mso-api-handlers/mso-api-handler-infra/src/main/java/org/openecomp/mso/apihandlerinfra/E2EServiceInstances.java

   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                 Response response = E2EserviceInstances(request, Action.createInstance, null, version);
  91
  92                 return response;
  93         }
  94
  95         /**
  96      *DELETE Requests for E2E Service delete Instance on a specified version and serviceId
  97      */
  98
  99         @DELETE
 100         @Path("/{version:[vV][3-5]}/{serviceId}")
 101         @Consumes(MediaType.APPLICATION_JSON)
 102         @Produces(MediaType.APPLICATION_JSON)
 103         @ApiOperation(value="Delete E2E Service Instance on a specified version and serviceId",response=Response.class)
 104         public Response deleteE2EServiceInstance(String request, @PathParam("version") String version, @PathParam("serviceId") String serviceId) {
 105
 106                 instanceIdMap.put("serviceId", serviceId);
 107                 Response response = E2EserviceInstances(request, Action.deleteInstance, null, version);
 108
 109                 return response;
 110         }
 111
 112         private Response E2EserviceInstances(String requestJSON, Action action,
 113                         HashMap<String, String> instanceIdMap, String version) {
 114
 115                 String requestId = UUIDChecker.generateUUID(msoLogger);
 116                 long startTime = System.currentTimeMillis();
 117                 msoLogger.debug("requestId is: " + requestId);
 118                 E2EServiceInstanceRequest sir = null;
 119
 120                 MsoRequest msoRequest = new MsoRequest(requestId);
 121                 ObjectMapper mapper = new ObjectMapper();
 122                 try {
 123                         sir = mapper
 124                                         .readValue(requestJSON, E2EServiceInstanceRequest.class);
 125
 126                 } catch (Exception e) {
 127
 128                         msoLogger.debug("Mapping of request to JSON object failed : ", e);
 129                         Response response = msoRequest.buildServiceErrorResponse(
 130                                         HttpStatus.SC_BAD_REQUEST,
 131                                         MsoException.ServiceException,
 132                                         "Mapping of request to JSON object failed.  "
 133                                                         + e.getMessage(), ErrorNumbers.SVC_BAD_PARAMETER,
 134                                                         null);
 135                         msoLogger.error(MessageEnum.APIH_REQUEST_VALIDATION_ERROR,
 136                                         MSO_PROP_APIHANDLER_INFRA, "", "",
 137                                         MsoLogger.ErrorCode.SchemaError, requestJSON, e);
 138                         msoLogger.recordAuditEvent(startTime, MsoLogger.StatusCode.ERROR,
 139                                         MsoLogger.ResponseCode.SchemaError,
 140                                         "Mapping of request to JSON object failed");
 141                         msoLogger.debug("End of the transaction, the final response is: "
 142                                         + (String) response.getEntity());
 143                         return response;
 144                 }
 145
 146                 InfraActiveRequests dup = null;
 147                 String instanceName = sir.getService().getName();
 148                 String requestScope = sir.getService().getParameters().getNodeType();
 149
 150                 try {
 151                         if(!(instanceName==null && requestScope.equals("service") && (action == Action.createInstance || action == Action.activateInstance))){
 152                                 dup = (RequestsDatabase.getInstance()).checkInstanceNameDuplicate (instanceIdMap, instanceName, requestScope);
 153                         }
 154                 } catch (Exception e) {
 155                         msoLogger.error (MessageEnum.APIH_DUPLICATE_CHECK_EXC, MSO_PROP_APIHANDLER_INFRA, "", "", MsoLogger.ErrorCode.DataError, "Error during duplicate check ", e);
 156
 157                         Response response = msoRequest.buildServiceErrorResponse(HttpStatus.SC_INTERNAL_SERVER_ERROR, MsoException.ServiceException,
 158                                         e.getMessage(),
 159                                         ErrorNumbers.SVC_DETAILED_SERVICE_ERROR,
 160                                         null) ;
 161
 162
 163                         msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.DBAccessError, "Error during duplicate check");
 164                         msoLogger.debug ("End of the transaction, the final response is: " + (String) response.getEntity ());
 165                         return response;
 166                 }
 167
 168                 if (dup != null) {
 169                         // Found the duplicate record. Return the appropriate error.
