Hi,
The idea of this work is to allow WMTS requests per workspaces (virtual
services), something like this:
curl
"http://localhost:8080/geoserver/topp/gwc/service/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=states&STYLE=pophatch&FORMAT
=image/png&TILEMATRIXSET=EPSG:900913&TILEMATRIX=EPSG:900913:3&TILEROW=3&TILECOL=1"
-o /tmp/tile.png -D -
curl '
http://localhost:8080/geoserver/topp/gwc/service/wmts?REQUEST=GetCapabilities'
-o /tmp/wmts-capabilities.xml
This two request will be executed in the context of 'topp' workspace, which
means that we don't need to prefix layer names with the
workspace prefix and only layers that belong to 'topp' workspace will be
considered. The GetCapabilities operation result will only
advertise layers that belong to 'topp' workspace and layers names will not be
prefixed by the workspace name. The advertised operations
URLs will keep the workspace context.
Since GWC doesn't have the concept of workspaces (a tile layer name is just a
name) and adding that concept will require some work a simple
approach is to let GeoServer handle the local workspace parameter.
The idea is that GeoServer ConfigCatalog will be aware of the local workspace
and will only list\show layers that belong to the local
workspace and before sending the request to GWC dispatcher we rewrite the
request in the way GWC is expecting it (layer names prefixed with
the workspace name and no workspace in the path). This will be completely
transparent to GWC.
The only change that needs to be done in GWC is to allow a TileLayer to return
an advertised name (by default this method will return the
layer name). This will allow GeoServerTileLayer to override the
getAdvertisedName() method and return the non prefixed layer name if a local
workspace is present. The WMTS get capabilities operation will invoke
getAdvertiseName() method to obtain the name that should be used to
advertise the layer.
Any opinions on this ?
Regards,
Nuno Oliveira
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Nuno Miguel Carvalho Oliveira
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Software Engineer
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