Extending Google Appstats

Question

After watching Guido's Google IO talk and hearing the mention that it can be extended (thus providing an instrumentation mechanism for recording your own events) I am still at a loss on how this would be done.

The functions are all for handling RPC and not simply start/stop calls an expensive function (or wrapper) can make.

Has anyone extended the library, more to the point in a safe manner that doesn't require overriding the original?

Is there something you actually want to do with it that requires an extension? — Nick Johnson, Aug 23 '11 at 01:20
Record the length of time a CPU intensive tasks takes and report it under AppStats (important when using the python27 runtime and threads). — Metalshark, Aug 23 '11 at 06:11

score 2 · Accepted Answer · answered Aug 23 '11 at 17:20

2

I was referring to the ability to record custom events. A simple example is:

from google.appengine.ext.appstats import recording
recording.recorder.record_custom_event('hello', 'data')

Note that you should really check whether recorder is not None before calling its record_custom_event() method.

answered Aug 23 '11 at 17:20

Guido van Rossum

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PS. It's Appstats, not AppStats. – Guido van Rossum Aug 31 '11 at 21:40
Changing the question title now ;-) – Metalshark Sep 22 '11 at 15:54
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Is this also possible in the Java version of Appstats? – byeo Nov 17 '11 at 21:51
@gvanrossum I think I found a [bug](http://code.google.com/p/googleappengine/issues/detail?id=6448) in the recorder related to when PATH_INFO and SCRIPT_NAME are passed as unicode strings. – Gabriel Dec 03 '11 at 16:40
is it possible to extend Appstats also in Java? I didn't find anything in the web – Michele Orsi Apr 30 '12 at 09:18
Please start a new question instead of tacking a comment onto an old one. – Guido van Rossum May 01 '12 at 18:17
I found I had to use the recorder_proxy rather than the recorder. – Jay Kyburz Dec 31 '14 at 05:03

Extending Google Appstats

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