Refactor of caching & data storage part 1

core/cleanup.py

@@ -1,73 +0,0 @@
-import logging
-from datetime import datetime
-from threading import Event, Thread
-
-import pytz
-
-
-class CleanupTimer:
-    """Provides a timed cleanup of the spot list."""
-
-    def __init__(self, spots, alerts, web_server, cleanup_interval):
-        """Constructor"""
-
-        self._spots = spots
-        self._alerts = alerts
-        self._web_server = web_server
-        self._cleanup_interval = cleanup_interval
-        self.last_cleanup_time = datetime.min.replace(tzinfo=pytz.UTC)
-        self.status = "Starting"
-        self._thread = None
-        self._stop_event = Event()
-
-    def start(self):
-        """Start the cleanup timer"""
-
-        self._thread = Thread(target=self._run, daemon=True)
-        self._thread.start()
-
-    def stop(self):
-        """Stop any threads and prepare for application shutdown"""
-
-        self._stop_event.set()
-
-    def _run(self):
-        while not self._stop_event.wait(timeout=self._cleanup_interval):
-            self._cleanup()
-
-    def _cleanup(self):
-        """Perform cleanup and reschedule next timer"""
-
-        try:
-            # Perform cleanup via letting the data expire
-            self._spots.expire()
-            self._alerts.expire()
-
-            # Explicitly clean up any spots and alerts that have expired
-            for i in list(self._spots.iterkeys()):
-                try:
-                    spot = self._spots[i]
-                    if spot.expired():
-                        self._spots.delete(i)
-                except KeyError:
-                    # Must have already been deleted, OK with that
-                    pass
-            for i in list(self._alerts.iterkeys()):
-                try:
-                    alert = self._alerts[i]
-                    if alert.expired():
-                        self._alerts.delete(i)
-                except KeyError:
-                    # Must have already been deleted, OK with that
-                    pass
-
-            # Clean up web server SSE spot/alert queues
-            self._web_server.clean_up_sse_queues()
-
-            self.status = "OK"
-            self.last_cleanup_time = datetime.now(pytz.UTC)
-
-        except Exception:
-            self.status = "Error"
-            logging.exception("Exception in Cleanup thread")
-            self._stop_event.wait(timeout=1)