[mapserver-users] Python MapScript via WSGI examples

[Stephan Meißl]

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Hi Tom,

adding to Julien's response you could also replace
`request.loadParams()` with
`request.loadParamsFromURL(env['QUERY_STRING'])`.

As Julien said, key is that the environment variables are not set
automatically.

cu
Stephan


On 07/14/2016 05:19 PM, Julien-Samuel Lacroix wrote:
> Hi Tom,
> 
> When I run your script, I get the following response:
> 
>   This script can only be used to decode form results and
>   should be initiated as a CGI process via a httpd server.
> 
> This answer does not contain any content-type that can be stripped wit
h
> msIO_getStdoutBufferBytes(). That's why it returns None.
> 
> Before your OWSRequest call, you need to set the Environment variable
> that MapServer needs. Otherwise they are passed in the env variable an
d
> not to MapServer. Code to add:
> 
> 
> # List of all environment variable used by MapServer
> mapserv_env = [
>  'CONTENT_LENGTH', 'CONTENT_TYPE', 'CURL_CA_BUNDLE', 'HTTP_COOKIE',
>  'HTTP_HOST', 'HTTPS', 'HTTP_X_FORWARDED_HOST', 'HTTP_X_FORWARDED_PORT
',
>  'HTTP_X_FORWARDED_PROTO', 'MS_DEBUGLEVEL', 'MS_ENCRYPTION_KEY',
>  'MS_ERRORFILE', 'MS_MAPFILE', 'MS_MAPFILE_PATTERN', 'MS_MAP_NO_PATH',
>  'MS_MAP_PATTERN', 'MS_MODE', 'MS_OPENLAYERS_JS_URL', 'MS_TEMPPATH',
>  'MS_XMLMAPFILE_XSLT', 'PROJ_LIB', 'QUERY_STRING', 'REMOTE_ADDR',
>  'REQUEST_METHOD', 'SCRIPT_NAME', 'SERVER_NAME', 'SERVER_PORT'
> ]
> for key in mapserv_env:
>     if key in env:
>         os.environ[key] = env[key]
>     else:
>         os.unsetenv(key)
> request = mapscript.OWSRequest()
> 
> 
> Best regards,
> Julien
> 
> On 16-07-13 12:55 PM, Kralidis, Tom (EC) wrote:
>> Hi all: we are looking into updating our Python MapScript (CGI-based)
>> wrappers
>> to leverage WSGI, and are having integration issues as part of testin
g.
>>
>> We are using 6.4.2 on Ubuntu 14.04.  See example in [1] (against
>> any mapfile is fine).  Simple run with python ./mapscript-wsgi.py
>> which makes
>> the server available on localhost:8000 by default.
>>
>> Issues:
>>
>> - the value in
>> https://gist.github.com/tomkralidis/9adbd4864c03647aa7eb4f96a3c33297#
file-mapscript-wsgi-py-L18
>> ends up being a Python None type for some reason when it should be a
>> string of the content-type
>> - issuing a, say, WMS 1.3.0 GetCapabilities request yields the
>> venerable MapServer "This script can ...." default message, when I am
>> expecting Capabilities XML
>>
>> Any ideas what I'm doing wrong here?
>>
>> ..Tom
>>
>> [1] https://gist.github.com/tomkralidis/9adbd4864c03647aa7eb4f96a3c33
297
>> _______________________________________________
>> mapserver-users mailing list
>> mapserver-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>
> 

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