 278                                         MsoLogger.ResponseCode.CommunicationError,
 279                                         "Exception while communicate with BPMN engine");
 280                         msoLogger.debug("End of the transaction, the final response is: "
 281                                         + (String) resp.getEntity());
 282                         return resp;
 283                 }
 284
 285                 if (response == null) {
 286                         Response resp = msoRequest.buildServiceErrorResponse(
 287                                         HttpStatus.SC_BAD_GATEWAY, MsoException.ServiceException,
 288                                         "bpelResponse is null",
 289                                         ErrorNumbers.SVC_NO_SERVER_RESOURCES, null);
 290                         msoLogger.error(MessageEnum.APIH_BPEL_COMMUNICATE_ERROR,
 291                                         MSO_PROP_APIHANDLER_INFRA, "", "",
 292                                         MsoLogger.ErrorCode.BusinessProcesssError,
 293                                         "Null response from BPEL");
 294                         msoLogger.recordAuditEvent(startTime, MsoLogger.StatusCode.ERROR,
 295                                         MsoLogger.ResponseCode.InternalError,
 296                                         "Null response from BPMN");
 297                         msoLogger.debug("End of the transaction, the final response is: "
 298                                         + (String) resp.getEntity());
 299                         return resp;
 300                 }
 301
 302                 ResponseHandler respHandler = new ResponseHandler(response,
 303                                 requestClient.getType());
 304                 int bpelStatus = respHandler.getStatus();
 305
 306                 // BPEL accepted the request, the request is in progress
 307                 if (bpelStatus == HttpStatus.SC_ACCEPTED) {
 308                         String camundaJSONResponseBody = respHandler.getResponseBody();
 309                         msoLogger
 310                         .debug("Received from Camunda: " + camundaJSONResponseBody);
 311                         (RequestsDatabase.getInstance()).updateInfraStatus(requestId,
 312                                         Status.IN_PROGRESS.toString(),
 313                                         Constants.PROGRESS_REQUEST_IN_PROGRESS,
 314                                         Constants.MODIFIED_BY_APIHANDLER);
 315
 316                         msoLogger.recordAuditEvent(startTime,
 317                                         MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc,
 318                                         "BPMN accepted the request, the request is in progress");
 319                         msoLogger.debug("End of the transaction, the final response is: "
 320                                         + (String) camundaJSONResponseBody);
 321                         return Response.status(HttpStatus.SC_ACCEPTED)
 322                                         .entity(camundaJSONResponseBody).build();
 323                 } else {
 324                         List<String> variables = new ArrayList<String>();
 325                         variables.add(bpelStatus + "");
 326                         String camundaJSONResponseBody = respHandler.getResponseBody();
 327                         if (camundaJSONResponseBody != null
 328                                         && !camundaJSONResponseBody.isEmpty()) {
 329                                 Response resp = msoRequest.buildServiceErrorResponse(
 330                                                 bpelStatus, MsoException.ServiceException,
 331                                                 "Request Failed due to BPEL error with HTTP Status= %1 "
 332                                                                 + '\n' + camundaJSONResponseBody,
 333                                                                 ErrorNumbers.SVC_DETAILED_SERVICE_ERROR, variables);
 334                                 msoLogger.error(MessageEnum.APIH_BPEL_RESPONSE_ERROR,
 335                                                 requestClient.getUrl(), "", "",
 336                                                 MsoLogger.ErrorCode.BusinessProcesssError,
 337                                                 "Response from BPEL engine is failed with HTTP Status="
 338                                                                 + bpelStatus);
 339                                 msoLogger.recordAuditEvent(startTime,
 340                                                 MsoLogger.StatusCode.ERROR,
 341                                                 MsoLogger.ResponseCode.InternalError,
 342                                                 "Response from BPMN engine is failed");
 343                                 msoLogger
 344                                 .debug("End of the transaction, the final response is: "
 345                                                 + (String) resp.getEntity());
 346                                 return resp;
 347                         } else {
 348                                 Response resp = msoRequest
 349                                                 .buildServiceErrorResponse(
 350                                                                 bpelStatus,
 351                                                                 MsoException.ServiceException,
 352                                                                 "Request Failed due to BPEL error with HTTP Status= %1",
 353                                                                 ErrorNumbers.SVC_DETAILED_SERVICE_ERROR,
 354                                                                 variables);
 355                                 msoLogger.error(MessageEnum.APIH_BPEL_RESPONSE_ERROR,
 356                                                 requestClient.getUrl(), "", "",
 357                                                 MsoLogger.ErrorCode.BusinessProcesssError,
 358                                                 "Response from BPEL engine is empty");
 359                                 msoLogger.recordAuditEvent(startTime,
