openecomp-be/api/openecomp-sdc-rest-webapp/openecomp-sdc-common-rest/src/main/java/org/openecomp/sdcrests/errors/DefaultExceptionMapper.java

   1 /*
   2  * Copyright © 2016-2018 European Support Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.openecomp.sdcrests.errors;
  18
  19 import java.util.ArrayList;
  20 import java.util.List;
  21 import java.util.Map;
  22 import java.util.Set;
  23
  24 import javax.validation.ConstraintViolation;
  25 import javax.validation.ConstraintViolationException;
  26 import javax.validation.Path;
  27 import javax.ws.rs.core.MediaType;
  28 import javax.ws.rs.core.Response;
  29 import javax.ws.rs.ext.ExceptionMapper;
  30
  31 import org.codehaus.jackson.map.JsonMappingException;
  32 import org.hibernate.validator.internal.engine.path.PathImpl;
  33 import org.openecomp.core.utilities.CommonMethods;
  34 import org.openecomp.core.utilities.file.FileUtils;
  35 import org.openecomp.core.utilities.json.JsonUtil;
  36 import org.openecomp.sdc.common.errors.*;
  37 import org.openecomp.sdc.logging.api.Logger;
  38 import org.openecomp.sdc.logging.api.LoggerFactory;
  39
  40 public class DefaultExceptionMapper implements ExceptionMapper<Exception> {
  41
  42     private static final String ERROR_CODES_TO_RESPONSE_STATUS_MAPPING_FILE = "errorCodesToResponseStatusMapping.json";
  43     @SuppressWarnings("unchecked")
  44     private static final Map<String, String> ERROR_CODE_TO_RESPONSE_STATUS = FileUtils.readViaInputStream(
  45             ERROR_CODES_TO_RESPONSE_STATUS_MAPPING_FILE, stream -> JsonUtil.json2Object(stream, Map.class));
  46
  47     private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExceptionMapper.class);
  48
  49     @Override
  50     public Response toResponse(Exception exception) {
  51         Response response;
  52         if (exception instanceof CoreException) {
  53             response = transform(CoreException.class.cast(exception));
  54         } else if (exception instanceof ConstraintViolationException) {
  55             response = transform(ConstraintViolationException.class.cast(exception));
  56
  57         } else if (exception instanceof JsonMappingException) {
  58             response = transform(JsonMappingException.class.cast(exception));
  59
  60         } else {
  61             response = transform(exception);
  62         }
  63
  64         List<Object> contentTypes = new ArrayList<>();
  65         contentTypes.add(MediaType.APPLICATION_JSON);
  66         response.getMetadata().put("Content-Type", contentTypes);
  67         return response;
  68     }
  69
  70     private Response transform(CoreException coreException) {
  71         Response response;
  72         ErrorCode code = coreException.code();
  73         LOGGER.error(code.message(), coreException);
  74
  75         if (coreException.code().category().equals(ErrorCategory.APPLICATION)) {
  76             if (Response.Status.NOT_FOUND.name().equals(ERROR_CODE_TO_RESPONSE_STATUS.get(code.id()))) {
  77                 response = Response.status(Response.Status.NOT_FOUND).entity(toEntity(Response.Status.NOT_FOUND, code))
  78                                    .build();
  79             } else if (Response.Status.BAD_REQUEST.name().equals(ERROR_CODE_TO_RESPONSE_STATUS.get(code.id()))) {
  80                 response =
  81                         Response.status(Response.Status.BAD_REQUEST).entity(toEntity(Response.Status.BAD_REQUEST, code))
  82                                 .build();
  83             } else {
  84                 response = Response.status(Response.Status.EXPECTATION_FAILED)
  85                                    .entity(toEntity(Response.Status.EXPECTATION_FAILED, code)).build();
  86             }
  87         } else {
  88             response = Response.status(Response.Status.INTERNAL_SERVER_ERROR)
  89                                .entity(toEntity(Response.Status.INTERNAL_SERVER_ERROR, code)).build();
  90         }
  91
  92
  93         return response;
  94     }
  95
  96     private Response transform(ConstraintViolationException validationException) {
  97         Set<ConstraintViolation<?>> constraintViolationSet = validationException.getConstraintViolations();
  98         String message;
  99
 100         String fieldName = null;
 101         if (!CommonMethods.isEmpty(constraintViolationSet)) {
 102             // getting the first violation message for the output response.
 103             ConstraintViolation<?> constraintViolation = constraintViolationSet.iterator().next();
 104             message = constraintViolation.getMessage();
 105             fieldName = getFieldName(constraintViolation.getPropertyPath());
 106
 107         } else {
 108             message = validationException.getMessage();
 109         }
 110
 111         ErrorCode validationErrorCode = new ValidationErrorBuilder(message, fieldName).build();
 112
 113         LOGGER.error(validationErrorCode.message(), validationException);
 114         return Response.status(Response.Status.EXPECTATION_FAILED) //error 417
 115                        .entity(toEntity(Response.Status.EXPECTATION_FAILED, validationErrorCode)).build();
 116     }
 117
 118     private Response transform(JsonMappingException jsonMappingException) {
 119         ErrorCode jsonMappingErrorCode = new JsonMappingErrorBuilder().build();
 120         LOGGER.error(jsonMappingErrorCode.message(), jsonMappingException);
 121         return Response.status(Response.Status.EXPECTATION_FAILED) //error 417
 122                        .entity(toEntity(Response.Status.EXPECTATION_FAILED, jsonMappingErrorCode)).build();
 123     }
 124
 125     private Response transform(Exception exception) {
 126         ErrorCode errorCode = new GeneralErrorBuilder().build();
 127         LOGGER.error(errorCode.message(), exception);
 128         return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
 129                        .entity(toEntity(Response.Status.INTERNAL_SERVER_ERROR, errorCode)).build();
 130     }
 131
 132     private String getFieldName(Path propertyPath) {
 133         return ((PathImpl) propertyPath).getLeafNode().toString();
 134     }
 135
 136     private Object toEntity(Response.Status status, ErrorCode code) {
 137         return new ErrorCodeAndMessage(status, code);
 138     }
 139 }