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660 lines
27 KiB
660 lines
27 KiB
// plasmaWordIndex.java
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// (C) 2005, 2006 by Michael Peter Christen; mc@anomic.de, 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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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy: $
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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.plasma;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Set;
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import java.util.TreeSet;
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import de.anomic.htmlFilter.htmlFilterContentScraper;
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import de.anomic.index.indexCollectionRI;
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import de.anomic.index.indexContainer;
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import de.anomic.index.indexContainerOrder;
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import de.anomic.index.indexRAMRI;
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import de.anomic.index.indexRI;
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import de.anomic.index.indexRWIEntry;
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import de.anomic.index.indexURLEntry;
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import de.anomic.kelondro.kelondroBase64Order;
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import de.anomic.kelondro.kelondroCloneableIterator;
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import de.anomic.kelondro.kelondroMergeIterator;
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import de.anomic.kelondro.kelondroOrder;
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import de.anomic.kelondro.kelondroRotateIterator;
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import de.anomic.net.URL;
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import de.anomic.plasma.urlPattern.plasmaURLPattern;
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import de.anomic.server.logging.serverLog;
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import de.anomic.server.serverMemory;
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import de.anomic.yacy.yacyDHTAction;
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public final class plasmaWordIndex implements indexRI {
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// environment constants
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public static final long wCacheMaxAge = 1000 * 60 * 30; // milliseconds; 30 minutes
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public static final int wCacheMaxChunk = 1000; // number of references for each urlhash
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public static final int lowcachedivisor = 200;
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public static final int maxCollectionPartition = 7; // should be 7
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private final kelondroOrder indexOrder = kelondroBase64Order.enhancedCoder;
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private final indexRAMRI dhtOutCache, dhtInCache;
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private final indexCollectionRI collections; // new database structure to replace AssortmentCluster and FileCluster
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public boolean busyCacheFlush; // shows if a cache flush is currently performed
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private int flushsize;
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public final plasmaCrawlLURL loadedURL;
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public plasmaWordIndex(File indexPrimaryRoot, File indexSecondaryRoot, long preloadTime, serverLog log) {
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File textindexcache = new File(indexPrimaryRoot, "PUBLIC/TEXT/RICACHE");
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if (!(textindexcache.exists())) textindexcache.mkdirs();
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this.dhtOutCache = new indexRAMRI(textindexcache, indexRWIEntry.urlEntryRow, wCacheMaxChunk, wCacheMaxAge, "dump1.array", log);
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this.dhtInCache = new indexRAMRI(textindexcache, indexRWIEntry.urlEntryRow, wCacheMaxChunk, wCacheMaxAge, "dump2.array", log);
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// create collections storage path
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File textindexcollections = new File(indexPrimaryRoot, "PUBLIC/TEXT/RICOLLECTION");
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if (!(textindexcollections.exists())) textindexcollections.mkdirs();
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this.collections = new indexCollectionRI(textindexcollections, "collection", preloadTime, maxCollectionPartition, indexRWIEntry.urlEntryRow);
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// create LURL-db
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loadedURL = new plasmaCrawlLURL(indexSecondaryRoot, preloadTime);
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// performance settings
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busyCacheFlush = false;
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this.flushsize = 2000;
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}
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public int minMem() {
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return 2*1024*1024 /* indexing overhead */ + dhtOutCache.minMem() + dhtInCache.minMem() + collections.minMem();
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}
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public int maxURLinDHTOutCache() {
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return dhtOutCache.maxURLinCache();
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}
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public long minAgeOfDHTOutCache() {
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return dhtOutCache.minAgeOfCache();
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}
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public long maxAgeOfDHTOutCache() {
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return dhtOutCache.maxAgeOfCache();
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}
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public int maxURLinDHTInCache() {
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return dhtInCache.maxURLinCache();
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}
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public long minAgeOfDHTInCache() {
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return dhtInCache.minAgeOfCache();
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}
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public long maxAgeOfDHTInCache() {
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return dhtInCache.maxAgeOfCache();
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}
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public int dhtOutCacheSize() {
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return dhtOutCache.size();
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}
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public int dhtInCacheSize() {
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return dhtInCache.size();
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}
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public void setMaxWordCount(int maxWords) {
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dhtOutCache.setMaxWordCount(maxWords);
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}
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public void setInMaxWordCount(int maxWords) {
