Java tutorial
//$HeadURL$ /*---------------- FILE HEADER ------------------------------------------ This file is part of deegree. Copyright (C) 2001-2008 by: Department of Geography, University of Bonn http://www.giub.uni-bonn.de/deegree/ lat/lon GmbH http://www.lat-lon.de This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Contact: Andreas Poth lat/lon GmbH Aennchenstr. 19 53177 Bonn Germany E-Mail: poth@lat-lon.de Prof. Dr. Klaus Greve Department of Geography University of Bonn Meckenheimer Allee 166 53115 Bonn Germany E-Mail: greve@giub.uni-bonn.de ---------------------------------------------------------------------------*/ package org.deegree.igeo.io; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.Reader; import java.net.URL; import org.apache.commons.httpclient.HttpException; import org.deegree.framework.log.ILogger; import org.deegree.framework.log.LoggerFactory; import org.deegree.framework.util.FileUtils; import org.deegree.framework.util.HttpUtils; import org.deegree.framework.util.StringTools; import org.deegree.igeo.ApplicationContainer; /** * The <code></code> class TODO add class documentation here. * * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a> * * @author last edited by: $Author$ * * @version $Revision$, $Date$ * */ public class RemoteFSAccess implements FileSystemAccess { private static final ILogger LOG = LoggerFactory.getLogger(RemoteFSAccess.class); private ApplicationContainer<?> appCont; private String remoteAddr = "http://blizzard:8280/fileaccess/fileaccess"; /** * */ public RemoteFSAccess() { if (System.getProperty("remoteFileAddress") != null) { remoteAddr = System.getProperty("remoteFileAddress"); } } /* * (non-Javadoc) * * @see org.deegree.igeo.io.FileSystemAccess#setApplicationContainer(org.deegree.igeo.ApplicationContainer) */ public void setApplicationContainer(ApplicationContainer<?> appCont) { this.appCont = appCont; // TODO // read remote address from settings } /* * (non-Javadoc) * * @see org.deegree.igeo.io.FileSystemAccess#deleteFile(java.io.File) */ public void deleteFile(File file) throws IOException { String req = HttpUtils.addAuthenticationForKVP("", this.appCont.getUser(), this.appCont.getPassword(), this.appCont.getCertificate(remoteAddr)); StringBuilder sb = new StringBuilder(500); sb.append(req).append('&'); sb.append("FILE=").append(file.getPath()).append("&ACTION=delete"); LOG.logDebug("remote address: ", remoteAddr); LOG.logDebug("request: ", sb); HttpUtils.performHttpGet(remoteAddr, sb.toString(), 15000, null, null, null); } /* * (non-Javadoc) * * @see org.deegree.igeo.io.FileSystemAccess#exists(java.io.File) */ public boolean exists(File file) throws IOException, HttpException { String req = HttpUtils.addAuthenticationForKVP(remoteAddr, this.appCont.getUser(), this.appCont.getPassword(), this.appCont.getCertificate(remoteAddr)); StringBuilder sb = new StringBuilder(500); sb.append(req).append('&'); sb.append("FILE=").append(file.getPath()).append("&ACTION=exists"); LOG.logDebug("remote address: ", remoteAddr); LOG.logDebug("request: ", sb); InputStream is = HttpUtils.performHttpGet(remoteAddr, sb.toString(), 15000, null, null, null) .getResponseBodyAsStream(); String s = FileUtils.readTextFile(is).toString(); return "true".equals(s); } /* * (non-Javadoc) * * @see org.deegree.igeo.io.FileSystemAccess#listDirectory(java.io.File, java.lang.String[]) */ public File[] listDirectory(File directory, String... extension) throws IOException { String req = HttpUtils.addAuthenticationForKVP("", this.appCont.getUser(), this.appCont.getPassword(), this.appCont.getCertificate(remoteAddr)); StringBuilder