[slf4j-dev] [Bug 141] New: Need programmatic access to nested profiler or stopwatch

[bugzilla-daemon at pixie.qos.ch]

http://bugzilla.slf4j.org/show_bug.cgi?id=141

           Summary: Need programmatic access to nested profiler or stopwatch
           Product: SLF4J
           Version: 1.5.x
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: slf4j-ext
        AssignedTo: dev at slf4j.org
        ReportedBy: lindelof at ieee.org


I'd like to use Profiler to log the execution times of different parts of my
(web)application, but I need to write out the times on a single line upon the
completion of the client request.

E.g., I need to see something similar to the following in my logfile:

2009-07-14T15:06:07.364 3258/2342/234

where ##/##/## stands for the time in ms for different parts of my application.

To do that I would need to access programmatically the nested profilers created
by Profiler.

Ideally, I would have a getTimeInstrumentByName(String name) method on Profiler
that would return a reference to the first sub-TimeInstrument of that name. It
would be up to the developer to ensure that all sub-TimeInstruments are
uniquely named. A possible implementation would be:

  public TimeInstrument getTimeInstrumentByName(String name) {
    for (TimeInstrument ti : childTimeInstrumentList) {
      if (ti instanceof StopWatch && name.equals(ti.getName()) {
          return ti;
      }
      else {
          TimeInstrument result = ((Profiler)ti).getTimeInstrumentByName(name);
          if (null != result) return result;
      }
    }
    return null;
  }


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