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257 lines
14 KiB
257 lines
14 KiB
// CrawlSwitchboard.java
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// (C) 2005, 2006 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 2005 on http://www.anomic.de
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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: 2009-05-28 01:51:34 +0200 (Do, 28 Mai 2009) $
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// $LastChangedRevision: 5988 $
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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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package de.anomic.crawler;
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import java.io.File;
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import java.io.IOException;
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import java.util.Iterator;
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import de.anomic.crawler.CrawlProfile.entry;
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import de.anomic.document.Word;
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import de.anomic.kelondro.util.FileUtils;
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import de.anomic.kelondro.util.kelondroException;
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import de.anomic.yacy.yacySeedDB;
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import de.anomic.yacy.logging.Log;
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public final class CrawlSwitchboard {
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public static final String CRAWL_PROFILE_PROXY = "proxy";
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public static final String CRAWL_PROFILE_REMOTE = "remote";
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public static final String CRAWL_PROFILE_SNIPPET_LOCAL_TEXT = "snippetLocalText";
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public static final String CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT = "snippetGlobalText";
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public static final String CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA = "snippetLocalMedia";
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public static final String CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA = "snippetGlobalMedia";
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public static final String CRAWL_PROFILE_SURROGATE = "surrogates";
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public static final String DBFILE_ACTIVE_CRAWL_PROFILES = "crawlProfilesActive.heap";
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public static final String DBFILE_PASSIVE_CRAWL_PROFILES = "crawlProfilesPassive.heap";
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public static final long CRAWL_PROFILE_PROXY_RECRAWL_CYCLE = 60L * 24L;
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public static final long CRAWL_PROFILE_SNIPPET_LOCAL_TEXT_RECRAWL_CYCLE = 60L * 24L * 30L;
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public static final long CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT_RECRAWL_CYCLE = 60L * 24L * 30L;
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public static final long CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA_RECRAWL_CYCLE = 60L * 24L * 30L;
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public static final long CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA_RECRAWL_CYCLE = 60L * 24L * 30L;
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public static final long CRAWL_PROFILE_SURROGATE_RECRAWL_CYCLE = 60L * 24L * 30L;
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private final Log log;
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public CrawlProfile profilesActiveCrawls, profilesPassiveCrawls;
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public CrawlProfile.entry defaultProxyProfile;
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public CrawlProfile.entry defaultRemoteProfile;
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public CrawlProfile.entry defaultTextSnippetLocalProfile, defaultTextSnippetGlobalProfile;
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public CrawlProfile.entry defaultMediaSnippetLocalProfile, defaultMediaSnippetGlobalProfile;
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public CrawlProfile.entry defaultSurrogateProfile;
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private final File queuesRoot;
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public CrawlSwitchboard(
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final yacySeedDB peers,
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final String networkName,
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final Log log,
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final File queuesRoot) {
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log.logInfo("Initializing Word Index for the network '" + networkName + "', word hash cache size is " + Word.hashCacheSize + ".");
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if (networkName == null || networkName.length() == 0) {
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log.logSevere("no network name given - shutting down");
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System.exit(0);
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}
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this.log = log;
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// make crawl profiles database and default profiles
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this.queuesRoot = queuesRoot;
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this.queuesRoot.mkdirs();
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this.log.logConfig("Initializing Crawl Profiles");
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final File profilesActiveFile = new File(queuesRoot, DBFILE_ACTIVE_CRAWL_PROFILES);
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if (!profilesActiveFile.exists()) {
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// migrate old file
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final File oldFile = new File(new File(queuesRoot.getParentFile().getParentFile().getParentFile(), "PLASMADB"), "crawlProfilesActive1.db");
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if (oldFile.exists()) oldFile.renameTo(profilesActiveFile);
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}
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try {
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this.profilesActiveCrawls = new CrawlProfile(profilesActiveFile);
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} catch (IOException e) {
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e.printStackTrace();
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FileUtils.deletedelete(profilesActiveFile);
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try {
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this.profilesActiveCrawls = new CrawlProfile(profilesActiveFile);
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} catch (IOException e1) {
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e1.printStackTrace();
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this.profilesActiveCrawls = null;
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}
