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689 lines
29 KiB
689 lines
29 KiB
// plasmaWordIndex.java
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// -----------------------
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// part of YACY
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2005
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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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// 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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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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// compile with
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// javac -classpath classes -sourcepath source -d classes -g source/de/anomic/plasma/*.java
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package de.anomic.plasma;
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import java.io.File;
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import java.io.IOException;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.HashSet;
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import java.util.Set;
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import java.util.Date;
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import java.util.TreeSet;
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import de.anomic.net.URL;
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import de.anomic.htmlFilter.htmlFilterContentScraper;
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import de.anomic.index.indexContainer;
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import de.anomic.index.indexEntry;
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import de.anomic.index.indexEntryAttribute;
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import de.anomic.index.indexRAMCacheRI;
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import de.anomic.index.indexRI;
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import de.anomic.index.indexAbstractRI;
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import de.anomic.index.indexTreeMapContainer;
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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.kelondroException;
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import de.anomic.kelondro.kelondroMergeIterator;
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import de.anomic.kelondro.kelondroNaturalOrder;
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import de.anomic.kelondro.kelondroOrder;
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import de.anomic.server.logging.serverLog;
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public final class plasmaWordIndex extends indexAbstractRI implements indexRI {
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private static final String indexAssortmentClusterPath = "ACLUSTER";
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private static final int assortmentCount = 64;
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private final File databaseRoot;
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private final indexRAMCacheRI ramCache;
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private final plasmaWordIndexAssortmentCluster assortmentCluster;
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private int assortmentBufferSize; //kb
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private final plasmaWordIndexFileCluster backend;
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private final kelondroOrder indexOrder = new kelondroNaturalOrder(true);
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public plasmaWordIndex(File databaseRoot, int bufferkb, long preloadTime, serverLog log) {
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this.databaseRoot = databaseRoot;
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this.backend = new plasmaWordIndexFileCluster(databaseRoot, log);
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this.ramCache = new indexRAMCacheRI(databaseRoot, log);
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// create new assortment cluster path
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File assortmentClusterPath = new File(databaseRoot, indexAssortmentClusterPath);
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if (!(assortmentClusterPath.exists())) assortmentClusterPath.mkdirs();
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this.assortmentBufferSize = bufferkb;
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this.assortmentCluster = new plasmaWordIndexAssortmentCluster(assortmentClusterPath, assortmentCount, assortmentBufferSize, preloadTime, log);
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}
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public File getRoot() {
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return databaseRoot;
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}
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public int maxURLinWCache() {
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return ramCache.maxURLinWCache();
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}
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public long minAgeOfWCache() {
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return ramCache.minAgeOfWCache();
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}
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public long maxAgeOfWCache() {
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return ramCache.maxAgeOfWCache();
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}
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public long minAgeOfKCache() {
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return ramCache.minAgeOfKCache();
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}
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public long maxAgeOfKCache() {
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return ramCache.maxAgeOfKCache();
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}
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public int wSize() {
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return ramCache.wSize();
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}
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public int kSize() {
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return ramCache.kSize();
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}
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public int[] assortmentsSizes() {
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return assortmentCluster.sizes();
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}
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public int assortmentsCacheChunkSizeAvg() {
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return assortmentCluster.cacheChunkSizeAvg();
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}
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public int[] assortmentsCacheNodeStatus() {
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return assortmentCluster.cacheNodeStatus();
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}
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public String[] assortmentsCacheObjectStatus() {
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return assortmentCluster.cacheObjectStatus();
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}
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public void setMaxWordCount(int maxWords) {
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ramCache.setMaxWordCount(maxWords);
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}
