Re: Injection points: some tools to wait and wake

> On 26 Feb 2024, at 08:57, Michael Paquier <michael(at)paquier(dot)xyz> wrote:
>
> <v4-0001-injection_points-Add-routines-to-wait-and-wake-pr.patch>

Would it be possible to have a helper function to check this:

+ok( $node_standby->poll_query_until(
+ 'postgres',
+ qq[SELECT count(*) FROM pg_stat_activity
+ WHERE backend_type = 'checkpointer' AND wait_event = 'CreateRestartPoint' ;],
+ '1'),
+ 'checkpointer is waiting in restart point'
+) or die "Timed out while waiting for checkpointer to run restart point”;

So that we could do something like

ok(node_standby->await_injection_point(“CreateRestartPoint”,”checkpointer"));

IMO, this could make many tests cleaner.
Or, perhaps, it’s a functionality for a future development?

Thanks!

Best regards, Andrey Borodin.