refactor(Runner): make infinite while loop exit on shutdown_signal

Author: fubuloubu

silverback/runner.py

@@ -135,7 +135,7 @@ async def _cron_tasks(self, cron_tasks: list[TaskData]):
         Handle all cron tasks
         """
 
-        while True:
+        while not self.shutdown_event.is_set():
             # NOTE: Sleep until next exact time boundary (every minute)
             current_time = utc_now()
             wait_time = timedelta(
@@ -333,12 +333,12 @@ async def run(self):
                 If there are no configured tasks to execute.
         """
 
-        # NOTE: No need to display startup text, obvious from loading settings
-        user_tasks = await self.startup()
-
         # NOTE: After startup, we need to gracefully shutdown
         self.shutdown_event = asyncio.Event()
 
+        # NOTE: No need to display startup text, obvious from loading settings
+        user_tasks = await self.startup()
+
         def exit_handler(signum, _frame):
             logger.info(f"{signal.Signals(signum).name} signal received")
             self.shutdown_event.set()