handling some exceptions in simple state checker

backend/tools/simple_state_checker.py

@@ -10,8 +10,10 @@ import requests
 from requests.auth import HTTPBasicAuth
 from multiprocessing.pool import ThreadPool
 from multiprocessing.context import TimeoutError
+from tatsu.exceptions import ParseException
 
 from ics import Calendar
+from ics.grammar.parse import ParseError
 
 from backend import LrcException
 from backend.config import Config
@@ -66,8 +68,13 @@ def get_calender(rec_id):
     url = get_service_url('org.opencastproject.scheduler') + "/calendars"
     res = session.get(url, params=params)
     if res.ok:
-        logger.debug(res.text)
+
+        try:
             return Calendar(res.text)
+        except (ValueError, ParseException, IndexError, ParseError) as ex:
+            logger.debug(res.text)
+            logger.error("Could not parse calendar for agent {}! ({})".format(rec_id, ex))
+            return None
 
 
 def get_capture_agents():
@@ -109,6 +116,9 @@ def get_recorder_adapter(recorder_info: dict) -> RecorderAdapter:
 def check_capture_agent_state(a: dict):
     logger.debug("Checking Agent {}".format(a['name']))
     c = get_calender(a['name'])
+    if c is None:
+        logger.error("Could not get calendar for agent {}!".format(a['name']))
+        return
     is_recording_in_calendar = len(list(c.timeline.now())) >= 1
     if is_recording_in_calendar:
         logger.info("{} has entry in Calender and should therefore be recording... checking now!".format(a['name']))