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yacy_search_server/source/de/anomic/crawler/CrawlSwitchboard.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
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// 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.Collections;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import net.yacy.cora.document.UTF8;
import net.yacy.cora.services.federated.yacy.CacheStrategy;
import net.yacy.kelondro.blob.MapHeap;
import net.yacy.kelondro.data.word.Word;
import net.yacy.kelondro.index.RowSpaceExceededException;
import net.yacy.kelondro.logging.Log;
import net.yacy.kelondro.order.Base64Order;
import net.yacy.kelondro.order.NaturalOrder;
import net.yacy.kelondro.util.FileUtils;
import net.yacy.kelondro.util.kelondroException;
import net.yacy.repository.RegexHelper;
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;
private MapHeap profilesActiveCrawls;
private final MapHeap profilesPassiveCrawls;
private final Map<byte[], CrawlProfile> profilesActiveCrawlsCache; //TreeMap<byte[], DigestURI>(Base64Order.enhancedCoder);
public CrawlProfile defaultProxyProfile;
public CrawlProfile defaultRemoteProfile;
public CrawlProfile defaultTextSnippetLocalProfile, defaultTextSnippetGlobalProfile;
public CrawlProfile defaultMediaSnippetLocalProfile, defaultMediaSnippetGlobalProfile;
public CrawlProfile 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;
this.profilesActiveCrawlsCache = Collections.synchronizedMap(new TreeMap<byte[], CrawlProfile>(Base64Order.enhancedCoder));
// 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);
this.profilesActiveCrawls = loadFromDB(profilesActiveFile);
for (final byte[] handle : this.profilesActiveCrawls.keySet()) {
CrawlProfile p;
try {
p = new CrawlProfile(this.profilesActiveCrawls.get(handle));
} catch (final IOException e) {
p = null;
} catch (final RowSpaceExceededException e) {
p = null;
}
if (p == null) continue;
if (!RegexHelper.isValidRegex(p.get(CrawlProfile.FILTER_URL_MUSTMATCH))) {
removeActive(handle);
Log.logWarning("CrawlProfiles", "removed Profile " + p.handle() + ": " + p.name()
+ " from active crawls since " + CrawlProfile.FILTER_URL_MUSTMATCH
+ " is no valid regular expression: " + p.get(CrawlProfile.FILTER_URL_MUSTMATCH));
} else if (!RegexHelper.isValidRegex(p.get(CrawlProfile.FILTER_URL_MUSTNOTMATCH))) {
removeActive(handle);
Log.logWarning("CrawlProfiles", "removed Profile " + p.handle() + ": " + p.name()
+ " from active crawls since " + CrawlProfile.FILTER_URL_MUSTNOTMATCH
+ " is no valid regular expression: " + p.get(CrawlProfile.FILTER_URL_MUSTNOTMATCH));
} else {
Log.logInfo("CrawlProfiles", "loaded Profile " + p.handle() + ": " + p.name());
}
}
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);
this.profilesPassiveCrawls = loadFromDB(profilesPassiveFile);
for (final byte[] handle : this.profilesPassiveCrawls.keySet()) {
CrawlProfile p;
try {
p = new CrawlProfile(this.profilesPassiveCrawls.get(handle));
Log.logInfo("CrawlProfiles", "loaded Profile " + p.handle() + ": " + p.name());
} catch (final IOException e) {
continue;
} catch (final RowSpaceExceededException e) {
continue;
}
}
log.logInfo("Loaded passive crawl profiles from file " + profilesPassiveFile.getName() +
", " + this.profilesPassiveCrawls.size() + " entries" +
", " + profilesPassiveFile.length()/1024);
}
public CrawlProfile getActive(final byte[] profileKey) {
if (profileKey == null) return null;
// get from cache
CrawlProfile p = this.profilesActiveCrawlsCache.get(profileKey);
if (p != null) return p;
// get from db
Map<String, String> m;
try {
m = this.profilesActiveCrawls.get(profileKey);
} catch (final IOException e) {
m = null;
} catch (final RowSpaceExceededException e) {
m = null;
}
if (m == null) return null;
p = new CrawlProfile(m);
this.profilesActiveCrawlsCache.put(profileKey, p);
return p;
}
public CrawlProfile getPassive(final byte[] profileKey) {
