// plasmaWordIndex.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.plasma;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import de.anomic.crawler.CrawlProfile;
import de.anomic.crawler.IndexingStack;
import de.anomic.htmlFilter.htmlFilterContentScraper;
import de.anomic.http.httpdProxyCacheEntry;
import de.anomic.index.indexCollectionRI;
import de.anomic.index.indexContainer;
import de.anomic.index.indexContainerOrder;
import de.anomic.index.indexRAMRI;
import de.anomic.index.indexRI;
import de.anomic.index.indexRWIEntry;
import de.anomic.index.indexRWIRowEntry;
import de.anomic.index.indexReferenceBlacklist;
import de.anomic.index.indexRepositoryReference;
import de.anomic.index.indexURLReference;
import de.anomic.index.indexWord;
import de.anomic.index.indexRepositoryReference.Export;
import de.anomic.kelondro.kelondroBase64Order;
import de.anomic.kelondro.kelondroByteOrder;
import de.anomic.kelondro.kelondroCloneableIterator;
import de.anomic.kelondro.kelondroException;
import de.anomic.kelondro.kelondroMergeIterator;
import de.anomic.kelondro.kelondroOrder;
import de.anomic.kelondro.kelondroRotateIterator;
import de.anomic.kelondro.kelondroRowCollection;
import de.anomic.server.serverMemory;
import de.anomic.server.serverProfiling;
import de.anomic.server.logging.serverLog;
import de.anomic.tools.iso639;
import de.anomic.xml.RSSFeed;
import de.anomic.xml.RSSMessage;
import de.anomic.yacy.yacyNewsPool;
import de.anomic.yacy.yacyPeerActions;
import de.anomic.yacy.yacySeedDB;
import de.anomic.yacy.yacyURL;
public final class plasmaWordIndex implements indexRI {
// environment constants
public static final long wCacheMaxAge = 1000 * 60 * 30; // milliseconds; 30 minutes
public static final int wCacheMaxChunk = 800; // maximum number of references for each urlhash
public static final int lowcachedivisor = 900;
public static final int maxCollectionPartition = 7; // should be 7
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 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;
private final kelondroByteOrder indexOrder = kelondroBase64Order.enhancedCoder;
private final indexRAMRI dhtCache;
private final indexCollectionRI collections; // new database structure to replace AssortmentCluster and FileCluster
private final serverLog log;
private indexRepositoryReference referenceURL;
public final yacySeedDB seedDB;
public yacyNewsPool newsPool;
private final File primaryRoot, secondaryRoot;
public IndexingStack queuePreStack;
public CrawlProfile profilesActiveCrawls, profilesPassiveCrawls;
public CrawlProfile.entry defaultProxyProfile;
public CrawlProfile.entry defaultRemoteProfile;
public CrawlProfile.entry defaultTextSnippetLocalProfile, defaultTextSnippetGlobalProfile;
public CrawlProfile.entry defaultMediaSnippetLocalProfile, defaultMediaSnippetGlobalProfile;
private final File queuesRoot;
public yacyPeerActions peerActions;
public plasmaWordIndex(
final String networkName,
final serverLog log,
final File indexPrimaryRoot,
final File indexSecondaryRoot,
final int entityCacheMaxSize,
final boolean useCommons,
final int redundancy,
final int partitionExponent) {
if (networkName == null || networkName.length() == 0) {
log.logSevere("no network name given - shutting down");
System.exit(0);
}
this.log = log;
this.primaryRoot = new File(indexPrimaryRoot, networkName);
this.secondaryRoot = new File(indexSecondaryRoot, networkName);
File indexPrimaryTextLocation = new File(this.primaryRoot, "TEXT");
if (!indexPrimaryTextLocation.exists()) {
// patch old index locations; the secondary path is patched in plasmaCrawlLURL
final File oldPrimaryPath = new File(new File(indexPrimaryRoot, "PUBLIC"), "TEXT");
final File oldPrimaryTextLocation = new File(new File(indexPrimaryRoot, "PUBLIC"), "TEXT");
if (oldPrimaryPath.exists() && oldPrimaryTextLocation.exists()) {
// move the text folder from the old location to the new location
assert !indexPrimaryTextLocation.exists();
indexPrimaryTextLocation.mkdirs();
