Merge pull request #61 from Uninett/add-event-is-down-property

Add method to determine whether event is down

src/zinolib/event_types.py

@@ -174,6 +174,9 @@ def create(cls, attrdict):
         eventobj = subtype(**attrdict)
         return eventobj
 
+    def is_down(self):
+        raise NotImplementedError("Abstract method was called, can not calculate is_down status without event type.")
+
 
 EventType = TypeVar('EventType', bound=Event)
 EventOrId = Union[EventType, int]
@@ -195,6 +198,9 @@ def op_state(self) -> str:
     def description(self) -> Optional[str]:
         return self.lastevent
 
+    def is_down(self) -> bool:
+        return self.alarm_count > 0
+
 
 class BFDEvent(Event):
     type: str = Event.Type.BFD
@@ -219,6 +225,9 @@ def description(self) -> str:
     def op_state(self) -> str:
         return f"BFD  {self.bfd_state[:5]}"
 
+    def is_down(self) -> bool:
+        return self.bfd_state == BFDState.DOWN
+
 
 class BGPEvent(Event):
     type: str = Event.Type.BGP
@@ -247,6 +256,9 @@ def description(self) -> str:
     def op_state(self) -> str:
         return f"BGP  {self.bgp_OS[:5]}"
 
+    def is_down(self) -> bool:
+        return self.bgp_OS == "down"
+
 
 class ReachabilityEvent(Event):
     type: str = Event.Type.REACHABILITY
@@ -260,6 +272,9 @@ class ReachabilityEvent(Event):
     def op_state(self) -> str:
         return self.reachability
 
+    def is_down(self) -> bool:
+        return self.reachability == ReachabilityState.NORESPONSE
+
 
 class PortStateEvent(Event):
     type: str = Event.Type.PORTSTATE
@@ -295,3 +310,6 @@ def get_downtime(self):
             return accumulated + now - lasttrans
         else:
             return accumulated
+
+    def is_down(self) -> bool:
+        return self.port_state in [PortState.DOWN, PortState.LOWER_LAYER_DOWN]