Emit a warning if the extension's GUC is set incorrectly

Shinya Kato <shinya11.kato@oss.nttdata.com>

From: Shinya Kato <Shinya11.Kato@oss.nttdata.com>

To: pgsql-hackers@postgresql.org

Date: 2021-11-14T10:03:59Z

Lists: pgsql-hackers

Attachments

v1_Add_EmitWarningsOnPlaceholders.patch (text/x-diff) patch v1

Hi hackers,

If wrong GUCs of auth_delay, pg_trgm, postgres_fdw and sepgsql are 
described in postgresql.conf, a warning is not emitted unlike 
pg_stat_statements, auto_explain and pg_prewarm.
So, I improved it by adding EmitWarningsOnPlaceholders.
An example output is shown below.
---
2021-11-14 18:18:16.486 JST [487067] WARNING:  unrecognized 
configuration parameter "auth_delay.xxx"
---

What do you think?

-- 
Regards,

--
Shinya Kato
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION

Commits

Disallow setting bogus GUCs within an extension's reserved namespace.
- 88103567cb8f 15.0 landed
Revert changes about warnings/errors for placeholders.
- cab5b9ab2c06 15.0 landed
Rename EmitWarningsOnPlaceholders() to MarkGUCPrefixReserved().
- 5609cc01c69b 15.0 landed
Rethink handling of settings with a prefix reserved by an extension.
- 2ed8a8cc5b63 15.0 landed
Add missing EmitWarningsOnPlaceholders() calls.
- 1fada5d81e67 15.0 landed
Add EmitWarningsOnPlaceholders calls to contrib modules that are likely to
- da2c1b8a27af 8.4.0 cited