 360                                                 MsoLogger.StatusCode.ERROR,
 361                                                 MsoLogger.ResponseCode.InternalError,
 362                                                 "Response from BPEL engine is empty");
 363                                 msoLogger
 364                                 .debug("End of the transaction, the final response is: "
 365                                                 + (String) resp.getEntity());
 366                                 return resp;
 367                         }
 368                 }
 369         }
 370
 371         private RecipeLookupResult getServiceInstanceOrchestrationURI(
 372                         CatalogDatabase db, E2EServiceInstanceRequest sir, Action action) {
 373
 374                 RecipeLookupResult recipeLookupResult = null;
 375
 376                 recipeLookupResult = getServiceURI(db, sir, action);
 377
 378                 if (recipeLookupResult != null) {
 379                         msoLogger.debug ("Orchestration URI is: " + recipeLookupResult.getOrchestrationURI() + ", recipe Timeout is: " + Integer.toString(recipeLookupResult.getRecipeTimeout ()));
 380                 }
 381                 else {
 382                         msoLogger.debug("No matching recipe record found");
 383                 }
 384                 return recipeLookupResult;
 385         }
 386
 387         private RecipeLookupResult getServiceURI(CatalogDatabase db,
 388                         E2EServiceInstanceRequest sir, Action action) {
 389
 390                 String defaultServiceModelName = "UUI_DEFAULT";
 391
 392                 Service serviceRecord = null;
 393                 ServiceRecipe recipe = null;
 394
 395                 serviceRecord = db.getServiceByModelName(defaultServiceModelName);
 396                 recipe = db.getServiceRecipeByModelUUID(serviceRecord.getModelUUID(), action.name());
 397
 398                 if (recipe == null) {
 399                         return null;
 400                 }
 401                 return new RecipeLookupResult(recipe.getOrchestrationUri(),
 402                                 recipe.getRecipeTimeout());
 403
 404         }
 405
 406         private String mappingObtainedRequestJSONToServiceInstanceRequest(E2EServiceInstanceRequest e2eSir){
 407
 408                 ServiceInstancesRequest sir = new ServiceInstancesRequest();
 409
 410                 String returnString = null;
 411                 RequestDetails requestDetails = new RequestDetails();
 412                 ModelInfo modelInfo = new ModelInfo();
 413
 414                 //ModelInvariantId
 415                 modelInfo.setModelInvariantId(e2eSir.getService().getServiceDefId());
 416
 417                 //modelNameVersionId
 418                 modelInfo.setModelNameVersionId(e2eSir.getService().getTemplateId());
 419
 420                 String modelInfoValue = e2eSir.getService().getParameters().getNodeTemplateName();
 421                 String[] arrayOfInfo = modelInfoValue.split(":");
 422                 String modelName = arrayOfInfo[0];
 423                 String modelVersion = arrayOfInfo[1];
 424
 425                 //modelName
 426                 modelInfo.setModelName(modelName);
 427
 428                 //modelVersion
 429                 modelInfo.setModelVersion(modelVersion);
 430
 431                 //modelType
 432                 //if(ModelType.service.equals(e2eSir.getService().getParameters().getNodeType())){
 433                         modelInfo.setModelType(ModelType.service);
 434                 //}
 435
 436                 //setting modelInfo to requestDetails
 437                 requestDetails.setModelInfo(modelInfo);
 438
 439                 SubscriberInfo subscriberInfo = new SubscriberInfo();
 440
 441                 //globalsubscriberId
 442                 subscriberInfo.setGlobalSubscriberId(e2eSir.getService().getParameters().getGlobalSubscriberId());
 443
 444                 //subscriberName
 445                 subscriberInfo.setSubscriberName(e2eSir.getService().getParameters().getSubscriberName());
 446
 447                 //setting subscriberInfo to requestDetails
 448                 requestDetails.setSubscriberInfo(subscriberInfo);
 449
 450                 RequestInfo requestInfo = new RequestInfo();
 451
 452                 //instanceName
 453                 requestInfo.setInstanceName(e2eSir.getService().getName());
 454
 455                 //source
 456                 requestInfo.setSource("UUI");
 457
 458                 //suppressRollback
 459                 requestInfo.setSuppressRollback(true);
 460
 461                 //setting requestInfo to requestDetails
 462                 requestDetails.setRequestInfo(requestInfo);
 463
 464                 RequestParameters requestParameters = new RequestParameters();
 465
 466                 //subscriptionServiceType
 467                 requestParameters.setSubscriptionServiceType("MOG");
 468
 469                 //Userparams
 470                 List<E2EUserParam> userParams;
 471                 userParams = e2eSir.getService().getParameters().getRequestParameters().getUserParams();
 472                 List<Map<String, String>> userParamList = new ArrayList<>();
 473                 Map<String,String> userParamMap= new HashMap<>();
 474                 for(E2EUserParam userp: userParams){
 475                         userParamMap.put(userp.getName(), userp.getValue());
 476                         userParamList.add(userParamMap);
 477                 }
 478
 479                 requestParameters.setUserParams(userParamList);
 480
 481                 //setting requestParameters to requestDetails
 482                 requestDetails.setRequestParameters(requestParameters);
 483
 484                 sir.setRequestDetails(requestDetails);
 485
 486                 //converting to string
 487                 ObjectMapper mapper = new ObjectMapper();
 488                 try {
 489                         returnString = mapper.writeValueAsString(sir);
 490                 } catch (IOException e) {
 491                         msoLogger.debug("Exception while converting ServiceInstancesRequest object to string", e);
 492                 }
 493
 494                 return returnString;
 495         }
 496 }