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393 lines
22 KiB
393 lines
22 KiB
// WatchCrawler_p.java
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// (C) 2006 by Michael Peter Christen; mc@anomic.de, Frankfurt a. M., Germany
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// first published 18.12.2006 on http://www.anomic.de
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// this file was created using the an implementation from IndexCreate_p.java, published 02.12.2004
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
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// $LastChangedRevision: 1986 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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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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import java.io.File;
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import java.io.Writer;
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import java.net.MalformedURLException;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.regex.Pattern;
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import java.util.regex.PatternSyntaxException;
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import de.anomic.htmlFilter.htmlFilterContentScraper;
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import de.anomic.htmlFilter.htmlFilterWriter;
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import de.anomic.http.httpHeader;
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import de.anomic.net.URL;
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import de.anomic.plasma.plasmaCrawlProfile;
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import de.anomic.plasma.plasmaCrawlZURL;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.plasma.plasmaURL;
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import de.anomic.plasma.dbImport.dbImporter;
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import de.anomic.server.serverFileUtils;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.yacy.yacyCore;
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import de.anomic.yacy.yacyNewsPool;
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import de.anomic.yacy.yacyNewsRecord;
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public class WatchCrawler_p {
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public static final String CRAWLING_MODE_URL = "url";
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public static final String CRAWLING_MODE_FILE = "file";
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public static final String CRAWLING_MODE_SITEMAP = "sitemap";
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// this servlet does NOT create the WatchCrawler page content!
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// this servlet starts a web crawl. The interface for entering the web crawl parameters is in IndexCreate_p.html
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
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// return variable that accumulates replacements
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plasmaSwitchboard switchboard = (plasmaSwitchboard) env;
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serverObjects prop = new serverObjects();
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if (post == null) {
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// not a crawl start, only monitoring
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prop.put("info", 0);
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} else {
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prop.put("info", 0);
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if (post.containsKey("continue")) {
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// continue queue
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String queue = post.get("continue", "");
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if (queue.equals("localcrawler")) {
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switchboard.continueCrawlJob(plasmaSwitchboard.CRAWLJOB_LOCAL_CRAWL);
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} else if (queue.equals("remotecrawler")) {
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switchboard.continueCrawlJob(plasmaSwitchboard.CRAWLJOB_GLOBAL_CRAWL_TRIGGER);
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}
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}
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if (post.containsKey("pause")) {
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// pause queue
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String queue = post.get("pause", "");
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if (queue.equals("localcrawler")) {
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switchboard.pauseCrawlJob(plasmaSwitchboard.CRAWLJOB_LOCAL_CRAWL);
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} else if (queue.equals("remotecrawler")) {
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switchboard.pauseCrawlJob(plasmaSwitchboard.CRAWLJOB_GLOBAL_CRAWL_TRIGGER);
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}
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}
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if (post.containsKey("crawlingstart")) {
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// init crawl
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if (yacyCore.seedDB == null) {
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prop.put("info", 3);
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} else {
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// set new properties
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String newcrawlingfilter = post.get("crawlingFilter", ".*");
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env.setConfig("crawlingFilter", newcrawlingfilter);
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int newcrawlingdepth = Integer.parseInt(post.get("crawlingDepth", "0"));
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env.setConfig("crawlingDepth", Integer.toString(newcrawlingdepth));
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boolean crawlingIfOlderCheck = post.get("crawlingIfOlderCheck", "off").equals("on");
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int crawlingIfOlderNumber = Integer.parseInt(post.get("crawlingIfOlderNumber", "-1"));
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String crawlingIfOlderUnit = post.get("crawlingIfOlderUnit","year");
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int crawlingIfOlder = recrawlIfOlderC(crawlingIfOlderCheck, crawlingIfOlderNumber, crawlingIfOlderUnit);
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env.setConfig("crawlingIfOlder", crawlingIfOlder);