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}
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initActiveCrawlProfiles();
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log.logInfo("Loaded active crawl profiles from file " + profilesActiveFile.getName() + ", " + this.profilesActiveCrawls.size() + " entries");
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final File profilesPassiveFile = new File(queuesRoot, DBFILE_PASSIVE_CRAWL_PROFILES);
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if (!profilesPassiveFile.exists()) {
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// migrate old file
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final File oldFile = new File(new File(queuesRoot.getParentFile().getParentFile().getParentFile(), "PLASMADB"), "crawlProfilesPassive1.db");
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if (oldFile.exists()) oldFile.renameTo(profilesPassiveFile);
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}
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try {
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this.profilesPassiveCrawls = new CrawlProfile(profilesPassiveFile);
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} catch (IOException e) {
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FileUtils.deletedelete(profilesPassiveFile);
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try {
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this.profilesPassiveCrawls = new CrawlProfile(profilesPassiveFile);
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} catch (IOException e1) {
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e1.printStackTrace();
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this.profilesPassiveCrawls = null;
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}
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}
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log.logInfo("Loaded passive crawl profiles from file " + profilesPassiveFile.getName() +
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", " + this.profilesPassiveCrawls.size() + " entries" +
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", " + profilesPassiveFile.length()/1024);
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}
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public void clear() {
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}
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private void initActiveCrawlProfiles() {
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this.defaultProxyProfile = null;
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this.defaultRemoteProfile = null;
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this.defaultTextSnippetLocalProfile = null;
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this.defaultTextSnippetGlobalProfile = null;
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this.defaultMediaSnippetLocalProfile = null;
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this.defaultMediaSnippetGlobalProfile = null;
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this.defaultSurrogateProfile = null;
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final Iterator<CrawlProfile.entry> i = this.profilesActiveCrawls.profiles(true);
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CrawlProfile.entry profile;
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String name;
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try {
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while (i.hasNext()) {
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profile = i.next();
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name = profile.name();
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if (name.equals(CRAWL_PROFILE_PROXY)) this.defaultProxyProfile = profile;
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if (name.equals(CRAWL_PROFILE_REMOTE)) this.defaultRemoteProfile = profile;
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if (name.equals(CRAWL_PROFILE_SNIPPET_LOCAL_TEXT)) this.defaultTextSnippetLocalProfile = profile;
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if (name.equals(CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT)) this.defaultTextSnippetGlobalProfile = profile;
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if (name.equals(CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA)) this.defaultMediaSnippetLocalProfile = profile;
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if (name.equals(CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA)) this.defaultMediaSnippetGlobalProfile = profile;
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if (name.equals(CRAWL_PROFILE_SURROGATE)) this.defaultSurrogateProfile = profile;
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}
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} catch (final Exception e) {
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this.profilesActiveCrawls.clear();
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this.defaultProxyProfile = null;
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this.defaultRemoteProfile = null;
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this.defaultTextSnippetLocalProfile = null;
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this.defaultTextSnippetGlobalProfile = null;
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this.defaultMediaSnippetLocalProfile = null;
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this.defaultMediaSnippetGlobalProfile = null;
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this.defaultSurrogateProfile = null;
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}
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if (this.defaultProxyProfile == null) {
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// generate new default entry for proxy crawling
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this.defaultProxyProfile = this.profilesActiveCrawls.newEntry("proxy", null, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER,
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0 /*Integer.parseInt(getConfig(PROXY_PREFETCH_DEPTH, "0"))*/,
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this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_PROXY_RECRAWL_CYCLE), -1, -1, false,
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true /*getConfigBool(PROXY_INDEXING_LOCAL_TEXT, true)*/,
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true /*getConfigBool(PROXY_INDEXING_LOCAL_MEDIA, true)*/,
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true, true,
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false /*getConfigBool(PROXY_INDEXING_REMOTE, false)*/, true, true, true,
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CrawlProfile.CACHE_STRATEGY_IFFRESH);
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}
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if (this.defaultRemoteProfile == null) {
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// generate new default entry for remote crawling
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defaultRemoteProfile = this.profilesActiveCrawls.newEntry(CRAWL_PROFILE_REMOTE, null, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
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-1, -1, -1, true, true, true, false, true, false, true, true, false, CrawlProfile.CACHE_STRATEGY_IFFRESH);
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}
