Use SSE frontend #3

spothole.py

@@ -1,14 +1,18 @@
 # Main script
+from time import sleep
+
+import gevent
+from gevent import monkey; monkey.patch_all()
+
 import importlib
 import logging
 import signal
 import sys
 
 from diskcache import Cache
-from gevent import monkey; monkey.patch_all()
 
 from core.cleanup import CleanupTimer
-from core.config import config, WEB_SERVER_PORT, SERVER_OWNER_CALLSIGN, MAX_SPOT_AGE
+from core.config import config, WEB_SERVER_PORT, SERVER_OWNER_CALLSIGN
 from core.constants import SOFTWARE_NAME, SOFTWARE_VERSION
 from core.lookup_helper import lookup_helper
 from core.status_reporter import StatusReporter
@@ -22,10 +26,13 @@ status_data = {}
 spot_providers = []
 alert_providers = []
 cleanup_timer = None
+run = True
 
 
 # Shutdown function
 def shutdown(sig, frame):
+    global run
+
     logging.info("Stopping program, this may take a few seconds...")
     for p in spot_providers:
         if p.enabled:
@@ -37,6 +44,7 @@ def shutdown(sig, frame):
     lookup_helper.stop()
     spots.close()
     alerts.close()
+    run = False
 
 
 # Utility method to get a spot provider based on the class specified in its config entry.
@@ -105,3 +113,7 @@ if __name__ == '__main__':
     status_reporter.start()
 
     logging.info("Startup complete.")
+
+    while run:
+        gevent.sleep(1)
+    exit(0)