yacy_search_server/htroot/QuickCrawlLink_p.java
orbiter daf0f74361 joined anomic.net.URL, plasmaURL and url hash computation:
search profiling showed, that a major amount of time is wasted by computing url hashes. The computation does an intranet-check, which needs a DNS lookup. This caused that each urlhash computation needed 100-200 milliseconds, which caused remote searches to delay at least 1 second more that necessary. The solution to this problem is to attach a URL hash to the URL data structure, because that means that the url hash value can be filled after retrieval of the URL from the database. The redesign of the url/urlhash management caused a major redesign of many parts of the software. Since some parts had been decided to be given up they had been removed during this change to avoid unnecessary maintenance of unused code.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4074 6c8d7289-2bf4-0310-a012-ef5d649a1542
2007-09-05 09:01:35 +00:00

210 lines
9.0 KiB
Java

//QuickCrawlLink_p.java
//-----------------------
//part of the AnomicHTTPD caching proxy
//(C) by Michael Peter Christen; mc@anomic.de
//first published on http://www.anomic.de
//Frankfurt, Germany, 2004
//
//This file was contributed by Martin Thelian
//$LastChangedDate$
//$LastChangedBy$
//$LastChangedRevision$
//
//This program is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2 of the License, or
//(at your option) any later version.
//
//This program 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 General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with this program; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
//Using this software in any meaning (reading, learning, copying, compiling,
//running) means that you agree that the Author(s) is (are) not responsible
//for cost, loss of data or any harm that may be caused directly or indirectly
//by usage of this softare or this documentation. The usage of this software
//is on your own risk. The installation and usage (starting/running) of this
//software may allow other people or application to access your computer and
//any attached devices and is highly dependent on the configuration of the
//software which must be done by the user of the software; the author(s) is
//(are) also not responsible for proper configuration and usage of the
//software, even if provoked by documentation provided together with
//the software.
//
//Any changes to this file according to the GPL as documented in the file
//gpl.txt aside this file in the shipment you received can be done to the
//lines that follows this copyright notice here, but changes must not be
//done inside the copyright notive above. A re-distribution must contain
//the intact and unchanged copyright notice.
//Contributions and changes to the program code must be marked as such.
//You must compile this file with
//javac -classpath .:../classes IndexCreate_p.java
//if the shell's current path is HTROOT
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URLDecoder;
import java.util.Date;
import de.anomic.data.htmlTools;
import de.anomic.http.httpHeader;
import de.anomic.plasma.plasmaCrawlProfile;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacyURL;
public class QuickCrawlLink_p {
/**
* Example Javascript to call this servlet:
* <code>javascript:w = window.open('http://user:pwd@localhost:8080/QuickCrawlLink_p.html?indexText=on&indexMedia=on&crawlingQ=on&xdstopw=on&title=' + escape(document.title) + '&url=' + location.href,'_blank','height=150,width=500,resizable=yes,scrollbar=no,directory=no,menubar=no,location=no'); w.focus();</code>
* @param header the complete HTTP header of the request
* @param post any arguments for this servlet, the request carried with (GET as well as POST)
* @param env the serverSwitch object holding all runtime-data
* @return the rewrite-properties for the template
*/
public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
serverObjects prop = new serverObjects();
plasmaSwitchboard switchboard = (plasmaSwitchboard)env;
if (post == null) {
// send back usage example
prop.put("mode",0);
// getting the http host header
String hostSocket = (String) header.get(httpHeader.CONNECTION_PROP_HOST);
//String host = hostSocket;
int port = 80, pos = hostSocket.indexOf(":");
if (pos != -1) {
port = Integer.parseInt(hostSocket.substring(pos + 1));
//host = hostSocket.substring(0, pos);
}
prop.put("mode_host", "localhost");
prop.put("mode_port", Integer.toString(port));
return prop;
}
prop.put("mode",1);
// getting the URL
String crawlingStart = post.get("url",null);
try {
crawlingStart = URLDecoder.decode(crawlingStart, "UTF-8");
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// getting the browser title
String title = post.get("title",null);
// getting other parameters if set
String crawlingFilter = post.get("crawlingFilter", ".*");
int CrawlingDepth = Integer.parseInt(post.get("crawlingDepth", "0"));
boolean crawlDynamic = post.get("crawlingQ", "").equals("on");
boolean indexText = post.get("indexText", "on").equals("on");
boolean indexMedia = post.get("indexMedia", "on").equals("on");
boolean storeHTCache = post.get("storeHTCache", "").equals("on");
boolean remoteIndexing = post.get("crawlOrder", "").equals("on");
boolean xsstopw = post.get("xsstopw", "").equals("on");
boolean xdstopw = post.get("xdstopw", "").equals("on");
boolean xpstopw = post.get("xpstopw", "").equals("on");
prop.put("mode_url", (crawlingStart == null) ? "unknown" : htmlTools.encodeUnicode2html(crawlingStart, false));
prop.put("mode_title", (title == null) ? "unknown" : htmlTools.encodeUnicode2html(title, true));
if (crawlingStart != null) {
crawlingStart = crawlingStart.trim();
try {crawlingStart = new yacyURL(crawlingStart, null).toNormalform(true, true);} catch (MalformedURLException e1) {}
// check if url is proper
yacyURL crawlingStartURL = null;
try {
crawlingStartURL = new yacyURL(crawlingStart, null);
} catch (MalformedURLException e) {
prop.put("mode_status", 1);
prop.put("mode_code", "1");
return prop;
}
String urlhash = crawlingStartURL.hash();
switchboard.wordIndex.loadedURL.remove(urlhash);
switchboard.noticeURL.remove(urlhash);
switchboard.errorURL.remove(urlhash);
// create crawling profile
plasmaCrawlProfile.entry pe = null;
try {
pe = switchboard.profiles.newEntry(
crawlingStartURL.getHost(),
crawlingStart,
crawlingFilter,
crawlingFilter,
CrawlingDepth,
CrawlingDepth,
60 * 24 * 30, // recrawlIfOlder (minutes); here: one month
-1, // domFilterDepth, if negative: no auto-filter
-1, // domMaxPages, if negative: no count restriction
crawlDynamic,
indexText,
indexMedia,
storeHTCache,
true,
remoteIndexing,
xsstopw,
xdstopw,
xpstopw
);
} catch (Exception e) {
// mist
prop.put("mode_status", 2);//Error with url
prop.put("mode_code","2");
prop.put("mode_status_error", e.getMessage());
return prop;
}
// stack URL
String reasonString = null;
try {
reasonString = switchboard.sbStackCrawlThread.stackCrawl(
crawlingStart,
null,
yacyCore.seedDB.mySeed.hash,
(title==null)?"CRAWLING-ROOT":title,
new Date(),
0,
pe
);
} catch (InterruptedException e) {
reasonString = "Server shutdown in progess";
}
// validate rejection reason
if (reasonString == null) {
prop.put("mode_status", 0);//start msg
prop.put("mode_code","0");
} else {
prop.put("mode_status", 3);//start msg
prop.put("mode_code","3");
prop.put("mode_status_error", reasonString);
}
}
return prop;
}
}