Horton

Re: strange error reporting

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Date: 2021-01-20T17:59:21Z
Lists: pgsql-hackers 
On Wed, Jan 20, 2021 at 12:47 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Fair.  One possibility, which'd take a few more cycles in libpq but
> likely not anything significant, is to replace "could not connect to ..."
> with "while connecting to ..." once we're past the connect() per se.

Yeah. I think this is kind of a client-side version of errcontext(),
except we don't really have that context formally, so we're trying to
figure out how to fake it in specific cases.

> > Maybe it would be better if it said:
>
> > connection to database at socket "/tmp/.s.PGSQL.5432" failed: FATAL:
> > database "rhaas" does not exist
>
> I'd be inclined to spell it "connection to server at ... failed",
> but that sort of wording is surely also possible.

"connection to server" rather than "connection to database" works for
me; in fact, I think I like it slightly better.

-- 
Robert Haas
EDB: http://www.enterprisedb.com

Commits

  1. pgbench: Remove dead code

  2. Report the true database name on connection errors

  3. Avoid redundantly prefixing PQerrorMessage for a connection failure.

  4. Improve new wording of libpq's connection failure messages.