sb = new StringBuilder(500); sb.append(req).append('&'); if (extension == null) { extension = new String[] { "*" }; } String ext = StringTools.arrayToString(extension, ','); if (ext.equalsIgnoreCase("prj")) { sb.append("action=listProjects&extensions=").append(ext); } else { sb.append("action=listDataFiles&extensions=").append(ext); } if (directory != null) { sb.append("&root=").append(directory.getPath()); } LOG.logDebug("remote address: ", remoteAddr); LOG.logDebug("request: ", sb); InputStream is = HttpUtils.performHttpGet(remoteAddr, sb.toString(), 15000, null, null, null) .getResponseBodyAsStream(); String s = FileUtils.readTextFile(is).toString(); String[] fl = StringTools.toArray(s, ",;", false); File[] files = new File[fl.length]; for (int i = 0; i < fl.length; i++) { files[i] = new File(fl[i]); } return files; } /* * (non-Javadoc) * * @see org.deegree.igeo.io.FileSystemAccess#readFile(java.io.File) */ public InputStream readFile(File file) throws IOException { String req = HttpUtils.addAuthenticationForKVP("", this.appCont.getUser(), this.appCont.getPassword(), this.appCont.getCertificate(remoteAddr)); StringBuilder sb = new StringBuilder(500); sb.append(req).append('&'); sb.append("FILE=").append(file.getPath()).append("&ACTION=readFile"); LOG.logDebug("remote address: ", remoteAddr); LOG.logDebug("request: ", sb); return HttpUtils.performHttpGet(remoteAddr, sb.toString(), 15000, null, null, null) .getResponseBodyAsStream(); } /* * (non-Javadoc) * * @see org.deegree.igeo.io.FileSystemAccess#getFileURL(java.io.File) */ public URL getFileURL(String file) throws IOException { if (file.toLowerCase().startsWith("http://")) { return new URL(file); } else { File fl = new File(file); if (fl.isAbsolute()) { fl = new File(fl.getName()); } String req = HttpUtils.addAuthenticationForKVP("", this.appCont.getUser(), this.appCont.getPassword(), this.appCont.getCertificate(remoteAddr)); StringBuilder sb = new StringBuilder(500); String path = StringTools.replace(fl.getPath(), "/", "2F", true); path = StringTools.replace(path, "\\", "2F", true); sb.append(remoteAddr).append('?').append(req).append('&'); sb.append("FILE=").append(path).append("&ACTION=readFile"); LOG.logDebug("file URL: ", sb); return new URL(sb.toString()); } } /* * (non-Javadoc) * * @see org.deegree.igeo.io.FileSystemAccess#writeFile(java.io.File, java.io.InputStream) */ public void writeFile(File file, InputStream contentStream) throws IOException { String req = HttpUtils.addAuthenticationForKVP(remoteAddr + "?", this.appCont.getUser(), this.appCont.getPassword(), this.appCont.getCertificate(remoteAddr)); StringBuilder sb = new StringBuilder(500); sb.append(req).append('&').append("FILE=").append(file.getPath()).append("&ACTION=writeFile"); LOG.logDebug("remote address: ", remoteAddr); LOG.logDebug("request: ", sb); HttpUtils.performHttpPost(sb.toString(), contentStream, 15000, null, null, "text/xml", null, null); contentStream.close(); } /* * (non-Javadoc) * * @see org.deegree.igeo.io.FileSystemAccess#writeFile(java.io.File, java.io.Reader) */ public void writeFile(File file, Reader contentReader) throws IOException { ByteArrayOutputStream bos = new ByteArrayOutputStream(100000); char[] buffer = new char[10240]; int cnt = contentReader.read(buffer); do { String s = new String(buffer, 0, cnt); bos.write(s.getBytes()); } while ((cnt = contentReader.read(buffer)) > 0); contentReader.close(); writeFile(file, new ByteArrayInputStream(bos.toByteArray())); bos.close(); } }