Re: archive modules

Nathan Bossart <nathandbossart@gmail.com> writes:
> On Wed, Sep 14, 2022 at 04:47:23PM -0400, Tom Lane wrote:
>> Yeah, the objection there is only to trying to enforce such
>> interrelationships in GUC hooks.  In this case it seems to me that
>> we could easily check and complain at the point where we're about
>> to use the GUC values.

> I think the cleanest way to do something like that would be to load a
> check_configured_cb that produces a WARNING.  IIRC failing in
> LoadArchiveLibrary() would just cause the archiver process to restart over
> and over.  HandlePgArchInterrupts() might need some work as well.

Hm.  Maybe consistency-check these settings in the postmaster, sometime
after we've absorbed all GUC settings but before we launch any children?
That could provide a saner implementation for the recovery_target_*
variables too.

            regards, tom lane