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if (this.defaultTextSnippetLocalProfile == null) {
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// generate new default entry for snippet fetch and optional crawling
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defaultTextSnippetLocalProfile = this.profilesActiveCrawls.newEntry(CRAWL_PROFILE_SNIPPET_LOCAL_TEXT, null, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
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this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SNIPPET_LOCAL_TEXT_RECRAWL_CYCLE), -1, -1, true, false, false, false, false, false, true, true, false, CrawlProfile.CACHE_STRATEGY_IFFRESH);
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}
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if (this.defaultTextSnippetGlobalProfile == null) {
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// generate new default entry for snippet fetch and optional crawling
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defaultTextSnippetGlobalProfile = this.profilesActiveCrawls.newEntry(CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT, null, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
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this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT_RECRAWL_CYCLE), -1, -1, true, true, true, true, true, false, true, true, false, CrawlProfile.CACHE_STRATEGY_CACHEONLY);
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}
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if (this.defaultMediaSnippetLocalProfile == null) {
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// generate new default entry for snippet fetch and optional crawling
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defaultMediaSnippetLocalProfile = this.profilesActiveCrawls.newEntry(CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA, null, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
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this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA_RECRAWL_CYCLE), -1, -1, true, false, false, false, false, false, true, true, false, CrawlProfile.CACHE_STRATEGY_IFEXIST);
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}
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if (this.defaultMediaSnippetGlobalProfile == null) {
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// generate new default entry for snippet fetch and optional crawling
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defaultMediaSnippetGlobalProfile = this.profilesActiveCrawls.newEntry(CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA, null, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
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this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA_RECRAWL_CYCLE), -1, -1, true, false, true, true, true, false, true, true, false, CrawlProfile.CACHE_STRATEGY_IFEXIST);
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}
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if (this.defaultSurrogateProfile == null) {
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// generate new default entry for surrogate parsing
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defaultSurrogateProfile = this.profilesActiveCrawls.newEntry(CRAWL_PROFILE_SURROGATE, null, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
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this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SURROGATE_RECRAWL_CYCLE), -1, -1, true, true, false, false, false, false, true, true, false, CrawlProfile.CACHE_STRATEGY_NOCACHE);
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}
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}
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private void resetProfiles() {
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final File pdb = new File(this.queuesRoot, DBFILE_ACTIVE_CRAWL_PROFILES);
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if (pdb.exists()) FileUtils.deletedelete(pdb);
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try {
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profilesActiveCrawls = new CrawlProfile(pdb);
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} catch (IOException e) {
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e.printStackTrace();
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}
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initActiveCrawlProfiles();
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}
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public boolean cleanProfiles() throws InterruptedException {
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final Iterator<CrawlProfile.entry> iter = profilesActiveCrawls.profiles(true);
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CrawlProfile.entry entry;
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boolean hasDoneSomething = false;
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try {
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while (iter.hasNext()) {
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// check for interruption
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if (Thread.currentThread().isInterrupted()) throw new InterruptedException("Shutdown in progress");
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// getting next profile
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entry = iter.next();
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if (!((entry.name().equals(CRAWL_PROFILE_PROXY)) ||
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(entry.name().equals(CRAWL_PROFILE_REMOTE)) ||
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(entry.name().equals(CRAWL_PROFILE_SNIPPET_LOCAL_TEXT)) ||
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(entry.name().equals(CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT)) ||
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(entry.name().equals(CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA)) ||
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(entry.name().equals(CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA)) ||
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(entry.name().equals(CRAWL_PROFILE_SURROGATE)))) {
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profilesPassiveCrawls.newEntry(entry.map());
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iter.remove();
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hasDoneSomething = true;
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}
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}
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} catch (final kelondroException e) {
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resetProfiles();
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hasDoneSomething = true;
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}
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return hasDoneSomething;
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}
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public void close() {
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this.profilesActiveCrawls.close();
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this.profilesPassiveCrawls.close();
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}
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}
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