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public int getMaxWordCount() {
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return ramCache.getMaxWordCount();
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}
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public void flushControl() {
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// check for forced flush
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synchronized (this) { ramCache.shiftK2W(); }
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while (ramCache.maxURLinWCache() > indexRAMCacheRI.wCacheReferenceLimit) {
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flushCache(1);
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}
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if (ramCache.wSize() > ramCache.getMaxWordCount()) {
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while (ramCache.wSize() + 500 > ramCache.getMaxWordCount()) {
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flushCache(1);
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}
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}
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}
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public indexContainer addEntry(String wordHash, indexEntry entry, long updateTime, boolean dhtCase) {
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indexContainer c;
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if ((c = ramCache.addEntry(wordHash, entry, updateTime, dhtCase)) == null) {
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if (!dhtCase) flushControl();
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return null;
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}
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return c;
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}
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public indexContainer addEntries(indexContainer entries, long updateTime, boolean dhtCase) {
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indexContainer added = ramCache.addEntries(entries, updateTime, dhtCase);
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// force flush
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if (!dhtCase) flushControl();
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return added;
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}
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public void flushCacheSome() {
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synchronized (this) { ramCache.shiftK2W(); }
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int flushCount = ramCache.wSize() / 500;
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if (flushCount > 70) flushCount = 70;
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if (flushCount < 5) flushCount = 5;
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flushCache(flushCount);
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}
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public void flushCache(int count) {
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for (int i = 0; i < count; i++) {
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if (ramCache.wSize() == 0) break;
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synchronized (this) { flushCache(ramCache.bestFlushWordHash()); }
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try {Thread.sleep(10);} catch (InterruptedException e) {}
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}
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}
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private synchronized void flushCache(String wordHash) {
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indexContainer c = ramCache.deleteContainer(wordHash);
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if (c != null) {
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indexContainer feedback = assortmentCluster.addEntries(c, c.updated(), false);
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if (feedback != null) {
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backend.addEntries(feedback, System.currentTimeMillis(), true);
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}
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}
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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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// iterate over all words
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Iterator i = condenser.words();
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Map.Entry wentry;
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String word;
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indexURLEntry ientry;
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plasmaCondenser.wordStatProp wprop;
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String wordHash;
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int urlLength = url.toString().length();
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int urlComps = htmlFilterContentScraper.urlComps(url.toString()).length;
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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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// if ((s.length() > 4) && (c > 1)) System.out.println("# " + s + ":" + c);
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wordHash = indexEntryAttribute.word2hash(word);
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ientry = new indexURLEntry(urlHash,
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urlLength, urlComps, (document == null) ? urlLength : document.longTitle.length(),
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wprop.count,
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condenser.RESULT_SIMI_WORDS,
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condenser.RESULT_SIMI_SENTENCES,
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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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condenser.RESULT_WORD_ENTROPHY,
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language,
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doctype,
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outlinksSame, outlinksOther,
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true);
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addEntry(wordHash, ientry, System.currentTimeMillis(), false);
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}
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// System.out.println("DEBUG: plasmaSearch.addPageIndex: added " +
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// condenser.getWords().size() + " words, flushed " + c + " entries");
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return condenser.RESULT_SIMI_WORDS;
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}
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public indexContainer getContainer(String wordHash, boolean deleteIfEmpty, long maxTime) {
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long start = System.currentTimeMillis();
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indexTreeMapContainer container = new indexTreeMapContainer(wordHash);
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// get from cache
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// We must not use the container from cache to store everything we find,
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// as that container remains linked to in the cache and might be changed later
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// while the returned container is still in use.
