com.spotify.autoscaler.ThrowableMapper Maven / Gradle / Ivy

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/*-
 * -\-\-
 * bigtable-autoscaler
 * --
 * Copyright (C) 2018 Spotify AB
 * --
 * 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.spotify.autoscaler;

import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

class ThrowableMapper implements ExceptionMapper {

  private static final Logger LOGGER = LoggerFactory.getLogger(ThrowableMapper.class);

  @Override
  public Response toResponse(final Throwable exception) {
    if (WebApplicationException.class.isInstance(exception)) {
      return WebApplicationException.class.cast(exception).getResponse();
    }
    LOGGER.error("Unexpected exception when handling request", exception);
    return Response.serverError().entity(exception.toString()).build();
  }
}