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dhtInCache.setMaxWordCount(maxWords);
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}
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public void setWordFlushSize(int flushsize) {
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this.flushsize = flushsize;
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}
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public void dhtOutFlushControl() {
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// check for forced flush
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synchronized (dhtOutCache) {
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if ((dhtOutCache.getMaxWordCount() > wCacheMaxChunk ) ||
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(dhtOutCache.size() > dhtOutCache.getMaxWordCount()) ||
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(serverMemory.available() < collections.minMem())) {
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flushCache(dhtOutCache, dhtOutCache.size() + flushsize - dhtOutCache.getMaxWordCount());
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}
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}
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}
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public void dhtInFlushControl() {
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// check for forced flush
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synchronized (dhtInCache) {
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if ((dhtInCache.getMaxWordCount() > wCacheMaxChunk ) ||
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(dhtInCache.size() > dhtInCache.getMaxWordCount())||
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(serverMemory.available() < collections.minMem())) {
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flushCache(dhtInCache, dhtInCache.size() + flushsize - dhtInCache.getMaxWordCount());
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}
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}
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}
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public long getUpdateTime(String wordHash) {
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indexContainer entries = getContainer(wordHash, null, -1);
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if (entries == null) return 0;
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return entries.updated();
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}
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public indexContainer emptyContainer(String wordHash) {
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return new indexContainer(wordHash, indexRWIEntry.urlEntryRow);
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}
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public void addEntry(String wordHash, indexRWIEntry entry, long updateTime, boolean dhtInCase) {
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// set dhtInCase depending on wordHash
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if ((!dhtInCase) && (yacyDHTAction.shallBeOwnWord(wordHash))) dhtInCase = true;
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// add the entry
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if (dhtInCase) synchronized (dhtInCache) {
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dhtInCache.addEntry(wordHash, entry, updateTime, true);
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dhtInFlushControl();
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} else synchronized (dhtOutCache) {
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dhtOutCache.addEntry(wordHash, entry, updateTime, false);
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dhtOutFlushControl();
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}
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}
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public void addEntries(indexContainer entries, long updateTime, boolean dhtInCase) {
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assert (entries.row().objectsize() == indexRWIEntry.urlEntryRow.objectsize());
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// set dhtInCase depending on wordHash
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if ((!dhtInCase) && (yacyDHTAction.shallBeOwnWord(entries.getWordHash()))) dhtInCase = true;
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// add the entry
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if (dhtInCase) synchronized (dhtInCache) {
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dhtInCache.addEntries(entries, updateTime, true);
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dhtInFlushControl();
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} else synchronized (dhtOutCache) {
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dhtOutCache.addEntries(entries, updateTime, false);
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dhtOutFlushControl();
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}
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}
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public void flushCacheSome() {
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synchronized (dhtOutCache) {
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flushCache(dhtOutCache, (dhtOutCache.size() > 3 * flushsize) ? flushsize : Math.min(flushsize, Math.max(1, dhtOutCache.size() / lowcachedivisor)));
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}
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synchronized (dhtInCache) {
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flushCache(dhtInCache, (dhtInCache.size() > 3 * flushsize) ? flushsize : Math.min(flushsize, Math.max(1, dhtInCache.size() / lowcachedivisor)));
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}
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}
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private void flushCache(indexRAMRI ram, int count) {
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if (ram.size() <= count) count = ram.size();
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if (count <= 0) return;
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if (count > 5000) count = 5000;
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busyCacheFlush = true;
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String wordHash;
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ArrayList containerList = new ArrayList();
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synchronized (this) {
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boolean collectMax = true;
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indexContainer c;
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while (collectMax) {
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wordHash = ram.maxScoreWordHash();
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c = ram.getContainer(wordHash, null, -1);
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if ((c != null) && (c.size() > wCacheMaxChunk)) {
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containerList.add(ram.deleteContainer(wordHash));
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if (serverMemory.available() < collections.minMem()) break; // protect memory during flush
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} else {
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collectMax = false;
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}
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}
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count = count - containerList.size();
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for (int i = 0; i < count; i++) { // possible position of outOfMemoryError ?
