def keep_device_heart(device_code):
# 先获得心跳的主键
device_heart_key = RedisClient.get_device_heart_key(device_code)
redis_device_client.setex(device_heart_key,
DEFAULT_EXPIRED_DEVICE_HEART,
int(time.time()))
def get_device_alive_status(device):
if isinstance(device, basestring):
device_code = device
elif isinstance(device, Device):
device_code = device.device_code
else:
log.error("当前设备参数获取存活状态不正确: device = {} type = {}".format(
device, type(device)))
return Device.ALIVE_OFFLINE
# 先获得心跳的主键
device_heart_key = RedisClient.get_device_heart_key(device_code)
last_heart_time = redis_device_client.get(device_heart_key)
if last_heart_time is None:
return Device.ALIVE_OFFLINE
return Device.ALIVE_ONLINE
def delete_device(device_id):
device = DeviceService.get_device_by_id(device_id)
if device is None:
log.warn("当前需要删除的设备不存在: device_id = {}".format(device_id))
return False
# 当前设备在线，且设备正在被用户使用，则不能够删除
if DeviceService.get_device_alive_status(device) == Device.ALIVE_ONLINE and \
DeviceService.get_device_status(device) != DeviceStatus.STATUE_FREE:
log.warn("当前设备不处于空闲状态，不能删除: device_id = {}".format(device.id))
return False
# 删除设备状态缓存信息
device_status_key = RedisClient.get_device_status_key(
device.device_code)
redis_device_client.delete(device_status_key)
# 删除设备更新状态缓存
device_update_status_key = RedisClient.get_device_update_status_key(
device.device_code)
redis_device_client.delete(device_update_status_key)
# 删除设备心跳缓存
device_heart_key = RedisClient.get_device_heart_key(device.device_code)
redis_device_client.delete(device_heart_key)
# 删除设备上的游戏
DeviceGameService.delete_deploy_device_game(device.id)
if not device.delete():
log.warn("设备信息删除失败: {}".format(
json.dumps(device.to_dict(), ensure_ascii=False)))
return False
return True