| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.nifi.registry.web.mapper; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.stereotype.Component; |
| |
| import javax.validation.ConstraintViolation; |
| import javax.validation.ConstraintViolationException; |
| import javax.validation.Path; |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.ext.ExceptionMapper; |
| import javax.ws.rs.ext.Provider; |
| |
| @Component |
| @Provider |
| public class ConstraintViolationExceptionMapper implements ExceptionMapper<ConstraintViolationException> { |
| |
| private static final Logger logger = LoggerFactory.getLogger(ConstraintViolationExceptionMapper.class); |
| |
| @Override |
| public Response toResponse(ConstraintViolationException exception) { |
| // start with the overall message which will be something like "Cannot create xyz" |
| final StringBuilder errorMessage = new StringBuilder(exception.getMessage()).append(" - "); |
| |
| boolean first = true; |
| for (final ConstraintViolation violation : exception.getConstraintViolations()) { |
| if (!first) { |
| errorMessage.append(", "); |
| } |
| first = false; |
| |
| // lastNode should end up as the field that failed validation |
| Path.Node lastNode = null; |
| for (final Path.Node node : violation.getPropertyPath()) { |
| lastNode = node; |
| } |
| |
| // append something like "xyz must not be..." |
| errorMessage.append(lastNode.getName()).append(" ").append(violation.getMessage()); |
| } |
| |
| logger.info(String.format("%s. Returning %s response.", errorMessage, Response.Status.BAD_REQUEST)); |
| if (logger.isDebugEnabled()) { |
| logger.debug(StringUtils.EMPTY, exception); |
| } |
| |
| return Response.status(Response.Status.BAD_REQUEST).entity(errorMessage.toString()).type("text/plain").build(); |
| } |
| |
| } |