 170                         String instance = null;
 171                         if(instanceName != null){
 172                                 instance = instanceName;
 173                         }else{
 174                                 instance = instanceIdMap.get(requestScope + "InstanceId");
 175                         }
 176                         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.";
 177
 178                         Response response = msoRequest.buildServiceErrorResponse(HttpStatus.SC_CONFLICT, MsoException.ServiceException,
 179                                         dupMessage,
 180                                         ErrorNumbers.SVC_DETAILED_SERVICE_ERROR,
 181                                         null) ;
 182
 183
 184                         msoLogger.warn (MessageEnum.APIH_DUPLICATE_FOUND, dupMessage, "", "", MsoLogger.ErrorCode.SchemaError, "Duplicate request - Subscriber already has a request for this service");
 185                         msoRequest.createRequestRecord (Status.FAILED, action);
 186                         msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.Conflict, dupMessage);
 187                         msoLogger.debug ("End of the transaction, the final response is: " + (String) response.getEntity ());
 188                         return response;
 189                 }
 190
 191                 CatalogDatabase db = null;
 192                 RecipeLookupResult recipeLookupResult = null;
 193                 try {
 194                         db = CatalogDatabase.getInstance();
 195                         recipeLookupResult = getServiceInstanceOrchestrationURI(db, sir, action);
 196                 } catch (Exception e) {
 197                         msoLogger.error (MessageEnum.APIH_DB_ACCESS_EXC, MSO_PROP_APIHANDLER_INFRA, "", "", MsoLogger.ErrorCode.AvailabilityError, "Exception while communciate with Catalog DB", e);
 198                         msoRequest.setStatus (org.openecomp.mso.apihandlerinfra.vnfbeans.RequestStatusType.FAILED);
 199                         Response response = msoRequest.buildServiceErrorResponse (HttpStatus.SC_NOT_FOUND,
 200                                         MsoException.ServiceException,
 201                                         "No communication to catalog DB " + e.getMessage (),
 202                                         ErrorNumbers.SVC_NO_SERVER_RESOURCES,
 203                                         null);
 204                         alarmLogger.sendAlarm ("MsoDatabaseAccessError",
 205                                         MsoAlarmLogger.CRITICAL,
 206                                         Messages.errors.get (ErrorNumbers.NO_COMMUNICATION_TO_CATALOG_DB));
 207                         msoRequest.createRequestRecord (Status.FAILED,action);
 208                         msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.DBAccessError, "Exception while communciate with DB");
 209                         msoLogger.debug ("End of the transaction, the final response is: " + (String) response.getEntity ());
 210                         return response;
 211                 } finally {
 212                         if(db != null) {
 213                             db.close();
 214                         }
 215                 }
 216
 217                 if (recipeLookupResult == null) {
 218                         msoLogger.error (MessageEnum.APIH_DB_ATTRIBUTE_NOT_FOUND, MSO_PROP_APIHANDLER_INFRA, "", "", MsoLogger.ErrorCode.DataError, "No recipe found in DB");
 219                         msoRequest.setStatus (org.openecomp.mso.apihandlerinfra.vnfbeans.RequestStatusType.FAILED);
 220                         Response response = msoRequest.buildServiceErrorResponse (HttpStatus.SC_NOT_FOUND,
 221                                         MsoException.ServiceException,
 222                                         "Recipe does not exist in catalog DB",
 223                                         ErrorNumbers.SVC_GENERAL_SERVICE_ERROR,
 224                                         null);
 225                         msoRequest.createRequestRecord (Status.FAILED, action);
 226                         msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.DataNotFound, "No recipe found in DB");
 227                         msoLogger.debug ("End of the transaction, the final response is: " + (String) response.getEntity ());
 228
 229                         return response;
 230                 }
 231
 232
 233                 String modelInfo = sir.getService().getParameters().getNodeTemplateName();
 234                 String[] arrayOfInfo = modelInfo.split(":");
 235                 String serviceInstanceType = arrayOfInfo[0];
 236
 237
 238
 239                 String serviceId = "";
 240
 241                 RequestClient requestClient = null;
 242                 HttpResponse response = null;
 243
 244                 long subStartTime = System.currentTimeMillis();
 245                 String sirRequestJson = mappingObtainedRequestJSONToServiceInstanceRequest(sir);
 246
 247                 try {
