Re: Added schema level support for publication.

From: vignesh C <vignesh21(at)gmail(dot)com>
To: "houzj(dot)fnst(at)fujitsu(dot)com" <houzj(dot)fnst(at)fujitsu(dot)com>
Cc: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Smith <smithpb2250(at)gmail(dot)com>, "tanghy(dot)fnst(at)fujitsu(dot)com" <tanghy(dot)fnst(at)fujitsu(dot)com>, Greg Nancarrow <gregn4422(at)gmail(dot)com>, Ajin Cherian <itsajin(at)gmail(dot)com>, Rahila Syed <rahilasyed90(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>
Subject: Re: Added schema level support for publication.
Date: 2021-09-24 06:07:58
Message-ID: CALDaNm1OLCi44BRvmfhks736k_WSvpRccFGwWnAcQ7da7+cFOA@mail.gmail.com
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On Thu, Sep 23, 2021 at 12:22 PM houzj(dot)fnst(at)fujitsu(dot)com
<houzj(dot)fnst(at)fujitsu(dot)com> wrote:
>
> From Thurs, Sep 23, 2021 12:09 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> > On Wed, Sep 22, 2021 at 5:03 PM Hou Zhijie <houzj(dot)fnst(at)fujitsu(dot)com> wrote:
> > >
> > > Personally, I think we'd better move the code about changing publication's
> > > tablelist into AlterPublicationTables and the code about changing
> > publication's
> > > schemalist into AlterPublicationSchemas. It's similar to what the
> > v29-patchset
> > > did, the difference is the SET action, I suggest we drop all the tables in
> > > function AlterPublicationTables when user only set schemas and drop all the
> > > schema in AlterPublicationSchemas when user only set tables. In this
> > approach,
> > > we can keep schema and relation code separate and don't need to worry
> > > about the locking order.
> > >
> > > Attach a top-up patch which refactor the code like above.
> > >
> >
> > Good suggestion. I think it would still be better if we can move the
> > checks related to superuser and puballtables into a separate function
> > that gets called before taking a lock on publication.
>
> I agreed.
>
> I noticed v30-0001 has been committed with some minor changes, and the V30-0002
> patchset need to be rebased accordingly. Attach a rebased version patch set to
> make cfbot happy. Also Attach the two top-up patches which refactor the code as
> suggested. (top-up patch 1 is to keep schema and table code separate, top-up
> patch 2 is to move some cheap check into a function and invoke it before
> locking.)

Thanks for the patches, the changes simplifies alterpublications code
and handles the drop object in a better way. I have merged it to 0001
patch at [1].
[1] - https://www.postgresql.org/message-id/CALDaNm1R-xbQvz4LU5OXu3KKwbWOz3uDcT_YjRU6V0R5FZDYDg%40mail.gmail.com

Regards,
Vignesh

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