I'm trying to make use of the Postgres Listen/Notify feature in my AnyEvent-based program. I tried looking for a ready solution and found AnyEvent::Pg on CPAN, but I've not been able to get the module to work (and the developer does mention that it is in very early development). So I was trying to figure out the best way to set this up with the tools I have.

Listen/Notify is supported by DBD:Pg, so the solution I came up with is to poll $dbh to see if a notification has been received, like so (posting only the relevant code):

my $w = AnyEvent->timer (
    after => 0, 
    interval => 2, 
    cb => sub {
        if (my $notify = $dbh->pg_notifies){
            # Do something
        }
    }
);

[download]

This works. However, I'm not sure this is the best way to do it because I'm just not that familiar with event-based programming. I would really appreciate alternate solutions / thoughts from more knowledgeable people...

In reply to AnyEvent and Postgres Listen/Notify by xtpu2

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