Re: Replication identifiers, take 4

On 2015-04-21 16:26:08 -0400, Robert Haas wrote:
> On Tue, Apr 21, 2015 at 8:08 AM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> > I've now named the functions:
> >
> > * pg_replication_origin_create
> > * pg_replication_origin_drop
> > * pg_replication_origin_get (map from name to id)
> > * pg_replication_progress_setup_origin : configure session to replicate
> > from a specific origin
> > * pg_replication_progress_reset_origin
> > * pg_replication_progress_setup_tx_details : configure per transaction
> > details (LSN and timestamp currently)
> > * pg_replication_progress_is_replaying : Is a origin configured for the session
> > * pg_replication_progress_advance : "manually" set the replication
> > progress to a value. Primarily useful for copying values from other
> > systems and such.
> > * pg_replication_progress_get : How far did replay progress for a
> > certain origin
> > * pg_get_replication_progress : SRF returning the replay progress for
> > all origin.
> >
> > Any comments?
>
> Why are we using functions for this rather than DDL?

Unless I miss something the only two we really could use ddl for is
pg_replication_origin_create/pg_replication_origin_drop. We could use
DDL for them if we really want, but I'm not really seeing the advantage.

Greetings,

Andres Freund