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923 lines
43 KiB
923 lines
43 KiB
//plasmaWordIndexDistribution.java
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//-------------------------------------------
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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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package de.anomic.plasma;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.Iterator;
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import java.util.HashSet;
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import java.util.HashMap;
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import de.anomic.yacy.yacyCore;
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import de.anomic.yacy.yacySeed;
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import de.anomic.yacy.yacySeedDB;
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import de.anomic.yacy.yacyClient;
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import de.anomic.yacy.yacyDHTAction;
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import de.anomic.server.serverCodings;
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import de.anomic.server.logging.serverLog;
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import de.anomic.kelondro.kelondroException;
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public final class plasmaWordIndexDistribution {
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// distributes parts of the index to other peers
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// stops as soon as an error occurrs
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private int indexCount;
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private int juniorPeerCount, seniorPeerCount;
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private long maxTime;
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private final plasmaURLPool urlPool;
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private final plasmaWordIndex wordIndex;
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final serverLog log;
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boolean paused = false;
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private boolean enabled;
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private boolean enabledWhileCrawling;
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private boolean closed;
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private boolean gzipBody;
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private int timeout;
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private int maxOpenFiles;
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public transferIndexThread transferIdxThread = null;
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public plasmaWordIndexDistribution(
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plasmaURLPool urlPool,
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plasmaWordIndex wordIndex,
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serverLog log,
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boolean enable,
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boolean enabledWhileCrawling,
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boolean gzipBody,
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int timeout,
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int maxOpenFiles
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) {
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this.urlPool = urlPool;
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this.wordIndex = wordIndex;
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this.enabled = enable;
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this.enabledWhileCrawling = enabledWhileCrawling;
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this.log = log;
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this.closed = false;
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setCounts(100 /*indexCount*/, 1 /*juniorPeerCount*/, 3 /*seniorPeerCount*/, 8000);
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this.gzipBody = gzipBody;
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this.timeout = timeout;
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this.maxOpenFiles = maxOpenFiles;
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}
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public void enable() {
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enabled = true;
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}
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public void disable() {
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enabled = false;
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}
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public void enableWhileCrawling() {
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this.enabledWhileCrawling = true;
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}
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public void disableWhileCrawling() {
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this.enabledWhileCrawling = false;
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}
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public void close() {
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closed = true;
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if (transferIdxThread != null) {
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stopTransferWholeIndex(false);
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}
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}
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public boolean job() {
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if (this.closed) {
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log.logFine("no word distribution: closed");
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return false;
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}
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if (yacyCore.seedDB == null) {
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log.logFine("no word distribution: seedDB == null");
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return false;
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}
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if (yacyCore.seedDB.mySeed == null) {
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log.logFine("no word distribution: mySeed == null");
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return false;
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}
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if (yacyCore.seedDB.mySeed.isVirgin()) {
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log.logFine("no word distribution: status is virgin");
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return false;
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}
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if (!(enabled)) {
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log.logFine("no word distribution: not enabled");
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return false;
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}
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if (paused) {
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log.logFine("no word distribution: paused");
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return false;
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}
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if (urlPool.loadedURL.size() < 10) {
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log.logFine("no word distribution: loadedURL.size() = " + urlPool.loadedURL.size());
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return false;
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}
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if (wordIndex.size() < 100) {
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log.logFine("no word distribution: not enough words - wordIndex.size() = " + wordIndex.size());
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return false;
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}
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if ((!enabledWhileCrawling) && (urlPool.noticeURL.stackSize() > 0)) {
