GenericExceptionMapper.java

/**
 * Copyright 2014 Confluent Inc.
 *
 * 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 io.confluent.rest.exceptions;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.ws.rs.core.Response;

import io.confluent.rest.RestConfig;

/**
 * Catch-all exception mapper to handle any uncaught errors that aren't already mapped.
 */
public class GenericExceptionMapper extends DebuggableExceptionMapper<Throwable> {
  private static final Logger log = LoggerFactory.getLogger(GenericExceptionMapper.class);

  public GenericExceptionMapper(RestConfig restConfig) {
    super(restConfig);
  }

  @Override
  public Response toResponse(Throwable exc) {
    log.error("Unhandled exception resulting in internal server error response", exc);

    // There's no more specific information about the exception that can be passed back to the user,
    // so we can only use the generic message. Debug mode will append the exception info.
    return createResponse(exc, Response.Status.INTERNAL_SERVER_ERROR.getStatusCode(),
                          Response.Status.INTERNAL_SERVER_ERROR,
                          Response.Status.INTERNAL_SERVER_ERROR.getReasonPhrase()).build();
  }
}