implemented endpoint to remove expired leases

app/main.py

@@ -186,6 +186,12 @@ async def _leases(request: Request, origin: bool = False):
     return JSONr(response)
 
 
+@app.delete('/-/leases/expired', summary='* Leases')
+async def _lease_delete_expired(request: Request):
+    Lease.delete_expired(db)
+    return Response(status_code=201)
+
+
 @app.delete('/-/lease/{lease_ref}', summary='* Lease')
 async def _lease_delete(request: Request, lease_ref: str):
     if Lease.delete(db, lease_ref) == 1:

app/orm.py

@@ -160,6 +160,14 @@ def delete(engine: Engine, lease_ref: str) -> int:
         session.close()
         return deletions
 
+    @staticmethod
+    def delete_expired(engine: Engine) -> int:
+        session = sessionmaker(bind=engine)()
+        deletions = session.query(Lease).filter(Lease.lease_expires <= datetime.utcnow()).delete()
+        session.commit()
+        session.close()
+        return deletions
+
     @staticmethod
     def calculate_renewal(renewal_period: float, delta: timedelta) -> timedelta:
         """