Hi,
I am reviving a Python 2 MapServer MapScript app that used to work 7
years ago (and still is in old deployment) but stuck in some MapScript
calls that fail but also throw no Exceptions.
Purpose of the app "MapGlow" [1] is to generate a WMS-heatmap triggered
by specific STYLE parameters. When no heatmap STYLE is requested
requests are delegated to map_file.OWSDispatch() etc. The latter works
fine so the overall setup/stack/mapfile is working. Using MS 7.6.0 in
Docker (compose) with Lighttp, FastCGI, WSGI, flup.
It is only when layerObj.queryByRect() is called, a HTTP 500 is
returned after a FastCGI hard error, no means to catch an Exception. The
passed MapFile and Rect objects seem ok. Also I noticed that
layerObj.metadata had 0 items. I can see that I have proper SWIG objects
like
<mapscript.layerObj; proxy of <Swig Object of type 'layerObj *' at
0x7fded06b1de0> >
If only I could get a hint, a MapFile setting, maybe some log output or
debug flag I can set? The WIP is on GH, I can point at the failing line
[2] but the code is
quite involved (mind, my first Python 7-9 years ago):
[1] https://github.com/justb4/mapglow
[2]
https://github.com/justb4/mapglow/blob/master/app1/wms/mapglow_ms.py#L249
Thanks for any help,
Just van den Broecke
The Netherlands
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