[mapserver-users] Mapcache with mapfile as layer

[Stephen Woodbridge]

Try it, it might work, I don't remember, but you still have the problem 
of invalidating the tiles when you changes the mapfile. But seriously, 
your approach seems a little haphazard. Also how often to you make 
mapfile changes? how did you deal with the invalidating cache problem 
before?

The big difference here is that mapcache is using mapserver as a WMS 
source and therefore it has to conform to the WMS rules.

Anyway, Thomas is the one that you would need to convince or fund if you 
want changes to the existing behavior. Meanwhile it would be worthwhile 
your time to figure out how it curently works before asking for features 
that might already exist. It has been a few months since I setup a 
mapcache instance and I know there have been changes that I'm not on top 
of in the newest  release.

-Steve

On 9/19/2013 3:46 PM, Pablo Cecconi wrote:
> The problem with that approach is that is the mapfile changes (a layer
> is added or the default status of a layer changes) then I also have to
> update mapcache config file. What i wonder is if there is a way to just
> modify the map and have Mapcache reflecting that change.
>
> Pablo
>
>
> On Thu, Sep 19, 2013 at 4:40 PM, Stephen Woodbridge
> <woodbri at swoodbridge.com <mailto:woodbri at swoodbridge.com>> wrote:
>
>     On 9/19/2013 3:02 PM, Pablo Cecconi wrote:
>
>         Hello,
>
>         I've been a Mapserver user for many years now but I'm new to
>         Mapcache
>         and I'm not sure whether it's possible to replicate a particular
>         TileCache setup using Mapcache.
>         What we have today is a number of mapfiles (with Mapserver 5.4)
>         set up
>         as WMS-C layers served with TileCache. We're migrating to Mapserver
>         6.2.1 and as it's incompatible with TileCache we expect to be
>         able to
>         replace it using Mapcache.
>         In our current setup if I have a mapfile where a particular
>         layer has
>         STATUS OFF then TileCache will honor that status and not render
>         the layer.
>         I'd like to know whether it's possible to have MapCache work
>         that way,
>         that is, passing the map name as the LAYERS parameter of the WMS
>         service
>         and make it honor whatever STATUS a particular layer would have
>         in the
>         mapfile.
>
>
>     I think the mapcache paradigm for this in mapcache works like this:
>
>     tileset
>        name=foo
>        source=foo-source
>
>     source
>        name=foo-source
>        map=/path/to/mapfile
>        layers=layer1,layer2,layers3,.__..
>
>     So you can configure which layers a tileset returns. I'm not sure
>     how it deals with the status off, but it will work if you define the
>     list explicitly. This also allow you to do this in the same mapcache.xml
>
>     tileset
>        name=foo2
>        source=foo-source2
>
>     source
>        name=foo-source2
>        map=/path/to/mapfile
>        layers=streets,...
>        transparent=true
>
>     I do this a lot when I have a subset of data like streets that I
>     want to render as an overly on a raster image
>
>     -Steve W
>     _________________________________________________
>     mapserver-users mailing list
>     mapserver-users at lists.osgeo.__org
>     <mailto:mapserver-users at lists.osgeo.org>
>     http://lists.osgeo.org/__mailman/listinfo/mapserver-__users
>     <http://lists.osgeo.org/mailman/listinfo/mapserver-users>
>
>