// plasmaRankingDistribution.java
// -------------------------------------------
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2005
// created 9.11.2005
//
// $LastChangedDate: 2005-11-04 14:41:51 +0100 (Fri, 04 Nov 2005) $
// $LastChangedRevision: 1026 $
// $LastChangedBy: borg-0300 $
//
// 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.io.File;
import java.util.Random;
import java.util.StringTokenizer;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacyClient;
import de.anomic.yacy.yacySeed;
import de.anomic.yacy.yacyVersion;
import de.anomic.server.logging.serverLog;
import de.anomic.server.serverFileUtils;
public final class plasmaRankingDistribution {
public static final String CR_OWN = "GLOBAL/010_owncr";
public static final String CR_OTHER = "GLOBAL/014_othercr/";
public static final int METHOD_NONE = 0;
public static final int METHOD_ANYSENIOR = 1;
public static final int METHOD_ANYPRINCIPAL = 2;
public static final int METHOD_MIXEDSENIOR = 9;
public static final int METHOD_MIXEDPRINCIPAL = 10;
public static final int METHOD_FIXEDADDRESS = 99;
private final serverLog log;
private File sourcePath; // where to load cr-files
private int method; // of peer selection
private int percentage; // to select any other peer
private String address[]; // of fixed other peer
private static Random random = new Random(System.currentTimeMillis());
public plasmaRankingDistribution(serverLog log, File sourcePath, int method, int percentage, String addresses) {
this.log = log;
this.sourcePath = sourcePath;
this.method = method;
this.percentage = percentage;
StringTokenizer st = new StringTokenizer(addresses, ",");
int c = 0; while (st.hasMoreTokens()) {st.nextToken(); c++;}
st = new StringTokenizer(addresses, ",");
this.address = new String[c];
c = 0;
while (st.hasMoreTokens()) {this.address[c++] = st.nextToken();}
}
public plasmaRankingDistribution(serverLog log, File sourcePath, int method, int percentage, String address[]) {
this.log = log;
this.sourcePath = sourcePath;
this.method = method;
this.percentage = percentage;
this.address = address;
}
public void setMethod(int method, int percentage, String address[]) {
this.method = method;
this.percentage = percentage;
this.address = address;
}
public int size() {
if ((sourcePath.exists()) && (sourcePath.isDirectory())) return sourcePath.list().length; else return 0;
}
public boolean transferRanking(int count) {
if (method == METHOD_NONE) {
log.logFine("no ranking distribution: no transfer method given");
return false;
}
if (yacyCore.seedDB == null) {
log.logFine("no ranking distribution: seedDB == null");
return false;
}
if (yacyCore.seedDB.mySeed == null) {
log.logFine("no ranking distribution: mySeed == null");
return false;
}
if (yacyCore.seedDB.mySeed.isVirgin()) {
log.logFine("no ranking distribution: status is virgin");
return false;
}
String[] outfiles = sourcePath.list();
if (outfiles == null) {
log.logFine("no ranking distribution: source path does not exist");
return false;
}
if (outfiles.length == 0) {
log.logFine("no ranking distribution: source path does not contain any file");
return false;
}
if (outfiles.length > count) count = outfiles.length;
File crfile = null;
for (int i = 0; i < count; i++) {
crfile = new File(sourcePath, outfiles[i]);
if ((method == METHOD_ANYSENIOR) || (method == METHOD_ANYPRINCIPAL)) {
transferRankingAnySeed(crfile, 5);
}
if (method == METHOD_FIXEDADDRESS) {
transferRankingAddress(crfile);
}
if ((method == METHOD_MIXEDSENIOR) || (method == METHOD_MIXEDPRINCIPAL)) {
if (random.nextInt(100) > percentage) {
if (!(transferRankingAddress(crfile))) transferRankingAnySeed(crfile, 5);
} else {
if (!(transferRankingAnySeed(crfile, 5))) transferRankingAddress(crfile);
}
}
}
log.logFine("no ranking distribution: no target available");
return false;
}
private boolean transferRankingAnySeed(File crfile, int trycount) {
yacySeed target = null;
for (int j = 0; j < trycount; j++) {
target = yacyCore.seedDB.anySeedVersion(yacyVersion.YACY_ACCEPTS_RANKING_TRANSMISSION);
if (target == null) continue;
String targetaddress = target.getAddress();
if (transferRankingAddress(crfile, targetaddress)) return true;
}
return false;
}
private boolean transferRankingAddress(File crfile) {
// try all addresses
for (int i = 0; i < address.length; i++) {
if (transferRankingAddress(crfile, address[i])) return true;
}
return false;
}
private boolean transferRankingAddress(File crfile, String address) {
// do the transfer
long starttime = System.currentTimeMillis();
String result = "unknown";
try {
byte[] b = serverFileUtils.read(crfile);
result = yacyClient.transfer(address, crfile.getName(), b);
if (result == null) {
log.logInfo("RankingDistribution - transmitted file " + crfile + " to " + address + " successfully in " + ((System.currentTimeMillis() - starttime) / 1000) + " seconds");
crfile.delete(); // the file is not needed any more locally
} else {
log.logInfo("RankingDistribution - error transmitting file " + crfile + " to " + address + ": " + result);
}
} catch (IOException e) {
log.logInfo("RankingDistribution - could not read file " + crfile + ": " + e.getMessage());
result = "input file error: " + e.getMessage();
}
// show success
return result == null;
}
}