mirror of
https://github.com/yacy/yacy_search_server.git
synced 2024-09-21 00:00:13 +02:00
fa90c3ca7a
- changed index collection process: indexes are not first flushed to indexEntity, but now collected directly from ram cache and assortments git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1489 6c8d7289-2bf4-0310-a012-ef5d649a1542
924 lines
43 KiB
Java
924 lines
43 KiB
Java
//plasmaWordIndexDistribution.java
|
|
//-------------------------------------------
|
|
//(C) by Michael Peter Christen; mc@anomic.de
|
|
//first published on http://www.anomic.de
|
|
//Frankfurt, Germany, 2005
|
|
//
|
|
// $LastChangedDate$
|
|
// $LastChangedRevision$
|
|
// $LastChangedBy$
|
|
//
|
|
//This program is free software; you can redistribute it and/or modify
|
|
//it under the terms of the GNU General Public License as published by
|
|
//the Free Software Foundation; either version 2 of the License, or
|
|
//(at your option) any later version.
|
|
//
|
|
//This program is distributed in the hope that it will be useful,
|
|
//but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
//GNU General Public License for more details.
|
|
//
|
|
//You should have received a copy of the GNU General Public License
|
|
//along with this program; if not, write to the Free Software
|
|
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
//
|
|
//Using this software in any meaning (reading, learning, copying, compiling,
|
|
//running) means that you agree that the Author(s) is (are) not responsible
|
|
//for cost, loss of data or any harm that may be caused directly or indirectly
|
|
//by usage of this softare or this documentation. The usage of this software
|
|
//is on your own risk. The installation and usage (starting/running) of this
|
|
//software may allow other people or application to access your computer and
|
|
//any attached devices and is highly dependent on the configuration of the
|
|
//software which must be done by the user of the software; the author(s) is
|
|
//(are) also not responsible for proper configuration and usage of the
|
|
//software, even if provoked by documentation provided together with
|
|
//the software.
|
|
//
|
|
//Any changes to this file according to the GPL as documented in the file
|
|
//gpl.txt aside this file in the shipment you received can be done to the
|
|
//lines that follows this copyright notice here, but changes must not be
|
|
//done inside the copyright notive above. A re-distribution must contain
|
|
//the intact and unchanged copyright notice.
|
|
//Contributions and changes to the program code must be marked as such.
|
|
|
|
package de.anomic.plasma;
|
|
|
|
import java.io.IOException;
|
|
import java.util.ArrayList;
|
|
import java.util.Enumeration;
|
|
import java.util.Iterator;
|
|
import java.util.HashMap;
|
|
import de.anomic.yacy.yacyCore;
|
|
import de.anomic.yacy.yacySeed;
|
|
import de.anomic.yacy.yacySeedDB;
|
|
import de.anomic.yacy.yacyClient;
|
|
import de.anomic.yacy.yacyDHTAction;
|
|
import de.anomic.server.serverCodings;
|
|
import de.anomic.server.logging.serverLog;
|
|
import de.anomic.kelondro.kelondroBase64Order;
|
|
import de.anomic.kelondro.kelondroException;
|
|
|
|
public final class plasmaWordIndexDistribution {
|
|
|
|
// distributes parts of the index to other peers
|
|
// stops as soon as an error occurrs
|
|
|
|
private int indexCount;
|
|
private int juniorPeerCount, seniorPeerCount;
|
|
private long maxTime;
|
|
|
|
private final plasmaURLPool urlPool;
|
|
