Using TNT4J, activity statistics are not coming properly - tnt4j

Question

I want to log a activity which starts in the scope of a different class and ends in the scope of another class. Using TrackingLogger.getCurrentActivity() throws an exception as there is no activity in memory.Now if I try to store the activity in static HashMap in singleton Class and retrieve it in the other class, the snapshot of activity is showing confusing values. Here is what I am trying to do :
In first Class :
TrackingLogger tracker = TrackingLogger.getInstance(this.getClass()) ;
TrackingActivity activity = tracker.newActivity(); //
activity.start();
CacheUtil.addTrackingActivity("logger",activity); // Store it in static Hashmap in singleton class
In Second Class :
TrackingLogger tracker = TrackingLogger.getInstance(this.getClass());
TrackingActivity activity = CacheUtil.getTrackingActivity("logger");
activity.stop();
tracker.tnt(activity);
this is the snapshot generated :
18:37:39,780 INFO [Nastel TNT4J] {status: 'END' | time: '2014-07-30 13:07:39.778000 UTC' | sev: 'INFO' | type: 'ACTIVITY' | name: 'NOOP' | usec: '72827000' | wait.usec: '21000' | start.time: '2014-07-30 18:36:26.196000 IST' | end.time: '2014-07-30 18:37:39.023000 IST' | pid: '8092' | tid: '90' | id-count: '0' | snap-count: '6' | source: 'APPL=Nastel TNT4J#JVM=8092#FACH13140035#SERVER=FACH13140035#NETADDR=172.25.19.28#DATACENTER=default#GEOADDR=unknown' | track-id: '09d708c4-a6a9-4200-a70f-25c1da838c11'
Snapshot(CPU#Java) {
Count: 4
TotalCpuUsec: 46800.3
TotalCpuUserUsec: 46800.3
}
Snapshot(Thread#Java) {
Count: 69
DaemonCount: 46
StartedCount: 85
PeakCount: 69
BlockedCount: 7
WaitedCount: 0
BlockedUsec: 21000
WaitUsec: 0
}
Snapshot(Memory#Java) {
MaxBytes: 532742144
TotalBytes: 512499712
FreeBytes: 216341712
UsedBytes: 296158000
Usage: 57
}
Snapshot(Copy#GarbageCollector) {
Count: 477
Time: 1940
isValid: true
}
Snapshot(MarkSweepCompact#GarbageCollector) {
Count: 13
Time: 4652
isValid: true
}
Snapshot(Activity#Java) {
TotalCpuUsec: -1778411.4
SlackUsec: 74584411
WallUsec: -1757411.4
BlockedCount: -24
WaitedCount: -1
BlockedUsec: 21000
WaitUsec: 0
OverheadUsec: 24290.215
}}
Am I missing something?? Pls help ..

Answer 1

TrackingLogger.getCurrentActivity() will only return a valid activity if executed within the same thread. The activity handle is stored in thread local. so you most likely calling TrackingLogger.getCurrentActivity() from a different thread and therefore get an exception.
I am not exactly clear where the confusing values are. Can you elaborate?