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log.logFine("no word distribution: crawl in progress - noticeURL.stackSize() = " + urlPool.noticeURL.stackSize());
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return false;
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}
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// do the transfer
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int peerCount = (yacyCore.seedDB.mySeed.isJunior()) ? juniorPeerCount : seniorPeerCount;
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long starttime = System.currentTimeMillis();
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int transferred = performTransferIndex(indexCount, peerCount, true);
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if (transferred <= 0) {
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log.logFine("no word distribution: transfer failed");
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return false;
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}
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// adopt transfer count
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if ((System.currentTimeMillis() - starttime) > (maxTime * peerCount))
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indexCount--;
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else
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indexCount++;
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if (indexCount < 50) indexCount = 50;
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// show success
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return true;
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}
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public void setCounts(int indexCount, int juniorPeerCount, int seniorPeerCount, long maxTimePerTransfer) {
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this.maxTime = maxTimePerTransfer;
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this.indexCount = indexCount;
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if (indexCount < 30) indexCount = 30;
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this.juniorPeerCount = juniorPeerCount;
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this.seniorPeerCount = seniorPeerCount;
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}
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public int performTransferIndex(int indexCount, int peerCount, boolean delete) {
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if ((yacyCore.seedDB == null) || (yacyCore.seedDB.sizeConnected() == 0)) return -1;
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// collect index
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String startPointHash = selectTransferStart();
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log.logFine("Selected hash " + startPointHash + " as start point for index distribution, distance = " + yacyDHTAction.dhtDistance(yacyCore.seedDB.mySeed.hash, startPointHash));
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Object[] selectResult = selectTransferIndexes(startPointHash, indexCount, this.maxOpenFiles);
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plasmaWordIndexEntity[] indexEntities = (plasmaWordIndexEntity[]) selectResult[0];
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Integer openedFiles = (Integer) selectResult[2];
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HashMap urlCache = (HashMap) selectResult[1]; // String (url-hash) / plasmaCrawlLURL.Entry
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if ((indexEntities == null) || (indexEntities.length == 0)) {
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log.logFine("No index available for index transfer, hash start-point " + startPointHash);
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return -1;
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}
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// count the indexes again, can be smaller as expected
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indexCount = 0;
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for (int i = 0; i < indexEntities.length; i++) {
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indexCount += indexEntities[i].size();
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}
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// find start point for DHT-selection
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String keyhash = indexEntities[indexEntities.length - 1].wordHash(); // DHT targets must have greater hashes
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// iterate over DHT-peers and send away the indexes
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yacySeed seed;
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int hc = 0;
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Enumeration e = yacyCore.dhtAgent.getAcceptRemoteIndexSeeds(keyhash);
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String error;
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String peerNames = "";
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double avdist;
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long start;
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while ((e.hasMoreElements()) && (hc < peerCount)) {
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if (closed) {
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log.logSevere("Index distribution interrupted by close, nothing deleted locally.");
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return -1; // interrupted
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}
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seed = (yacySeed) e.nextElement();
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if ((seed != null) &&
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((avdist = (yacyDHTAction.dhtDistance(seed.hash, indexEntities[0].wordHash()) +
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yacyDHTAction.dhtDistance(seed.hash, indexEntities[indexEntities.length-1].wordHash())) / 2.0) < 0.3)) {
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start = System.currentTimeMillis();
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error = yacyClient.transferIndex(seed, indexEntities, urlCache, this.gzipBody, this.timeout);
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if (error == null) {
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log.logInfo("Index transfer of " + indexCount + " words [" + indexEntities[0].wordHash() + " .. " + indexEntities[indexEntities.length-1].wordHash() + "]/" +
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avdist + " to peer " + seed.getName() + ":" + seed.hash + " in " +
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((System.currentTimeMillis() - start) / 1000) + " seconds successfull (" +
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(1000 * indexCount / (System.currentTimeMillis() - start + 1)) + " words/s)");
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peerNames += ", " + seed.getName();
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hc++;
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} else {
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log.logWarning("Index transfer to peer " + seed.getName() + ":" + seed.hash + " failed:'" + error + "', disconnecting peer");
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yacyCore.peerActions.peerDeparture(seed);
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}
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}
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}
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if (peerNames.length() > 0) peerNames = peerNames.substring(2); // remove comma
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// clean up and finish with deletion of indexes
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if (hc >= peerCount) {
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// success
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if (delete) {
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try {
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if (deleteTransferIndexes(indexEntities)) {
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log.logFine("Deleted all " + indexEntities.length + " transferred whole-word indexes locally");
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return indexCount;
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} else {
