sushy-tools/sushy_tools/emulator/resources/indicators.py

79 lines
2.5 KiB
Python

# Copyright 2019 Red Hat, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from sushy_tools.emulator import memoize
from sushy_tools.emulator.resources import base
from sushy_tools import error
class StaticDriver(base.DriverBase):
"""Redfish indicator LED simulator
Maintain indicators states in memory. Does not light up
anything.
"""
def __init__(self, config, logger):
super().__init__(config, logger)
self._indicators = memoize.PersistentDict()
if hasattr(self._indicators, 'make_permanent'):
self._indicators.make_permanent(
self._config.get('SUSHY_EMULATOR_STATE_DIR'), 'indicators')
self._indicators.update(
self._config.get('SUSHY_EMULATOR_INDICATOR_LEDS', {}))
@property
def driver(self):
"""Return human-friendly driver information
:returns: driver information as `str`
"""
return '<static-indicators>'
@property
def indicators(self):
"""Return available Redfish indicators
:returns: list of UUIDs representing the indicators
"""
return list(self._indicators)
def get_indicator_state(self, identity):
"""Get indicator state
:param identity: indicator identity
:returns: indicator state as one of *Lit*, *Blinking*,
*Off*
"""
if identity not in self._indicators:
self._indicators[identity] = 'Lit'
return self._indicators[identity]
def set_indicator_state(self, identity, state):
"""Set indicator state
:param identity: indicator identity
:param state: indicator state as one of *Lit*, *Blinking*, *Off*
:raises: `error.FishyError` if desired state can't be set
"""
if state not in ('Lit', 'Off', 'Blinking'):
raise error.FishyError(
'Unknown indicator state %s, ID %s' % (state, identity))
self._indicators[identity] = state