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if (ram.size() == 0) break;
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if (serverMemory.available() < collections.minMem()) break; // protect memory during flush
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// select one word to flush
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wordHash = ram.bestFlushWordHash();
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// move one container from ram to flush list
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c = ram.deleteContainer(wordHash);
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if (c != null) containerList.add(c);
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}
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}
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// flush the containers
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collections.addMultipleEntries(containerList);
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//System.out.println("DEBUG-Finished flush of " + count + " entries from RAM to DB in " + (System.currentTimeMillis() - start) + " milliseconds");
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busyCacheFlush = false;
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}
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private static final int hour = 3600000;
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private static final int day = 86400000;
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public static int microDateDays(Date modified) {
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return microDateDays(modified.getTime());
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}
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public static int microDateDays(long modified) {
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// this calculates a virtual age from a given date
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// the purpose is to have an age in days of a given modified date
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// from a fixed standpoint in the past
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// one day has 60*60*24 seconds = 86400 seconds
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// we take mod 64**3 = 262144, this is the mask of the storage
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return (int) ((modified / day) % 262144);
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}
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public static String microDateHoursStr(long time) {
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return kelondroBase64Order.enhancedCoder.encodeLong(microDateHoursInt(time), 3);
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}
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public static int microDateHoursInt(long time) {
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return (int) ((time / hour) % 262144);
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}
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public static int microDateHoursAge(String mdhs) {
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return microDateHoursInt(System.currentTimeMillis()) - (int) kelondroBase64Order.enhancedCoder.decodeLong(mdhs);
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}
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public static long reverseMicroDateDays(int microDateDays) {
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return ((long) microDateDays) * ((long) day);
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}
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public int addPageIndex(URL url, String urlHash, Date urlModified, int size, plasmaParserDocument document, plasmaCondenser condenser, String language, char doctype, int outlinksSame, int outlinksOther) {
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// this is called by the switchboard to put in a new page into the index
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// use all the words in one condenser object to simultanous create index entries
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int wordCount = 0;
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int urlLength = url.toString().length();
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int urlComps = htmlFilterContentScraper.urlComps(url.toString()).length;
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// iterate over all words of context text
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Iterator i = condenser.words().entrySet().iterator();
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Map.Entry wentry;
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String word;
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indexRWIEntry ientry;
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plasmaCondenser.wordStatProp wprop;
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while (i.hasNext()) {
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wentry = (Map.Entry) i.next();
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word = (String) wentry.getKey();
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wprop = (plasmaCondenser.wordStatProp) wentry.getValue();
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assert (wprop.flags != null);
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ientry = new indexRWIEntry(urlHash,
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urlLength, urlComps, (document == null) ? urlLength : document.getTitle().length(),
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wprop.count,
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condenser.words().size(),
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condenser.sentences().size(),
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wprop.posInText,
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wprop.posInPhrase,
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wprop.numOfPhrase,
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0,
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size,
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urlModified.getTime(),
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System.currentTimeMillis(),
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language,
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doctype,
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outlinksSame, outlinksOther,
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wprop.flags);
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addEntry(plasmaCondenser.word2hash(word), ientry, System.currentTimeMillis(), false);
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wordCount++;
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}
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return wordCount;
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}
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public boolean hasContainer(String wordHash) {
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if (dhtOutCache.hasContainer(wordHash)) return true;
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if (dhtInCache.hasContainer(wordHash)) return true;
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if (collections.hasContainer(wordHash)) return true;
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return false;
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}
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public indexContainer getContainer(String wordHash, Set urlselection, long maxTime) {
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// get from cache
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indexContainer container;
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synchronized (dhtOutCache) {
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container = dhtOutCache.getContainer(wordHash, urlselection, -1);