private final plasmaWordIndex wordIndex;
|
|
final serverLog log;
|
|
boolean paused = false;
|
|
private boolean enabled;
|
|
private boolean enabledWhileCrawling;
|
|
private boolean closed;
|
|
private boolean gzipBody4Distribution;
|
|
private int timeout4Distribution;
|
|
public transferIndexThread transferIdxThread = null;
|
|
|
|
public plasmaWordIndexDistribution(
|
|
plasmaURLPool urlPool,
|
|
plasmaWordIndex wordIndex,
|
|
serverLog log,
|
|
boolean enable,
|
|
boolean enabledWhileCrawling,
|
|
boolean gzipBody,
|
|
int timeout
|
|
) {
|
|
this.urlPool = urlPool;
|
|
this.wordIndex = wordIndex;
|
|
this.enabled = enable;
|
|
this.enabledWhileCrawling = enabledWhileCrawling;
|
|
this.log = log;
|
|
this.closed = false;
|
|
setCounts(100 /*indexCount*/, 1 /*juniorPeerCount*/, 3 /*seniorPeerCount*/, 8000);
|
|
this.gzipBody4Distribution = gzipBody;
|
|
this.timeout4Distribution = timeout;
|
|
}
|
|
|
|
public void enable() {
|
|
enabled = true;
|
|
}
|
|
|
|
public void disable() {
|
|
enabled = false;
|
|
}
|
|
|
|
public void enableWhileCrawling() {
|
|
this.enabledWhileCrawling = true;
|
|
}
|
|
|
|
public void disableWhileCrawling() {
|
|
this.enabledWhileCrawling = false;
|
|
}
|
|
|
|
public void close() {
|
|
closed = true;
|
|
if (transferIdxThread != null) {
|
|
stopTransferWholeIndex(false);
|
|
}
|
|
}
|
|
|
|
public boolean job() {
|
|
|
|
if (this.closed) {
|
|
log.logFine("no DHT distribution: closed");
|
|
return false;
|
|
}
|
|
if (yacyCore.seedDB == null) {
|
|
log.logFine("no DHT distribution: seedDB == null");
|
|
return false;
|
|
}
|
|
if (yacyCore.seedDB.mySeed == null) {
|
|
log.logFine("no DHT distribution: mySeed == null");
|
|
return false;
|
|
}
|
|
if (yacyCore.seedDB.mySeed.isVirgin()) {
|
|
log.logFine("no DHT distribution: status is virgin");
|
|
return false;
|
|
}
|
|
if (!(enabled)) {
|
|
log.logFine("no DHT distribution: not enabled");
|
|
return false;
|
|
}
|
|
if (paused) {
|
|
log.logFine("no DHT distribution: paused");
|
|
return false;
|
|
}
|
|
if (urlPool.loadedURL.size() < 10) {
|
|
log.logFine("no DHT distribution: loadedURL.size() = " + urlPool.loadedURL.size());
|
|
return false;
|
|
}
|
|
if (wordIndex.size() < 100) {
|
|
log.logFine("no DHT distribution: not enough words - wordIndex.size() = " + wordIndex.size());
|
|
return false;
|
|
}
|
|
if ((!enabledWhileCrawling) && (urlPool.noticeURL.stackSize() > 0)) {
|
|
log.logFine("no DHT distribution: crawl in progress - noticeURL.stackSize() = " + urlPool.noticeURL.stackSize());
|
|
return false;
|
|
}
|
|
|
|
// do the transfer
|
|
int peerCount = (yacyCore.seedDB.mySeed.isJunior()) ? juniorPeerCount : seniorPeerCount;
|
|
long starttime = System.currentTimeMillis();
|
|
int transferred = performTransferIndex(indexCount, peerCount, true);
|
|
|
|
if (transferred <= 0) {
|
|
log.logFine("no word distribution: transfer failed");
|
|
return false;
|
|
}
|
|
|
|
// adopt transfer count
|
|
if ((System.currentTimeMillis() - starttime) > (maxTime * peerCount))
|
|
indexCount--;
|
|
else
|
|
indexCount++;
|
|
if (indexCount < 50) indexCount = 50;
|
|
|
|
// show success
|
|
return true;
|
|
|
|
}
|
|
|
|
public void setCounts(int indexCount, int juniorPeerCount, int seniorPeerCount, long maxTimePerTransfer) {
|
|
this.maxTime = maxTimePerTransfer;
|
|
this.indexCount = indexCount;
|
|
if (indexCount < 30) indexCount = 30;
|
|
this.juniorPeerCount = juniorPeerCount;
|
|
this.seniorPeerCount = seniorPeerCount;
|
|
}
|
|
|
|
