catalog-be/src/main/java/org/openecomp/sdc/be/externalapi/servlet/AssetsDataServlet.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. 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.sdc.be.externalapi.servlet;
  22
  23 import java.io.ByteArrayInputStream;
  24 import java.io.InputStream;
  25 import java.util.EnumMap;
  26 import java.util.HashMap;
  27 import java.util.List;
  28 import java.util.Map;
  29
  30 import javax.inject.Singleton;
  31 import javax.servlet.ServletContext;
  32 import javax.servlet.http.HttpServletRequest;
  33 import javax.ws.rs.GET;
  34 import javax.ws.rs.HeaderParam;
  35 import javax.ws.rs.Path;
  36 import javax.ws.rs.PathParam;
  37 import javax.ws.rs.Produces;
  38 import javax.ws.rs.QueryParam;
  39 import javax.ws.rs.core.Context;
  40 import javax.ws.rs.core.MediaType;
  41 import javax.ws.rs.core.Response;
  42
  43 import org.apache.commons.lang3.tuple.ImmutablePair;
  44 import org.openecomp.sdc.be.components.impl.ComponentBusinessLogic;
  45 import org.openecomp.sdc.be.components.impl.ElementBusinessLogic;
  46 import org.openecomp.sdc.be.config.BeEcompErrorManager;
  47 import org.openecomp.sdc.be.dao.api.ActionStatus;
  48 import org.openecomp.sdc.be.datatypes.enums.ComponentTypeEnum;
  49 import org.openecomp.sdc.be.datatypes.enums.FilterKeyEnum;
  50 import org.openecomp.sdc.be.datatypes.enums.ResourceTypeEnum;
  51 import org.openecomp.sdc.be.ecomp.converters.AssetMetadataConverter;
  52 import org.openecomp.sdc.be.externalapi.servlet.representation.AssetMetadata;
  53 import org.openecomp.sdc.be.model.Component;
  54 import org.openecomp.sdc.be.resources.data.auditing.AuditingActionEnum;
  55 import org.openecomp.sdc.be.servlets.AbstractValidationsServlet;
  56 import org.openecomp.sdc.be.servlets.RepresentationUtils;
  57 import org.openecomp.sdc.common.api.Constants;
  58 import org.openecomp.sdc.common.datastructure.AuditingFieldsKeysEnum;
  59 import org.openecomp.sdc.common.util.GeneralUtility;
  60 import org.openecomp.sdc.exception.ResponseFormat;
  61 import org.slf4j.Logger;
  62 import org.slf4j.LoggerFactory;
  63
  64 import com.jcabi.aspects.Loggable;
  65
  66 import fj.data.Either;
  67 import io.swagger.annotations.Api;
  68 import io.swagger.annotations.ApiOperation;
  69 import io.swagger.annotations.ApiParam;
  70 import io.swagger.annotations.ApiResponse;
  71 import io.swagger.annotations.ApiResponses;
  72
  73 /**
  74  * This Servlet serves external users for retrieving component metadata.
  75  *
  76  * @author tgitelman
  77  *
  78  */
  79
  80 @Loggable(prepend = true, value = Loggable.DEBUG, trim = false)
  81 @Path("/v1/catalog")
  82 @Api(value = "Asset Metadata External Servlet", description = "This Servlet serves external users for retrieving component metadata.")
