Re: [PATCH] Add inline comments to the pg_hba_file_rules view

Hi

On 11.09.23 00:33, Michael Paquier wrote:
> Well, it looks like what I wrote a couple of days ago was perhaps
> confusing:
> https://www.postgresql.org/message-id/ZPHAiNp%2ByKMsa/vc%40paquier.xyz
> https://www.postgresql.org/message-id/ZPE8A7EnUH+ax5kw@paquier.xyz
>
> This patch touches hbafuncs.c and the system view pg_hba_file_rules,
> but I don't think this stuff should touch any of these code paths.
> That's what I meant in my second message: the SQL portion should be
> usable for all types of configuration files, even pg_ident.conf and
> postgresql.conf, and not only pg_hba.conf. A new SQL function
> returning a SRF made of the comments extracted and the line numbers
> can be joined with all the system views of the configuration files,
> like sourcefile and sourceline in pg_settings, etc.
> --
> Michael

Thanks for the feedback.

I indeed misunderstood what you meant in the other thread, as you
explicitly only mentioned hba.c.

The change to hbafunc.c was mostly a function call and a new column to
the view:

comment = GetInlineComment(hba->rawline);
if(comment)
   values[index++] = CStringGetTextDatum(comment);
else
   nulls[index++] = true;

Just to make sure I got what you have in mind: you suggest to read the
pg_hba.conf a second time via a new (generic) function like
pg_read_file() that returns line numbers and their contents (+comments),
and the results of this new function would be joined pg_hba_file_rules
in SQL. Is that correct?

Thanks