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/*
* Copyright © 2016-2018 European Support Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.openecomp.sdc.common.errors;
import com.fasterxml.jackson.databind.JsonMappingException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.servlet.http.HttpServletResponse;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.Path;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.ext.ExceptionMapper;
import org.apache.commons.collections4.CollectionUtils;
import org.hibernate.validator.internal.engine.path.PathImpl;
import org.onap.sdc.security.RepresentationUtils;
import org.openecomp.core.utilities.file.FileUtils;
import org.openecomp.core.utilities.json.JsonUtil;
import org.openecomp.sdc.exception.NotAllowedSpecialCharsException;
import org.openecomp.sdc.exception.ResponseFormat;
import org.openecomp.sdc.exception.ServiceException;
import org.openecomp.sdc.logging.api.Logger;
import org.openecomp.sdc.logging.api.LoggerFactory;
public class DefaultExceptionMapper implements ExceptionMapper<Exception> {
private static final String ERROR_CODES_TO_RESPONSE_STATUS_MAPPING_FILE = "errorCodesToResponseStatusMapping.json";
@SuppressWarnings("unchecked")
private static final Map<String, String> ERROR_CODE_TO_RESPONSE_STATUS = FileUtils
.readViaInputStream(ERROR_CODES_TO_RESPONSE_STATUS_MAPPING_FILE, stream -> JsonUtil.json2Object(stream, Map.class));
private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExceptionMapper.class);
@Override
public Response toResponse(Exception exception) {
Response response;
if (exception instanceof CoreException) {
response = transform((CoreException) exception);
} else if (exception instanceof ConstraintViolationException) {
response = transform((ConstraintViolationException) exception);
} else if (exception instanceof JsonMappingException) {
response = transform((JsonMappingException) exception);
} else {
response = transform(exception);
}
List<Object> contentTypes = new ArrayList<>();
contentTypes.add(MediaType.APPLICATION_JSON);
response.getMetadata().put("Content-Type", contentTypes);
return response;
}
private Response transform(final CoreException coreException) {
final ErrorCode code = coreException.code();
LOGGER.error(code.message(), coreException);
if (coreException.code().category().equals(ErrorCategory.APPLICATION)) {
final Status errorStatus = Status.valueOf(ERROR_CODE_TO_RESPONSE_STATUS.get(code.id()));
if (List.of(Status.BAD_REQUEST, Status.FORBIDDEN, Status.NOT_FOUND, Status.INTERNAL_SERVER_ERROR).contains(errorStatus)) {
return buildResponse(errorStatus, code);
}
return buildResponse(Status.EXPECTATION_FAILED, code);
}
return buildResponse(Status.INTERNAL_SERVER_ERROR, code);
}
private Response buildResponse(final Status status, final ErrorCode code) {
return Response.status(status).entity(toEntity(status, code)).build();
}
private Response transform(ConstraintViolationException validationException) {
Set<ConstraintViolation<?>> constraintViolationSet = validationException.getConstraintViolations();
String message;
String fieldName = null;
if (CollectionUtils.isEmpty(constraintViolationSet)) {
message = validationException.getMessage();
} else {
// getting the first violation message for the output response.
ConstraintViolation<?> constraintViolation = constraintViolationSet.iterator().next();
message = constraintViolation.getMessage();
fieldName = getFieldName(constraintViolation.getPropertyPath());
}
ErrorCode validationErrorCode = new ValidationErrorBuilder(message, fieldName).build();
LOGGER.error(validationErrorCode.message(), validationException);
return buildResponse(Status.EXPECTATION_FAILED, validationErrorCode);
}
private Response transform(JsonMappingException jsonMappingException) {
ErrorCode jsonMappingErrorCode = new JsonMappingErrorBuilder().build();
LOGGER.error(jsonMappingErrorCode.message(), jsonMappingException);
return buildResponse(Status.EXPECTATION_FAILED, jsonMappingErrorCode);
}
private Response transform(Exception exception) {
ErrorCode errorCode = new GeneralErrorBuilder().build();
LOGGER.error(errorCode.message(), exception);
return buildResponse(Status.INTERNAL_SERVER_ERROR, errorCode);
}
private String getFieldName(Path propertyPath) {
return ((PathImpl) propertyPath).getLeafNode().toString();
}
private Object toEntity(final Status status, final ErrorCode code) {
return new ErrorCodeAndMessage(status, code);
}
public void writeToResponse(final NotAllowedSpecialCharsException e, final HttpServletResponse httpResponse) throws IOException {
final ResponseFormat responseFormat = new ResponseFormat(400);
responseFormat.setServiceException(new ServiceException(e.getErrorId(), e.getMessage(), new String[0]));
httpResponse.setStatus(responseFormat.getStatus());
httpResponse.setContentType("application/json");
httpResponse.setCharacterEncoding("UTF-8");
httpResponse.getWriter().write(RepresentationUtils.toRepresentation(responseFormat.getRequestError()));
}
}
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