  83 @Singleton
  84 public class AssetsDataServlet extends AbstractValidationsServlet {
  85
  86         @Context
  87         private HttpServletRequest request;
  88
  89         private static Logger log = LoggerFactory.getLogger(AssetsDataServlet.class.getName());
  90
  91         /**
  92          *
  93          * @param requestId
  94          * @param instanceIdHeader
  95          * @param accept
  96          * @param authorization
  97          * @param assetType
  98          * @param category
  99          * @param subCategory
 100          * @param distributionStatus
 101          * @param resourceType
 102          * @return
 103          */
 104         @GET
 105         @Path("/{assetType}")
 106         @Produces(MediaType.APPLICATION_JSON)
 107         @ApiOperation(value = "Fetch list of assets", httpMethod = "GET", notes = "Returns list of assets")
 108         @ApiResponses(value = {
 109                         @ApiResponse(code = 200, message = "ECOMP component is authenticated and list of Catalog Assets Metadata is returned", response = AssetMetadata.class, responseContainer="List"),
 110                         @ApiResponse(code = 400, message = "Missing  'X-ECOMP-InstanceID'  HTTP header - POL5001"),
 111                         @ApiResponse(code = 401, message = "ECOMP component  should authenticate itself  and  to  re-send  again  HTTP  request  with its Basic Authentication credentials - POL5002"),
 112                         @ApiResponse(code = 403, message = "ECOMP component is not authorized - POL5003"),
 113                         @ApiResponse(code = 405, message = "Method  Not Allowed  :  Invalid HTTP method type used ( PUT,DELETE,POST will be rejected) - POL4050"),
 114                         @ApiResponse(code = 500, message = "The GET request failed either due to internal SDC problem. ECOMP Component should continue the attempts to get the needed information - POL5000")})
 115         public Response getAssetListExternal(
 116                         @ApiParam(value = "X-ECOMP-RequestID header", required = false)@HeaderParam(value = Constants.X_ECOMP_REQUEST_ID_HEADER) String requestId,
 117                         @ApiParam(value = "X-ECOMP-InstanceID header", required = true)@HeaderParam(value = Constants.X_ECOMP_INSTANCE_ID_HEADER) final String instanceIdHeader,
 118                         @ApiParam(value = "Determines the format of the body of the response", required = false)@HeaderParam(value = Constants.ACCEPT_HEADER) String accept,
 119                         @ApiParam(value = "The username and password", required = true)@HeaderParam(value = Constants.AUTHORIZATION_HEADER) String authorization,
 120                         @ApiParam(value = "The requested asset type", required = true, allowableValues = "resources, services")@PathParam("assetType") final String assetType,
 121                         @ApiParam(value = "The filter key (resourceType only for resources)", required = false)@QueryParam("category") String category,
 122                         @ApiParam(value = "The filter key (resourceType only for resources)", required = false)@QueryParam("subCategory") String subCategory,
 123                         @ApiParam(value = "The filter key (resourceType only for resources)", required = false)@QueryParam("distributionStatus") String distributionStatus,
 124                         @ApiParam(value = "The filter key (resourceType only for resources)", required = false)@QueryParam("resourceType") String resourceType) {
 125
 126                 Response response = null;
 127                 ResponseFormat responseFormat = null;
 128                 String query = request.getQueryString();
 129                 String requestURI = request.getRequestURI().endsWith("/")?
 130                                 removeDuplicateSlashSeparator(request.getRequestURI()): request.getRequestURI();
 131                 String url = request.getMethod() + " " + requestURI;
 132                 log.debug("Start handle request of {}", url);
 133
 134                 AuditingActionEnum auditingActionEnum = query == null ? AuditingActionEnum.GET_ASSET_LIST : AuditingActionEnum.GET_FILTERED_ASSET_LIST;
 135
 136                 EnumMap<AuditingFieldsKeysEnum, Object> additionalParam = new EnumMap<AuditingFieldsKeysEnum, Object>(AuditingFieldsKeysEnum.class);
 137                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_DISTRIBUTION_CONSUMER_ID, instanceIdHeader);
 138                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_DISTRIBUTION_RESOURCE_URL, query == null ? requestURI : requestURI + "?" + query);
 139
 140                 // Mandatory
 141                 if (instanceIdHeader == null || instanceIdHeader.isEmpty()) {
 142                         log.debug("getAssetList: Missing X-ECOMP-InstanceID header");
 143                         responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.MISSING_X_ECOMP_INSTANCE_ID);
 144                         getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 145                         return buildErrorResponse(responseFormat);
 146                 }
 147
 148                 try {
 149                         ServletContext context = request.getSession().getServletContext();
 150                         ElementBusinessLogic elementLogic = getElementBL(context);
 151
 152                         AssetMetadataConverter assetMetadataUtils = getAssetUtils(context);
 153                         Map<FilterKeyEnum, String> filters = new EnumMap<>(FilterKeyEnum.class);
 154
 155                         if (category != null) {
 156                                 filters.put(FilterKeyEnum.CATEGORY, category);
 157                         }
 158                         if (subCategory != null) {
