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fix for stretched network image

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This commit is contained in:
Michael Christen 2011-12-06 02:22:56 +01:00
parent 762e0ecfb6
commit 89dc04115f
1 changed files with 59 additions and 19 deletions
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78
htroot/NetworkPicture.java
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@ -36,27 +36,39 @@ import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
/** draw a picture of the yacy network */
public class NetworkPicture {
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) {
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;
final long timeSeconds = System.currentTimeMillis() / 1000;
if (buffer != null && !authorized && timeSeconds - lastAccessSeconds < 2) {
Log.logInfo("NetworkPicture", "cache hit (1); authorized = " + authorized + ", timeSeconds - lastAccessSeconds = " + (timeSeconds - lastAccessSeconds));
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;
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));
if ( buffer != null && !authorized && timeSeconds - lastAccessSeconds < 2 ) {
Log.logInfo("NetworkPicture", "cache hit (2); authorized = "
+ authorized
+ ", timeSeconds - lastAccessSeconds = "
+ (timeSeconds - lastAccessSeconds));
sync.release();
return buffer;
}
@ -72,7 +84,7 @@ public class NetworkPicture {
long communicationTimeout = -1;
int cyc = 0;
if (post != null) {
if ( post != null ) {
width = post.getInt("width", width);
height = post.getInt("height", height);
passiveLimit = post.getInt("pal", passiveLimit);
@ -86,18 +98,46 @@ public class NetworkPicture {
}
//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 ( width < 320 ) {
width = 320;
}
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, cyc).getImage(), "png");
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(1024, 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,
cyc).getImage(), "png");
lastAccessSeconds = System.currentTimeMillis() / 1000;
sync.release();