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