 159                                 filters.put(FilterKeyEnum.SUB_CATEGORY, subCategory);
 160                         }
 161                         if (distributionStatus != null) {
 162                                 filters.put(FilterKeyEnum.DISTRIBUTION_STATUS, distributionStatus);
 163                         }
 164                         if (resourceType != null) {
 165                                 ResourceTypeEnum resourceTypeEnum = ResourceTypeEnum.getTypeIgnoreCase(resourceType);
 166                                 if (resourceTypeEnum == null) {
 167                                         log.debug("getAssetList: Asset Fetching Failed. Invalid resource type was received");
 168                                         responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.INVALID_CONTENT);
 169                                         getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 170                                         return buildErrorResponse(responseFormat);
 171                                 }
 172                                 filters.put(FilterKeyEnum.RESOURCE_TYPE, resourceTypeEnum.name());
 173                         }
 174
 175                         Either<List<? extends Component>, ResponseFormat> assetTypeData = elementLogic.getFilteredCatalogComponents(assetType, filters, query);
 176
 177                         if (assetTypeData.isRight()) {
 178                                 log.debug("getAssetList: Asset Fetching Failed");
 179                                 responseFormat = assetTypeData.right().value();
 180                                 getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 181                                 return buildErrorResponse(responseFormat);
 182                         } else {
 183                                 log.debug("getAssetList: Asset Fetching Success");
 184                                 Either<List<? extends AssetMetadata>, ResponseFormat> resMetadata = assetMetadataUtils.convertToAssetMetadata(assetTypeData.left().value(), requestURI, false);
 185                                 if (resMetadata.isRight()) {
 186                                         log.debug("getAssetList: Asset conversion Failed");
 187                                         responseFormat = resMetadata.right().value();
 188                                         getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 189                                         return buildErrorResponse(responseFormat);
 190                                 }
 191                                 Object result = RepresentationUtils.toRepresentation(resMetadata.left().value());
 192                                 responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.OK);
 193                                 getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 194
 195                                 response = buildOkResponse(responseFormat, result);
 196                                 return response;
 197                         }
 198                 } catch (Exception e) {
 199                         BeEcompErrorManager.getInstance().logBeRestApiGeneralError("Fetch filtered list of assets");
 200                         log.debug("getAssetList: Fetch list of assets failed with exception", e);
 201                         return buildErrorResponse(getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR));
 202                 }
 203         }
 204
 205         /**
 206          *
 207          * @param requestId
 208          * @param instanceIdHeader
 209          * @param accept
 210          * @param authorization
 211          * @param assetType
 212          * @param uuid
 213          * @return
 214          */
 215         @GET
 216         @Path("/{assetType}/{uuid}/metadata")
 217         @Produces(MediaType.APPLICATION_JSON)
 218         @ApiOperation(value = "Detailed metadata of asset by uuid", httpMethod = "GET", notes = "Returns detailed metadata of an asset by uuid")
 219         @ApiResponses(value = {
 220                         @ApiResponse(code = 200, message = "ECOMP component is authenticated and list of Catalog Assets Metadata is returned", response = AssetMetadata.class, responseContainer="List"),
 221                         @ApiResponse(code = 400, message = "Missing  'X-ECOMP-InstanceID'  HTTP header - POL5001"),
 222                         @ApiResponse(code = 401, message = "ECOMP component  should authenticate itself  and  to  re-send  again  HTTP  request  with its Basic Authentication credentials - POL5002"),
 223                         @ApiResponse(code = 403, message = "ECOMP component is not authorized - POL5003"),
 224                         @ApiResponse(code = 404, message = "Error: Requested '%1' (uuid) resource was not found - SVC4063"),
 225                         @ApiResponse(code = 405, message = "Method  Not Allowed  :  Invalid HTTP method type used ( PUT,DELETE,POST will be rejected) - POL4050"),
 226                         @ApiResponse(code = 500, message = "The GET request failed either due to internal SDC problem. ECOMP Component should continue the attempts to get the needed information - POL5000")})
 227         public Response getAssetSpecificMetadataByUuidExternal(
 228                         @ApiParam(value = "X-ECOMP-RequestID header", required = false)@HeaderParam(value = Constants.X_ECOMP_REQUEST_ID_HEADER) String requestId,
 229                         @ApiParam(value = "X-ECOMP-InstanceID header", required = true)@HeaderParam(value = Constants.X_ECOMP_INSTANCE_ID_HEADER) final String instanceIdHeader,
 230                         @ApiParam(value = "Determines the format of the body of the response", required = false)@HeaderParam(value = Constants.ACCEPT_HEADER) String accept,
