Re: [Mapnik-users] unable to deploy latest OGCServer running wsgi (was: howto config GeoWebCache in front of mapnik/ogcserver?)

Wed, 15 Jun 2011 05:10:01 -0700 

thanks, I will try that and report back... but not before next week...


Hi Daniel,

Sorry, that was my fault. I have a different map_factory.py accepting 
configpath, but I understand this cannot be changed, so I just reverted it:

https://github.com/mapnik/OGCServer/commit/55a4c54e084c3343ba540a25ca1cf481a3424ae8

Your script should work fine now.

My map_factory.py script looks like:

class WMSFactory(BaseWMSFactory):
     def __init__(self):
         base_path, tail = os.path.split(__file__)
         configpath = os.path.join(base_path, 'ogcserver.conf')
         file_path = os.path.join(base_path, 'mapfile.xml')
         BaseWMSFactory.__init__(self, configpath)
         self.loadXML(file_path)
         self.finalize()

BaseWMSFactory now accepts the configpath (optional) to be able to read the new 
parameters added (wms_srs...), so you only need to pass configpath if using the 
new parameters.

Can you please try again?

Manel.


-----Mensaje original-----
De: [email protected]
[mailto:[email protected]] En nombre de
Daniel Behr
Enviado el: martes, 14 de junio de 2011 11:53
Para: [email protected]
Asunto: Re: [Mapnik-users] unable to deploy latest OGCServer
running wsgi (was: howto config GeoWebCache in front of
mapnik/ogcserver?)

Hi again,

just tried to deploy the latest OGCServer. took it from github and
adjusted the ogcserver.conf and map_factory.py files, but now I am
getting the following error in the apache log:

[info] mod_wsgi (pid=13502, process='kofserver3', application=''):
Loading WSGI script '/srv/www/wsgi/wms_osm.wsgi'.
[error] mod_wsgi (pid=13502): Target WSGI script
'/srv/www/wsgi/wms_osm.wsgi' cannot be loaded as Python module.
[error] mod_wsgi (pid=13502): Exception occurred processing
WSGI script
'/srv/www/wsgi/wms_osm.wsgi'.
[error] Traceback (most recent call last):
[error]  File "/srv/www/wsgi/wms_osm.wsgi", line 6, in<module>
[error]   application = WSGIApp('/opt/OGCServer/conf/ogcserver.conf')
[error]  File
"build/bdist.linux-x86_64/egg/ogcserver/wsgi.py", line 54,
in __init__
[error]   self.mapfactory = getattr(mapfactorymodule,
'WMSFactory')(configpath)
[error] TypeError: __init__() takes exactly 1 argument (2 given)

ogcserver setup shows no error and I can import it to python,
but have
there been any changes to wsgi support?
unfortunately I cant make out what exactly causes this error
and I'll go
back to the old version of OGCServer (from ~March 2011).

BTW, just in case someone has an idea... I use these settings:

****
map_factory.py:
****
#!/usr/bin python

from ogcserver.WMS import BaseWMSFactory

class WMSFactory(BaseWMSFactory):
    def __init__(self):
      BaseWMSFactory.__init__(self)
      self.loadXML('/opt/mapnik/osm_map.xml')
      self.finalize()

****
wsgi server script:
****
#!/usr/bin python

import sys
from ogcserver.wsgi import WSGIApp
sys.path.append('/opt/OGCServer/conf/')
application = WSGIApp('/opt/OGCServer/conf/ogcserver.conf')

****
Apache config:
****
      WSGIDaemonProcess server3 processes=10 threads=1
display-name=%{GLOBAL}
      WSGIApplicationGroup %{GLOBAL}
      WSGIProcessGroup server3
      WSGIScriptAlias /osm /srv/www/wsgi/wms_osm.wsgi

      LogLevel debug

      <Directory /srv/www/wsgi>
      Order allow,deny
      Allow from all
      </Directory>

---

many thanks
Daniel




Am 14.06.2011 08:38, schrieb Daniel Behr:

Thanks Manel&  Jukka,

Had no time to try the latest OGCServer version and I am a

bit reluctant

to change my running system again...

The GWC that comes with GeoServer has a different structure. I am
actually not sure about the following<bean>  from
WEB-INF/geowebcache-core-context.xml:

<bean id="gwcWMSConfig"
class="org.geowebcache.config.GetCapabilitiesConfiguration">
<constructor-arg ref="gwcGridSetBroker"/>
<constructor-arg


value="http://localhost/osm?SERVICE=WMS&amp;VERSION=1.1.1&amp;
REQUEST=GetCapabilities"/>


<constructor-arg value="image/png,image/png8,image/jpeg"/>
<constructor-arg value="3x3"/>
<constructor-arg value=""/>
<constructor-arg value="false"/>
</bean>

Any vendor specific parameters should go into the 5. empty
constructor-arg and it seems to me that something is needed

there to let

mapniks GetCap show up. I already tried many combinations

without success.


Anyway, the changes made to OGCServer look like they may solve this.
I'll report back.

thanks
Daniel


Am 10.06.2011 13:03, schrieb Rahkonen Jukka:

Hi,

I am running GeoWebCache which comes with GeoServer and the config
file "geowebcache.xml" has this kind of entry
<wmsLayer>
<name>GWC_service</name>  <!-- this is what is published to

the outside

world -->


<wmsUrl><string>http://server.fi/cgi-bin/mapserv.exe</string></wmsUrl>

<!-- the url of your wms map -->
<wmsLayers>WMS_layer1</wmsLayers>  <!-- layer names as known by your
wms -->

I am not sure if GWC is reading the GetCapabilities ever, it just
starts to send GetMaps when seeding the cache. However,

the standalone

service may behave differently.

-Jukka Rahkonen-



manel.clos wrote:



Hi Daniel,

You may try a newer OGCServer version[1]. Perhaps GWC doesn't
like the GetCapabilities OGCServer is sending, and the newer
version has a lot of improvements in this area.

Also, if it does not work with the new version, please open a
bug on github and post any debug info from GWC.

Manel.

[1] https://github.com/mapnik/OGCServer/



-----Mensaje original-----
De: [email protected]
[mailto:[email protected]] En nombre de
Daniel Behr
Enviado el: miércoles, 08 de junio de 2011 15:24
Para: [email protected]
Asunto: [Mapnik-users] howto config GeoWebCache in front of
mapnik/ogcserver?

Hi!
is there someone out there using GWC with Mapnik?

I saw some older posts, but none including details on GWC
configuration.

My question is:
whats the trick when adding the GetCapabilities to the
'gwcWMSConfig'-bean in GWCs geowebcache-core-context.xml?

I supposed this would work, but it didnt:

<constructor-arg
value="http://localhost/osm?service=WMS&amp;version=1.1.1&amp;
request=GetCapabilities"/>

(without the line break of course)

I have mapnik 0.7.1, GWC 1.2.6 standalone (not the GS

plugin) and a

valid GetCap from OGCServer, but none of the settings I tried
gave me a
demo-layer after reloading the tomcat app.

I also tried setting the empty arg to
<constructor-arg value="module=map_factory"/>
and the likes, but nothing.

I keep on digging, but maybe someone just knows whats missing.
thanks in advance...

--
Daniel Behr
-------------------------------------------
Institut für Küstenforschung
Helmholtz-Zentrum Geesthacht GmbH
D-21502 Geesthacht
+49 (0)4152 87 1589 (fax -1596)
[email protected]

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