| /** |
| * 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.dfs; |
| |
| import java.util.*; |
| import java.io.*; |
| import org.apache.hadoop.util.StringUtils; |
| import org.apache.hadoop.conf.*; |
| import org.apache.commons.logging.*; |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| /** |
| * This class is used in Namesystem's jetty to do fsck on namenode. |
| */ |
| public class FsckServlet extends HttpServlet { |
| |
| private static final Log LOG = LogFactory.getLog("org.apache.hadoop.dfs.FSNamesystem"); |
| |
| @SuppressWarnings("unchecked") |
| public void doGet(HttpServletRequest request, |
| HttpServletResponse response |
| ) throws ServletException, IOException { |
| Map<String,String[]> pmap = request.getParameterMap(); |
| try { |
| ServletContext context = getServletContext(); |
| NameNode nn = (NameNode) context.getAttribute("name.node"); |
| Configuration conf = (Configuration) context.getAttribute("name.conf"); |
| NamenodeFsck fscker = new NamenodeFsck(conf, nn, pmap, response); |
| fscker.fsck(); |
| } catch (IOException ie) { |
| StringUtils.stringifyException(ie); |
| LOG.warn(ie); |
| String errMsg = "Fsck on path " + pmap.get("path") + " failed."; |
| response.sendError(HttpServletResponse.SC_GONE, errMsg); |
| throw ie; |
| } |
| } |
| } |