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// e.g. indexTransfer might keep this container for minutes while
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// several new pages could be added to the index, possibly with the same words that have
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// been selected for transfer
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container.add(ramCache.getContainer(wordHash, true, (maxTime < 0) ? -1 : maxTime / 2), (maxTime < 0) ? -1 : maxTime / 2);
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// get from assortments
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container.add(assortmentCluster.getContainer(wordHash, true, (maxTime < 0) ? -1 : maxTime / 2), (maxTime < 0) ? -1 : maxTime / 2);
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// get from backend
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if (maxTime > 0) {
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maxTime = maxTime - (System.currentTimeMillis() - start);
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if (maxTime < 0) maxTime = 100;
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}
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container.add(backend.getContainer(wordHash, deleteIfEmpty, (maxTime < 0) ? -1 : maxTime / 2), (maxTime < 0) ? -1 : maxTime / 2);
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return container;
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}
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public Set getContainers(Set wordHashes, boolean deleteIfEmpty, boolean interruptIfEmpty, long maxTime) {
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// retrieve entities that belong to the hashes
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HashSet containers = new HashSet();
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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 hash:
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singleHash = (String) i.next();
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// retrieve index
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singleContainer = getContainer(singleHash, deleteIfEmpty, (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 HashSet();
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containers.add(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(assortmentCluster.size(),
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java.lang.Math.max(backend.size(), ramCache.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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try {
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plasmaWordIndexFile entity = backend.getEntity(wordHash, true, -1);
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if (entity != null) {
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size += entity.size();
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entity.close();
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}
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} catch (IOException e) {}
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size += assortmentCluster.indexSize(wordHash);
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size += ramCache.indexSize(wordHash);
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return size;
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}
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public synchronized void close(int waitingBoundSeconds) {
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ramCache.close(waitingBoundSeconds);
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assortmentCluster.close(-1);
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backend.close(10);
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}
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public synchronized indexContainer deleteContainer(String wordHash) {
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indexContainer c = ramCache.deleteContainer(wordHash);
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if (c == null) c = new indexTreeMapContainer(wordHash);
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c.add(assortmentCluster.deleteContainer(wordHash, -1), -1);
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c.add(backend.deleteContainer(wordHash), -1);
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return c;
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}
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public int removeEntries(String wordHash, String[] urlHashes, boolean deleteComplete) {
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int removed;
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boolean addedEntryToRamCache = false;
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synchronized (this) {
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removed = ramCache.removeEntries(wordHash, urlHashes, deleteComplete);
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if (removed == urlHashes.length) return removed;
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indexContainer container = assortmentCluster.deleteContainer(wordHash, -1);
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if (container != null) {
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removed += container.removeEntries(wordHash, urlHashes, deleteComplete);
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if (container.size() != 0) {
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ramCache.addEntries(container, System.currentTimeMillis(), false);
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addedEntryToRamCache = true;
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}
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}
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if (removed != urlHashes.length) {
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removed += backend.removeEntries(wordHash, urlHashes, deleteComplete);
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}
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}
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if (addedEntryToRamCache) flushControl();
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return removed;
