Re: Patch: Implement failover on libpq connect level.

From: Mithun Cy <mithun(dot)cy(at)enterprisedb(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Kuntal Ghosh <kuntalghosh(dot)2007(at)gmail(dot)com>, Catalin Iacob <iacobcatalin(at)gmail(dot)com>, "Tsunakawa, Takayuki" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>, Craig Ringer <craig(at)2ndquadrant(dot)com>, Peter van Hardenberg <pvh(at)pvh(dot)ca>, Peter Eisentraut <peter_e(at)gmx(dot)net>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Patch: Implement failover on libpq connect level.
Date: 2016-12-01 10:00:54
Message-ID: CAD__Ouies5DMSeege+16kPVO0S7uXakHcoOjuJLhvuJRCLw=4w@mail.gmail.com
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On Wed, Nov 30, 2016 at 7:14 AM, Mithun Cy <mithun(dot)cy(at)enterprisedb(dot)com>
wrote:
> Thanks, send query resets the errorMessage. Will fix same.
>
*PQsendQuery()->PQsendQueryStart()->resetPQExpBuffer(&conn->errorMessage);*

*Please find the patch which fixes this bug. **conn->errorMessage as per
definition only stores current error message, a new member*
*conn->savedMessage is introduced to save and restore error messages
related to previous hosts which we failed to connect.*

--
Thanks and Regards
Mithun C Y
EnterpriseDB: http://www.enterprisedb.com

Attachment Content-Type Size
failover-to-new-writable-session_bugfix_01.patch application/octet-stream 3.6 KB

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