Track errors for feed updates per feed

[rugk]

Current state

To notice errors like #927 (or #1228 for that matter) or just 404/500 errors for feed updates the user has to be the web server admin respectively contact them.

Proposal

Count errors and show an error counter or a red dot at the feed at the right side here:

E.g. users could then know if a feed is broken, without having to look whether the last entry there is outdated or so.

Maybe the error counter should only be shown if >= x (with e.g. x=3) requests failed.

Technically

I guess you "just" need a huge "try/catch" block. As indicated above, it should cover as much as possible, i.e. connection errors, but also database errors etc.
Of course, the errors should be re-thrown, i.e. (so) they should also be logged into the default Nextcloud log IMHO.

[anoymouserver]

This already exists for connection errors (database errors should never happen on a per feed level).
Errors while updating are counted in the database and shown to the user in the app once it occured more than 50 times in a row.

The feed is then marked in orange and has a tooltip with the actual error message:

What it does not (and cannot) log are problems where the updater, for whatever reason, was not executed at all.

[rugk]

database errors should never happen on a per feed level

But they happen, see #927 – it basically affects all feeds with thumbnails.

Okay did not know/remember about that orange thingy…

[SMillerDev]

But they happen, see #927 – it basically affects all feeds with thumbnails.

The issue there isn't a feed issue. It's a database configuration issue. If news shows that per feed it would give people the idea something needs to be fixed in a feed, while their database is the one at fault.