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log.logSevere("Deleted not all transferred whole-word indexes");
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return -1;
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}
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} catch (IOException ee) {
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log.logSevere("Deletion of indexes not possible:" + ee.getMessage(), ee);
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return -1;
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}
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} else {
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// simply close the indexEntities
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for (int i = 0; i < indexEntities.length; i++) try {
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indexEntities[i].close();
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} catch (IOException ee) {}
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}
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return indexCount;
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} else {
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log.logSevere("Index distribution failed. Too few peers (" + hc + ") received the index, not deleted locally.");
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// simply close the indexEntities
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for (int i = 0; i < indexEntities.length; i++) try {
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indexEntities[i].close();
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} catch (IOException ee) {}
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return -1;
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}
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}
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private String selectTransferStart() {
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String startPointHash;
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// first try to select with increasing probality a good start point
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if (Math.round(Math.random() * 6) != 4) for (int i = 9; i > 0; i--) {
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startPointHash = serverCodings.encodeMD5B64(Long.toString(i + System.currentTimeMillis()), true).substring(2, 2 + yacySeedDB.commonHashLength);
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if (yacyDHTAction.dhtDistance(yacyCore.seedDB.mySeed.hash, startPointHash) > ((double) i / (double) 10)) return startPointHash;
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}
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// if that fails, take simply the best start point (this is usually avoided, since that leads to always the same target peers)
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startPointHash = yacyCore.seedDB.mySeed.hash.substring(0, 11) + "z";
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return startPointHash;
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}
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Object[] /* of {plasmaWordIndexEntity[], HashMap(String, plasmaCrawlLURL.Entry)}*/
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selectTransferIndexes(String hash, int count, int maxOpenFiles) {
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// the hash is a start hash from where the indexes are picked
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ArrayList tmpEntities = new ArrayList(count);
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String nexthash = "";
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try {
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int currOpenFiles = 0;
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Iterator wordHashIterator = this.wordIndex.wordHashes(hash, true, true);
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plasmaWordIndexEntity indexEntity, tmpEntity;
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Iterator urlIter;
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Iterator hashIter;
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plasmaWordIndexEntry indexEntry;
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plasmaCrawlLURL.Entry lurl;
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final HashSet unknownURLEntries = new HashSet();
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final HashMap knownURLs = new HashMap();
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while (
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(count > 0) &&
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(currOpenFiles < maxOpenFiles) &&
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(wordHashIterator.hasNext()) &&
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((nexthash = (String) wordHashIterator.next()) != null) &&
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(nexthash.trim().length() > 0)
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) {
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indexEntity = this.wordIndex.getEntity(nexthash, true, -1);
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if (indexEntity.size() == 0) {
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indexEntity.deleteComplete();
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} else if ((indexEntity.size() <= count)|| // if we havn't exceeded the limit
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(Math.abs(indexEntity.size() - count) <= 10)){ // or there are only at most 10 entries left
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// take the whole entity
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try {
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// fist check if we know all urls
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urlIter = indexEntity.elements(true);
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unknownURLEntries.clear();
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while (urlIter.hasNext()) {
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indexEntry = (plasmaWordIndexEntry) urlIter.next();
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lurl = this.urlPool.loadedURL.getEntry(indexEntry.getUrlHash());
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if ((lurl == null) || (lurl.url() == null)) {
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unknownURLEntries.add(indexEntry.getUrlHash());
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} else {
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knownURLs.put(indexEntry.getUrlHash(), lurl);
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}
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}
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// now delete all entries that have no url entry
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hashIter = unknownURLEntries.iterator();
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while (hashIter.hasNext()) {
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String nextUrlHash = (String) hashIter.next();
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indexEntity.removeEntry(nextUrlHash, false);
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this.urlPool.loadedURL.remove(nextUrlHash);
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}
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if (indexEntity.size() == 0) {
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indexEntity.deleteComplete();
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} else {
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// use whats remaining
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tmpEntities.add(indexEntity);
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this.log.logFine("Selected whole index (" + indexEntity.size() + " URLs, " + unknownURLEntries.size() + " not bound) for word " + indexEntity.wordHash());
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count -= indexEntity.size();
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currOpenFiles++;
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}
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} catch (kelondroException e) {
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this.log.logSevere("plasmaWordIndexDistribution/1: deleted DB for word " + indexEntity.wordHash(), e);