if (oldPrimaryTextLocation.renameTo(indexPrimaryTextLocation)) {
if (!oldPrimaryPath.delete()) oldPrimaryPath.deleteOnExit();
} else {
indexPrimaryTextLocation = oldPrimaryTextLocation; // emergency case: stay with old directory
}
}
}
final File textindexcache = new File(indexPrimaryTextLocation, "RICACHE");
if (!(textindexcache.exists())) textindexcache.mkdirs();
if (new File(textindexcache, "index.dhtin.blob").exists()) {
// migration of the both caches into one
this.dhtCache = new indexRAMRI(textindexcache, indexRWIRowEntry.urlEntryRow, entityCacheMaxSize, wCacheMaxChunk, wCacheMaxAge, "index.dhtout.blob", log);
indexRAMRI dhtInCache = new indexRAMRI(textindexcache, indexRWIRowEntry.urlEntryRow, entityCacheMaxSize, wCacheMaxChunk, wCacheMaxAge, "index.dhtin.blob", log);
for (indexContainer c: dhtInCache) {
this.dhtCache.addEntries(c);
}
new File(textindexcache, "index.dhtin.blob").delete();
} else {
// read in new BLOB
this.dhtCache = new indexRAMRI(textindexcache, indexRWIRowEntry.urlEntryRow, entityCacheMaxSize, wCacheMaxChunk, wCacheMaxAge, "index.dhtout.blob", log);
}
// create collections storage path
final File textindexcollections = new File(indexPrimaryTextLocation, "RICOLLECTION");
if (!(textindexcollections.exists())) textindexcollections.mkdirs();
this.collections = new indexCollectionRI(textindexcollections, "collection", maxCollectionPartition, indexRWIRowEntry.urlEntryRow, useCommons);
// create LURL-db
referenceURL = new indexRepositoryReference(this.secondaryRoot);
// make crawl profiles database and default profiles
this.queuesRoot = new File(this.primaryRoot, "QUEUES");
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) {
profilesActiveFile.delete();
try {
this.profilesActiveCrawls = new CrawlProfile(profilesActiveFile);
} catch (IOException e1) {
e1.printStackTrace();
this.profilesActiveCrawls = null;
}
}
initActiveCrawlProfiles();
log.logConfig("Loaded active crawl profiles from file " + profilesActiveFile.getName() +
", " + this.profilesActiveCrawls.size() + " entries" +
", " + profilesActiveFile.length()/1024);
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) {
profilesPassiveFile.delete();
try {
this.profilesPassiveCrawls = new CrawlProfile(profilesPassiveFile);
} catch (IOException e1) {
e1.printStackTrace();
this.profilesPassiveCrawls = null;
}
}
log.logConfig("Loaded passive crawl profiles from file " + profilesPassiveFile.getName() +
", " + this.profilesPassiveCrawls.size() + " entries" +
", " + profilesPassiveFile.length()/1024);
// init queues
final File preStackFile = new File(queuesRoot, "urlNoticePreStack");
if (!preStackFile.exists()) {
// migrate old file
final File oldFile = new File(new File(queuesRoot.getParentFile().getParentFile().getParentFile(), "PLASMADB"), "switchboardQueue.stack");
if (oldFile.exists()) oldFile.renameTo(preStackFile);
}
this.queuePreStack = new IndexingStack(this, preStackFile, this.profilesActiveCrawls);
// create or init seed cache
final File networkRoot = new File(this.primaryRoot, "NETWORK");
networkRoot.mkdirs();
final File mySeedFile = new File(networkRoot, yacySeedDB.DBFILE_OWN_SEED);
final File oldSeedFile = new File(new File(indexPrimaryRoot.getParentFile(), "YACYDB"), "mySeed.txt");
if (oldSeedFile.exists()) oldSeedFile.renameTo(mySeedFile);
seedDB = new yacySeedDB(
new File(networkRoot, "seed.new.heap"),
new File(networkRoot, "seed.old.heap"),
new File(networkRoot, "seed.pot.heap"),
mySeedFile,
redundancy,
partitionExponent
);
// create or init news database
newsPool = new yacyNewsPool(networkRoot);
// deploy peer actions
this.peerActions = new yacyPeerActions(seedDB, newsPool);
}
public void clearCache() {
referenceURL.clearCache();
}
public void clear() {
dhtCache.clear();
collections.clear();
try {
referenceURL.clear();
} catch (final IOException e) {
e.printStackTrace();
}
queuePreStack.clear();
}
private void initActiveCrawlProfiles() {
this.defaultProxyProfile = null;
this.defaultRemoteProfile = null;
this.defaultTextSnippetLocalProfile = null;
