[MapProxy] ArcGIS Rest export hack and patch status

[André Pirard]

Hello,

To support ArcGIS Rest, I made a tiny 1.6 patch that adds
&size=<width>,< height> to a WMS requests.
By "manually" adding other &parameters=as_below, the request becomes
ArcGIS export compatible.
After installing 1.8, I noticed correct JOSM images despite the patch
was absent.
Not receiving size information, ArcGIS returns 400×400 tiles and
Mapproxy seems to cope with that.
I "manually" set &size=1184,1184 according to the size I saw Mapproxy
use routinely.

http://geoservices.wallonie.be/arcgis/rest/services/TOPOGRAPHIE/PICC/MapServer/export?styles=&service=WMS&format=image%2Fpng&f=image&request=GetMap&dpi=90&height=1184&srs=EPSG%3A3857&version=1.1.1&bboxSR=3857&bbox=625842.501028,6539622.5054,626196.022284,6539976.02665&imageSR=3857&width=1184&transparent=True&size=1184,1184

Is Mapproxy designed to build a correct cache when the tiles are
received with a non-requested size?
Does Mapproxy always use the same size (here 1184) for a given
configuration?
Why isn't Aron Bierbaum's patch (authored on 16 Aug 2013) integrated?
It's essentially equivalent to my hack but needs not adding the other
parameters "manually".
Isn't supporting ArcGIS great?

Thank you,
Cheers

André.


services:
  demo:
  kml:
  tms:
  wmts:
  wms:
    srs: ['EPSG:4326', 'EPSG:3857', 'EPSG:900913', 'CRS:84',
'EPSG:31370', 'EPSG:3812']
    image_formats: ['image/jpeg', 'image/png', 'image/png8']
layers:
  - name: SPW_BASE
    title: SPW base
    sources: [SPW_BASE_cache]

caches:
  SPW_BASE_cache:
    sources: [SPW_BASE_source]
    grids: [GLOBAL_MERCATOR]

sources:
  SPW_BASE_source:
    type: wms
    supported_srs: ['EPSG:3857']
    image:
      transparent_color: '#fdfdfd'
      transparent_color_tolerance: 5
    req:
      url:
http://geoservices.wallonie.be/arcgis/rest/services/TOPOGRAPHIE/PICC/MapServer/export?
      dpi: 90
      bboxSR: 3857
      imageSR: 3857
      f: image
      transparent: false
      format: png8
      size: 1184,1184

globals:
  image:
    resampling_method: bicubic
  cache:
    link_single_color_images: true




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