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indexEntity.deleteComplete();
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}
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} else {
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// make an on-the-fly entity and insert values
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tmpEntity = new plasmaWordIndexEntity(indexEntity.wordHash());
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try {
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urlIter = indexEntity.elements(true);
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unknownURLEntries.clear();
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while ((urlIter.hasNext()) && (count > 0)) {
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indexEntry = (plasmaWordIndexEntry) urlIter.next();
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lurl = this.urlPool.loadedURL.getEntry(indexEntry.getUrlHash());
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if ((lurl == null) || (lurl.url()==null)) {
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unknownURLEntries.add(indexEntry.getUrlHash());
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} else {
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knownURLs.put(indexEntry.getUrlHash(), lurl);
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tmpEntity.addEntry(indexEntry);
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count--;
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}
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}
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// now delete all entries that have no url entry
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hashIter = unknownURLEntries.iterator();
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while (hashIter.hasNext()) {
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String nextUrlHash = (String) hashIter.next();
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indexEntity.removeEntry(nextUrlHash, true);
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this.urlPool.loadedURL.remove(nextUrlHash);
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}
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// deleting entity if there are no more entries left
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// This could occure if there are unknownURLs in the entity
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if (indexEntity.size() == 0) {
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indexEntity.deleteComplete();
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}
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// use whats remaining
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this.log.logFine("Selected partial index (" + tmpEntity.size() + " from " + indexEntity.size() +" URLs, " + unknownURLEntries.size() + " not bound) for word " + tmpEntity.wordHash());
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tmpEntities.add(tmpEntity);
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} catch (kelondroException e) {
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this.log.logSevere("plasmaWordIndexDistribution/2: deleted DB for word " + indexEntity.wordHash(), e);
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indexEntity.deleteComplete();
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}
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indexEntity.close(); // important: is not closed elswhere and cannot be deleted afterwards
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indexEntity = null;
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}
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}
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// transfer to array
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plasmaWordIndexEntity[] indexEntities = (plasmaWordIndexEntity[]) tmpEntities.toArray(new plasmaWordIndexEntity[tmpEntities.size()]);
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return new Object[]{indexEntities, knownURLs, new Integer(currOpenFiles)};
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} catch (IOException e) {
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this.log.logSevere("selectTransferIndexes IO-Error (hash=" + nexthash + "): " + e.getMessage(), e);
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return new Object[]{new plasmaWordIndexEntity[0], new HashMap(0)};
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} catch (kelondroException e) {
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this.log.logSevere("selectTransferIndexes database corrupted: " + e.getMessage(), e);
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return new Object[]{new plasmaWordIndexEntity[0], new HashMap(0)};
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}
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}
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boolean deleteTransferIndexes(plasmaWordIndexEntity[] indexEntities) throws IOException {
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String wordhash;
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Iterator urlIter;
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plasmaWordIndexEntry indexEntry;
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plasmaWordIndexEntity indexEntity;
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String[] urlHashes;
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int sz;
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boolean success = true;
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for (int i = 0; i < indexEntities.length; i++) {
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if (indexEntities[i].isTMPEntity()) {
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// delete entries separately
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int c = 0;
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urlHashes = new String[indexEntities[i].size()];
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urlIter = indexEntities[i].elements(true);
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while (urlIter.hasNext()) {
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indexEntry = (plasmaWordIndexEntry) urlIter.next();
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urlHashes[c++] = indexEntry.getUrlHash();
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}
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wordIndex.removeEntries(indexEntities[i].wordHash(), urlHashes, true);
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indexEntity = wordIndex.getEntity(indexEntities[i].wordHash(), true, -1);
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sz = indexEntity.size();
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indexEntity.close();
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log.logFine("Deleted partial index (" + c + " URLs) for word " + indexEntities[i].wordHash() + "; " + sz + " entries left");
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// DEBUG: now try to delete the remaining index. If this works, this routine is fine
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/*
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if (wordIndex.getEntity(indexEntities[i].wordHash()).deleteComplete())
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System.out.println("DEBUG: trial delete of partial word index " + indexEntities[i].wordHash() + " SUCCESSFULL");
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else
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System.out.println("DEBUG: trial delete of partial word index " + indexEntities[i].wordHash() + " FAILED");
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*/
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// end debug
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indexEntities[i].close();
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} else {
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// delete complete file
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if (indexEntities[i].deleteComplete()) {
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indexEntities[i].close();
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} else {
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indexEntities[i].close();
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// have another try...