this.defaultTextSnippetGlobalProfile = null;
this.defaultMediaSnippetLocalProfile = null;
this.defaultMediaSnippetGlobalProfile = 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;
}
} 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;
}
if (this.defaultProxyProfile == null) {
// generate new default entry for proxy crawling
this.defaultProxyProfile = this.profilesActiveCrawls.newEntry("proxy", null, CrawlProfile.KEYWORDS_PROXY, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER,
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);
}
if (this.defaultRemoteProfile == null) {
// generate new default entry for remote crawling
defaultRemoteProfile = this.profilesActiveCrawls.newEntry(CRAWL_PROFILE_REMOTE, null, CrawlProfile.KEYWORDS_REMOTE, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
-1, -1, -1, true, true, true, false, true, false, true, true, false);
}
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.KEYWORDS_SNIPPET, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SNIPPET_LOCAL_TEXT_RECRAWL_CYCLE), -1, -1, true, false, false, false, false, false, true, true, false);
}
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.KEYWORDS_SNIPPET, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SNIPPET_GLOBAL_TEXT_RECRAWL_CYCLE), -1, -1, true, true, true, true, true, false, true, true, false);
}
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.KEYWORDS_SNIPPET, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SNIPPET_LOCAL_MEDIA_RECRAWL_CYCLE), -1, -1, true, false, false, false, false, false, true, true, false);
}
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.KEYWORDS_SNIPPET, CrawlProfile.MATCH_ALL, CrawlProfile.MATCH_NEVER, 0,
this.profilesActiveCrawls.getRecrawlDate(CRAWL_PROFILE_SNIPPET_GLOBAL_MEDIA_RECRAWL_CYCLE), -1, -1, true, false, true, true, true, false, true, true, false);
}
}
private void resetProfiles() {
final File pdb = new File(this.queuesRoot, DBFILE_ACTIVE_CRAWL_PROFILES);
if (pdb.exists()) pdb.delete();
try {
profilesActiveCrawls = new CrawlProfile(pdb);
} catch (IOException e) {
e.printStackTrace();
}
initActiveCrawlProfiles();
}
public boolean cleanProfiles() throws InterruptedException {
if (queuePreStack.size() > 0) return false;
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)))) {
profilesPassiveCrawls.newEntry(entry.map());
iter.remove();
hasDoneSomething = true;
}
}
} catch (final kelondroException e) {
resetProfiles();
hasDoneSomething = true;
}
return hasDoneSomething;
}
public File getLocation(final boolean primary) {
return (primary) ? this.primaryRoot : this.secondaryRoot;
}
public void putURL(final indexURLReference entry) throws IOException {
this.referenceURL.store(entry);
}
public indexURLReference getURL(final String urlHash, final indexRWIEntry searchedWord, final long ranking) {
return this.referenceURL.load(urlHash, searchedWord, ranking);
}
public boolean removeURL(final String urlHash) {
return this.referenceURL.remove(urlHash);
}
public boolean existsURL(final String urlHash) {
return this.referenceURL.exists(urlHash);
}
public int countURL() {
return this.referenceURL.size();
}
public Export exportURL(final File f, final String filter, final int format, final boolean dom) {
return this.referenceURL.export(f, filter, format, dom);
}
public Export exportURL() {
return this.referenceURL.export();
}
public kelondroCloneableIterator<indexURLReference> entriesURL(final boolean up, final String firstHash) throws IOException {
return this.referenceURL.entries(up, firstHash);
}
public Iterator<indexRepositoryReference.hostStat> statistics(int count) throws IOException {
return this.referenceURL.statistics(count);
}
public int deleteDomain(String urlfragment) throws IOException {
return this.referenceURL.deleteDomain(urlfragment);
}
public indexRepositoryReference.BlacklistCleaner getURLCleaner(final indexReferenceBlacklist blacklist) {
return this.referenceURL.getBlacklistCleaner(blacklist); // thread is not already started after this is called!
