JaxrsConfigExceptionHandler.java

/**
 * 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.deephacks.confit.internal.jaxrs;

import org.deephacks.confit.model.AbortRuntimeException;
import org.deephacks.confit.model.Event;
import org.deephacks.confit.model.Events;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

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

@Provider
public class JaxrsConfigExceptionHandler implements ExceptionMapper<Exception> {
    private Logger log = LoggerFactory.getLogger(JaxrsConfigExceptionHandler.class);

    public Response toResponse(Exception ex) {
        if (ex instanceof AbortRuntimeException) {
            AbortRuntimeException abort = (AbortRuntimeException) ex;
            log.warn("{}", ex.getMessage());
            log.debug("Exception occured.", ex);
            Event e = abort.getEvent();
            Status status = getStatus(e);
            return Response.serverError().status(status).entity(e.getMessage()).build();
        } else if (ex instanceof WebApplicationException) {
            WebApplicationException webex = (WebApplicationException) ex;
            return Response.serverError().status(webex.getResponse().getStatus()).build();
        } else {
            log.warn("Unexpected INTERNAL_SERVER_ERROR ", ex);
            return Response.serverError().status(Status.INTERNAL_SERVER_ERROR).build();
        }
    }

    public static Status getStatus(Event e) {
        Status status;
        // 300 codes are reserved for user input errors
        switch (e.getCode()) {
            case Events.CFG101:
                status = Status.NOT_FOUND;
                break;
            case Events.CFG102:
                status = Status.NOT_FOUND;
                break;
            case Events.CFG103:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG104:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG105:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG106:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG107:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG108:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG109:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG110:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG111:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG301:
                status = Status.NOT_FOUND;
                break;
            case Events.CFG302:
                status = Status.FORBIDDEN;
                break;
            case Events.CFG303:
                status = Status.CONFLICT;
                break;
            case Events.CFG304:
                status = Status.NOT_FOUND;
                break;
            case Events.CFG305:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG306:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG307:
                status = Status.FORBIDDEN;
                break;
            case Events.CFG309:
                status = Status.BAD_REQUEST;
                break;
            case Events.CFG310:
                status = Status.CONFLICT;
                break;
            case Events.CFG311:
                status = Status.FORBIDDEN;
                break;
            default:
                status = Status.INTERNAL_SERVER_ERROR;
                break;
        }
        return status;
    }
}