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if (!(plasmaWordIndexEntity.wordHash2path(wordIndex.getRoot() /*PLASMADB*/, indexEntities[i].wordHash()).delete())) {
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success = false;
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log.logSevere("Could not delete whole index for word " + indexEntities[i].wordHash());
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}
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}
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}
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indexEntities[i] = null;
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}
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return success;
|
|
}
|
|
|
|
public void startTransferWholeIndex(yacySeed seed, boolean delete) {
|
|
if (transferIdxThread == null) {
|
|
this.transferIdxThread = new transferIndexThread(seed,delete);
|
|
this.transferIdxThread.start();
|
|
}
|
|
}
|
|
|
|
public void stopTransferWholeIndex(boolean wait) {
|
|
if ((transferIdxThread != null) && (transferIdxThread.isAlive()) && (!transferIdxThread.isFinished())) {
|
|
try {
|
|
this.transferIdxThread.stopIt(wait);
|
|
} catch (InterruptedException e) { }
|
|
}
|
|
}
|
|
|
|
public void abortTransferWholeIndex(boolean wait) {
|
|
if (transferIdxThread != null) {
|
|
if (!transferIdxThread.isFinished())
|
|
try {
|
|
this.transferIdxThread.stopIt(wait);
|
|
} catch (InterruptedException e) { }
|
|
transferIdxThread = null;
|
|
}
|
|
}
|
|
|
|
private class transferIndexWorkerThread extends Thread{
|
|
// connection properties
|
|
private boolean gzipBody = false;
|
|
private int timeout = 60000;
|
|
|
|
// status fields
|
|
private boolean finished = false;
|
|
boolean success = false;
|
|
private String status = "running";
|
|
private long iteration = 0;
|
|
private long transferTime = 0;
|
|
private int idxCount = 0;
|
|
private int chunkSize = 0;
|
|
|
|
// delivery destination
|
|
yacySeed seed = null;
|
|
|
|
// word chunk
|
|
private String endPointHash;
|
|
private String startPointHash;
|
|
plasmaWordIndexEntity[] indexEntities;
|
|
|
|
// other fields
|
|
HashMap urlCache;
|
|
|
|
public transferIndexWorkerThread(
|
|
yacySeed seed,
|
|
plasmaWordIndexEntity[] indexEntities,
|
|
HashMap urlCache,
|
|
boolean gzipBody,
|
|
int timeout,
|
|
long iteration,
|
|
int idxCount,
|
|
int chunkSize,
|
|
String endPointHash,
|
|
String startPointHash) {
|
|
super(new ThreadGroup("TransferIndexThreadGroup"),"TransferIndexWorker_" + seed.getName());
|
|
this.gzipBody = gzipBody;
|
|
this.timeout = timeout;
|
|
this.iteration = iteration;
|
|
this.seed = seed;
|
|
this.indexEntities = indexEntities;
|
|
this.urlCache = urlCache;
|
|
this.idxCount = idxCount;
|
|
this.chunkSize = chunkSize;
|
|
this.startPointHash = startPointHash;
|
|
this.endPointHash = endPointHash;
|
|
}
|
|
|
|
public void run() {
|
|
try {
|
|
uploadIndex();
|
|
} catch (InterruptedException e) {
|
|
// TODO Auto-generated catch block
|
|
e.printStackTrace();
|
|
} finally {
|
|
|
|
}
|
|
}
|
|
|
|
public boolean success() {
|
|
return this.success;
|
|
}
|
|
|
|
public int getChunkSize() {
|
|
return this.chunkSize;
|
|
}
|
|
|
|
public String getStatus() {
|
|
return this.status;
|
|
}
|
|
|
|
private boolean isAborted() {
|
|
if (finished || Thread.currentThread().isInterrupted()) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public void stopIt() {
|
|
this.finished = true;
|
|
}
|
|
|
|
public String getRange() {
|
|
return "[" + startPointHash + ".." + endPointHash + "]";
|
|
}
|
|
|
|
public long getTransferTime() {
|
|
return this.transferTime;
|
|
}
|
|
|
|
private void uploadIndex() throws InterruptedException {
|
|
|
|
/* loop until we
|
|
* - have successfully transfered the words list or
|
|
* - the retry counter limit was exceeded
|
|
*/
|
|
long retryCount = 0, start = System.currentTimeMillis();
|
|
while (true) {
|
|
// testing if we wer aborted
|
|
if (isAborted()) return;
|
|
|
|
// transfering seleted words to remote peer
|
|
this.status = "Running: Transfering chunk " + iteration;
|
|
String error = yacyClient.transferIndex(seed, indexEntities, urlCache, this.gzipBody, this.timeout);
|
|
if (error == null) {
|
|
// words successfully transfered
|
|
transferTime = System.currentTimeMillis() - start;
|
|
plasmaWordIndexDistribution.this.log.logInfo("Index transfer of " + idxCount + " words [" + indexEntities[0].wordHash() + " .. " + indexEntities[indexEntities.length-1].wordHash() + "]" +
|
|
" to peer " + seed.getName() + ":" + seed.hash + " in " + (transferTime/1000) + " seconds successfull (" +
|
|
(1000 * idxCount / (transferTime + 1)) + " words/s)");
|
|
retryCount = 0;
|
|
|
|
// if (transferTime > 30000) {
|
|
// if (chunkSize>100) chunkSize-=50;
|
|
// } else {
|
|
// chunkSize+=50;
|
|
// }
|
|
this.success = true;
|
|
this.status = "Finished: Transfer of chunk " + iteration;
|
|
break;
|
|
} else {
|
|
// worts transfer failed
|
|
|
|
// inc retry counter
|
|
retryCount++;
|
|
|
|
// testing if we were aborted ...