}
public int getURLwriteCacheSize() {
return this.referenceURL.writeCacheSize();
}
public int minMem() {
return 1024*1024 /* indexing overhead */ + dhtCache.minMem() + collections.minMem();
}
public int maxURLinDHTCache() {
return dhtCache.maxURLinCache();
}
public long minAgeOfDHTCache() {
return dhtCache.minAgeOfCache();
}
public long maxAgeOfDHTCache() {
return dhtCache.maxAgeOfCache();
}
public int dhtCacheSize() {
return dhtCache.size();
}
public long dhtCacheSizeBytes() {
// calculate the real size in bytes of DHT-In/Out-Cache
long cacheBytes = 0;
final long entryBytes = indexRWIRowEntry.urlEntryRow.objectsize;
final indexRAMRI cache = (dhtCache);
synchronized (cache) {
final Iterator<indexContainer> it = cache.wordContainers(null, false);
while (it.hasNext()) cacheBytes += it.next().size() * entryBytes;
}
return cacheBytes;
}
public void setMaxWordCount(final int maxWords) {
dhtCache.setMaxWordCount(maxWords);
}
public void dhtFlushControl(final indexRAMRI theCache) {
// check for forced flush
int cs = cacheSize();
if (cs > 0) {
// flush elements that are too big. This flushing depends on the fact that the flush rule
// selects the biggest elements first for flushing. If it does not for any reason, the following
// loop would not terminate.
serverProfiling.update("wordcache", Long.valueOf(cs));
// To ensure termination an additional counter is used
int l = 0;
while (theCache.size() > 0 && (l++ < 100) && (theCache.maxURLinCache() > wCacheMaxChunk)) {
flushCacheOne(theCache);
}
// next flush more entries if the size exceeds the maximum size of the cache
while (theCache.size() > 0 &&
((theCache.size() > theCache.getMaxWordCount()) ||
(serverMemory.available() < collections.minMem()))) {
flushCacheOne(theCache);
}
if (cacheSize() != cs) serverProfiling.update("wordcache", Long.valueOf(cacheSize()));
}
}
public static indexContainer emptyContainer(final String wordHash, final int elementCount) {
return new indexContainer(wordHash, indexRWIRowEntry.urlEntryRow, elementCount);
}
public void addEntry(final String wordHash, final indexRWIRowEntry entry, final long updateTime) {
// add the entry
dhtCache.addEntry(wordHash, entry, updateTime, true);
dhtFlushControl(this.dhtCache);
}
public void addEntries(final indexContainer entries) {
assert (entries.row().objectsize == indexRWIRowEntry.urlEntryRow.objectsize);
// add the entry
dhtCache.addEntries(entries);
dhtFlushControl(this.dhtCache);
}
public void flushCacheFor(int time) {
flushCacheUntil(System.currentTimeMillis() + time);
}
private synchronized void flushCacheUntil(long timeout) {
while (System.currentTimeMillis() < timeout && dhtCache.size() > 0) {
flushCacheOne(dhtCache);
}
}
private synchronized void flushCacheOne(final indexRAMRI ram) {
if (ram.size() > 0) collections.addEntries(flushContainer(ram));
}
private indexContainer flushContainer(final indexRAMRI ram) {
String wordHash;
indexContainer c;
wordHash = ram.maxScoreWordHash();
c = ram.getContainer(wordHash, null);
if ((c != null) && (c.size() > wCacheMaxChunk)) {
return ram.deleteContainer(wordHash);
} else {
return ram.deleteContainer(ram.bestFlushWordHash());
}
}
/**
* this is called by the switchboard to put in a new page into the index
* use all the words in one condenser object to simultanous create index entries
*
* @param url
* @param urlModified
* @param document
* @param condenser
* @param language
* @param doctype
* @param outlinksSame
* @param outlinksOther
* @return
*/
public int addPageIndex(final yacyURL url, final Date urlModified, final plasmaParserDocument document, final plasmaCondenser condenser, final String language, final char doctype, final int outlinksSame, final int outlinksOther) {
int wordCount = 0;
final int urlLength = url.toNormalform(true, true).length();
final int urlComps = htmlFilterContentScraper.urlComps(url.toString()).length;
// iterate over all words of context text
final Iterator<Map.Entry<String, indexWord>> i = condenser.words().entrySet().iterator();
Map.Entry<String, indexWord> wentry;
String word;
indexRWIRowEntry ientry;
indexWord wprop;
while (i.hasNext()) {
wentry = i.next();
word = wentry.getKey();
wprop = wentry.getValue();
assert (wprop.flags != null);