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}
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synchronized (dhtInCache) {
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if (container == null) {
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container = dhtInCache.getContainer(wordHash, urlselection, -1);
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} else {
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container.addAllUnique(dhtInCache.getContainer(wordHash, urlselection, -1));
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}
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}
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// get from collection index
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if (container == null) {
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container = collections.getContainer(wordHash, urlselection, (maxTime < 0) ? -1 : maxTime);
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} else {
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container.addAllUnique(collections.getContainer(wordHash, urlselection, (maxTime < 0) ? -1 : maxTime));
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}
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return container;
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}
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public Map getContainers(Set wordHashes, Set urlselection, boolean deleteIfEmpty, boolean interruptIfEmpty, long maxTime) {
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// return map of wordhash:indexContainer
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// retrieve entities that belong to the hashes
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HashMap containers = new HashMap();
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String singleHash;
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indexContainer singleContainer;
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Iterator i = wordHashes.iterator();
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long start = System.currentTimeMillis();
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long remaining;
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while (i.hasNext()) {
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// check time
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remaining = maxTime - (System.currentTimeMillis() - start);
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//if ((maxTime > 0) && (remaining <= 0)) break;
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if ((maxTime >= 0) && (remaining <= 0)) remaining = 100;
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// get next word hash:
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singleHash = (String) i.next();
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// retrieve index
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singleContainer = getContainer(singleHash, urlselection, (maxTime < 0) ? -1 : remaining / (wordHashes.size() - containers.size()));
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// check result
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if (((singleContainer == null) || (singleContainer.size() == 0)) && (interruptIfEmpty)) return new HashMap();
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containers.put(singleHash, singleContainer);
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}
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return containers;
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}
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public int size() {
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return java.lang.Math.max(collections.size(), java.lang.Math.max(dhtInCache.size(), dhtOutCache.size()));
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}
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public int indexSize(String wordHash) {
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int size = 0;
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size += dhtInCache.indexSize(wordHash);
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size += dhtOutCache.indexSize(wordHash);
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size += collections.indexSize(wordHash);
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return size;
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}
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public void close() {
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synchronized (this) {
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dhtInCache.close();
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dhtOutCache.close();
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collections.close();
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loadedURL.close();
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}
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}
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public indexContainer deleteContainer(String wordHash) {
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indexContainer c = new indexContainer(wordHash, indexRWIEntry.urlEntryRow);
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synchronized (dhtInCache) {
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c.addAllUnique(dhtInCache.deleteContainer(wordHash));
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}
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synchronized (dhtOutCache) {
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c.addAllUnique(dhtOutCache.deleteContainer(wordHash));
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}
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c.addAllUnique(collections.deleteContainer(wordHash));
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return c;
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}
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public boolean removeEntry(String wordHash, String urlHash) {
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boolean removed = false;
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synchronized (dhtInCache) {
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removed = removed | (dhtInCache.removeEntry(wordHash, urlHash));
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}
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synchronized (dhtOutCache) {
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removed = removed | (dhtOutCache.removeEntry(wordHash, urlHash));
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}
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removed = removed | (collections.removeEntry(wordHash, urlHash));
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return removed;
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}
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public int removeEntries(String wordHash, Set urlHashes) {
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int removed = 0;
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synchronized (dhtInCache) {
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removed += dhtInCache.removeEntries(wordHash, urlHashes);
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}
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synchronized (dhtOutCache) {
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removed += dhtOutCache.removeEntries(wordHash, urlHashes);
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}
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removed += collections.removeEntries(wordHash, urlHashes);
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return removed;
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}
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public String removeEntriesExpl(String wordHash, Set urlHashes) {
