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 package org.openecomp.sdcrests.errors;
  17
  18 import com.fasterxml.jackson.databind.JsonMappingException;
  19 import java.util.ArrayList;
  20 import java.util.List;
  21 import java.util.Map;
  22 import java.util.Set;
  23 import javax.validation.ConstraintViolation;
  24 import javax.validation.ConstraintViolationException;
  25 import javax.validation.Path;
  26 import javax.ws.rs.core.MediaType;
  27 import javax.ws.rs.core.Response;
  28 import javax.ws.rs.ext.ExceptionMapper;
  29 import org.apache.commons.collections4.CollectionUtils;
  30 import org.hibernate.validator.internal.engine.path.PathImpl;
  31 import org.openecomp.core.utilities.file.FileUtils;
  32 import org.openecomp.core.utilities.json.JsonUtil;
  33 import org.openecomp.sdc.common.errors.CoreException;
  34 import org.openecomp.sdc.common.errors.ErrorCategory;
  35 import org.openecomp.sdc.common.errors.ErrorCode;
  36 import org.openecomp.sdc.common.errors.ErrorCodeAndMessage;
  37 import org.openecomp.sdc.common.errors.GeneralErrorBuilder;
  38 import org.openecomp.sdc.common.errors.JsonMappingErrorBuilder;
  39 import org.openecomp.sdc.common.errors.ValidationErrorBuilder;
  40 import org.openecomp.sdc.logging.api.Logger;
  41 import org.openecomp.sdc.logging.api.LoggerFactory;
  42
  43 public class DefaultExceptionMapper implements ExceptionMapper<Exception> {
  44
  45     private static final String ERROR_CODES_TO_RESPONSE_STATUS_MAPPING_FILE = "errorCodesToResponseStatusMapping.json";
  46     @SuppressWarnings("unchecked")
  47     private static final Map<String, String> ERROR_CODE_TO_RESPONSE_STATUS = FileUtils
  48         .readViaInputStream(ERROR_CODES_TO_RESPONSE_STATUS_MAPPING_FILE, stream -> JsonUtil.json2Object(stream, Map.class));
  49     private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExceptionMapper.class);
  50
  51     @Override
  52     public Response toResponse(Exception exception) {
  53         Response response;
  54         if (exception instanceof CoreException) {
  55             response = transform(CoreException.class.cast(exception));
  56         } else if (exception instanceof ConstraintViolationException) {
  57             response = transform(ConstraintViolationException.class.cast(exception));
  58         } else if (exception instanceof JsonMappingException) {
  59             response = transform(JsonMappingException.class.cast(exception));
  60         } else {
  61             response = transform(exception);
  62         }
  63         List<Object> contentTypes = new ArrayList<>();
  64         contentTypes.add(MediaType.APPLICATION_JSON);
  65         response.getMetadata().put("Content-Type", contentTypes);
  66         return response;
  67     }
  68
  69     private Response transform(CoreException coreException) {
  70         Response response;
  71         ErrorCode code = coreException.code();
  72         LOGGER.error(code.message(), coreException);
  73         if (coreException.code().category().equals(ErrorCategory.APPLICATION)) {
  74             if (Response.Status.NOT_FOUND.name().equals(ERROR_CODE_TO_RESPONSE_STATUS.get(code.id()))) {
  75                 response = Response.status(Response.Status.NOT_FOUND).entity(toEntity(Response.Status.NOT_FOUND, code)).build();
  76             } else if (Response.Status.BAD_REQUEST.name().equals(ERROR_CODE_TO_RESPONSE_STATUS.get(code.id()))) {
  77                 response = Response.status(Response.Status.BAD_REQUEST).entity(toEntity(Response.Status.BAD_REQUEST, code)).build();
  78             } else {
  79                 response = Response.status(Response.Status.EXPECTATION_FAILED).entity(toEntity(Response.Status.EXPECTATION_FAILED, code)).build();
  80             }
  81         } else {
  82             response = Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(toEntity(Response.Status.INTERNAL_SERVER_ERROR, code)).build();
  83         }
  84         return response;
  85     }
  86
  87     private Response transform(ConstraintViolationException validationException) {
  88         Set<ConstraintViolation<?>> constraintViolationSet = validationException.getConstraintViolations();
  89         String message;
  90         String fieldName = null;
  91         if (CollectionUtils.isEmpty(constraintViolationSet)) {
  92             message = validationException.getMessage();
  93         } else {
  94             // getting the first violation message for the output response.
  95             ConstraintViolation<?> constraintViolation = constraintViolationSet.iterator().next();
  96             message = constraintViolation.getMessage();
  97             fieldName = getFieldName(constraintViolation.getPropertyPath());
  98         }
  99         ErrorCode validationErrorCode = new ValidationErrorBuilder(message, fieldName).build();
 100         LOGGER.error(validationErrorCode.message(), validationException);
 101         return Response.status(Response.Status.EXPECTATION_FAILED) //error 417
 102             .entity(toEntity(Response.Status.EXPECTATION_FAILED, validationErrorCode)).build();
 103     }
 104
 105     private Response transform(JsonMappingException jsonMappingException) {
 106         ErrorCode jsonMappingErrorCode = new JsonMappingErrorBuilder().build();
 107         LOGGER.error(jsonMappingErrorCode.message(), jsonMappingException);
 108         return Response.status(Response.Status.EXPECTATION_FAILED) //error 417
 109             .entity(toEntity(Response.Status.EXPECTATION_FAILED, jsonMappingErrorCode)).build();
 110     }
 111
 112     private Response transform(Exception exception) {
 113         ErrorCode errorCode = new GeneralErrorBuilder().build();
 114         LOGGER.error(errorCode.message(), exception);
 115         return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(toEntity(Response.Status.INTERNAL_SERVER_ERROR, errorCode)).build();
 116     }
 117
 118     private String getFieldName(Path propertyPath) {
 119         return ((PathImpl) propertyPath).getLeafNode().toString();
 120     }
 121
 122     private Object toEntity(Response.Status status, ErrorCode code) {
 123         return new ErrorCodeAndMessage(status, code);
 124     }
 125 }