ientry = new indexRWIRowEntry(url.hash(),
urlLength, urlComps, (document == null) ? urlLength : document.dc_title().length(),
wprop.count,
condenser.RESULT_NUMB_WORDS,
condenser.RESULT_NUMB_SENTENCES,
wprop.posInText,
wprop.posInPhrase,
wprop.numOfPhrase,
urlModified.getTime(),
System.currentTimeMillis(),
language,
doctype,
outlinksSame, outlinksOther,
wprop.flags);
addEntry(indexWord.word2hash(word), ientry, System.currentTimeMillis());
wordCount++;
}
return wordCount;
}
public boolean hasContainer(final String wordHash) {
if (dhtCache.hasContainer(wordHash)) return true;
if (collections.hasContainer(wordHash)) return true;
return false;
}
public indexContainer getContainer(final String wordHash, final Set<String> urlselection) {
if ((wordHash == null) || (wordHash.length() != yacySeedDB.commonHashLength)) {
// wrong input
return null;
}
// get from cache
indexContainer container;
container = dhtCache.getContainer(wordHash, urlselection);
// get from collection index
if (container == null) {
container = collections.getContainer(wordHash, urlselection);
} else {
container.addAllUnique(collections.getContainer(wordHash, urlselection));
}
if (container == null) return null;
// check doubles
final int beforeDouble = container.size();
final ArrayList<kelondroRowCollection> d = container.removeDoubles();
kelondroRowCollection set;
for (int i = 0; i < d.size(); i++) {
// for each element in the double-set, take that one that is the most recent one
set = d.get(i);
indexRWIRowEntry e, elm = null;
long lm = 0;
for (int j = 0; j < set.size(); j++) {
e = new indexRWIRowEntry(set.get(j, true));
if ((elm == null) || (e.lastModified() > lm)) {
elm = e;
lm = e.lastModified();
}
}
if(elm != null) {
container.addUnique(elm.toKelondroEntry());
}
}
if (container.size() < beforeDouble) System.out.println("*** DEBUG DOUBLECHECK - removed " + (beforeDouble - container.size()) + " index entries from word container " + container.getWordHash());
return container;
}
/**
* return map of wordhash:indexContainer
*
* @param wordHashes
* @param urlselection
* @param deleteIfEmpty
* @param interruptIfEmpty
* @return
*/
public HashMap<String, indexContainer> getContainers(final Set<String> wordHashes, final Set<String> urlselection, final boolean interruptIfEmpty) {
// retrieve entities that belong to the hashes
final HashMap<String, indexContainer> containers = new HashMap<String, indexContainer>(wordHashes.size());
String singleHash;
indexContainer singleContainer;
final Iterator<String> i = wordHashes.iterator();
while (i.hasNext()) {
// get next word hash:
singleHash = i.next();
// retrieve index
singleContainer = getContainer(singleHash, urlselection);
// check result
if (((singleContainer == null) || (singleContainer.size() == 0)) && (interruptIfEmpty)) return new HashMap<String, indexContainer>(0);
containers.put(singleHash, singleContainer);
}
return containers;
}
@SuppressWarnings("unchecked")
public HashMap<String, indexContainer>[] localSearchContainers(final plasmaSearchQuery query, final Set<String> urlselection) {
// search for the set of hashes and return a map of of wordhash:indexContainer containing the seach result
// retrieve entities that belong to the hashes
HashMap<String, indexContainer> inclusionContainers = (query.queryHashes.size() == 0) ? new HashMap<String, indexContainer>(0) : getContainers(
query.queryHashes,
urlselection,
true);
if ((inclusionContainers.size() != 0) && (inclusionContainers.size() < query.queryHashes.size())) inclusionContainers = new HashMap<String, indexContainer>(0); // prevent that only a subset is returned
final HashMap<String, indexContainer> exclusionContainers = (inclusionContainers.size() == 0) ? new HashMap<String, indexContainer>(0) : getContainers(
query.excludeHashes,
urlselection,
true);
return new HashMap[]{inclusionContainers, exclusionContainers};
}
public int size() {
return java.lang.Math.max(collections.size(), dhtCache.size());
}
public int collectionsSize() {
return collections.size();
}
public int cacheSize() {
return dhtCache.size();
}
public void close() {
dhtCache.close();
collections.close();
referenceURL.close();
seedDB.close();
newsPool.close();
profilesActiveCrawls.close();
queuePreStack.close();
