add scheduler middleware

app/main.py

@@ -77,5 +77,5 @@ app.add_middleware(SchedulerMiddleware, scheduler=_scheduler_himself)
 
 
 # TODO: every not GET meth should reset cache
-# TODO: every scheduler task which needs to act on database hsould have access to connection pool via request
+# TODO: every scheduler task which needs to act on database should have access to connection pool via request - maybe ?
 # TODO: https://stackoverflow.com/questions/16053364/make-sure-only-one-worker-launches-the-apscheduler-event-in-a-pyramid-web-app-ru

app/services/scheduler.py

@@ -1,23 +1,26 @@
 from datetime import datetime
 
+from sqlalchemy import text
 from starlette.types import ASGIApp, Receive, Scope, Send
-
 from apscheduler import AsyncScheduler
 from apscheduler.triggers.interval import IntervalTrigger
 
+from app.database import AsyncSessionFactory
 from app.utils.logging import AppLogger
 
 logger = AppLogger().get_logger()
 
 
-def tick():
-
-    logger.info(f">>>> Be or not to be...{datetime.now()}")
+async def tick():
+    async with AsyncSessionFactory() as session:
+        stmt = text("select 1;")
+        logger.info(f">>>> Be or not to be...{datetime.now()}")
+        result = await session.execute(stmt)
+        logger.info(f">>>> Result: {result.scalar()}")
+        return True
 
 
 class SchedulerMiddleware:
-    # TODO: need access to request to be able to get db conn pool
-
     def __init__(
         self,
         app: ASGIApp,
@@ -30,7 +33,7 @@ class SchedulerMiddleware:
         if scope["type"] == "lifespan":
             async with self.scheduler:
                 await self.scheduler.add_schedule(
-                    tick, IntervalTrigger(seconds=25), id="tick"
+                    tick, IntervalTrigger(seconds=25), id="tick-sql-25"
                 )
                 await self.scheduler.start_in_background()
                 await self.app(scope, receive, send)