|
|
if (isAborted()) return;
|
|
|
|
// we have lost the connection to the remote peer. Adding peer to disconnected list
|
|
plasmaWordIndexDistribution.this.log.logWarning("Index transfer to peer " + seed.getName() + ":" + seed.hash + " failed:'" + error + "', disconnecting peer");
|
|
yacyCore.peerActions.peerDeparture(seed);
|
|
|
|
// if the retry counter limit was not exceeded we'll retry it in a few seconds
|
|
this.status = "Disconnected peer: " + ((retryCount > 5)? error + ". Transfer aborted":"Retry " + retryCount);
|
|
if (retryCount > 5) return;
|
|
Thread.sleep(retryCount*5000);
|
|
|
|
/* loop until
|
|
* - we have successfully done a peer ping or
|
|
* - the retry counter limit was exceeded
|
|
*/
|
|
while (true) {
|
|
// testing if we were aborted ...
|
|
if (isAborted()) return;
|
|
|
|
// doing a peer ping to the remote seed
|
|
int added = yacyClient.publishMySeed(seed.getAddress(), seed.hash);
|
|
if (added < 0) {
|
|
// inc. retry counter
|
|
retryCount++;
|
|
this.status = "Disconnected peer: Peer ping failed. " + ((retryCount > 5)?"Transfer aborted.":"Retry " + retryCount);
|
|
if (retryCount > 5) return;
|
|
Thread.sleep(retryCount*5000);
|
|
continue;
|
|
} else {
|
|
yacyCore.seedDB.getConnected(seed.hash);
|
|
this.status = "running";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
public class transferIndexThread extends Thread {
|
|
private yacySeed seed = null;
|
|
private boolean delete = false;
|
|
private boolean finished = false;
|
|
private boolean gzipBody = false;
|
|
private int timeout = 60000;
|
|
private int maxOpenFiles = 800;
|
|
private int transferedEntryCount = 0;
|
|
private int transferedEntityCount = 0;
|
|
private String status = "Running";
|
|
private String oldStartingPointHash = "------------", startPointHash = "------------";
|
|
private int initialWordsDBSize = 0;
|
|
private int chunkSize = 500;
|
|
private final long startingTime = System.currentTimeMillis();
|
|
private final plasmaSwitchboard sb;
|
|
private final Runtime rt = Runtime.getRuntime();
|
|
transferIndexWorkerThread worker = null;
|
|
|
|
public transferIndexThread(yacySeed seed, boolean delete) {
|
|
super(new ThreadGroup("TransferIndexThreadGroup"),"TransferIndex_" + seed.getName());
|
|
this.seed = seed;
|
|
this.delete = delete;
|
|
this.sb = plasmaSwitchboard.getSwitchboard();
|
|
this.initialWordsDBSize = sb.wordIndex.size();
|
|
this.gzipBody = "true".equalsIgnoreCase(sb.getConfig("indexTransfer.gzipBody","false"));
|
|
this.timeout = (int) sb.getConfigLong("indexTransfer.timeout",60000);
|
|
this.maxOpenFiles = (int) sb.getConfigLong("indexTransfer.maxOpenFiles",800);
|
|
}
|
|
|
|
public void run() {
|
|
performTransferWholeIndex();
|
|
}
|
|
|
|
public void stopIt(boolean wait) throws InterruptedException {
|
|
this.finished = true;
|
|
this.join();
|
|
}
|
|
|
|
public boolean isFinished() {
|
|
return this.finished;
|
|
}
|
|
|
|
public boolean deleteIndex() {
|
|
return this.delete;
|
|
}
|
|
|
|
public int[] getChunkSize() {
|
|
transferIndexWorkerThread workerThread = this.worker;
|
|
if (workerThread != null) {
|
|
return new int[]{this.chunkSize,workerThread.getChunkSize()};
|
|
}
|
|
return new int[]{this.chunkSize,500};
|
|
}
|
|
|
|
public int getTransferedEntryCount() {
|
|
return this.transferedEntryCount;
|
|
}
|
|
|
|
public int getTransferedEntityCount() {
|
|
return this.transferedEntityCount;
|
|
}
|
|
|
|
public float getTransferedEntityPercent() {
|
|
long currentWordsDBSize = sb.wordIndex.size();
|
|
if (initialWordsDBSize == 0) return 100;
|
|
else if (currentWordsDBSize >= initialWordsDBSize) return 0;
|
|
//else return (float) ((initialWordsDBSize-currentWordsDBSize)/(initialWordsDBSize/100));
|
|
else return (float)(this.transferedEntityCount*100/initialWordsDBSize);
|
|
}
|
|
|
|
public int getTransferedEntitySpeed() {
|
|
return (int) ((1000 * transferedEntryCount) / (System.currentTimeMillis()-startingTime));
|
|
}
|
|
|
|
public yacySeed getSeed() {
|
|
return this.seed;
|
|
}
|
|
|
|
public String[] getStatus() {
|
|
transferIndexWorkerThread workerThread = this.worker;
|
|
if (workerThread != null) {
|
|