peerActions.close();
}
public indexContainer deleteContainer(final String wordHash) {
final indexContainer c = new indexContainer(
wordHash,
indexRWIRowEntry.urlEntryRow,
dhtCache.sizeContainer(wordHash));
c.addAllUnique(dhtCache.deleteContainer(wordHash));
c.addAllUnique(collections.deleteContainer(wordHash));
return c;
}
public boolean removeEntry(final String wordHash, final String urlHash) {
boolean removed = false;
removed = removed | (dhtCache.removeEntry(wordHash, urlHash));
removed = removed | (collections.removeEntry(wordHash, urlHash));
return removed;
}
public int removeEntryMultiple(final Set<String> wordHashes, final String urlHash) {
// remove the same url hashes for multiple words
// this is mainly used when correcting a index after a search
final Iterator<String> i = wordHashes.iterator();
int count = 0;
while (i.hasNext()) {
if (removeEntry(i.next(), urlHash)) count++;
}
return count;
}
public int removeEntries(final String wordHash, final Set<String> urlHashes) {
int removed = 0;
removed += dhtCache.removeEntries(wordHash, urlHashes);
removed += collections.removeEntries(wordHash, urlHashes);
return removed;
}
public String removeEntriesExpl(final String wordHash, final Set<String> urlHashes) {
String removed = "";
removed += dhtCache.removeEntries(wordHash, urlHashes) + ", ";
removed += collections.removeEntries(wordHash, urlHashes);
return removed;
}
public void removeEntriesMultiple(final Set<String> wordHashes, final Set<String> urlHashes) {
// remove the same url hashes for multiple words
// this is mainly used when correcting a index after a search
final Iterator<String> i = wordHashes.iterator();
while (i.hasNext()) {
removeEntries(i.next(), urlHashes);
}
}
public int removeWordReferences(final Set<String> words, final String urlhash) {
// sequentially delete all word references
// returns number of deletions
final Iterator<String> iter = words.iterator();
int count = 0;
while (iter.hasNext()) {
// delete the URL reference in this word index
if (removeEntry(indexWord.word2hash(iter.next()), urlhash)) count++;
}
return count;
}
public synchronized TreeSet<indexContainer> indexContainerSet(final String startHash, final boolean ram, final boolean rot, int count) {
// creates a set of indexContainers
// this does not use the dhtInCache
final kelondroOrder<indexContainer> containerOrder = new indexContainerOrder(indexOrder.clone());
containerOrder.rotate(emptyContainer(startHash, 0));
final TreeSet<indexContainer> containers = new TreeSet<indexContainer>(containerOrder);
final Iterator<indexContainer> i = wordContainers(startHash, ram, rot);
if (ram) count = Math.min(dhtCache.size(), count);
indexContainer container;
// this loop does not terminate using the i.hasNex() predicate when rot == true
// because then the underlying iterator is a rotating iterator without termination
// in this case a termination must be ensured with a counter
// It must also be ensured that the counter is in/decreased every loop
while ((count > 0) && (i.hasNext())) {
container = i.next();
if ((container != null) && (container.size() > 0)) {
containers.add(container);
}
count--; // decrease counter even if the container was null or empty to ensure termination
}
return containers; // this may return less containers as demanded
}
public indexURLReference storeDocument(final IndexingStack.QueueEntry entry, final plasmaParserDocument document, final plasmaCondenser condenser) throws IOException {
final long startTime = System.currentTimeMillis();
// CREATE INDEX
// load some document metadata
final String dc_title = document.dc_title();
final yacyURL referrerURL = entry.referrerURL();
final Date docDate = entry.getModificationDate();
// do a identification of the language
String language = condenser.language(); // this is a statistical analysation of the content: will be compared with other attributes
String bymetadata = document.languageByMetadata(); // the languageByMetadata may return null if there was no declaration
if (language == null) {
// no statistics available, we take either the metadata (if given) or the TLD
language = (bymetadata == null) ? entry.url().language() : bymetadata;
