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yacy_search_server/source/de/anomic/crawler/CrawlSwitchboard.java
orbiter d77a8f3b3e added some modifications recommended by PMD for better performance 
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6560 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-01-10 01:40:26 +00:00

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