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Re: psql \conninfo command (was: Patch: psql \whoami option)

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
Cc: David Christensen <david(at)endpoint(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Steve Singer <ssinger_pg(at)sympatico(dot)ca>, pgsql-hackers Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: psql \conninfo command (was: Patch: psql \whoami option)
Date: 2010-07-22 02:57:22
Message-ID: AANLkTime1W82W2PHH_mH6qllGSf_PqyDzSoq3QOBCDNy@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Wed, Jul 21, 2010 at 9:48 PM, Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
> On Wed, Jul 21, 2010 at 7:29 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> On Wed, Jul 21, 2010 at 1:07 AM, Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
>>> On Tue, Jul 20, 2010 at 11:14 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>>>> OK, committed.
>>>
>>> When I specify the path of the directory for the Unix-domain socket
>>> as the host, \conninfo doesn't mention that this connection is based
>>> on the Unix-domain socket. Is this intentional?
>>>
>>> $ psql -h"/tmp" -c"\conninfo"
>>> You are connected to database "postgres" on host "/tmp" at port "5432"
>>> as user "postgres".
>>>
>>> I expected that something like
>>>
>>>    You are connected to database "postgres" via local socket on
>>> "/tmp" at port "5432" as user "postgres".
>>
>> :-(
>>
>> No, I didn't realize the host field could be used that way.  It's true
>> that you get a fairly similar message from \c, but that's not exactly
>> intuitive either.
>>
>> rhaas=# \c - - /tmp -
>> You are now connected to database "rhaas" on host "/tmp".
>
> OK. The attached patch makes \conninfo command emit the following
> message if the host begins with a slash:
>
>    $ psql -h/tmp -c"\conninfo"
>    You are connected to database "postgres" via local socket on
> "/tmp" at port "5432" as user "postgres".
>
> Similarly, it makes \c command emit the following message in that
> case:
>
>    $ psql -hlocalhost -c"\c - - /tmp -"
>    You are now connected to database "postgres" via local socket on "/tmp".
>
> Comments?

Should we be using is_absolute_path() here instead, as libpq does?

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company

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Next:From: Robert HaasDate: 2010-07-22 02:59:32
Subject: Re: psql \conninfo command (was: Patch: psql \whoami option)
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Subject: Re: Synchronous replication

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