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boolean crawlingDomFilterCheck = post.get("crawlingDomFilterCheck", "off").equals("on");
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int crawlingDomFilterDepth = (crawlingDomFilterCheck) ? Integer.parseInt(post.get("crawlingDomFilterDepth", "-1")) : -1;
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env.setConfig("crawlingDomFilterDepth", Integer.toString(crawlingDomFilterDepth));
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boolean crawlingDomMaxCheck = post.get("crawlingDomMaxCheck", "off").equals("on");
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int crawlingDomMaxPages = (crawlingDomMaxCheck) ? Integer.parseInt(post.get("crawlingDomMaxPages", "-1")) : -1;
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env.setConfig("crawlingDomMaxPages", Integer.toString(crawlingDomMaxPages));
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boolean crawlingQ = post.get("crawlingQ", "off").equals("on");
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env.setConfig("crawlingQ", (crawlingQ) ? "true" : "false");
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boolean indexText = post.get("indexText", "off").equals("on");
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env.setConfig("indexText", (indexText) ? "true" : "false");
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boolean indexMedia = post.get("indexMedia", "off").equals("on");
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env.setConfig("indexMedia", (indexMedia) ? "true" : "false");
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boolean storeHTCache = post.get("storeHTCache", "off").equals("on");
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env.setConfig("storeHTCache", (storeHTCache) ? "true" : "false");
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boolean crawlOrder = post.get("crawlOrder", "off").equals("on");
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env.setConfig("crawlOrder", (crawlOrder) ? "true" : "false");
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boolean xsstopw = post.get("xsstopw", "off").equals("on");
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env.setConfig("xsstopw", (xsstopw) ? "true" : "false");
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boolean xdstopw = post.get("xdstopw", "off").equals("on");
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env.setConfig("xdstopw", (xdstopw) ? "true" : "false");
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boolean xpstopw = post.get("xpstopw", "off").equals("on");
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env.setConfig("xpstopw", (xpstopw) ? "true" : "false");
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String crawlingMode = post.get("crawlingMode","url");
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if (crawlingMode.equals(CRAWLING_MODE_URL)) {
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// getting the crawljob start url
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String crawlingStart = post.get("crawlingURL","");
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crawlingStart = crawlingStart.trim();
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// adding the prefix http:// if necessary
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int pos = crawlingStart.indexOf("://");
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if (pos == -1) crawlingStart = "http://" + crawlingStart;
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// normalizing URL
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try {crawlingStart = new URL(crawlingStart).toNormalform();} catch (MalformedURLException e1) {}
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// check if url is proper
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URL crawlingStartURL = null;
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try {
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crawlingStartURL = new URL(crawlingStart);
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} catch (MalformedURLException e) {
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crawlingStartURL = null;
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}
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// check if pattern matches
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if ((crawlingStartURL == null) /* || (!(crawlingStart.matches(newcrawlingfilter))) */) {
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// print error message
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prop.put("info", 4); //crawlfilter does not match url
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prop.put("info_newcrawlingfilter", newcrawlingfilter);
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prop.put("info_crawlingStart", crawlingStart);
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} else try {
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// check if the crawl filter works correctly
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Pattern.compile(newcrawlingfilter);
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// stack request
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// first delete old entry, if exists
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String urlhash = plasmaURL.urlHash(crawlingStart);
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switchboard.wordIndex.loadedURL.remove(urlhash);
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switchboard.noticeURL.remove(urlhash);
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switchboard.errorURL.remove(urlhash);
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// stack url
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plasmaCrawlProfile.entry pe = switchboard.profiles.newEntry(
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crawlingStartURL.getHost(), crawlingStart, newcrawlingfilter, newcrawlingfilter,
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newcrawlingdepth, newcrawlingdepth,
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crawlingIfOlder, crawlingDomFilterDepth, crawlingDomMaxPages,
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crawlingQ,
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indexText, indexMedia,
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storeHTCache, true, crawlOrder, xsstopw, xdstopw, xpstopw);
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String reasonString = switchboard.sbStackCrawlThread.stackCrawl(crawlingStart, null, yacyCore.seedDB.mySeed.hash, "CRAWLING-ROOT", new Date(), 0, pe);
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if (reasonString == null) {
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// liftoff!