public int performTransferIndex(int indexCount, int peerCount, boolean delete) {
|
|
if ((yacyCore.seedDB == null) || (yacyCore.seedDB.sizeConnected() == 0)) return -1;
|
|
|
|
// collect index
|
|
String startPointHash = selectTransferStart();
|
|
log.logFine("Selected hash " + startPointHash + " as start point for index distribution, distance = " + yacyDHTAction.dhtDistance(yacyCore.seedDB.mySeed.hash, startPointHash));
|
|
Object[] selectResult = selectTransferContainers(startPointHash, indexCount);
|
|
plasmaWordIndexEntryContainer[] indexContainers = (plasmaWordIndexEntryContainer[]) selectResult[0];
|
|
HashMap urlCache = (HashMap) selectResult[1]; // String (url-hash) / plasmaCrawlLURL.Entry
|
|
if ((indexContainers == null) || (indexContainers.length == 0)) {
|
|
log.logFine("No index available for index transfer, hash start-point " + startPointHash);
|
|
return -1;
|
|
}
|
|
// count the indexes again, can be smaller as expected
|
|
indexCount = 0;
|
|
for (int i = 0; i < indexContainers.length; i++) {
|
|
indexCount += indexContainers[i].size();
|
|
}
|
|
if (indexCount < 50) {
|
|
log.logFine("Too few (" + indexCount + ") indexes selected for transfer.");
|
|
closeTransferIndexes(indexContainers);
|
|
return -1; // failed
|
|
}
|
|
|
|
// find start point for DHT-selection
|
|
String keyhash = indexContainers[indexContainers.length - 1].wordHash(); // DHT targets must have greater hashes
|
|
|
|
// find a list of DHT-peers
|
|
yacySeed[] seeds = new yacySeed[peerCount + 10];
|
|
int hc0 = 0;
|
|
double ownDistance = Math.min(yacyDHTAction.dhtDistance(yacyCore.seedDB.mySeed.hash, indexContainers[0].wordHash()),
|
|
yacyDHTAction.dhtDistance(yacyCore.seedDB.mySeed.hash, indexContainers[indexContainers.length - 1].wordHash()));
|
|
double maxDistance = Math.min(ownDistance, 0.4);
|
|
synchronized (yacyCore.dhtAgent) {
|
|
double avdist;
|
|
Enumeration e = yacyCore.dhtAgent.getAcceptRemoteIndexSeeds(keyhash);
|
|
while ((e.hasMoreElements()) && (hc0 < seeds.length)) {
|
|
if (closed) {
|
|
log.logSevere("Index distribution interrupted by close, nothing deleted locally.");
|
|
return -1; // interrupted
|
|
}
|
|
seeds[hc0] = (yacySeed) e.nextElement();
|
|
if (seeds[hc0] != null) {
|
|
avdist = Math.max(yacyDHTAction.dhtDistance(seeds[hc0].hash, indexContainers[0].wordHash()),
|
|
yacyDHTAction.dhtDistance(seeds[hc0].hash, indexContainers[indexContainers.length - 1].wordHash()));
|
|
if (avdist < maxDistance) {
|
|
log.logInfo("Selected " + ((hc0 < peerCount) ? "primary" : "reserve") + " DHT target peer " + seeds[hc0].getName() + ":" + seeds[hc0].hash + ", distance = " + avdist);
|
|
hc0++;
|
|
}
|
|
}
|
|
}
|
|
e = null; // finish enumeration
|
|
}
|
|
|
|
if (hc0 < peerCount) {
|
|
log.logWarning("found not enough (" + hc0 + ") peers for distribution");
|
|
closeTransferIndexes(indexContainers);
|
|
return -1; // failed
|
|
}
|
|
|
|
// send away the indexes to all these indexes
|
|
String error;
|
|
String peerNames = "";
|
|
long start;
|
|
int hc1 = 0;
|
|
for (int i = 0; i < hc0; i++) {
|
|
if (closed) {
|
|
log.logSevere("Index distribution interrupted by close, nothing deleted locally.");
|
|
return -1; // interrupted
|
|
}
|
|
start = System.currentTimeMillis();
|
|
error = yacyClient.transferIndex(
|
|
seeds[i],
|
|
indexContainers,
|
|
urlCache,
|
|
this.gzipBody4Distribution,
|
|
this.timeout4Distribution);
|
|
if (error == null) {
|
|
