Re: [Bug fix] PQsendQuery occurs error when target_session_attrs is set to read-write

On Thu, Feb 16, 2017 at 10:55 AM, Michael Paquier
<michael(dot)paquier(at)gmail(dot)com> wrote:
> It is possible to get a test easily in this area by abusing of the
> fact that multiple -d switches defined in psql make it use only the
> last value. By looking at psql() in PostgresNode.pm you would see what
> I mean as -d is defined by default. Or we could just enforce
> PGHOST/PGPORT as there is a method to get the unix domain directory.
> Not sure which one of those two methods is most elegant though. I
> would tend for just using PGHOST and PGPORT.

What do you think about the patch attached then? As env{PGHOST} is set
once and for all in INIT for each test run, I have gone with the
approach of building connection strings and feed that to psql -d. I
have reused 001_stream_rep.pl so as connections are done on already
existing nodes, making the test really cheap. Here is how the tests
look:
# testing connection parameter target_session_attrs
ok 5 - connect to node master if mode "read-write" and master,standby_1 listed
ok 6 - connect to node master if mode "read-write" and standby_1,master listed
ok 7 - connect to node master if mode "any" and master,standby_1 listed
ok 8 - connect to node standby_1 if mode "any" and standby_1,master listed

I have registered an entry in the CF here:
https://commitfest.postgresql.org/13/1014/
--
Michael