[MapProxy] WMS-C as a source

[Jeff Konnen]

Hi,
I'd like to use mapproxy to reproject a WMS-C service and use it as a WMS.
Is that possible?

I tried this conf:

*services:
  demo:
  kml:
  tms:
    # needs no arguments
  wms:
    srs: ['EPSG:2169']
    image_formats: ['image/jpeg']
    md:
      # metadata used in capabilities documents
      title: MapProxy WMS Proxy
      abstract: This is the fantastic MapProxy.
      online_resource: http://mapproxy.org/
      contact:
        person: Your Name Here
        position: Technical Director
        organization:
        address: Fakestreet 123
        city: Somewhere
        postcode: 12345
        country: Germany
        phone: +49(0)000-000000-0
        fax: +49(0)000-000000-0
        email: info at omniscale.de
      access_constraints:
        This service is intended for private and evaluation use only.
        The data is licensed as Creative Commons Attribution-Share Alike 2.0
        (http://creativecommons.org/licenses/by-sa/2.0/)
      fees: 'None'

layers:
  - name: Ortho
    title: Ortho
    sources: [ign_ortho_tile]

grids:
  mygrid:
    srs: EPSG:310024802
    bbox: [-1048576,3670016,2097152,6815744]
    bbox_srs: EPSG:310024802
    origin: nw
    res: [2048,1024,512,256,128,64,32,16,8,4,2,1,0.5,0.25,0.125,0.0625]
    format: image/jpeg


sources:
  ign_ortho_tile:
    type: tile
    url:
http://xxx.xxx.xx/wmsc?service=WMS&request=GetMap&version=1.1.1&layers=ORTHOIMAGERY.ORTHOPHOTOS&styles=&srs=EPSG:310024802&format=image/jpeg&width=256&height=256&bbox=%(bbox)s
    format: image/jpeg
    grid: mygrid
*
but I keep getting this error when starting the service:

(mapproxy)[root at todd_ign mymapproxy]# mapproxy-util serve-develop
mapproxy.yaml -b 0.0.0.0
[2012-03-06 17:02:10,661] mapproxy.config - INFO - reading: mapproxy.yaml
[2012-03-06 17:02:10,685] mapproxy.config - WARNING - unknown 'format' in
grids.mygrid
[2012-03-06 17:02:10,685] mapproxy.config - WARNING - unknown 'format' in
sources.ign_ortho_tile
[2012-03-06 17:02:10,766] mapproxy.system - INFO - using libproj for
coordinate transformation
[2012-03-06 17:02:10,779] mapproxy.system - INFO - loading proj data from
/usr/share/proj/
Traceback (most recent call last):
  File "/home/mapserver/mapproxy/bin/mapproxy-util", line 9, in <module>
    load_entry_point('MapProxy==1.3.0', 'console_scripts',
'mapproxy-util')()
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/script/util.py",
line 319, in main
    commands[command]['func'](args)
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/script/util.py",
line 72, in serve_develop_command
    app = make_wsgi_app(mapproxy_conf, debug=options.debug)
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/wsgiapp.py",
line 118, in make_wsgi_app
    services = conf.configured_services()
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/config/loader.py",
line 204, in configured_services
    return self.services.services()
  File "/usr/lib64/python2.6/contextlib.py", line 34, in __exit__
    self.gen.throw(type, value, traceback)
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/util/__init__.py",
line 42, in local_base_config
    yield
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/config/loader.py",
line 204, in configured_services
    return self.services.services()
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/config/loader.py",
line 1113, in services
    new_services = creator(service_conf or {})
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/config/loader.py",
line 1188, in wms_service
    root_layer = self.context.wms_root_layer.wms_layer()
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/util/__init__.py",
line 86, in wrapper
    func.__memoize_cache[key] = func(*args)
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/config/loader.py",
line 1003, in wms_layer
    layers.append(WMSLayerConfiguration(layer_conf,
self.context).wms_layer())
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/util/__init__.py",
line 86, in wrapper
    func.__memoize_cache[key] = func(*args)
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/config/loader.py",
line 1006, in wms_layer
    this_layer = LayerConfiguration(self.conf, self.context).wms_layer()
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/util/__init__.py",
line 86, in wrapper
    func.__memoize_cache[key] = func(*args)
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/config/loader.py",
line 1041, in wms_layer
    map_layer = self.context.sources[source_name].source()
  File
"/home/mapserver/mapproxy/lib/python2.6/site-packages/mapproxy/config/loader.py",
line 784, in source
    format = file_ext(params['format'])
KeyError: 'format'


The other question is about BBOX and SRS. Actually in this case I want to
use the BBOX in the WMS-C SRS (310024802), will this be used in the
requests?
I could not try it out.

What I try to achieve is to test if MapProxy can be an alternative to the
solution described here (and which obviously has some issues;-)):
http://t.co/2Ghb1WOS

Thanks in advance and best regards
Jeff

-- 
Jeff Konnen
http://map.geoportal.lu
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