System.out.println("*** DEBUG LANGUAGE-BY-STATISTICS: " + entry.url() + " FAILED, taking " + ((bymetadata == null) ? "TLD" : "metadata") + ": " + language);
} else {
if (bymetadata == null) {
// two possible results: compare and report conflicts
if (language.equals(entry.url().language()))
System.out.println("*** DEBUG LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFIRMED - TLD IDENTICAL: " + language);
else {
String error = "*** DEBUG LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFLICTING: " + language + " (the language given by the TLD is " + entry.url().language() + ")";
// see if we have a hint in the url that the statistic was right
String u = entry.url().toNormalform(true, false).toLowerCase();
if (!u.contains("/" + language + "/") && !u.contains("/" + iso639.country(language).toLowerCase() + "/")) {
// no confirmation using the url, use the TLD
language = entry.url().language();
System.out.println(error + ", corrected using the TLD");
} else {
// this is a strong hint that the statistics was in fact correct
System.out.println(error + ", but the url proves that the statistic is correct");
}
}
} else {
// here we have three results: we can do a voting
if (language.equals(bymetadata)) {
System.out.println("*** DEBUG LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFIRMED - METADATA IDENTICAL: " + language);
} else if (language.equals(entry.url().language())) {
System.out.println("*** DEBUG LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFIRMED - TLD IS IDENTICAL: " + language);
} else if (bymetadata.equals(entry.url().language())) {
System.out.println("*** DEBUG LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFLICTING: " + language + " BUT METADATA AND TLD ARE IDENTICAL: " + bymetadata + ")");
language = bymetadata;
} else {
System.out.println("*** DEBUG LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFLICTING: ALL DIFFERENT! statistic: " + language + ", metadata: " + bymetadata + ", TLD: + " + entry.url().language() + ". taking metadata.");
language = bymetadata;
}
}
}
// create a new loaded URL db entry
final long ldate = System.currentTimeMillis();
final indexURLReference newEntry = new indexURLReference(
entry.url(), // URL
dc_title, // document description
document.dc_creator(), // author
document.dc_subject(' '), // tags
"", // ETag
docDate, // modification date
new Date(), // loaded date
new Date(ldate + Math.max(0, ldate - docDate.getTime()) / 2), // freshdate, computed with Proxy-TTL formula
(referrerURL == null) ? null : referrerURL.hash(), // referer hash
new byte[0], // md5
(int) entry.size(), // size
condenser.RESULT_NUMB_WORDS, // word count
httpdProxyCacheEntry.docType(document.dc_format()), // doctype
condenser.RESULT_FLAGS, // flags
language, // language
document.inboundLinks(), // inbound links
document.outboundLinks(), // outbound links
document.getAudiolinks().size(), // laudio
document.getImages().size(), // limage
document.getVideolinks().size(), // lvideo
document.getApplinks().size() // lapp
);
// STORE URL TO LOADED-URL-DB
putURL(newEntry);
final long storageEndTime = System.currentTimeMillis();
// STORE PAGE INDEX INTO WORD INDEX DB
final int words = addPageIndex(
entry.url(), // document url
docDate, // document mod date
document, // document content
condenser, // document condenser
language, // document language
httpdProxyCacheEntry.docType(document.dc_format()), // document type
document.inboundLinks(), // inbound links
document.outboundLinks() // outbound links
);
final long indexingEndTime = System.currentTimeMillis();
if (log.isInfo()) {
// TODO: UTF-8 docDescription seems not to be displayed correctly because
// of string concatenation
log.logInfo("*Indexed " + words + " words in URL " + entry.url() +
" [" + entry.urlHash() + "]" +
"\n\tDescription: " + dc_title +
"\n\tMimeType: " + document.dc_format() + " | Charset: " + document.getCharset() + " | " +
"Size: " + document.getTextLength() + " bytes | " +
"Anchors: " + ((document.getAnchors() == null) ? 0 : document.getAnchors().size()) +
"\n\tLinkStorageTime: " + (storageEndTime - startTime) + " ms | " +
"indexStorageTime: " + (indexingEndTime - storageEndTime) + " ms");