 248                         requestClient = RequestClientFactory.getRequestClient (recipeLookupResult.getOrchestrationURI (), MsoPropertiesUtils.loadMsoProperties ());
 249
 250                         // Capture audit event
 251                         msoLogger.debug ("MSO API Handler Posting call to BPEL engine for url: " + requestClient.getUrl ());
 252
 253                         response = requestClient.post(requestId, false,
 254                                         recipeLookupResult.getRecipeTimeout(),
 255                                         action.name(), serviceId, null, null, null, null, serviceInstanceType,
 256                                         null, null, null, sirRequestJson);
 257
 258                         msoLogger.recordMetricEvent(subStartTime,
 259                                         MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc,
 260                                         "Successfully received response from BPMN engine", "BPMN",
 261                                         recipeLookupResult.getOrchestrationURI(), null);
 262                 } catch (Exception e) {
 263                         msoLogger.recordMetricEvent(subStartTime,
 264                                         MsoLogger.StatusCode.ERROR,
 265                                         MsoLogger.ResponseCode.CommunicationError,
 266                                         "Exception while communicate with BPMN engine", "BPMN",
 267                                         recipeLookupResult.getOrchestrationURI(), null);
 268                         Response resp = msoRequest.buildServiceErrorResponse(
 269                                         HttpStatus.SC_BAD_GATEWAY, MsoException.ServiceException,
 270                                         "Failed calling bpmn " + e.getMessage(),
 271                                         ErrorNumbers.SVC_NO_SERVER_RESOURCES, null);
 272                         alarmLogger.sendAlarm("MsoConfigurationError",
 273                                         MsoAlarmLogger.CRITICAL,
 274                                         Messages.errors.get(ErrorNumbers.NO_COMMUNICATION_TO_BPEL));
 275                         msoLogger.error(MessageEnum.APIH_BPEL_COMMUNICATE_ERROR,
 276                                         MSO_PROP_APIHANDLER_INFRA, "", "",
 277                                         MsoLogger.ErrorCode.AvailabilityError,
 278                                         "Exception while communicate with BPMN engine");
 279                         msoLogger.recordAuditEvent(startTime, MsoLogger.StatusCode.ERROR,
 280                                         MsoLogger.ResponseCode.CommunicationError,
 281                                         "Exception while communicate with BPMN engine");
 282                         msoLogger.debug("End of the transaction, the final response is: "
 283                                         + (String) resp.getEntity());
 284                         return resp;
 285                 }
 286
 287                 if (response == null) {
 288                         Response resp = msoRequest.buildServiceErrorResponse(
 289                                         HttpStatus.SC_BAD_GATEWAY, MsoException.ServiceException,
 290                                         "bpelResponse is null",
 291                                         ErrorNumbers.SVC_NO_SERVER_RESOURCES, null);
 292                         msoLogger.error(MessageEnum.APIH_BPEL_COMMUNICATE_ERROR,
 293                                         MSO_PROP_APIHANDLER_INFRA, "", "",
 294                                         MsoLogger.ErrorCode.BusinessProcesssError,
 295                                         "Null response from BPEL");
 296                         msoLogger.recordAuditEvent(startTime, MsoLogger.StatusCode.ERROR,
 297                                         MsoLogger.ResponseCode.InternalError,
 298                                         "Null response from BPMN");
 299                         msoLogger.debug("End of the transaction, the final response is: "
 300                                         + (String) resp.getEntity());
 301                         return resp;
 302                 }
 303
 304                 ResponseHandler respHandler = new ResponseHandler(response,
 305                                 requestClient.getType());
 306                 int bpelStatus = respHandler.getStatus();
 307
 308                 // BPEL accepted the request, the request is in progress
 309                 if (bpelStatus == HttpStatus.SC_ACCEPTED) {
 310                         String camundaJSONResponseBody = respHandler.getResponseBody();
 311                         msoLogger
 312                         .debug("Received from Camunda: " + camundaJSONResponseBody);
 313                         (RequestsDatabase.getInstance()).updateInfraStatus(requestId,
 314                                         Status.IN_PROGRESS.toString(),
 315                                         Constants.PROGRESS_REQUEST_IN_PROGRESS,
