Re: [PATCH] pg_isready (was: [WIP] pg_ping utility)

From: Phil Sorber <phil(at)omniti(dot)com>
To: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Craig Ringer <craig(at)2ndquadrant(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Erik Rijkers <er(at)xs4all(dot)nl>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Dimitri Fontaine <dimitri(at)2ndquadrant(dot)fr>, Peter Eisentraut <peter_e(at)gmx(dot)net>, PostgreSQL-development Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [PATCH] pg_isready (was: [WIP] pg_ping utility)
Date: 2013-01-24 19:10:01
Message-ID: CADAkt-iPAZq39uPi1=5YR7YeZWsP4iTtF_LOJko+q=jLXz1_Og@mail.gmail.com
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On Thu, Jan 24, 2013 at 1:12 PM, Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
> set_pglocale_pgservice() should be called?
>
> I think that the command name (i.e., pg_isready) should be given to
> PQpingParams() as fallback_application_name. Otherwise, the server
> by default uses "unknown" as the application name of pg_isready.
> It's undesirable.
>
> Why isn't the following message output only when invalid option is
> specified?
>
> Try \"%s --help\" for more information.

I've updated the patch to address these three issues. Attached.

>
> When the conninfo string including the hostname or port number is
> specified in -d option, pg_isready displays the wrong information
> as follows.
>
> $ pg_isready -d "port=9999"
> /tmp:5432 - no response
>

This is what i asked about in my previous email about precedence of
the parameters. I can parse that with PQconninfoParse, but what are
the rules for merging both individual and conninfo params together?

For example if someone did: pg_isready -h foo -d "host=bar port=4321" -p 1234

What should the connection parameters be?

> Regards,
>
> --
> Fujii Masao

Attachment Content-Type Size
pg_isready_timeout_v3.diff application/octet-stream 5.8 KB

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