 231                         @ApiParam(value = "The username and password", required = true)@HeaderParam(value = Constants.AUTHORIZATION_HEADER) String authorization,
 232                         @ApiParam(value = "The requested asset type", required = true, allowableValues = "resources, services")@PathParam("assetType") final String assetType,
 233                         @ApiParam(value = "The requested asset uuid", required = true)@PathParam("uuid") final String uuid) {
 234
 235                 Response response = null;
 236                 ResponseFormat responseFormat = null;
 237                 AuditingActionEnum auditingActionEnum = AuditingActionEnum.GET_ASSET_METADATA;
 238                 String requestURI = request.getRequestURI();
 239                 String url = request.getMethod() + " " + requestURI;
 240                 log.debug("Start handle request of {}", url);
 241
 242                 EnumMap<AuditingFieldsKeysEnum, Object> additionalParam = new EnumMap<>(AuditingFieldsKeysEnum.class);
 243                 ComponentTypeEnum componentType = ComponentTypeEnum.findByParamName(assetType);
 244                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_DISTRIBUTION_CONSUMER_ID, instanceIdHeader);
 245                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_DISTRIBUTION_RESOURCE_URL, requestURI);
 246                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_RESOURCE_TYPE, componentType.getValue());
 247                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_SERVICE_INSTANCE_ID, uuid);
 248
 249                 // Mandatory
 250                 if (instanceIdHeader == null || instanceIdHeader.isEmpty()) {
 251                         log.debug("getAssetList: Missing X-ECOMP-InstanceID header");
 252                         responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.MISSING_X_ECOMP_INSTANCE_ID);
 253                         getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 254                         return buildErrorResponse(responseFormat);
 255                 }
 256
 257                 try {
 258                         ServletContext context = request.getSession().getServletContext();
 259                         ElementBusinessLogic elementLogic = getElementBL(context);
 260                         AssetMetadataConverter assetMetadataUtils = getAssetUtils(context);
 261
 262                         Either<List<? extends Component>, ResponseFormat> assetTypeData = elementLogic.getCatalogComponentsByUuidAndAssetType(assetType, uuid);
 263
 264                         if (assetTypeData.isRight()) {
 265                                 log.debug("getAssetList: Asset Fetching Failed");
 266                                 responseFormat = assetTypeData.right().value();
 267                                 getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 268
 269                                 return buildErrorResponse(responseFormat);
 270                         } else {
 271                                 log.debug("getAssetList: Asset Fetching Success");
 272                                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_RESOURCE_NAME, assetTypeData.left().value().iterator().next().getName());
 273                                 Either<List<? extends AssetMetadata>, ResponseFormat> resMetadata = assetMetadataUtils.convertToAssetMetadata(assetTypeData.left().value(), requestURI, true);
 274                                 if (resMetadata.isRight()) {
 275                                         log.debug("getAssetList: Asset conversion Failed");
 276                                         responseFormat = resMetadata.right().value();
 277                                         getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 278                                         return buildErrorResponse(responseFormat);
 279                                 }
 280                                 Object result = RepresentationUtils.toRepresentation(resMetadata.left().value().iterator().next());
 281                                 responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.OK);
 282                                 getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 283
 284                                 response = buildOkResponse(responseFormat, result);
 285                                 return response;
 286                         }
 287                 } catch (Exception e) {
 288                         BeEcompErrorManager.getInstance().logBeRestApiGeneralError("Fetch filtered list of assets");
 289                         log.debug("getAssetList: Fetch list of assets failed with exception", e);
 290                         return buildErrorResponse(getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR));
 291                 }
 292         }
 293
 294         /**
 295          *
 296          * @param requestId
 297          * @param instanceIdHeader
 298          * @param accept
 299          * @param authorization
 300          * @param assetType
 301          * @param uuid
 302          * @return
 303          */
 304         @GET
 305         @Path("/{assetType}/{uuid}/toscaModel")
 306         @Produces(MediaType.APPLICATION_OCTET_STREAM)
 307         @ApiOperation(value = "Fetch assets CSAR", httpMethod = "GET", notes = "Returns asset csar", response = String.class)
 308         @ApiResponses(value = {
 309                         @ApiResponse(code = 200, message = "ECOMP component is authenticated and list of Catalog Assets Metadata is returned", response = String.class),
 310                         @ApiResponse(code = 400, message = "Missing  'X-ECOMP-InstanceID'  HTTP header - POL5001"),
 311                         @ApiResponse(code = 401, message = "ECOMP component  should authenticate itself  and  to  re-send  again  HTTP  request  with its Basic Authentication credentials - POL5002"),
