Re: pglogical_output - a general purpose logical decoding output plugin

On 2 November 2015 at 20:35, Andres Freund <andres(at)anarazel(dot)de> wrote:
> On 2015-11-02 20:17:21 +0800, Craig Ringer wrote:
>
>> See the README.md and DESIGN.md in the attached patch for details on
>> the plugin. I will follow up with a summary in a separate mail, along
>> with a few points I'd value input on or want to focus discussion on.
>
> Sounds to me like at least a portion of this should be in sgml, either
> in a separate contrib page or in the logical decoding section.

Yes, I think so. Before rewriting to SGML I wanted to solicit opinions
on what should be hidden away in a for-developers README file and what
parts deserve exposure in the public docs.

> A quick readthrough didn't have a separate description of the
> "sub-protocol" in which changes and such are encoded - I think we're
> going to need that.

It didn't quite make the first cut as I have to make a couple of edits
to reflect late changes. I should be able to follow up with that later
today.

The protocol design documentation actually predates the plugin its
self, though it saw a few changes where it became clear something
wouldn't work as envisioned. It's been quite a pleasure starting with
a detailed design, then implementing it.

> There's a bunch of changes that are hinted at in the files in various
> places. Could you extract the ones you think need to be fixed before
> integration see in some central place (or just an email)?

Yep, writing that up at the moment. I didn't want to make the initial
post too verbose.

--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services