 316                                         Constants.MODIFIED_BY_APIHANDLER);
 317
 318                         msoLogger.recordAuditEvent(startTime,
 319                                         MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc,
 320                                         "BPMN accepted the request, the request is in progress");
 321                         msoLogger.debug("End of the transaction, the final response is: "
 322                                         + (String) camundaJSONResponseBody);
 323                         return Response.status(HttpStatus.SC_ACCEPTED)
 324                                         .entity(camundaJSONResponseBody).build();
 325                 } else {
 326                         List<String> variables = new ArrayList<String>();
 327                         variables.add(bpelStatus + "");
 328                         String camundaJSONResponseBody = respHandler.getResponseBody();
 329                         if (camundaJSONResponseBody != null
 330                                         && !camundaJSONResponseBody.isEmpty()) {
 331                                 Response resp = msoRequest.buildServiceErrorResponse(
 332                                                 bpelStatus, MsoException.ServiceException,
 333                                                 "Request Failed due to BPEL error with HTTP Status= %1 "
 334                                                                 + '\n' + camundaJSONResponseBody,
 335                                                                 ErrorNumbers.SVC_DETAILED_SERVICE_ERROR, variables);
 336                                 msoLogger.error(MessageEnum.APIH_BPEL_RESPONSE_ERROR,
 337                                                 requestClient.getUrl(), "", "",
 338                                                 MsoLogger.ErrorCode.BusinessProcesssError,
 339                                                 "Response from BPEL engine is failed with HTTP Status="
 340                                                                 + bpelStatus);
 341                                 msoLogger.recordAuditEvent(startTime,
 342                                                 MsoLogger.StatusCode.ERROR,
 343                                                 MsoLogger.ResponseCode.InternalError,
 344                                                 "Response from BPMN engine is failed");
 345                                 msoLogger
 346                                 .debug("End of the transaction, the final response is: "
 347                                                 + (String) resp.getEntity());
 348                                 return resp;
 349                         } else {
 350                                 Response resp = msoRequest
 351                                                 .buildServiceErrorResponse(
 352                                                                 bpelStatus,
 353                                                                 MsoException.ServiceException,
 354                                                                 "Request Failed due to BPEL error with HTTP Status= %1",
 355                                                                 ErrorNumbers.SVC_DETAILED_SERVICE_ERROR,
 356                                                                 variables);
 357                                 msoLogger.error(MessageEnum.APIH_BPEL_RESPONSE_ERROR,
 358                                                 requestClient.getUrl(), "", "",
 359                                                 MsoLogger.ErrorCode.BusinessProcesssError,
 360                                                 "Response from BPEL engine is empty");
 361                                 msoLogger.recordAuditEvent(startTime,
 362                                                 MsoLogger.StatusCode.ERROR,
 363                                                 MsoLogger.ResponseCode.InternalError,
 364                                                 "Response from BPEL engine is empty");
 365                                 msoLogger
 366                                 .debug("End of the transaction, the final response is: "
 367                                                 + (String) resp.getEntity());
 368                                 return resp;
 369                         }
 370                 }
 371         }
 372
 373         private RecipeLookupResult getServiceInstanceOrchestrationURI(
 374                         CatalogDatabase db, E2EServiceInstanceRequest sir, Action action) {
 375
 376                 RecipeLookupResult recipeLookupResult = null;
 377
 378                 recipeLookupResult = getServiceURI(db, sir, action);
 379
 380                 if (recipeLookupResult != null) {
 381                         msoLogger.debug ("Orchestration URI is: " + recipeLookupResult.getOrchestrationURI() + ", recipe Timeout is: " + Integer.toString(recipeLookupResult.getRecipeTimeout ()));
 382                 }
 383                 else {
 384                         msoLogger.debug("No matching recipe record found");
