+1 for dropping.

-Jukka Rahkonen-

Lähettäjä: Andrea Aime <andrea.a...@geo-solutions.it>
Lähetetty: torstai 18. maaliskuuta 2021 16.54
Vastaanottaja: Geoserver-devel <geoserver-devel@lists.sourceforge.net>
Aihe: [Geoserver-devel] Dropping the WMS animator, superceded* by WPS Download

Hi all,
as you know, the WPS download module is now a supported extension. The module 
provides
a good asynchronous animation building facility, which can be called in a 
asynchronous way and
generates MP4 movies.

Maybe not many know that WMS has an "animator", which can build animated gifs:
https://docs.geoserver.org/latest/en/user/tutorials/animreflector.html

It does not compare very well to the WPS download:

  1.  Can only do synchronous requests
  2.  It's memory bound
  3.  Normally limited to URL size (I guess one could do a form POST though, 
haven't tried)
  4.  Can only build animated GIFs (hence, relatively low compression)
  5.  Can only work with local GeoServer layers (WPS download can do on the fly 
cascade as well)
To be fair, it has one advantage over the WPS download, in that it can animate 
over any WMS
request parameter, like changing the bbox, or a view param, while WPS download 
only over time.

I don't think anyone is seriously using it (did you know it was there in the 
first place?), and given
its runtime limits and memory consumption, I'd suggest to just drop it. Only on 
the dev branch,
and we can include a warning in the 2.19.0 release announcement for eventual 
users to switch
to the WPS download.

Opinions??

Cheers
Andrea

*: well, almost superceded!


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