log.logInfo("Index transfer of " + indexCount + " words [" + indexContainers[0].wordHash() + " .. " + indexContainers[indexContainers.length - 1].wordHash() + "] to peer " + seeds[i].getName() + ":" + seeds[i].hash + " in " + ((System.currentTimeMillis() - start) / 1000)
|
|
+ " seconds successfull (" + (1000 * indexCount / (System.currentTimeMillis() - start + 1)) + " words/s)");
|
|
peerNames += ", " + seeds[i].getName();
|
|
hc1++;
|
|
} else {
|
|
log.logWarning("Index transfer to peer " + seeds[i].getName() + ":" + seeds[i].hash + " failed:'" + error + "', disconnecting peer");
|
|
yacyCore.peerActions.peerDeparture(seeds[i]);
|
|
}
|
|
if (hc1 >= peerCount) break;
|
|
}
|
|
if (peerNames.length() > 0) peerNames = peerNames.substring(2); // remove comma
|
|
|
|
// clean up and finish with deletion of indexes
|
|
if (hc1 >= peerCount) {
|
|
// success
|
|
if (delete) {
|
|
int deletedURLs = deleteTransferIndexes(indexContainers);
|
|
log.logFine("Deleted from " + indexContainers.length + " transferred RWIs locally, removed " + deletedURLs + " URL references");
|
|
return indexCount;
|
|
} else {
|
|
// simply close the indexEntities
|
|
closeTransferIndexes(indexContainers);
|
|
}
|
|
return indexCount;
|
|
} else {
|
|
log.logSevere("Index distribution failed. Too few peers (" + hc1 + ") received the index, not deleted locally.");
|
|
// simply close the indexEntities
|
|
closeTransferIndexes(indexContainers);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
private String selectTransferStart() {
|
|
String startPointHash;
|
|
// first try to select with increasing probality a good start point
|
|
if (Math.round(Math.random() * 6) != 4) for (int i = 9; i > 0; i--) {
|
|
startPointHash = kelondroBase64Order.enhancedCoder.encode(serverCodings.encodeMD5Raw(Long.toString(i + System.currentTimeMillis()))).substring(2, 2 + yacySeedDB.commonHashLength);
|
|
if (yacyDHTAction.dhtDistance(yacyCore.seedDB.mySeed.hash, startPointHash) > ((double) i / (double) 10)) return startPointHash;
|
|
}
|
|
// if that fails, take simply the best start point (this is usually avoided, since that leads to always the same target peers)
|
|
startPointHash = yacyCore.seedDB.mySeed.hash.substring(0, 11) + "z";
|
|
return startPointHash;
|
|
}
|
|
|
|
Object[] /* of {plasmaWordIndexEntryContainer[], HashMap(String, plasmaCrawlLURL.Entry)}*/
|
|
selectTransferContainers(String hash, int count) {
|
|
// the hash is a start hash from where the indexes are picked
|
|
ArrayList tmpContainers = new ArrayList(count);
|
|
String nexthash = "";
|
|
try {
|
|
Iterator wordHashIterator = this.wordIndex.wordHashes(hash, true, true);
|
|
plasmaWordIndexEntryContainer indexContainer;
|
|
Iterator urlIter;
|
|
plasmaWordIndexEntry indexEntry;
|
|
plasmaCrawlLURL.Entry lurl;
|
|
int notBoundCounter = 0;
|
|
final HashMap knownURLs = new HashMap();
|
|
while (
|
|
(count > 0) &&
|
|
(wordHashIterator.hasNext()) &&
|
|
((nexthash = (String) wordHashIterator.next()) != null) &&
|
|
(nexthash.trim().length() > 0) &&
|
|
((tmpContainers.size() == 0) ||
|
|
(yacyDHTAction.dhtDistance(nexthash, ((plasmaWordIndexEntryContainer)tmpContainers.get(0)).wordHash()) < 0.2))
|
|
) {
|
|
// make an on-the-fly entity and insert values
|
|
indexContainer = this.wordIndex.getContainer(nexthash, true, 10000);
|
|
try {
|
|
urlIter = indexContainer.entries();
|
|
// iterate over indexes to fetch url entries and store them in the urlCache
|
|
while ((urlIter.hasNext()) && (count > 0)) {
|
|
indexEntry = (plasmaWordIndexEntry) urlIter.next();
|
|
try {
|
|
lurl = this.urlPool.loadedURL.getEntry(indexEntry.getUrlHash(), indexEntry);