if (profileKey == null) return null;
Map<String, String> m;
try {
m = this.profilesPassiveCrawls.get(profileKey);
} catch (final IOException e) {
m = null;
} catch (final RowSpaceExceededException e) {
m = null;
}
if (m == null) return null;
return new CrawlProfile(m);
}
public Set<byte[]> getActive() {
return this.profilesActiveCrawls.keySet();
}
public Set<byte[]> getPassive() {
return this.profilesPassiveCrawls.keySet();
}
public void removeActive(final byte[] profileKey) {
if (profileKey == null) return;
this.profilesActiveCrawlsCache.remove(profileKey);
this.profilesActiveCrawls.remove(profileKey);
}
public void removePassive(final byte[] profileKey) {
if (profileKey == null) return;
this.profilesPassiveCrawls.remove(profileKey);
}
public void putActive(final byte[] profileKey, final CrawlProfile profile) {
this.profilesActiveCrawls.put(profileKey, profile);
this.profilesActiveCrawlsCache.put(profileKey, profile);
}
public void putPassive(final byte[] profileKey, final CrawlProfile profile) {
this.profilesPassiveCrawls.put(profileKey, profile);
}
private void initActiveCrawlProfiles() {
this.defaultProxyProfile = null;
this.defaultRemoteProfile = null;
this.defaultTextSnippetLocalProfile = null;
this.defaultTextSnippetGlobalProfile = null;
this.defaultMediaSnippetLocalProfile = null;
this.defaultMediaSnippetGlobalProfile = null;
this.defaultSurrogateProfile = null;
CrawlProfile profile;
String name;
try {
for (final byte[] handle: this.profilesActiveCrawls.keySet()) {
profile = new CrawlProfile(this.profilesActiveCrawls.get(handle));
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 = new CrawlProfile(
"proxy", null,
CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING,
CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING,
"",
0 /*Integer.parseInt(getConfig(PROXY_PREFETCH_DEPTH, "0"))*/,
true,
CrawlProfile.getRecrawlDate(CRAWL_PROFILE_PROXY_RECRAWL_CYCLE), -1, false,
true /*getConfigBool(PROXY_INDEXING_LOCAL_TEXT, true)*/,
true /*getConfigBool(PROXY_INDEXING_LOCAL_MEDIA, true)*/,
true,
false /*getConfigBool(PROXY_INDEXING_REMOTE, false)*/, true, true, true,
CacheStrategy.IFFRESH);
this.profilesActiveCrawls.put(UTF8.getBytes(this.defaultProxyProfile.handle()), this.defaultProxyProfile);
}
if (this.defaultRemoteProfile == null) {
// generate new default entry for remote crawling
this.defaultRemoteProfile = new CrawlProfile(CRAWL_PROFILE_REMOTE, null, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, "", CrawlProfile.MATCH_NEVER_STRING, 0, true,
-1, -1, true, true, true, false, false, true, true, false, CacheStrategy.IFFRESH);
this.profilesActiveCrawls.put(UTF8.getBytes(this.defaultRemoteProfile.handle()), this.defaultRemoteProfile);
}
if (this.defaultTextSnippetLocalProfile == null) {
// generate new default entry for snippet fetch and optional crawling
this.defaultTextSnippetLocalProfile = new CrawlProfile(CRAWL_PROFILE_SNIPPET_LOCAL_TEXT, null, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, "", 0, true,
CrawlProfile.getRecrawlDate(CRAWL_PROFILE_SNIPPET_LOCAL_TEXT_RECRAWL_CYCLE), -1, true, false, false, true, false, true, true, false, CacheStrategy.IFEXIST);
this.profilesActiveCrawls.put(UTF8.getBytes(this.defaultTextSnippetLocalProfile.handle()), this.defaultTextSnippetLocalProfile);
}
if (this.defaultTextSnippetGlobalProfile == null) {
// generate new default entry for snippet fetch and optional crawling
this.defaultTextSnippetGlobalProfile = new CrawlProfile(CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT, null, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, "", 0, true,
CrawlProfile.getRecrawlDate(CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT_RECRAWL_CYCLE), -1, true, true, true, true, false, true, true, false, CacheStrategy.IFEXIST);
this.profilesActiveCrawls.put(UTF8.getBytes(this.defaultTextSnippetGlobalProfile.handle()), this.defaultTextSnippetGlobalProfile);
}
