Subject: Re: Unified logging system for command-line programs
To: Andres Freund <andres@anarazel.de>
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Cc: pgsql-hackers <pgsql-hackers@postgresql.org>,
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From: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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Date: Tue, 2 Apr 2019 14:13:28 +0200
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On 2019-04-01 20:55, Andres Freund wrote:
> A written upthread, I think this should have had a uniform interface
> with elog.h, and probably even share some code between the two.

The purpose of this patch was to consolidate the existing zoo of logging
routines in the frontend programs.  That has meaningful benefits.  There
is hardly any new code; most of the code was just consolidated from
existing scattered code.

If someone wants to take it further and consolidate that with the
backend logging infrastructure, they are free to propose a patch for
consideration.  Surely the present patch can only help, since it already
makes the call sites uniform, which would presumably have to be done
anyway.  However, there is no prototype or even detailed design sketch
let alone someone committing to implement such a project.  So it seems
unreasonable to block other meaningful improvements in adjacent areas in
the meantime.

> This is
> going in the wrong direction, making it harder, not easier, to share
> code between frontend and backend.

I don't think anything has changed in that respect.  If there is reason
to believe that code that uses fprintf() is easier to share with the
backend than alternatives, then nothing is standing in the way of
continuing to use that.

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services