 312                         @ApiResponse(code = 403, message = "ECOMP component is not authorized - POL5003"),
 313                         @ApiResponse(code = 404, message = "Error: Requested '%1' (uuid) resource was not found - SVC4063"),
 314                         @ApiResponse(code = 405, message = "Method  Not Allowed  :  Invalid HTTP method type used ( PUT,DELETE,POST will be rejected) - POL4050"),
 315                         @ApiResponse(code = 500, message = "The GET request failed either due to internal SDC problem. ECOMP Component should continue the attempts to get the needed information - POL5000")})
 316         public Response getToscaModelExternal(
 317                         @ApiParam(value = "X-ECOMP-RequestID header", required = false)@HeaderParam(value = Constants.X_ECOMP_REQUEST_ID_HEADER) String requestId,
 318                         @ApiParam(value = "X-ECOMP-InstanceID header", required = true)@HeaderParam(value = Constants.X_ECOMP_INSTANCE_ID_HEADER) final String instanceIdHeader,
 319                         @ApiParam(value = "Determines the format of the body of the response", required = false)@HeaderParam(value = Constants.ACCEPT_HEADER) String accept,
 320                         @ApiParam(value = "The username and password", required = true)@HeaderParam(value = Constants.AUTHORIZATION_HEADER) String authorization,
 321                         @ApiParam(value = "The requested asset type", required = true, allowableValues = "resources, services")@PathParam("assetType") final String assetType,
 322                         @ApiParam(value = "The requested asset uuid", required = true)@PathParam("uuid") final String uuid) {
 323
 324                 String url = request.getRequestURI();
 325                 log.debug("Start handle request of {} {}", request.getMethod(), url);
 326                 Response response = null;
 327                 ResponseFormat responseFormat = null;
 328                 ServletContext context = request.getSession().getServletContext();
 329                 ComponentTypeEnum componentType = ComponentTypeEnum.findByParamName(assetType);
 330                 AuditingActionEnum auditingActionEnum = AuditingActionEnum.GET_TOSCA_MODEL;
 331                 EnumMap<AuditingFieldsKeysEnum, Object> additionalParam = new EnumMap<AuditingFieldsKeysEnum, Object>(AuditingFieldsKeysEnum.class);
 332                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_DISTRIBUTION_CONSUMER_ID, instanceIdHeader);
 333                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_DISTRIBUTION_RESOURCE_URL, url);
 334                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_RESOURCE_TYPE, componentType.getValue());
 335                 additionalParam.put(AuditingFieldsKeysEnum.AUDIT_SERVICE_INSTANCE_ID, uuid);
 336
 337                 if (instanceIdHeader == null || instanceIdHeader.isEmpty()) {
 338                         log.debug("getToscaModel: Missing X-ECOMP-InstanceID header");
 339                         responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.MISSING_X_ECOMP_INSTANCE_ID);
 340                         getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 341                         return buildErrorResponse(responseFormat);
 342                 }
 343
 344                 try {
 345                         ComponentBusinessLogic componentBL = getComponentBL(componentType, context);
 346
 347                         Either<ImmutablePair<String, byte[]>, ResponseFormat> csarArtifact = componentBL.getToscaModelByComponentUuid(componentType, uuid, additionalParam);
 348                         if (csarArtifact.isRight()) {
 349                                 responseFormat = csarArtifact.right().value();
 350                                 getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 351                                 response = buildErrorResponse(responseFormat);
 352                         } else {
 353                                 byte[] value = csarArtifact.left().value().getRight();
 354                                 InputStream is = new ByteArrayInputStream(value);
 355                                 String contenetMD5 = GeneralUtility.calculateMD5Base64EncodedByByteArray(value);
 356                                 Map<String, String> headers = new HashMap<>();
 357                                 headers.put(Constants.CONTENT_DISPOSITION_HEADER, getContentDispositionValue(csarArtifact.left().value().getLeft()));
 358                                 headers.put(Constants.MD5_HEADER, contenetMD5);
 359                                 responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.OK);
 360                                 getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 361                                 response = buildOkResponse(responseFormat, is, headers);
 362                         }
 363                         return response;
 364
 365                 } catch (Exception e) {
 366                         BeEcompErrorManager.getInstance().logBeRestApiGeneralError("Get asset tosca model");
 367                         log.debug("falied to get asset tosca model", e);
 368                         responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR);
 369                         response = buildErrorResponse(responseFormat);
 370                         getComponentsUtils().auditExternalGetAsset(responseFormat, auditingActionEnum, additionalParam);
 371                         return response;
 372                 }
 373         }
 374
 375
 376         private String removeDuplicateSlashSeparator(String requestUri) {
 377                 return requestUri.substring(0, requestUri.length()-1);
 378         }
 379
 380
 381 }