| /** |
| * 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.hdfs.server.namenode; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.hadoop.fs.ContentSummary; |
| import org.apache.hadoop.hdfs.protocol.ClientProtocol; |
| import org.apache.hadoop.ipc.RemoteException; |
| import org.apache.hadoop.security.UnixUserGroupInformation; |
| import org.znerd.xmlenc.XMLOutputter; |
| |
| /** Servlets for file checksum */ |
| public class ContentSummaryServlet extends DfsServlet { |
| /** For java.io.Serializable */ |
| private static final long serialVersionUID = 1L; |
| |
| /** {@inheritDoc} */ |
| public void doGet(HttpServletRequest request, HttpServletResponse response |
| ) throws ServletException, IOException { |
| final UnixUserGroupInformation ugi = getUGI(request); |
| final String path = request.getPathInfo(); |
| |
| final PrintWriter out = response.getWriter(); |
| final XMLOutputter xml = new XMLOutputter(out, "UTF-8"); |
| xml.declaration(); |
| try { |
| //get content summary |
| final ClientProtocol nnproxy = createNameNodeProxy(ugi); |
| final ContentSummary cs = nnproxy.getContentSummary(path); |
| |
| //write xml |
| xml.startTag(ContentSummary.class.getName()); |
| if (cs != null) { |
| xml.attribute("length" , "" + cs.getLength()); |
| xml.attribute("fileCount" , "" + cs.getFileCount()); |
| xml.attribute("directoryCount", "" + cs.getDirectoryCount()); |
| xml.attribute("quota" , "" + cs.getQuota()); |
| xml.attribute("spaceConsumed" , "" + cs.getSpaceConsumed()); |
| xml.attribute("spaceQuota" , "" + cs.getSpaceQuota()); |
| } |
| xml.endTag(); |
| } catch(IOException ioe) { |
| new RemoteException(ioe.getClass().getName(), ioe.getMessage() |
| ).writeXml(path, xml); |
| } |
| xml.endDocument(); |
| } |
| } |