org.camunda.bpm.engine.rest.exception.ExceptionHandler Maven / Gradle / Ivy
/* 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.camunda.bpm.engine.rest.exception;
import org.camunda.bpm.engine.rest.dto.ExceptionDto;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ws.rs.ext.Provider;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Translates any {@link Throwable} to a HTTP 500 error and a JSON response.
* Response content format: {"type" : "ExceptionType", "message" : "some exception message"}
* @author nico.rehwaldt
*/
@Provider
public class ExceptionHandler implements ExceptionMapper {
private static final Logger LOGGER = Logger.getLogger(ExceptionHandler.class.getSimpleName());
@Override
public Response toResponse(Throwable throwable) {
LOGGER.log(Level.WARNING, getStackTrace(throwable));
ExceptionDto exceptionDto = ExceptionHandlerHelper.getInstance().fromException(throwable);
Response.Status responseStatus = ExceptionHandlerHelper.getInstance().getStatus(throwable);
return Response.status(responseStatus).entity(exceptionDto).type(MediaType.APPLICATION_JSON_TYPE).build();
}
protected String getStackTrace(Throwable aThrowable) {
final Writer result = new StringWriter();
final PrintWriter printWriter = new PrintWriter(result);
aThrowable.printStackTrace(printWriter);
return result.toString();
}
}