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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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return ramCache.tryRemoveURLs(urlHash);
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}
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public static final int RL_RAMCACHE = 0;
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public static final int RL_FILECACHE = 1;
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public static final int RL_ASSORTMENTS = 2;
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public static final int RL_WORDFILES = 3;
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public synchronized TreeSet wordHashSet(String startHash, int resourceLevel, boolean rot, int count) throws IOException {
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kelondroOrder hashOrder = (kelondroOrder) indexOrder.clone();
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hashOrder.rotate(startHash.getBytes());
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TreeSet hashes = new TreeSet(hashOrder);
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Iterator i = wordHashes(startHash, resourceLevel, rot);
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if (resourceLevel == plasmaWordIndex.RL_RAMCACHE) count = Math.min(ramCache.wSize(), count);
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String hash;
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while ((count > 0) && (i.hasNext())) {
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hash = (String) i.next();
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if ((hash != null) && (hash.length() > 0)) {
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hashes.add(hash);
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count--;
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}
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}
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return hashes;
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}
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public Iterator wordHashes(String startHash, boolean rot) {
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try {
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return wordHashes(startHash, RL_WORDFILES, rot);
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} catch (IOException e) {
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return new HashSet().iterator();
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}
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}
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public Iterator wordHashes(String startHash, int resourceLevel, boolean rot) throws IOException {
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if (rot) return new rotatingWordIterator(startHash, resourceLevel);
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else return wordHashes(startHash, resourceLevel);
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}
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private Iterator wordHashes(String startWordHash, int resourceLevel) throws IOException {
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if (resourceLevel == plasmaWordIndex.RL_RAMCACHE) {
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return ramCache.wordHashes(startWordHash, false);
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}
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/*
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if (resourceLevel == plasmaWordIndex.RL_FILECACHE) {
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}
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*/
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if (resourceLevel == plasmaWordIndex.RL_ASSORTMENTS) {
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return new kelondroMergeIterator(
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ramCache.wordHashes(startWordHash, false),
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assortmentCluster.wordHashes(startWordHash, true, false),
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kelondroNaturalOrder.naturalOrder,
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true);
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}
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if (resourceLevel == plasmaWordIndex.RL_WORDFILES) {
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return new kelondroMergeIterator(
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new kelondroMergeIterator(
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ramCache.wordHashes(startWordHash, false),
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assortmentCluster.wordHashes(startWordHash, true, false),
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kelondroNaturalOrder.naturalOrder,
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true),
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backend.wordHashes(startWordHash, true, false),
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kelondroNaturalOrder.naturalOrder,
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true);
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}
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return null;
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}
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private class rotatingWordIterator implements Iterator {
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Iterator i;
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int resourceLevel;
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public rotatingWordIterator(String startWordHash, int resourceLevel) throws IOException {
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this.resourceLevel = resourceLevel;
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i = wordHashes(startWordHash, resourceLevel);
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}
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public void finalize() {
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i = null;
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}
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public boolean hasNext() {
