Supporting different versions of the GSA/Mini

wrt: #546344: Add config option to restrict by subcollection

If we need to address different features for different Google Mini (MID and M2) and potentially GSA versions I suggest to add a something like a select box into the admin area to specify the Mini/GSA version so that features can be enabled and disabled specific to that version.

I thought a more general issue for discussion could be useful for this issue.

It's certainly the case that features will change between different versions of the GSA hardware. An example I've seen is the maximum meta tag content that can be indexed -- that changed in the online documentation between the time I first looked at it, and now.

Does Google document these configuration and feature variations anywhere? (Or could we request them?)

I like the idea of being able to pre-configure the module with the select list, but also being able to over-ride individual settings if your version is not explicitly catered for.

One possible approach would be a configuration file which defined mappings between features and GSA versions. A simple associative array could suffice for the syntax. People could then submit patches to the config file if the version of the GSA that they purchased had a differing configuration. For things like maximum values, people could update the available pre-set configurations without any extra code being required elsewhere.