return new String[]{this.status,workerThread.getStatus()};
|
|
}
|
|
return new String[]{this.status,"Not running"};
|
|
}
|
|
|
|
public String[] getRange() {
|
|
transferIndexWorkerThread workerThread = this.worker;
|
|
if (workerThread != null) {
|
|
return new String[]{"[" + oldStartingPointHash + ".." + startPointHash + "]",workerThread.getRange()};
|
|
}
|
|
return new String[]{"[" + oldStartingPointHash + ".." + startPointHash + "]","[------------..------------]"};
|
|
}
|
|
|
|
public void performTransferWholeIndex() {
|
|
plasmaWordIndexEntity[] newIndexEntities = null, oldIndexEntities = null;
|
|
try {
|
|
// pausing the regular index distribution
|
|
// TODO: adding sync, to wait for a still running index distribution to finish
|
|
plasmaWordIndexDistribution.this.paused = true;
|
|
|
|
// initial startingpoint of intex transfer is "------------"
|
|
plasmaWordIndexDistribution.this.log.logFine("Selected hash " + startPointHash + " as start point for index distribution of whole index");
|
|
|
|
/* Loop until we have
|
|
* - finished transfer of whole index
|
|
* - detected a server shutdown or user interruption
|
|
* - detected a failure
|
|
*/
|
|
long selectionStart = System.currentTimeMillis(), selectionEnd = 0, selectionTime = 0, iteration = 0;
|
|
|
|
Integer openedFiles = new Integer(0);
|
|
while (!finished && !Thread.currentThread().isInterrupted()) {
|
|
iteration++;
|
|
int idxCount = 0;
|
|
selectionStart = System.currentTimeMillis();
|
|
oldIndexEntities = newIndexEntities;
|
|
|
|
// selecting 500 words to transfer
|
|
this.status = "Running: Selecting chunk " + iteration;
|
|
Object[] selectResult = selectTransferIndexes(this.startPointHash, this.chunkSize, this.maxOpenFiles-openedFiles.intValue());
|
|
newIndexEntities = (plasmaWordIndexEntity[]) selectResult[0];
|
|
HashMap urlCache = (HashMap) selectResult[1]; // String (url-hash) / plasmaCrawlLURL.Entry
|
|
openedFiles = (Integer) selectResult[2];
|
|
|
|
/* If we havn't selected a word chunk this could be because of
|
|
* a) no words are left in the index
|
|
* b) max open file limit was exceeded
|
|
*/
|
|
if ((newIndexEntities == null) || (newIndexEntities.length == 0)) {
|
|
if (sb.wordIndex.size() > 0) {
|
|
// if there are still words in the index we try it again now
|
|
startPointHash = "------------";
|
|
} else {
|
|
// otherwise we could end transfer now
|
|
plasmaWordIndexDistribution.this.log.logFine("No index available for index transfer, hash start-point " + startPointHash);
|
|
this.status = "Finished. " + iteration + " chunks transfered.";
|
|
finished = true;
|
|
}
|
|
} else {
|
|
// count the indexes again, can be smaller as expected
|
|
for (int i = 0; i < newIndexEntities.length; i++) idxCount += newIndexEntities[i].size();
|
|
|
|
// getting start point for next DHT-selection
|
|
oldStartingPointHash = startPointHash;
|
|
startPointHash = newIndexEntities[newIndexEntities.length - 1].wordHash(); // DHT targets must have greater hashes
|
|
|
|
selectionEnd = System.currentTimeMillis();
|
|
selectionTime = selectionEnd - selectionStart;
|
|
plasmaWordIndexDistribution.this.log.logInfo("Index selection of " + idxCount + " words [" + newIndexEntities[0].wordHash() + " .. " + newIndexEntities[newIndexEntities.length-1].wordHash() + "]" +
|
|
" in " +
|
|
(selectionTime / 1000) + " seconds (" +
|
|
(1000 * idxCount / (selectionTime+1)) + " words/s)");
|
|
}
|
|
|
|
// query status of old worker thread
|
|
if (worker != null) {
|
|
this.status = "Finished: Selecting chunk " + iteration;
|
|
worker.join();
|
|
if (!worker.success) {
|
|
// if the transfer failed we abort index transfer now
|
|
this.status = "Aborted because of Transfer error:\n" + worker.getStatus();
|
|
|
|
// cleanup. closing all open files
|
|
closeEntities(oldIndexEntities);
|
|
oldIndexEntities = null;
|
|
closeEntities(newIndexEntities);
|
|
newIndexEntities = null;
|
|
|
|
// abort index transfer
|
|
return;
|
|
} else {
|
|
/*
|
|
* If index transfer was done successfully we close all remaining open
|
|
* files that belong to the old index chunk and handover a new chunk
|
|
* to the transfer thread.