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String removed = "";
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synchronized (dhtOutCache) {
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removed += dhtInCache.removeEntries(wordHash, urlHashes) + ", ";
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}
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synchronized (dhtOutCache) {
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removed += dhtOutCache.removeEntries(wordHash, urlHashes) + ", ";
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}
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removed += collections.removeEntries(wordHash, urlHashes);
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return removed;
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}
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public int removeWordReferences(Set words, String urlhash) {
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// sequentially delete all word references
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// returns number of deletions
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Iterator iter = words.iterator();
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int count = 0;
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while (iter.hasNext()) {
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// delete the URL reference in this word index
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if (removeEntry(plasmaCondenser.word2hash((String) iter.next()), urlhash)) count++;
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}
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return count;
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}
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public int removeHashReferences(Set hashes, String urlhash) {
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// sequentially delete all word references
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// returns number of deletions
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Iterator iter = hashes.iterator();
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int count = 0;
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while (iter.hasNext()) {
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// delete the URL reference in this word index
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if (removeEntry((String) iter.next(), urlhash)) count++;
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}
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return count;
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}
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public int tryRemoveURLs(String urlHash) {
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// this tries to delete an index from the cache that has this
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// urlHash assigned. This can only work if the entry is really fresh
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// and can be found in the RAM cache
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// this returns the number of deletion that had been possible
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int d = 0;
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synchronized (dhtInCache) {
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d = dhtInCache.tryRemoveURLs(urlHash);
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}
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synchronized (dhtOutCache) {
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if (d > 0) return d; else return dhtOutCache.tryRemoveURLs(urlHash);
|
|
}
|
|
}
|
|
|
|
public TreeSet indexContainerSet(String startHash, boolean ram, boolean rot, int count) {
|
|
// creates a set of indexContainers
|
|
// this does not use the dhtInCache
|
|
kelondroOrder containerOrder = new indexContainerOrder((kelondroOrder) indexOrder.clone());
|
|
containerOrder.rotate(startHash.getBytes());
|
|
TreeSet containers = new TreeSet(containerOrder);
|
|
Iterator i = wordContainers(startHash, ram, rot);
|
|
if (ram) count = Math.min(dhtOutCache.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 = (indexContainer) 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 kelondroCloneableIterator wordContainers(String startHash, boolean ram, boolean rot) {
|
|
kelondroCloneableIterator i = wordContainers(startHash, ram);
|
|
if (rot) {
|
|
return new kelondroRotateIterator(i, new String(kelondroBase64Order.zero(startHash.length())));
|
|
} else {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
public kelondroCloneableIterator wordContainers(String startWordHash, boolean ram) {
|
|
kelondroOrder containerOrder = new indexContainerOrder((kelondroOrder) indexOrder.clone());
|
|
containerOrder.rotate(startWordHash.getBytes());
|
|
if (ram) {
|
|
return dhtOutCache.wordContainers(startWordHash, false);
|
|
} else {
|
|
return new kelondroMergeIterator(
|
|
dhtOutCache.wordContainers(startWordHash, false),
|
|
collections.wordContainers(startWordHash, false),
|
|
containerOrder,
|
|
indexContainer.containerMergeMethod,
|
|
true);
|
|
}
|
|
}
|
|
|
|
// The Cleaner class was provided as "UrldbCleaner" by Hydrox
|
|
// see http://www.yacy-forum.de/viewtopic.php?p=18093#18093
|
|
public Cleaner makeCleaner(plasmaCrawlLURL lurl, String startHash) {
|
|
return new Cleaner(lurl, startHash);
|
|
}
|
|
|
|
public class Cleaner extends Thread {
|
|
|
|
private String startHash;
|
|
private boolean run = true;
|
|
private boolean pause = false;
|
|
public int rwiCountAtStart = 0;
|
|
public String wordHashNow = "";
|
|
public String lastWordHash = "";
|
|
public int lastDeletionCounter = 0;
|
|
private plasmaCrawlLURL lurl;
|
|
|
|
public Cleaner(plasmaCrawlLURL lurl, String startHash) {
|
|
this.lurl = lurl;
|
|
this.startHash = startHash;
|
|
this.rwiCountAtStart = size();
|
|
}
|
|
|
|
public void run() {
|
|
serverLog.logInfo("INDEXCLEANER", "IndexCleaner-Thread started");
|
|
indexContainer container = null;
|
|
indexRWIEntry entry = null;
|
|
URL url = null;
|
|
HashSet urlHashs = new HashSet();
|
|
Iterator indexContainerIterator = indexContainerSet(startHash, false, false, 100).iterator();
|
|
while (indexContainerIterator.hasNext() && run) {
|
|
waiter();
|
|
container = (indexContainer) indexContainerIterator.next();
|
|
Iterator containerIterator = container.entries();
|
|
wordHashNow = container.getWordHash();
|
|
while (containerIterator.hasNext() && run) {
|
|
waiter();
|
|
entry = (indexRWIEntry) containerIterator.next();
|
|
// System.out.println("Wordhash: "+wordHash+" UrlHash:
|
|
// "+entry.getUrlHash());
|
|
indexURLEntry ue = lurl.load(entry.urlHash(), null);
|
|
if (ue == null) {
|
|
urlHashs.add(entry.urlHash());
|
|
} else {
|
|
url = ue.comp().url();
|
|
if ((url == null) || (plasmaSwitchboard.urlBlacklist.isListed(plasmaURLPattern.BLACKLIST_CRAWLER, url) == true)) {
|
|
urlHashs.add(entry.urlHash());
|
|
}
|
|
}
|
|
}
|
|
if (urlHashs.size() > 0) {
|
|
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
|
|
TreeSet 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(((indexContainer) 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 (InterruptedException e) {
|
|
this.run = false;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
public static void main(String[] args) {
|
|
// System.out.println(kelondroMSetTools.fastStringComparator(true).compare("RwGeoUdyDQ0Y", "rwGeoUdyDQ0Y"));
|
|
// System.out.println(new Date(reverseMicroDateDays(microDateDays(System.currentTimeMillis()))));
|
|
|
|
File indexdb = new File("D:\\dev\\proxy\\DATA\\INDEX");
|
|
plasmaWordIndex index = new plasmaWordIndex(indexdb, true, 555, 1000, new serverLog("TESTAPP"));
|
|
Iterator containerIter = index.wordContainers("5A8yhZMh_Kmv", plasmaWordIndex.RL_WORDFILES, true);
|
|
while (containerIter.hasNext()) {
|
|
System.out.println("File: " + (indexContainer) containerIter.next());
|
|
}
|
|
}
|
|
*/
|
|
}
|