 385                 }
 386                 return recipeLookupResult;
 387         }
 388
 389         private RecipeLookupResult getServiceURI(CatalogDatabase db,
 390                         E2EServiceInstanceRequest sir, Action action) {
 391
 392                 String defaultServiceModelName = "UUI_DEFAULT";
 393
 394                 Service serviceRecord = null;
 395                 ServiceRecipe recipe = null;
 396
 397                 serviceRecord = db.getServiceByModelName(defaultServiceModelName);
 398                 recipe = db.getServiceRecipeByModelUUID(serviceRecord.getModelUUID(), action.name());
 399
 400                 if (recipe == null) {
 401                         return null;
 402                 }
 403                 return new RecipeLookupResult(recipe.getOrchestrationUri(),
 404                                 recipe.getRecipeTimeout());
 405
 406         }
 407
 408         private String mappingObtainedRequestJSONToServiceInstanceRequest(E2EServiceInstanceRequest e2eSir){
 409
 410                 ServiceInstancesRequest sir = new ServiceInstancesRequest();
 411
 412                 String returnString = null;
 413                 RequestDetails requestDetails = new RequestDetails();
 414                 ModelInfo modelInfo = new ModelInfo();
 415
 416                 //ModelInvariantId
 417                 modelInfo.setModelInvariantId(e2eSir.getService().getServiceDefId());
 418
 419                 //modelNameVersionId
 420                 modelInfo.setModelNameVersionId(e2eSir.getService().getTemplateId());
 421
 422                 String modelInfoValue = e2eSir.getService().getParameters().getNodeTemplateName();
 423                 String[] arrayOfInfo = modelInfoValue.split(":");
 424                 String modelName = arrayOfInfo[0];
 425                 String modelVersion = arrayOfInfo[1];
 426
 427                 //modelName
 428                 modelInfo.setModelName(modelName);
 429
 430                 //modelVersion
 431                 modelInfo.setModelVersion(modelVersion);
 432
 433                 //modelType
 434                 //if(ModelType.service.equals(e2eSir.getService().getParameters().getNodeType())){
 435                         modelInfo.setModelType(ModelType.service);
 436                 //}
 437
 438                 //setting modelInfo to requestDetails
 439                 requestDetails.setModelInfo(modelInfo);
 440
 441                 SubscriberInfo subscriberInfo = new SubscriberInfo();
 442
 443                 //globalsubscriberId
 444                 subscriberInfo.setGlobalSubscriberId(e2eSir.getService().getParameters().getGlobalSubscriberId());
 445
 446                 //subscriberName
 447                 subscriberInfo.setSubscriberName(e2eSir.getService().getParameters().getSubscriberName());
 448
 449                 //setting subscriberInfo to requestDetails
 450                 requestDetails.setSubscriberInfo(subscriberInfo);
 451
 452                 RequestInfo requestInfo = new RequestInfo();
 453
 454                 //instanceName
 455                 requestInfo.setInstanceName(e2eSir.getService().getName());
 456
 457                 //source
 458                 requestInfo.setSource("UUI");
 459
 460                 //suppressRollback
 461                 requestInfo.setSuppressRollback(true);
 462
 463                 //setting requestInfo to requestDetails
 464                 requestDetails.setRequestInfo(requestInfo);
 465
 466                 RequestParameters requestParameters = new RequestParameters();
 467
 468                 //subscriptionServiceType
 469                 requestParameters.setSubscriptionServiceType("MOG");
 470
 471                 //Userparams
 472                 List<E2EUserParam> userParams = new ArrayList<>();
 473                 userParams = e2eSir.getService().getParameters().getRequestParameters().getUserParams();
 474                 List<Map<String, String>> userParamList = new ArrayList<Map<String,String>>();
 475                 Map<String,String> userParamMap= new HashMap<String, String>();
 476                 for(E2EUserParam userp: userParams){
 477                         userParamMap.put(userp.getName(), userp.getValue());
 478                         userParamList.add(userParamMap);
 479                 }
 480
 481                 requestParameters.setUserParams(userParamList);
 482
 483                 //setting requestParameters to requestDetails
 484                 requestDetails.setRequestParameters(requestParameters);
 485
 486                 sir.setRequestDetails(requestDetails);
 487
 488                 //converting to string
 489                 ObjectMapper mapper = new ObjectMapper();
 490                 try {
 491                         returnString = mapper.writeValueAsString(sir);
 492                 } catch (IOException e) {
 493                         msoLogger.debug("Exception while converting ServiceInstancesRequest object to string", e);
 494                 }
 495
 496                 return returnString;
 497         }
 498 }