On Thu, Jun 14, 2012 at 10:55 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> On Wed, Jun 13, 2012 at 12:07 AM, Amit Kapila <amit.kapila@huawei.com> wrote:
>> To achieve the same in dblink, we need to parse the passed connection string
>> and check if it contains fallback_application_name, if yes then its okay,
>> otherwise we need to append fallback_application_name in connection string.
>
> That seems undesirable. I don't think this is important enough to be
> worth reparsing the connection string for. I'd just forget about
> doing it for dblink if there's no cheaper way.
Indeed reparsing connection string is not cheap, but dblink does it for
checking password requirement for non-in dblink_connstr_check when the
local user was not a superuser. So Amit's idea doesn't seem
unreasonable to me, if we can avoid extra PQconninfoParse call.
Just an idea, but how about pushing fallback_application_name handling
into dblink_connstr_check? We reparse connection string unless local
user was a superuser, so it would not be serious overhead in most cases.Although it might require changes in
DBLINK_GET_CONNmacro...
Regards,
--
Shigeru Hanada
