mirror of
https://github.com/yacy/yacy_search_server.git
synced 2024-09-19 00:01:41 +02:00
2861d0888a
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7600 6c8d7289-2bf4-0310-a012-ef5d649a1542
107 lines
4.7 KiB
Java
107 lines
4.7 KiB
Java
// NetworkPicture.java
|
|
// -----------------------
|
|
// part of YaCy
|
|
// (C) by Michael Peter Christen; mc@yacy.net
|
|
// first published on http://www.anomic.de
|
|
// Frankfurt, Germany, 2005
|
|
// Created 08.10.2005
|
|
//
|
|
// $LastChangedDate$
|
|
// $LastChangedRevision$
|
|
// $LastChangedBy$
|
|
//
|
|
// 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
|
|
|
|
import java.util.concurrent.Semaphore;
|
|
|
|
import net.yacy.cora.protocol.RequestHeader;
|
|
import net.yacy.kelondro.logging.Log;
|
|
|
|
import de.anomic.search.Switchboard;
|
|
import de.anomic.search.SwitchboardConstants;
|
|
import de.anomic.server.serverObjects;
|
|
import de.anomic.server.serverSwitch;
|
|
import de.anomic.yacy.graphics.EncodedImage;
|
|
import de.anomic.yacy.graphics.NetworkGraph;
|
|
|
|
/** draw a picture of the yacy network */
|
|
public class NetworkPicture {
|
|
|
|
private static final Semaphore sync = new Semaphore(1, true);
|
|
private static EncodedImage buffer = null;
|
|
private static long lastAccessSeconds = 0;
|
|
|
|
public static EncodedImage respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
|
|
final Switchboard sb = (Switchboard) env;
|
|
final boolean authorized = sb.adminAuthenticated(header) >= 2;
|
|
|
|
long timeSeconds = System.currentTimeMillis() / 1000;
|
|
if (buffer != null && !authorized && timeSeconds - lastAccessSeconds < 2) {
|
|
Log.logInfo("NetworkPicture", "cache hit (1); authorized = " + authorized + ", timeSeconds - lastAccessSeconds = " + (timeSeconds - lastAccessSeconds));
|
|
return buffer;
|
|
}
|
|
|
|
if (buffer != null && sync.availablePermits() == 0) return buffer;
|
|
sync.acquireUninterruptibly();
|
|
|
|
if (buffer != null && !authorized && timeSeconds - lastAccessSeconds < 2) {
|
|
Log.logInfo("NetworkPicture", "cache hit (2); authorized = " + authorized + ", timeSeconds - lastAccessSeconds = " + (timeSeconds - lastAccessSeconds));
|
|
sync.release();
|
|
return buffer;
|
|
}
|
|
|
|
int width = 1024; // 640x480 = VGA, 768x576 = SD/4:3, 1024x576 =SD/16:9 1280x720 = HD/16:9, 1920x1080 = FULL HD/16:9
|
|
int height = 576;
|
|
int passiveLimit = 1440; // minutes; 1440 = 1 day; 720 = 12 hours; 1440 = 24 hours, 10080 = 1 week;
|
|
int potentialLimit = 1440;
|
|
int maxCount = 1000;
|
|
String bgcolor = NetworkGraph.COL_BACKGROUND;
|
|
boolean corona = true;
|
|
int coronaangle = 0;
|
|
long communicationTimeout = -1;
|
|
|
|
if (post != null) {
|
|
width = post.getInt("width", width);
|
|
height = post.getInt("height", height);
|
|
passiveLimit = post.getInt("pal", passiveLimit);
|
|
potentialLimit = post.getInt("pol", potentialLimit);
|
|
maxCount = post.getInt("max", maxCount);
|
|
corona = post.getBoolean("corona", true);
|
|
coronaangle = (corona) ? post.getInt("coronaangle", 0) : -1;
|
|
communicationTimeout = post.getLong("ct", -1);
|
|
bgcolor = post.get("bgcolor", bgcolor);
|
|
}
|
|
|
|
//too small values lead to an error, too big to huge CPU/memory consumption, resulting in possible DOS.
|
|
if (width < 320 ) width = 320;
|
|
if (width > 1920) width = 1920;
|
|
if (height < 240) height = 240;
|
|
if (height > 1080) height = 1080;
|
|
if (!authorized) {
|
|
width = Math.min(1024, width);
|
|
height = Math.min(576, height);
|
|
}
|
|
if (passiveLimit > 1000000) passiveLimit = 1000000;
|
|
if (potentialLimit > 1000000) potentialLimit = 1000000;
|
|
if (maxCount > 10000) maxCount = 10000;
|
|
buffer = new EncodedImage(NetworkGraph.getNetworkPicture(sb.peers, 10000, width, height, passiveLimit, potentialLimit, maxCount, coronaangle, communicationTimeout, env.getConfig(SwitchboardConstants.NETWORK_NAME, "unspecified"), env.getConfig("network.unit.description", "unspecified"), bgcolor).getImage(), "png");
|
|
lastAccessSeconds = System.currentTimeMillis() / 1000;
|
|
|
|
sync.release();
|
|
return buffer;
|
|
}
|
|
|
|
}
|