RSSFeed.channels((entry.initiator().equals(seedDB.mySeed().hash)) ? RSSFeed.LOCALINDEXING : RSSFeed.REMOTEINDEXING).addMessage(new RSSMessage("Indexed web page", dc_title, entry.url().toNormalform(true, false)));
}
// finished
return newEntry;
}
public synchronized kelondroCloneableIterator<indexContainer> wordContainers(final String startHash, final boolean ram, final boolean rot) {
final kelondroCloneableIterator<indexContainer> i = wordContainers(startHash, ram);
if (rot) {
return new kelondroRotateIterator<indexContainer>(i, new String(kelondroBase64Order.zero(startHash.length())), dhtCache.size() + ((ram) ? 0 : collections.size()));
}
return i;
}
public synchronized kelondroCloneableIterator<indexContainer> wordContainers(final String startWordHash, final boolean ram) {
final kelondroOrder<indexContainer> containerOrder = new indexContainerOrder(indexOrder.clone());
containerOrder.rotate(emptyContainer(startWordHash, 0));
if (ram) {
return dhtCache.wordContainers(startWordHash, false);
}
return new kelondroMergeIterator<indexContainer>(
dhtCache.wordContainers(startWordHash, false),
collections.wordContainers(startWordHash, false),
containerOrder,
indexContainer.containerMergeMethod,
true);
}
// The Cleaner class was provided as "UrldbCleaner" by Hydrox
public synchronized ReferenceCleaner getReferenceCleaner(final String startHash) {
return new ReferenceCleaner(startHash);
}
public class ReferenceCleaner extends Thread {
private final String startHash;
private boolean run = true;
private boolean pause = false;
public int rwiCountAtStart = 0;
public String wordHashNow = "";
public String lastWordHash = "";
public int lastDeletionCounter = 0;
public ReferenceCleaner(final String startHash) {
this.startHash = startHash;
this.rwiCountAtStart = size();
}
public void run() {
serverLog.logInfo("INDEXCLEANER", "IndexCleaner-Thread started");
indexContainer container = null;
indexRWIRowEntry entry = null;
yacyURL url = null;
final HashSet<String> urlHashs = new HashSet<String>();
Iterator<indexContainer> indexContainerIterator = indexContainerSet(startHash, false, false, 100).iterator();
while (indexContainerIterator.hasNext() && run) {
waiter();
container = indexContainerIterator.next();
final Iterator<indexRWIRowEntry> containerIterator = container.entries();
wordHashNow = container.getWordHash();
while (containerIterator.hasNext() && run) {
waiter();
entry = containerIterator.next();
// System.out.println("Wordhash: "+wordHash+" UrlHash:
// "+entry.getUrlHash());
final indexURLReference ue = referenceURL.load(entry.urlHash(), entry, 0);
if (ue == null) {
urlHashs.add(entry.urlHash());
} else {
url = ue.comp().url();
if ((url == null) || (plasmaSwitchboard.urlBlacklist.isListed(indexReferenceBlacklist.BLACKLIST_CRAWLER, url) == true)) {
urlHashs.add(entry.urlHash());
}
}
}
if (urlHashs.size() > 0) {
final int removed = removeEntries(container.getWordHash(), urlHashs);
serverLog.logFine("INDEXCLEANER", container.getWordHash() + ": " + removed + " of " + container.size() + " URL-entries deleted");
lastWordHash = container.getWordHash();
lastDeletionCounter = urlHashs.size();
urlHashs.clear();
}
if (!containerIterator.hasNext()) {
// We may not be finished yet, try to get the next chunk of wordHashes
final TreeSet<indexContainer> containers = indexContainerSet(container.getWordHash(), false, false, 100);
indexContainerIterator = containers.iterator();
// Make sure we don't get the same wordhash twice, but don't skip a word
if ((indexContainerIterator.hasNext()) && (!container.getWordHash().equals(indexContainerIterator.next().getWordHash()))) {
indexContainerIterator = containers.iterator();
}
}
}
serverLog.logInfo("INDEXCLEANER", "IndexCleaner-Thread stopped");
}
public void abort() {
synchronized(this) {
run = false;
this.notifyAll();
}
}
public void pause() {
synchronized (this) {
if (!pause) {
pause = true;
serverLog.logInfo("INDEXCLEANER", "IndexCleaner-Thread paused");
}
}
}
public void endPause() {
synchronized (this) {
if (pause) {
pause = false;
this.notifyAll();
serverLog.logInfo("INDEXCLEANER", "IndexCleaner-Thread resumed");
}
}
}
public void waiter() {
synchronized (this) {
if (this.pause) {
try {
this.wait();
} catch (final InterruptedException e) {
this.run = false;
return;
}
}
}
}
}
}