def _parents_available(self):
"""Indicates whether a state action can be performed;
checks if parent nodes are up & running and all OIDs indicate 'on' status
Returns:
bool: True if parents are available
"""
asset_keys, oid_keys = GraphReference.get_parent_keys(
self._graph_ref.get_session(), self._asset_key
)
# if wall-powered, check the mains
if not asset_keys and not ISystemEnvironment.power_source_available():
return False
state_managers = list(map(self.get_state_manager_by_key, asset_keys))
min_volt_value = self.min_voltage_prop()
# check if power is present
enough_voltage = len(
list(filter(lambda sm: sm.output_voltage > min_volt_value, state_managers))
)
parent_assets_up = len(list(filter(lambda sm: sm.status, state_managers)))
oid_clause = (
lambda rvalue, rkey: rvalue.split(b"|")[1].decode()
== oid_keys[rkey]["switchOff"]
)
oids_on = self._check_parents(oid_keys.keys(), oid_clause)
return (parent_assets_up and enough_voltage and oids_on) or (not asset_keys)
def set_parent_oid_states(self, state):
"""Bulk-set parent oid values
Args:
state(OutletState): new parent(s) state
"""
with self._graph_ref.get_session() as session:
_, oids = GraphReference.get_parent_keys(session, self._asset_key)
oid_keys = oids.keys()
parents_new_states = {}
parent_values = StateManager.get_store().mget(oid_keys)
for rkey, rvalue in zip(oid_keys, parent_values):
# datatype -> {} | {} <- value
parents_new_states[rkey] = "{}|{}".format(
rvalue.split(b"|")[0].decode(), oids[rkey][state.name])
StateManager.get_store().mset(parents_new_states)
