[mapserver-users] FCGI and SVG output goes to STDERR?

[thomas bonfort]

Nick,
in mapcairo.c near line 857, function

int saveImageCairo (imageObj *img, mapObj *map, FILE *fp, outputFormatObj
*format)

try changing fwrite to msIO_fwrite

In any case, please open an issue for this one so it doesn't get forgotten.

regards,
thomas



On 2 July 2013 06:29, Nick Webb <nickw at redwireservices.com> wrote:
>
>
> On Mon, Jul 1, 2013 at 5:50 PM, Frank Warmerdam <warmerdam at pobox.com>
wrote:
>>
>> Nick,
>>
>> As I vaguely recall from when I worked on fastcgi support in MapServer,
only output formats that can be redirected through the low level mapserver
io layer (ms_io*.c) will work properly in fastcgi mode.  I'm guessing the
svg encoder just writes directly to stdout.  If my theory is correct,
non-trivial code changes would be necessary to make this work.
>>
>>
>
> Thanks Frank, that actually makes perfect sense.  I'm not all that
familiar, but it seems that I read somewhere that a legacy version of
mapserver had native SVG support, which in turn would work with fastcgi?
 Seems I also read native support is on the wish list for a future release
as well.
>>
>>
>>
>>
>> On Mon, Jul 1, 2013 at 5:16 PM, Nick Webb <nickw at redwireservices.com>
wrote:
>>>
>>> List,
>>>
>>> I've really tried hard to nail this down, but it makes no sense to me.
 I'm not a map guy, but am a system administrator for one.
>>>
>>> We have a mapserver setup that works fine for both PNG and SVG when we
use the standard apache cgi module.  When we switch to mod_fcgid, however,
SVG displays no output in the browser and instead seems to output proper
SVG/XML to the apache error log!  PNG continues to work fine.
>>>
>>> I'm flabbergasted and nothing I try seems to work.  I even set it up on
another server and I get the same result, given I'm following the same
build steps.
>>>
>>> Any ideas on where I can go next?
>>>
>>> Perhaps the SVG is not really valid, but I've copied and pasted the
XML/SVG from the error_log to a static file, and that also displays fine
via a browser.
>>>
>>> Here is the error_log output:
>>>
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="
http://www.w3.org/1999/xlink" width="200pt" height="154pt" viewBox="0 0 200
154" version="1.1">
>>> <g id="surface0">
>>> . . .
>>> </g>
>>> </svg>
>>> [Tue Jul 02 00:12:11.947149 2013] [fcgid:warn] [pid 2398] [client
50.197.85.9:2118] mod_fcgid: stderr: CGI Request 1 on process 2405
>>> [Tue Jul 02 00:12:11.947213 2013] [fcgid:warn] [pid 2398] [client
50.197.85.9:2118] mod_fcgid: stderr: msDrawMap(): rendering using
outputformat named svg (CAIRO/SVG).
>>> [Tue Jul 02 00:12:11.947223 2013] [fcgid:warn] [pid 2398] [client
50.197.85.9:2118] mod_fcgid: stderr: msDrawMap(): WMS/WFS set-up and query,
0.000s
>>> [Tue Jul 02 00:12:11.947230 2013] [fcgid:warn] [pid 2398] [client
50.197.85.9:2118] mod_fcgid: stderr: msDrawMap(): Layer 0 (thematic), 0.040s
>>> [Tue Jul 02 00:12:11.947238 2013] [fcgid:warn] [pid 2398] [client
50.197.85.9:2118] mod_fcgid: stderr: msDrawMap(): Drawing Label Cache,
0.000s
>>> [Tue Jul 02 00:12:11.947245 2013] [fcgid:warn] [pid 2398] [client
50.197.85.9:2118] mod_fcgid: stderr: msDrawMap() total time: 0.040s
>>> [Tue Jul 02 00:12:11.947253 2013] [fcgid:warn] [pid 2398] [client
50.197.85.69:2118] mod_fcgid: stderr: msSaveImage(stdout) total time: 0.005s
>>> [Tue Jul 02 00:12:11.947261 2013] [fcgid:warn] [pid 2398] [client
50.197.85.9:2118] mod_fcgid: stderr: mapserv request processing time
(msLoadMap not incl.): 0.045s
>>> [Tue Jul 02 00:12:11.947268 2013] [fcgid:warn] [pid 2398] [client
50.197.85.9:2118] mod_fcgid: stderr: msFreeMap(): freeing map at 0x8881a0.
>>>
>>>
>>> DEBUG 5 is set logging to the same file (stderr).
>>>
>>>
>>> ./mapserv -v
>>> MapServer version 6.2.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG SUPPORTS=PROJ
SUPPORTS=GD SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO SUPPORTS=ICONV
SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_CLIENT
SUPPORTS=WCS_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS SUPPORTS=GEOS
INPUT=JPEG INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
>>>
>>>
>>> Thanks,
>>> Nick
>>>
>>> _______________________________________________
>>> mapserver-users mailing list
>>> mapserver-users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>
>>
>>
>>
>> --
>>
---------------------------------------+--------------------------------------
>> I set the clouds in motion - turn up   | Frank Warmerdam,
warmerdam at pobox.com
>> light and sound - activate the windows | http://pobox.com/~warmerdam
>> and watch the world go round - Rush    | Geospatial Software Developer
>
>
>
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