| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Peter Eisentraut <peter_e(at)gmx(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Dimitri Fontaine <dimitri(at)2ndquadrant(dot)fr>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Gurjeet Singh <singh(dot)gurjeet(at)gmail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Proof of concept: standalone backend with full FE/BE protocol |
| Date: | 2013-11-21 16:24:43 |
| Message-ID: | CAA4eK1KYQ=A_6CwrTo3h11H8eHHd5nupG9OTV8ckn_wa76E9GA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Nov 21, 2013 at 8:14 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> writes:
>> Here what I have in mind is that:
>> a. In pg_dump or other internal utilities where we want to use this
>> feature, they should call PQenableStart() or some other API before
>> calling PQConnect() which will indicate that it wants to operate
>> as a standalone mode.
>> b. In psql, if user specifies this special switch (
>> 'standalone_datadir'), then internally we will call PQenableStart()
>> and use postgres from same
>> directory.
>
> Why would you make psql behave differently from our other command-line
> clients?
No, psql should not behave different from other clients. Sorry, I
was under assumption that for other programs we will not take backend
executable
path.
One other thing which is not clear to me is that how by calling
some special/new API we can ensure that the path provided by user is
a valid path, are we going to validate file given in
'standalone_backend' switch in some way?
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
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