|
|
* Addintionally we recalculate the chunk size to optimize performance
|
|
*/
|
|
|
|
this.chunkSize = worker.getChunkSize();
|
|
long transferTime = worker.getTransferTime();
|
|
//TODO: only increase chunk Size if there is free memory left on the server
|
|
|
|
// we need aprox. 73Byte per IndexEntity and an average URL length of 32 char
|
|
//if (ft.freeMemory() < 73*2*100)
|
|
if (transferTime > 60*1000) {
|
|
if (chunkSize>200) chunkSize-=100;
|
|
} else if (selectionTime < transferTime){
|
|
this.chunkSize +=100;
|
|
//chunkSize+=50;
|
|
} else if (selectionTime >= selectionTime){
|
|
if (chunkSize>200) chunkSize-=100;
|
|
}
|
|
|
|
selectionStart = System.currentTimeMillis();
|
|
|
|
// deleting transfered words from index
|
|
if (delete) {
|
|
this.status = "Running: Deleting chunk " + iteration;
|
|
try {
|
|
if (deleteTransferIndexes(oldIndexEntities)) {
|
|
plasmaWordIndexDistribution.this.log.logFine("Deleted all " + oldIndexEntities.length + " transferred whole-word indexes locally");
|
|
transferedEntryCount += idxCount;
|
|
transferedEntityCount += oldIndexEntities.length;
|
|
} else {
|
|
plasmaWordIndexDistribution.this.log.logSevere("Deleted not all transferred whole-word indexes");
|
|
}
|
|
} catch (IOException ee) {
|
|
plasmaWordIndexDistribution.this.log.logSevere("Deletion of indexes not possible:" + ee.getMessage(), ee);
|
|
}
|
|
} else {
|
|
this.closeEntities(oldIndexEntities);
|
|
transferedEntryCount += idxCount;
|
|
transferedEntityCount += oldIndexEntities.length;
|
|
}
|
|
oldIndexEntities = null;
|
|
}
|
|
this.worker = null;
|
|
}
|
|
|
|
// handover chunk to transfer worker
|
|
if (!((newIndexEntities == null) || (newIndexEntities.length == 0))) {
|
|
worker = new transferIndexWorkerThread(seed,newIndexEntities,urlCache,gzipBody,timeout,iteration,idxCount,idxCount,startPointHash,oldStartingPointHash);
|
|
worker.start();
|
|
}
|
|
}
|
|
|
|
// if we reach this point we were aborted by the user or by server shutdown
|
|
if (sb.wordIndex.size() > 0) this.status = "aborted";
|
|
} catch (Exception e) {
|
|
this.status = "Error: " + e.getMessage();
|
|
plasmaWordIndexDistribution.this.log.logWarning("Index transfer to peer " + seed.getName() + ":" + seed.hash + " failed:'" + e.getMessage() + "'",e);
|
|
|
|
} finally {
|
|
if (worker != null) {
|
|
worker.stopIt();
|
|
try {worker.join();}catch(Exception e){}
|
|
// worker = null;
|
|
}
|
|
if (oldIndexEntities != null) closeEntities(oldIndexEntities);
|
|
if (newIndexEntities != null) closeEntities(newIndexEntities);
|
|
|
|
plasmaWordIndexDistribution.this.paused = false;
|
|
}
|
|
}
|
|
|
|
private void closeEntities(plasmaWordIndexEntity[] indexEntities) {
|
|
if ((indexEntities == null)||(indexEntities.length ==0)) return;
|
|
|
|
for (int i = 0; i < indexEntities.length; i++) try {
|
|
indexEntities[i].close();
|
|
} catch (IOException ee) {}
|
|
}
|
|
|
|
private boolean isAborted() {
|
|
if (finished || Thread.currentThread().isInterrupted()) {
|
|
this.status = "aborted";
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
} |