|
|
if ((lurl == null) || (lurl.url() == null)) {
|
|
notBoundCounter++;
|
|
urlIter.remove();
|
|
this.wordIndex.removeEntries(nexthash, new String[]{indexEntry.getUrlHash()}, true);
|
|
} else {
|
|
knownURLs.put(indexEntry.getUrlHash(), lurl);
|
|
count--;
|
|
}
|
|
} catch (IOException e) {
|
|
notBoundCounter++;
|
|
urlIter.remove();
|
|
this.wordIndex.removeEntries(nexthash, new String[]{indexEntry.getUrlHash()}, true);
|
|
}
|
|
}
|
|
|
|
// remove all remaining; we have enough
|
|
while (urlIter.hasNext()) {
|
|
indexEntry = (plasmaWordIndexEntry) urlIter.next();
|
|
urlIter.remove();
|
|
}
|
|
|
|
// use whats left
|
|
this.log.logFine("Selected partial index (" + indexContainer.size() + " from " + this.wordIndex.indexSize(nexthash) +" URLs, " + notBoundCounter + " not bound) for word " + indexContainer.wordHash());
|
|
tmpContainers.add(indexContainer);
|
|
} catch (kelondroException e) {
|
|
this.log.logSevere("plasmaWordIndexDistribution/2: deleted DB for word " + nexthash, e);
|
|
this.wordIndex.deleteIndex(nexthash);
|
|
}
|
|
}
|
|
// transfer to array
|
|
plasmaWordIndexEntryContainer[] entryContainers = (plasmaWordIndexEntryContainer[]) tmpContainers.toArray(new plasmaWordIndexEntryContainer[tmpContainers.size()]);
|
|
return new Object[]{entryContainers, knownURLs};
|
|
} catch (kelondroException e) {
|
|
this.log.logSevere("selectTransferIndexes database corrupted: " + e.getMessage(), e);
|
|
return new Object[]{new plasmaWordIndexEntity[0], new HashMap(0)};
|
|
}
|
|
}
|
|
|
|
void closeTransferIndex(plasmaWordIndexEntity indexEntity) throws IOException {
|
|
Object migrationStatus;
|
|
indexEntity.close();
|
|
try {
|
|
String wordhash = indexEntity.wordHash();
|
|
migrationStatus = wordIndex.migrateWords2Assortment(wordhash);
|
|
if (migrationStatus instanceof Integer) {
|
|
int migrationCount = ((Integer) migrationStatus).intValue();
|
|
if (migrationCount == 0)
|
|
log.logFine("SKIPPED " + wordhash + ": empty");
|
|
else if (migrationCount > 0)
|
|
log.logFine("MIGRATED " + wordhash + ": " + migrationCount + " entries");
|
|
else
|
|
log.logFine("REVERSED " + wordhash + ": " + (-migrationCount) + " entries");
|
|
} else if (migrationStatus instanceof String) {
|
|
log.logFine("SKIPPED " + wordhash + ": " + migrationStatus);
|
|
}
|
|
} catch (Exception e) {
|
|
log.logWarning("EXCEPTION: ", e);
|
|
}
|
|
}
|
|
|
|
void closeTransferIndexes(plasmaWordIndexEntity[] indexEntities) {
|
|
for (int i = 0; i < indexEntities.length; i++) try {
|
|
closeTransferIndex(indexEntities[i]);
|
|
} catch (IOException ee) {}
|
|
}
|
|
|
|
void closeTransferIndexes(plasmaWordIndexEntryContainer[] indexContainers) {
|
|
for (int i = 0; i < indexContainers.length; i++) {
|
|
indexContainers[i] = null;
|
|
}
|
|
}
|
|
|
|
int deleteTransferIndexes(plasmaWordIndexEntryContainer[] indexContainers) {
|
|
Iterator urlIter;
|
|
plasmaWordIndexEntry indexEntry;
|
|
String[] urlHashes;
|
|
int count = 0;
|
|
for (int i = 0; i < indexContainers.length; i++) {
|
|
// delete entries separately
|
|
int c = 0;
|
|
urlHashes = new String[indexContainers[i].size()];
|
|
urlIter = indexContainers[i].entries();
|
|
while (urlIter.hasNext()) {
|
|
indexEntry = (plasmaWordIndexEntry) urlIter.next();
|
|
urlHashes[c++] = indexEntry.getUrlHash();
|
|
}
|
|
count += wordIndex.removeEntries(indexContainers[i].wordHash(), urlHashes, true);
|
|
