| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.hadoop.fs.http.server; |
| |
| import com.sun.jersey.api.container.ContainerException; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.lib.service.FileSystemAccessException; |
| import org.apache.hadoop.lib.wsrs.ExceptionProvider; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.slf4j.MDC; |
| |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.ext.Provider; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| |
| /** |
| * JAX-RS <code>ExceptionMapper</code> implementation that maps HttpFSServer's |
| * exceptions to HTTP status codes. |
| */ |
| @Provider |
| @InterfaceAudience.Private |
| public class HttpFSExceptionProvider extends ExceptionProvider { |
| private static Logger AUDIT_LOG = LoggerFactory.getLogger("httpfsaudit"); |
| private static Logger LOG = LoggerFactory.getLogger(HttpFSExceptionProvider.class); |
| |
| /** |
| * Maps different exceptions thrown by HttpFSServer to HTTP status codes. |
| * <p/> |
| * <ul> |
| * <li>SecurityException : HTTP UNAUTHORIZED</li> |
| * <li>FileNotFoundException : HTTP NOT_FOUND</li> |
| * <li>IOException : INTERNAL_HTTP SERVER_ERROR</li> |
| * <li>UnsupporteOperationException : HTTP BAD_REQUEST</li> |
| * <li>all other exceptions : HTTP INTERNAL_SERVER_ERROR </li> |
| * </ul> |
| * |
| * @param throwable exception thrown. |
| * |
| * @return mapped HTTP status code |
| */ |
| @Override |
| public Response toResponse(Throwable throwable) { |
| Response.Status status; |
| if (throwable instanceof FileSystemAccessException) { |
| throwable = throwable.getCause(); |
| } |
| if (throwable instanceof ContainerException) { |
| throwable = throwable.getCause(); |
| } |
| if (throwable instanceof SecurityException) { |
| status = Response.Status.UNAUTHORIZED; |
| } else if (throwable instanceof FileNotFoundException) { |
| status = Response.Status.NOT_FOUND; |
| } else if (throwable instanceof IOException) { |
| status = Response.Status.INTERNAL_SERVER_ERROR; |
| } else if (throwable instanceof UnsupportedOperationException) { |
| status = Response.Status.BAD_REQUEST; |
| } else if (throwable instanceof IllegalArgumentException) { |
| status = Response.Status.BAD_REQUEST; |
| } else { |
| status = Response.Status.INTERNAL_SERVER_ERROR; |
| } |
| return createResponse(status, throwable); |
| } |
| |
| /** |
| * Logs the HTTP status code and exception in HttpFSServer's log. |
| * |
| * @param status HTTP status code. |
| * @param throwable exception thrown. |
| */ |
| @Override |
| protected void log(Response.Status status, Throwable throwable) { |
| String method = MDC.get("method"); |
| String path = MDC.get("path"); |
| String message = getOneLineMessage(throwable); |
| AUDIT_LOG.warn("FAILED [{}:{}] response [{}] {}", new Object[]{method, path, status, message}); |
| LOG.warn("[{}:{}] response [{}] {}", new Object[]{method, path, status, message}, throwable); |
| } |
| |
| } |