*) next step of restructuring for new crawlers - adding first testversion of ftp crawler class -- does not create a htCache entry yet git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2483 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
theli
19 years ago
parent
5847492537
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ab5a9bee66
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// CrawlerWorker.java
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// -------------------------------------
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// part of YACY
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2006
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//
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// This file ist contributed by Martin Thelian
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//
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// $LastChangedDate: 2006-02-20 23:57:42 +0100 (Mo, 20 Feb 2006) $
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// $LastChangedRevision: 1715 $
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// $LastChangedBy: theli $
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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package de.anomic.plasma.crawler.ftp;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.PrintStream;
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import de.anomic.net.ftpc;
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import de.anomic.plasma.plasmaHTCache;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.plasma.crawler.AbstractCrawlWorker;
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import de.anomic.plasma.crawler.plasmaCrawlWorker;
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import de.anomic.plasma.crawler.plasmaCrawlerPool;
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import de.anomic.plasma.plasmaHTCache.Entry;
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import de.anomic.server.logging.serverLog;
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public class CrawlWorker extends AbstractCrawlWorker implements
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plasmaCrawlWorker {
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public CrawlWorker(ThreadGroup theTG, plasmaCrawlerPool thePool, plasmaSwitchboard theSb, plasmaHTCache theCacheManager, serverLog theLog) {
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super(theTG, thePool, theSb, theCacheManager, theLog);
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// this crawler supports ftp
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this.protocol = "ftp";
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}
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public void close() {
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// TODO Auto-generated method stub
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}
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public void init() {
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// TODO Auto-generated method stub
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}
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public Entry load() throws IOException {
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File cacheFile = cacheManager.getCachePath(url);
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cacheFile.getParentFile().mkdirs();
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ByteArrayOutputStream bout = new ByteArrayOutputStream();
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PrintStream out = new PrintStream(bout);
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ByteArrayOutputStream berr = new ByteArrayOutputStream();
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PrintStream err = new PrintStream(berr);
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ftpc ftpClient = new ftpc(System.in, out, err);
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String userInfo = this.url.getUserInfo();
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String userName, userPwd;
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if (userInfo != null) {
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int pos = userInfo.indexOf(":");
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userName = userInfo.substring(0,pos);
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userPwd = userInfo.substring(pos+1);
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} else {
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userName = "anonymous";
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userPwd = "anonymous";
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}
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ftpClient.exec("open " + this.url.getHost(), false);
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ftpClient.exec("user " + userName + " " + userPwd, false);
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ftpClient.exec("binary", false);
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// cd
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String file = "";
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String path = this.url.getPath();
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int pos = path.lastIndexOf("/");
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if (pos == -1) {
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file = path;
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path = "/";
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} else {
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file = path.substring(pos+1);
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path = path.substring(0,pos);
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}
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ftpClient.exec("cd \"" + path + "\"", false);
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if (ftpClient.isFolder(file)) {
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ftpClient.exec("cd \"" + file + "\"", false);
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// TODO: dirlist
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} else {
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// download the remote file
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ftpClient.exec("get \"" + file + "\" \"" + cacheFile.getAbsolutePath() + "\"", false);
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}
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ftpClient.exec("close", false);
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ftpClient.exec("exit", false);
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// TODO: create a new htCache entry ....
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return null;
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}
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}
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