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session/ip info

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This commit is contained in:
Arndt Brenschede 2021-04-18 19:32:07 +02:00
parent 8206a1ae84
commit 31e761e731
2 changed files with 26 additions and 9 deletions
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24
brouter-server/src/main/java/btools/server/IpAccessMonitor.java
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@ -8,21 +8,31 @@ public class IpAccessMonitor
private static Object sync = new Object();
private static HashMap<String,Long> ipAccess = new HashMap<String,Long>();
private static long MAX_IDLE = 900000; // 15 minutes
private static long CLEANUP_INTERVAL = 10000; // 10 seconds
private static long lastCleanup;
public static boolean touchIpAccess( String ip )
{
long t = System.currentTimeMillis();
synchronized( sync )
{
Long lastTime = ipAccess.get( ip );
if ( lastTime == null || t - lastTime.longValue() > MAX_IDLE )
ipAccess.put( ip, Long.valueOf( t ) );
return lastTime == null || t - lastTime.longValue() > MAX_IDLE;
}
}
public static int getSessionCount()
{
long t = System.currentTimeMillis();
synchronized( sync )
{
if ( t - lastCleanup > CLEANUP_INTERVAL )
{
ipAccess.put( ip, Long.valueOf( t ) );
cleanup(t);
return true; // new session detected
cleanup( t );
lastCleanup = t;
}
ipAccess.put( ip, Long.valueOf( t ) ); // touch existing session
return false;
return ipAccess.size();
}
}