Re: Logical replication timeout problem - Mailing list pgsql-hackers

From Amit Kapila
Subject Re: Logical replication timeout problem
Date
Msg-id CAA4eK1Jvfc+C3zj++crKVQ6h4xeME6EJO77Ccmv6dZ=9HPsY5w@mail.gmail.com
Whole thread Raw
In response to Re: Logical replication timeout problem  (Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>)
Responses RE: Logical replication timeout problem
List pgsql-hackers
On Tue, Jan 17, 2023 at 6:41 PM Ashutosh Bapat
<ashutosh.bapat.oss@gmail.com> wrote:
>
> On Tue, Jan 17, 2023 at 3:34 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> > >
> > > I am a bit worried about the indirections that the wrappers and hooks
> > > create. Output plugins call OutputPluginUpdateProgress() in callbacks
> > > but I don't see why  ReorderBufferProcessTXN() needs a callback to
> > > call OutputPluginUpdateProgress.
> > >
> >
> > Yeah, I think we can do it as we are doing the previous approach but
> > we need an additional wrapper (update_progress_cb_wrapper()) as the
> > current patch has so that we can add error context information. This
> > is similar to why we have a wrapper for all other callbacks like
> > change_cb_wrapper.
> >
>
> Ultimately OutputPluginUpdateProgress() will be called - which in turn
> will call ctx->update_progress.
>

No, update_progress_cb_wrapper() should directly call
ctx->update_progress(). The key reason to have a
update_progress_cb_wrapper() is that it allows us to add error context
information (see the usage of output_plugin_error_callback).

-- 
With Regards,
Amit Kapila.



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