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prop.put("info", 8);//start msg
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prop.put("info_crawlingURL", ((String) post.get("crawlingURL")));
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// generate a YaCyNews if the global flag was set
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if (crawlOrder) {
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Map m = new HashMap(pe.map()); // must be cloned
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m.remove("specificDepth");
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m.remove("indexText");
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m.remove("indexMedia");
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m.remove("remoteIndexing");
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m.remove("xsstopw");
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m.remove("xpstopw");
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m.remove("xdstopw");
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m.remove("storeTXCache");
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m.remove("storeHTCache");
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m.remove("generalFilter");
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m.remove("specificFilter");
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m.put("intention", post.get("intention", "").replace(',', '/'));
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yacyCore.newsPool.publishMyNews(new yacyNewsRecord(yacyNewsPool.CATEGORY_CRAWL_START, m));
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}
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} else {
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prop.put("info", 5); //Crawling failed
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prop.put("info_crawlingURL", ((String) post.get("crawlingURL")));
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prop.put("info_reasonString", reasonString);
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plasmaCrawlZURL.Entry ee = switchboard.errorURL.newEntry(crawlingStartURL, reasonString);
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ee.store();
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switchboard.errorURL.stackPushEntry(ee);
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}
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} catch (PatternSyntaxException e) {
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prop.put("info", 4); //crawlfilter does not match url
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prop.put("info_newcrawlingfilter", newcrawlingfilter);
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prop.put("info_error", e.getMessage());
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} catch (Exception e) {
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// mist
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prop.put("info", 6);//Error with url
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prop.put("info_crawlingStart", crawlingStart);
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prop.put("info_error", e.getMessage());
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e.printStackTrace();
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}
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} else if (crawlingMode.equals(CRAWLING_MODE_FILE)) {
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if (post.containsKey("crawlingFile")) {
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// getting the name of the uploaded file
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String fileName = (String) post.get("crawlingFile");
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try {
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// check if the crawl filter works correctly
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Pattern.compile(newcrawlingfilter);
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// loading the file content
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File file = new File(fileName);
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// getting the content of the bookmark file
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byte[] fileContent = (byte[]) post.get("crawlingFile$file");
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// TODO: determine the real charset here ....
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String fileString = new String(fileContent,"UTF-8");
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// parsing the bookmark file and fetching the headline and contained links
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htmlFilterContentScraper scraper = new htmlFilterContentScraper(new URL(file));
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//OutputStream os = new htmlFilterOutputStream(null, scraper, null, false);
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Writer writer = new htmlFilterWriter(null,null,scraper,null,false);
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serverFileUtils.write(fileString,writer);
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writer.close();
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//String headline = scraper.getHeadline();
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HashMap hyperlinks = (HashMap) scraper.getAnchors();
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// creating a crawler profile
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plasmaCrawlProfile.entry profile = switchboard.profiles.newEntry(fileName, "file://" + file.toString(), newcrawlingfilter, newcrawlingfilter, newcrawlingdepth, newcrawlingdepth, crawlingIfOlder, crawlingDomFilterDepth, crawlingDomMaxPages, crawlingQ, indexText, indexMedia, storeHTCache, true, crawlOrder, xsstopw, xdstopw, xpstopw);
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// loop through the contained links
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Iterator interator = hyperlinks.entrySet().iterator();
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int c = 0;
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while (interator.hasNext()) {
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Map.Entry e = (Map.Entry) interator.next();
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String nexturlstring = (String) e.getKey();
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if (nexturlstring == null) continue;
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nexturlstring = nexturlstring.trim();
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// normalizing URL
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nexturlstring = new URL(nexturlstring).toNormalform();
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// generating an url object
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URL nexturlURL = null;
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try {
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nexturlURL = new URL(nexturlstring);
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} catch (MalformedURLException ex) {
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nexturlURL = null;
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c++;
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continue;
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}
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// enqueuing the url for crawling
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String rejectReason = switchboard.sbStackCrawlThread.stackCrawl(nexturlstring, null, yacyCore.seedDB.mySeed.hash, (String)e.getValue(), new Date(), 1, profile);
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// if something failed add the url into the errorURL list
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if (rejectReason == null) {