log.logFine("Deleted partial index (" + c + " URLs) for word " + indexContainers[i].wordHash() + "; " + this.wordIndex.indexSize(indexContainers[i].wordHash()) + " entries left");
|
|
indexContainers[i] = null;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
boolean deleteTransferIndexes(plasmaWordIndexEntity[] indexEntities) throws IOException {
|
|
Iterator urlIter;
|
|
plasmaWordIndexEntry indexEntry;
|
|
plasmaWordIndexEntity indexEntity;
|
|
String[] urlHashes;
|
|
int sz;
|
|
boolean success = true;
|
|
for (int i = 0; i < indexEntities.length; i++) {
|
|
if (indexEntities[i].isTMPEntity()) {
|
|
// delete entries separately
|
|
int c = 0;
|
|
urlHashes = new String[indexEntities[i].size()];
|
|
urlIter = indexEntities[i].elements(true);
|
|
while (urlIter.hasNext()) {
|
|
indexEntry = (plasmaWordIndexEntry) urlIter.next();
|
|
urlHashes[c++] = indexEntry.getUrlHash();
|
|
}
|
|
wordIndex.removeEntries(indexEntities[i].wordHash(), urlHashes, true);
|
|
indexEntity = wordIndex.getEntity(indexEntities[i].wordHash(), true, -1);
|
|
sz = indexEntity.size();
|
|
// indexEntity.close();
|
|
closeTransferIndex(indexEntity);
|
|
log.logFine("Deleted partial index (" + c + " URLs) for word " + indexEntities[i].wordHash() + "; " + sz + " entries left");
|
|
// end debug
|
|
indexEntities[i].close();
|
|
} else {
|
|
// delete complete file
|
|
if (indexEntities[i].deleteComplete()) {
|
|
indexEntities[i].close();
|
|
} else {
|
|
indexEntities[i].close();
|
|
// have another try...
|
|
if (!(plasmaWordIndexEntity.wordHash2path(wordIndex.getRoot(), indexEntities[i].wordHash()).delete())) {
|
|
success = false;
|
|
log.logSevere("Could not delete whole index for word " + indexEntities[i].wordHash());
|
|
}
|
|
}
|
|
}
|
|
indexEntities[i] = null;
|
|
}
|
|
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 gzipBody4Transfer = false;
|
|
private int timeout4Transfer = 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;
|
|
plasmaWordIndexEntryContainer[] indexContainers;
|
|
|
|
// other fields
|
|
HashMap urlCache;
|
|
|
|
public transferIndexWorkerThread(
|
|
yacySeed seed,
|
|
plasmaWordIndexEntryContainer[] indexContainers,
|
|
HashMap urlCache,
|
|
boolean gzipBody,
|
|
int timeout,
|
|
long iteration,
|
|
int idxCount,
|
|
int chunkSize,
|
|
String endPointHash,
|
|
String startPointHash) {
|
|
super(new ThreadGroup("TransferIndexThreadGroup"),"TransferIndexWorker_" + seed.getName());
|
|
this.gzipBody4Transfer = gzipBody;
|
|
this.timeout4Transfer = timeout;
|
|
this.iteration = iteration;
|
|
this.seed = seed;
|
|
this.indexContainers = indexContainers;
|
|
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, indexContainers, urlCache, gzipBody4Transfer, timeout4Transfer);
|
|
if (error == null) {
|
|
// words successfully transfered
|
|
transferTime = System.currentTimeMillis() - start;
|
|
plasmaWordIndexDistribution.this.log.logInfo("Index transfer of " + idxCount + " words [" + indexContainers[0].wordHash() + " .. " + indexContainers[indexContainers.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 gzipBody4Transfer = false;
|
|
private int timeout4Transfer = 60000;
|
|
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 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.gzipBody4Transfer = "true".equalsIgnoreCase(sb.getConfig("indexTransfer.gzipBody","false"));
|
|
this.timeout4Transfer = (int) sb.getConfigLong("indexTransfer.timeout",60000);
|
|
//this.maxOpenFiles4Transfer = (int) sb.getConfigLong("indexTransfer.maxOpenFiles",800);
|
|
}
|
|
|
|
public void run() {
|
|
