Re: Add common function ReplicationOriginName.

From: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
To: Peter Smith <smithpb2250(at)gmail(dot)com>
Cc: Aleksander Alekseev <aleksander(at)timescale(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Add common function ReplicationOriginName.
Date: 2022-09-21 10:08:38
Message-ID: CAA4eK1J0MbqLEkg277RqeVPoB24Ky+cctbVVm2RC5uTB92qH7A@mail.gmail.com
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On Wed, Sep 21, 2022 at 3:09 PM Peter Smith <smithpb2250(at)gmail(dot)com> wrote:
>
> On Wed, Sep 21, 2022 at 3:23 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> >
> ...
>
> > Can't we use the existing function ReplicationOriginNameForTablesync()
> > by passing relid as InvalidOid for this purpose? We need a check
> > inside to decide which name to construct, otherwise, it should be
> > fine. If we agree with this, then we can change the name of the
> > function to something like ReplicationOriginNameForLogicalRep or
> > ReplicationOriginNameForLogicalRepWorkers.
> >
>
> This suggestion attaches special meaning to the reild param.
>
> Won't it seem a bit strange for the non-tablesync callers (who
> probably have a perfectly valid 'relid') to have to pass an InvalidOid
> relid just so they can format the correct origin name?
>

For non-tablesync workers, relid should always be InvalidOid. See, how
we launch apply workers in ApplyLauncherMain(). Do you see any case
for non-tablesync workers where relid is not InvalidOid?

--
With Regards,
Amit Kapila.

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