DefaultExceptionMapper.java

/*   Copyright 2012 Tim Garrett, Mothsoft LLC
 *
 *  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 com.mothsoft.alexis.service.exception;

import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;

import org.apache.log4j.Logger;

public class DefaultExceptionMapper implements ExceptionMapper<Exception> {

    private static final Logger logger = Logger.getLogger(DefaultExceptionMapper.class);

    @Override
    public Response toResponse(Exception exception) {
        logger.warn(exception, exception);

        if (exception instanceof WebApplicationException) {
            final WebApplicationException wae = (WebApplicationException) exception;
            return wae.getResponse();
        } else if (exception instanceof IllegalArgumentException) {
            return Response.status(Response.Status.BAD_REQUEST).entity(exception.getMessage()).build();
        } else {
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
        }
    }

}