performTransferWholeIndex();
|
|
}
|
|
|
|
public void stopIt(boolean wait) throws InterruptedException {
|
|
this.finished = true;
|
|
if (wait) 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() {
|
|
long transferTime = System.currentTimeMillis() - startingTime;
|
|
if (transferTime <= 0) transferTime = 1;
|
|
return (int) ((1000 * transferedEntryCount) / transferTime);
|
|
}
|
|
|
|
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() {
|
|
plasmaWordIndexEntryContainer[] newIndexContainers = null, oldIndexContainers = 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;
|
|
|
|
while (!finished && !Thread.currentThread().isInterrupted()) {
|
|
iteration++;
|
|
int idxCount = 0;
|
|
selectionStart = System.currentTimeMillis();
|
|
oldIndexContainers = newIndexContainers;
|
|
|
|
// selecting 500 words to transfer
|
|
this.status = "Running: Selecting chunk " + iteration;
|
|
Object[] selectResult = selectTransferContainers(this.startPointHash, this.chunkSize);
|
|
newIndexContainers = (plasmaWordIndexEntryContainer[]) selectResult[0];
|
|
HashMap urlCache = (HashMap) selectResult[1]; // String (url-hash) / plasmaCrawlLURL.Entry
|
|
|
|
/* 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 ((newIndexContainers == null) || (newIndexContainers.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 < newIndexContainers.length; i++) idxCount += newIndexContainers[i].size();
|
|
|
|
// getting start point for next DHT-selection
|
|
oldStartingPointHash = startPointHash;
|
|
startPointHash = newIndexContainers[newIndexContainers.length - 1].wordHash(); // DHT targets must have greater hashes
|
|
|
|
selectionEnd = System.currentTimeMillis();
|
|
selectionTime = selectionEnd - selectionStart;
|
|
plasmaWordIndexDistribution.this.log.logInfo("Index selection of " + idxCount + " words [" + newIndexContainers[0].wordHash() + " .. " + newIndexContainers[newIndexContainers.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
|
|
closeContainers(oldIndexContainers);
|
|
oldIndexContainers = null;
|
|
closeContainers(newIndexContainers);
|
|
newIndexContainers = 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;
|
|
int urlReferences = deleteTransferIndexes(oldIndexContainers);
|
|
plasmaWordIndexDistribution.this.log.logFine("Deleted from " + oldIndexContainers.length + " transferred RWIs locally " + urlReferences + " URL references");
|
|
transferedEntryCount += idxCount;
|
|
transferedEntityCount += oldIndexContainers.length;
|
|
} else {
|
|
this.closeContainers(oldIndexContainers);
|
|
transferedEntryCount += idxCount;
|
|
transferedEntityCount += oldIndexContainers.length;
|
|
}
|
|
oldIndexContainers = null;
|
|
}
|
|
this.worker = null;
|
|
}
|
|
|
|
// handover chunk to transfer worker
|
|
if (!((newIndexContainers == null) || (newIndexContainers.length == 0))) {
|
|
worker = new transferIndexWorkerThread(seed,newIndexContainers,urlCache,gzipBody4Transfer,timeout4Transfer,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 (oldIndexContainers != null) closeContainers(oldIndexContainers);
|
|
if (newIndexContainers != null) closeContainers(newIndexContainers);
|
|
|
|
plasmaWordIndexDistribution.this.paused = false;
|
|
}
|
|
}
|
|
|
|
private void closeContainers(plasmaWordIndexEntryContainer[] indexContainers) {
|
|
if ((indexContainers == null)||(indexContainers.length ==0)) return;
|
|
|
|
for (int i = 0; i < indexContainers.length; i++) {
|
|
indexContainers[i] = null;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|