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Scheduler can send task twice #296

@sector119

Description

@sector119

Hello

In run_scheduler_loop function in next_minute calculation if datetime.now() = 17:22:59.55555 and we replace seconds and microseconds with 0 and add timedelta(minutes=1) we get next_minute=17:23:00
and when we calculate delay with delay = next_minute - datetime.now(), current time can be > or just a bit lower than next_minute, so we get negative delay like -0.000299 or positive like 0.000373

Don't you think that we should check delay like:

delay = (next_minute - datetime.now()).total_seconds()

if int(delay) <= 0:
    delay = 60.0

await asyncio.sleep(delay)

Logs:

Next minute: 2024-02-22 14:13:00
Now: 2024-02-22 14:13:00.000299
Delay: -1 day, 23:59:59.999701
Delay total seconds: -0.000299
[2024-02-22 14:13:00,000][INFO ][run:delayed_send:130] Sending task billing:sync-payments.

Next minute: 2024-02-22 14:14:00
Now: 2024-02-22 14:13:00.001998
Delay: 0:00:59.998002
Delay total seconds: 59.998002
[2024-02-22 14:13:00,002][INFO ][run:delayed_send:130] Sending task billing:sync-payments.

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