Werk #11260: Fix crash in EC configuration (regression since 1.6.0p14)

When there were open events in the Event Console that were created by a rule that was removed from the Event Console, this resulted in an exception on the Event Console configuration page (IndexError (list index out of range)).

However, this message was rather a consequence error. The original error message was found in var/log/mkeventd.log. There you could find messages of this kind:

2020-08-27 14:19:42,913 [40] [cmk.mkeventd.StatusServer] Error handling client : 'my_rule'
Traceback (most recent call last):
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 3031, in serve
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 3071, in handle_client
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 3092, in _answer_query
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 2753, in query
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 2871, in _enumerate
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 736, in get_status
    row += self._add_event_limit_status()
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 766, in _add_event_limit_status
    self.get_rules_with_active_event_limit(),
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 1784, in get_rules_with_active_event_limit
    if num_events >= self._get_rule_event_limit(rule_id)[0]:
  File "/omd/sites/stable/lib/python/cmk/ec/main.py", line 1885, in _get_rule_event_limit
    rule = self._rule_by_id.get(rule_id)
KeyError: 'my_rule'

Zur Liste aller Werks