this.defaultTextSnippetGlobalProfile.setCacheStrategy(CacheStrategy.IFEXIST);
if (this.defaultMediaSnippetLocalProfile == null) {
// generate new default entry for snippet fetch and optional crawling
this.defaultMediaSnippetLocalProfile = new CrawlProfile(CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA, null, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, "", 0, true,
CrawlProfile.getRecrawlDate(CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA_RECRAWL_CYCLE), -1, true, false, false, true, false, true, true, false, CacheStrategy.IFEXIST);
this.profilesActiveCrawls.put(UTF8.getBytes(this.defaultMediaSnippetLocalProfile.handle()), this.defaultMediaSnippetLocalProfile);
}
if (this.defaultMediaSnippetGlobalProfile == null) {
// generate new default entry for snippet fetch and optional crawling
this.defaultMediaSnippetGlobalProfile = new CrawlProfile(CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA, null, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, "", 0, true,
CrawlProfile.getRecrawlDate(CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA_RECRAWL_CYCLE), -1, true, false, true, true, false, true, true, false, CacheStrategy.IFEXIST);
this.profilesActiveCrawls.put(UTF8.getBytes(this.defaultMediaSnippetGlobalProfile.handle()), this.defaultMediaSnippetGlobalProfile);
}
if (this.defaultSurrogateProfile == null) {
// generate new default entry for surrogate parsing
this.defaultSurrogateProfile = new CrawlProfile(CRAWL_PROFILE_SURROGATE, null, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, CrawlProfile.MATCH_ALL_STRING, CrawlProfile.MATCH_NEVER_STRING, "", 0, false,
CrawlProfile.getRecrawlDate(CRAWL_PROFILE_SURROGATE_RECRAWL_CYCLE), -1, true, true, false, false, false, true, true, false, CacheStrategy.NOCACHE);
this.profilesActiveCrawls.put(UTF8.getBytes(this.defaultSurrogateProfile.handle()), this.defaultSurrogateProfile);
}
}
private void resetProfiles() {
this.profilesActiveCrawlsCache.clear();
final File pdb = new File(this.queuesRoot, DBFILE_ACTIVE_CRAWL_PROFILES);
if (pdb.exists()) FileUtils.deletedelete(pdb);
try {
this.profilesActiveCrawls = new MapHeap(pdb, Word.commonHashLength, NaturalOrder.naturalOrder, 1024 * 64, 500, ' ');
} catch (final IOException e1) {
Log.logException(e1);
this.profilesActiveCrawls = null;
}
initActiveCrawlProfiles();
}
public boolean clear() throws InterruptedException {
this.profilesActiveCrawlsCache.clear();
CrawlProfile entry;
boolean hasDoneSomething = false;
try {
for (final byte[] handle: this.profilesActiveCrawls.keySet()) {
// check for interruption
if (Thread.currentThread().isInterrupted()) throw new InterruptedException("Shutdown in progress");
// getting next profile
try {
entry = new CrawlProfile(this.profilesActiveCrawls.get(handle));
} catch (final IOException e) {
continue;
} catch (final RowSpaceExceededException e) {
continue;
}
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)))) {
final CrawlProfile p = new CrawlProfile(entry);
this.profilesPassiveCrawls.put(UTF8.getBytes(p.handle()), p);
this.profilesActiveCrawls.remove(handle);
hasDoneSomething = true;
}
}
} catch (final kelondroException e) {
resetProfiles();
hasDoneSomething = true;
}
return hasDoneSomething;
}
public void close() {
this.profilesActiveCrawlsCache.clear();
this.profilesActiveCrawls.close();
this.profilesPassiveCrawls.close();
}
/**
* Loads crawl profiles from a DB file.
* @param file DB file
* @return crawl profile data
*/
private MapHeap loadFromDB(final File file) {
MapHeap ret;
try {
ret = new MapHeap(file, Word.commonHashLength, NaturalOrder.naturalOrder, 1024 * 64, 500, ' ');
} catch (final IOException e) {
Log.logException(e);Log.logException(e);
FileUtils.deletedelete(file);
try {
ret = new MapHeap(file, Word.commonHashLength, NaturalOrder.naturalOrder, 1024 * 64, 500, ' ');
} catch (final IOException e1) {
Log.logException(e1);
ret = null;
}
}
return ret;
}
}
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