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c++;
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} else {
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plasmaCrawlZURL.Entry ee = switchboard.errorURL.newEntry(nexturlURL, rejectReason);
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ee.store();
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switchboard.errorURL.stackPushEntry(ee);
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}
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}
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} catch (PatternSyntaxException e) {
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// print error message
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prop.put("info", 4); //crawlfilter does not match url
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prop.put("info_newcrawlingfilter", newcrawlingfilter);
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prop.put("info_error", e.getMessage());
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} catch (Exception e) {
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// mist
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prop.put("info", 7);//Error with file
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prop.put("info_crawlingStart", fileName);
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prop.put("info_error", e.getMessage());
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e.printStackTrace();
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}
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}
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} else if (crawlingMode.equals(CRAWLING_MODE_SITEMAP)) {
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String sitemapURLStr = null;
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try {
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// getting the sitemap URL
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sitemapURLStr = post.get("sitemapURL","");
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// create a new profile
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plasmaCrawlProfile.entry pe = switchboard.profiles.newEntry(
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sitemapURLStr, sitemapURLStr, newcrawlingfilter, newcrawlingfilter,
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newcrawlingdepth, newcrawlingdepth,
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crawlingIfOlder, crawlingDomFilterDepth, crawlingDomMaxPages,
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crawlingQ,
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indexText, indexMedia,
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storeHTCache, true, crawlOrder, xsstopw, xdstopw, xpstopw);
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// create a new sitemap importer
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dbImporter importerThread = switchboard.dbImportManager.getNewImporter("sitemap");
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if (importerThread != null) {
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HashMap initParams = new HashMap();
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initParams.put("sitemapURL",sitemapURLStr);
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initParams.put("crawlingProfile",pe.handle());
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importerThread.init(initParams);
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importerThread.startIt();
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}
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} catch (Exception e) {
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// mist
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prop.put("info", 6);//Error with url
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prop.put("info_crawlingStart", sitemapURLStr);
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prop.put("info_error", e.getMessage());
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e.printStackTrace();
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}
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}
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}
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}
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if (post.containsKey("crawlingPerformance")) {
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setPerformance(switchboard, post);
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}
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}
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// performance settings
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long LCbusySleep = Integer.parseInt(env.getConfig(plasmaSwitchboard.CRAWLJOB_LOCAL_CRAWL_BUSYSLEEP, "100"));
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int LCppm = (int) (60000L / LCbusySleep);
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prop.put("crawlingSpeedMaxChecked", (LCppm >= 1000) ? 1 : 0);
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prop.put("crawlingSpeedCustChecked", ((LCppm > 10) && (LCppm < 1000)) ? 1 : 0);
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prop.put("crawlingSpeedMinChecked", (LCppm <= 10) ? 1 : 0);
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prop.put("customPPMdefault", ((LCppm > 10) && (LCppm < 1000)) ? Integer.toString(LCppm) : "");
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// return rewrite properties
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return prop;
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}
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private static int recrawlIfOlderC(boolean recrawlIfOlderCheck, int recrawlIfOlderNumber, String crawlingIfOlderUnit) {
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if (!recrawlIfOlderCheck) return -1;
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if (crawlingIfOlderUnit.equals("year")) return recrawlIfOlderNumber * 60 * 24 * 365;
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if (crawlingIfOlderUnit.equals("month")) return recrawlIfOlderNumber * 60 * 24 * 30;
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if (crawlingIfOlderUnit.equals("day")) return recrawlIfOlderNumber * 60 * 24;
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if (crawlingIfOlderUnit.equals("hour")) return recrawlIfOlderNumber * 60;
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if (crawlingIfOlderUnit.equals("minute")) return recrawlIfOlderNumber;
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return -1;
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}
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private static void setPerformance(plasmaSwitchboard sb, serverObjects post) {
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String crawlingPerformance = post.get("crawlingPerformance","custom");
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long LCbusySleep = Integer.parseInt(sb.getConfig(plasmaSwitchboard.CRAWLJOB_LOCAL_CRAWL_BUSYSLEEP, "100"));
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int wantedPPM = (int) (60000L / LCbusySleep);
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try {
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wantedPPM = Integer.parseInt(post.get("customPPM",Integer.toString(wantedPPM)));
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} catch (NumberFormatException e) {}
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if (crawlingPerformance.equals("minimum")) wantedPPM = 10;
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if (crawlingPerformance.equals("maximum")) wantedPPM = 1000;
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sb.setPerformance(wantedPPM);
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}
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}
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