def handle_oid_update(self, asset_key, oid, value):
"""React to OID update
Args:
asset_key(int): key of the asset oid belongs to
oid(str): updated oid
value(str): OID value
"""
if asset_key not in self._assets:
logger.warning("Asset [%s] does not exist!", asset_key)
return
# get asset key associated with the oid & oid details
affected_asset_key, oid_details = self._data_source.get_asset_oid_info(
asset_key, oid
)
if not oid_details:
logger.warning(
"OID:[%s] for asset:[%s] cannot be processed by engine!", oid, asset_key
)
return
snmp_event = events.SNMPEvent(
asset=self._assets[affected_asset_key],
oid=oid,
oid_value_name=oid_details["specs"][value],
oid_name=oid_details["name"],
)
self._power_iter_handler.queue_iteration(PowerIteration(snmp_event))
def handle_voltage_update(self, old_voltage, new_voltage):
"""Wallpower voltage changes to a new value,
initiate a chain of power reactions
Args:
old_voltage(float): old voltage value
new_voltage(float): new wallpower voltage value
"""
if math.isclose(old_voltage, new_voltage):
return
volt_event = events.AssetPowerEvent(
asset=None, old_out_volt=old_voltage, new_out_volt=new_voltage
)
self._notify_trackers(volt_event)
if math.isclose(old_voltage, 0.0) or math.isclose(new_voltage, 0.0):
self._notify_trackers(
events.MainsPowerEvent(mains=int(math.isclose(old_voltage, 0.0)))
)
self._power_iter_handler.queue_iteration(PowerIteration(volt_event))
def handle_state_update(self, asset_key, old_state, new_state):
"""Asset state changes to a new value,
initiate a chain of power reactions
Args:
asset_key(int): key of the updated asset
state(int): 0 for offline, 1 for online
"""
if old_state == new_state:
return
updated_asset = self._assets[asset_key]
# notify updated hardware device of button event
btn_event = (events.PowerButtonOnEvent
if new_state else events.PowerButtonOffEvent)
self._power_iter_handler.queue_iteration(
PowerIteration(
btn_event(old_state=old_state,
new_state=new_state,
asset=updated_asset)))