class Device(models.Model):
name = models.CharField(max_length=30)
device_class = models.ForeignKey(DeviceClass)
server_name = models.CharField(max_length=30, blank=True)
argument = models.CharField(max_length=30, blank=True)
depends_on = models.ManyToManyField('Device',
related_name='depends',
symmetrical=False,
blank=True)
location = models.ForeignKey(Location)
hidden = models.BooleanField(default=False)
power_state = models.ForeignKey(State)
def __unicode__(self):
return self.name
def __init__(self, *args, **kwargs):
super(Device, self).__init__(*args, **kwargs)
if not hasattr(self, 'device_class'):
return
c = self.device_class
if c.device_type.value in [
control_pb2.APC, control_pb2.PC_WIN, control_pb2.PC_LINUX,
control_pb2.UFO, control_pb2.IPPOWER, control_pb2.IPMI
]:
server = 'localhost'
else:
server = self.server_name
self.service = RpcService(control_pb2.ControlService_Stub, 10021,
server)
d_pb = control_pb2.Device()
d_pb.type = c.device_type.value
d_pb.server = self.server_name
d_pb.port = str(self.argument)
self.pb = control_pb2.Device()
self.pb.CopyFrom(d_pb)
def send_get(self, feature_type):
request = control_pb2.GetRequest()
request.device.CopyFrom(self.pb)
request.type = feature_type
response = self.service.Get(request, timeout=10000)
if not response.result:
log.error('Invalide answer: ' + response.error)
return response
def send_set(self, feature_type, value):
request = control_pb2.SetRequest()
request.device.CopyFrom(self.pb)
request.type = feature_type
request.value = value
response = self.service.Set(request, timeout=1000)
if not response.result:
log.error('Invalide answer: ' + response.error)
return response
def get_pwr(self):
for d in self.depends_on.all():
response = d.get_pwr()
if response.value != control_pb2.POWER_ON:
return response
return self.send_get(control_pb2.FEAT_PWR)
def send_pwr(self, value):
# no protection for recursive dependencies.
if value == control_pb2.POWER_ON:
# power other device first
for d in self.depends_on.all():
d.send_pwr(value)
response = self.send_set(control_pb2.FEAT_PWR, value)
if response.result:
self.power_state = State.objects.get(value=value)
self.save()
if value == control_pb2.POWER_OFF:
for d in self.depends_on.all():
d.send_pwr(value)