[mapserver-users] Forward time and other parameters to a layer defined as wms client

[Trond Michelsen]

Hi.

I made a workaround for this a while ago (I think we were using
Mapserver 4.10 at the time). It's possible there are better ways to
solve this now, but it still works :)

I can give more details tomorrow, but the gist of it is that I've made
an Apache handler (mod_perl) that modifies the incoming request, and
adds the TIME, LEVEL and all DIM_* parameters to an environment
variable I've called MS_PASSTHROUGH, and then I add %MS_PASSTHROUGH%&
to the connection parameter in the layer configuration.

I can send you a copy of my Apache handler and config tomorrow, if you
like.

On Wed, Aug 07, 2019 at 05:49:20PM +0000, Søren Laursen wrote:
> We have been using mapserver to display static layers, and are now
> in progress of using it to display dynamic (time bound) layers.

> We have a wms server that serve forecast, and we use a shape file to
> mask out areas, for example cut a forecast so it follow landmass.

> This works perfect, but when we want to include the TIME parameter
> to show a forecast at a specific point in time, we cannot get
> mapserver to forward the parameter.

> Later on we will have the same problem with forecast that are bound
> by for example attitude and time.

> We are using mapserver with apache, and in production we have a
> varnish in front (and banning urls when new forecast are ready).

> I have look at time documentation of both the time wms settings and
> the runtime subtitionen but cannot figure out how we can make a
> solution.

> When we hardcode a wms_time parameter in the layer definition
> everything works.

-- 
Trond Michelsen