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if (i.hasNext()) return true;
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else try {
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i = wordHashes("------------", resourceLevel);
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return i.hasNext();
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} catch (IOException e) {
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return false;
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}
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}
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public Object next() {
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return i.next();
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}
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public void remove() {
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throw new java.lang.UnsupportedOperationException("rotatingWordIterator does not support remove");
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}
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} // class rotatingWordIterator
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public Object migrateWords2Assortment(String wordhash) throws IOException {
|
|
// returns the number of entries that had been added to the assortments
|
|
// can be negative if some assortments have been moved to the backend
|
|
File db = plasmaWordIndexFile.wordHash2path(databaseRoot, wordhash);
|
|
if (!(db.exists())) return "not available";
|
|
plasmaWordIndexFile entity = null;
|
|
try {
|
|
entity = new plasmaWordIndexFile(databaseRoot, wordhash, true);
|
|
int size = entity.size();
|
|
if (size > assortmentCluster.clusterCapacity) {
|
|
// this will be too big to integrate it
|
|
entity.close(); entity = null;
|
|
return "too big";
|
|
} else {
|
|
// take out all words from the assortment to see if it fits
|
|
// together with the extracted assortment
|
|
indexContainer container = assortmentCluster.deleteContainer(wordhash, -1);
|
|
if (size + container.size() > assortmentCluster.clusterCapacity) {
|
|
// this will also be too big to integrate, add to entity
|
|
entity.addEntries(container);
|
|
entity.close(); entity = null;
|
|
return new Integer(-container.size());
|
|
} else {
|
|
// the combined container will fit, read the container
|
|
try {
|
|
Iterator entries = entity.elements(true);
|
|
indexURLEntry entry;
|
|
while (entries.hasNext()) {
|
|
entry = (indexURLEntry) entries.next();
|
|
// System.out.println("ENTRY = " + entry.getUrlHash());
|
|
container.add(new indexURLEntry[]{entry}, System.currentTimeMillis());
|
|
}
|
|
// we have read all elements, now delete the entity
|
|
entity.deleteComplete();
|
|
entity.close(); entity = null;
|
|
// integrate the container into the assortments; this will work
|
|
assortmentCluster.addEntries(container, container.updated(), false);
|
|
return new Integer(size);
|
|
} catch (kelondroException e) {
|
|
// database corrupted, we simply give up the database and delete it
|
|
try {entity.close();} catch (Exception ee) {} entity = null;
|
|
try {db.delete();} catch (Exception ee) {}
|
|
return "database corrupted; deleted";
|
|
}
|
|
}
|
|
}
|
|
} finally {
|
|
if (entity != null) try {entity.close();}catch(Exception e){}
|
|
}
|
|
}
|
|
|
|
// 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");
|
|
String wordHash = "";
|
|
indexContainer wordContainer = null;
|
|
indexURLEntry entry = null;
|
|
URL url = null;
|
|
HashSet urlHashs = new HashSet();
|
|
try {
|
|
Iterator wordHashIterator = wordHashSet(startHash, plasmaWordIndex.RL_WORDFILES, false, 100).iterator();
|
|
while (wordHashIterator.hasNext() && run) {
|
|
waiter();
|
|
wordHash = (String) wordHashIterator.next();
|
|
wordContainer = getContainer(wordHash, true, -1);
|
|
Iterator containerIterator = wordContainer.entries();
|
|
wordHashNow = wordHash;
|
|
while (containerIterator.hasNext() && run) {
|
|
waiter();
|
|
entry = (indexURLEntry) containerIterator.next();
|
|
// System.out.println("Wordhash: "+wordHash+" UrlHash:
|
|
// "+entry.getUrlHash());
|
|
try {
|
|
url = lurl.getEntry(entry.urlHash(), null).url();
|
|
if ((url == null) || (plasmaSwitchboard.urlBlacklist.isListed(url) == true)) {
|
|
urlHashs.add(entry.urlHash());
|
|
}
|
|
} catch (IOException e) {
|
|
urlHashs.add(entry.urlHash());
|
|
}
|
|
}
|
|
if (urlHashs.size() > 0) {
|
|
String[] urlArray;
|
|
urlArray = (String[]) urlHashs.toArray(new String[0]);
|
|
int removed = removeEntries(wordHash, urlArray, true);
|
|
serverLog.logFine("INDEXCLEANER", wordHash + ": " + removed + " of " + wordContainer.size() + " URL-entries deleted");
|
|
lastWordHash = wordHash;
|
|
lastDeletionCounter = urlHashs.size();
|
|
urlHashs.clear();
|
|
}
|
|
if (!wordHashIterator.hasNext()) {
|
|
// We may not be finished yet, try to get the next chunk of wordHashes
|
|
TreeSet wordHashes = wordHashSet(wordHash, plasmaWordIndex.RL_WORDFILES, false, 100);
|
|
wordHashIterator = wordHashes.iterator();
|
|
// Make sure we don't get the same wordhash twice, but don't skip a word
|
|
if ((wordHashIterator.hasNext())&&(!wordHash.equals(wordHashIterator.next()))) {
|
|
wordHashIterator = wordHashes.iterator();
|
|
}
|
|
}
|
|
}
|
|
} catch (IOException e) {
|
|
serverLog.logSevere("INDEXCLEANER",
|
|
"IndexCleaner-Thread: unable to start: "
|
|
+ e.getMessage());
|
|
}
|
|
serverLog.logInfo("INDEXCLEANER", "IndexCleaner-Thread stopped");
|
|
}
|
|
|
|
public void abort() {
|
|
synchronized(this) {
|
|
run = false;
|
|
this.notifyAll();
|
|
}
|
|
}
|
|
|
|
public void pause() {
|
|
synchronized(this) {
|
|
if(pause == false) {
|
|
pause = true;
|
|
serverLog.logInfo("INDEXCLEANER", "IndexCleaner-Thread paused");
|
|
}
|
|
}
|
|
}
|
|
|
|
public void endPause() {
|
|
synchronized(this) {
|
|
if (pause == true) {
|
|
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()))));
|
|
|
|
plasmaWordIndex index = new plasmaWordIndex(new File("D:\\dev\\proxy\\DATA\\PLASMADB"), 555, 1000, new serverLog("TESTAPP"));
|
|
try {
|
|
Iterator iter = index.wordHashes("5A8yhZMh_Kmv", plasmaWordIndex.RL_WORDFILES, true);
|
|
while (iter.hasNext()) {
|
|
System.out.println("File: " + (String) iter.next());
|
|
}
|
|
} catch (IOException e) {
|
|
e.printStackTrace();
|
|
}
|
|
|
|
}
|
|
|
|
}
|