calendar.ical.get_upcoming_events should fail hard if there was any exception/unsuccessful response

The error should not be swallowed and it should be instead propagated up
to calendar.get_upcoming_events, if it's called from that context. And
calendar.get_upcoming_events should be in charge of handling the
exceptions and make sure that failing to retrieve the events for one
calendar doesn't make the whole method fail.

platypush/plugins/calendar/__init__.py

@@ -110,8 +110,11 @@ class CalendarPlugin(Plugin, CalendarInterface):
         events = []
 
         for calendar in self.calendars:
+            try:
                 cal_events = calendar.get_upcoming_events().output or []
                 events.extend(cal_events)
+            except Exception as e:
+                self.logger.warning('Could not retrieve events: {}'.format(str(e)))
 
         events = sorted(events, key=lambda event:
                         dateutil.parser.parse(

platypush/plugins/calendar/ical.py

@@ -69,21 +69,11 @@ class CalendarIcalPlugin(Plugin, CalendarInterface):
         from icalendar import Calendar
 
         events = []
-        try:
         response = requests.get(self.url)
-        except Exception as e:
-            self.logger.exception(e)
-            return events
+        assert response.ok, \
+                "HTTP error while getting events from {}: {}".format(self.url, response.text)
 
-        if response.ok:
-            calendar = None
-
-            try:
         calendar = Calendar.from_ical(response.text)
-            except Exception as e:
-                self.logger.exception(e)
-                return events
-
         for event in calendar.walk():
             if event.name != 'VEVENT':
                 continue  # Not an event
@@ -99,8 +89,6 @@ class CalendarIcalPlugin(Plugin, CalendarInterface):
                          and event['responseStatus'] in ['accepted', 'tentative'])
                         or not only_participating):
                 events.append(event)
-        else:
-            self.logger.error("HTTP error while getting {}: {}".format(self.url, response))
 
         return events