def create(self, data):
data['orientation'] = RackOrientation.id_from_name(data['orientation'])
data['server_room'] = ServerRoom.objects.get(
pk=int(data['server_room'])
)
return Rack.objects.create(**data)
def get_orientation_desc(self):
return RackOrientation.name_from_id(self.orientation)
def update(self, data):
data['server_room'] = ServerRoom.objects.get(
pk=data['server_room']
)
data['orientation'] = RackOrientation.id_from_name(data['orientation'])
return super(RackBaseSerializer, self).update(self.instance, data)
class Rack(AdminAbsoluteUrlMixin, NamedMixin.NonUnique, models.Model):
_allow_in_dashboard = True
server_room = models.ForeignKey(
ServerRoom, verbose_name=_('server room'),
null=True,
blank=False,
)
server_room._autocomplete = False
server_room._filter_title = _('server room')
description = models.CharField(
_('description'), max_length=250, blank=True
)
orientation = models.PositiveIntegerField(
choices=RackOrientation(),
default=RackOrientation.top.id,
)
max_u_height = models.IntegerField(default=48)
visualization_col = models.PositiveIntegerField(
verbose_name=_('column number on visualization grid'),
default=0,
)
visualization_row = models.PositiveIntegerField(
verbose_name=_('row number on visualization grid'),
default=0,
)
accessories = models.ManyToManyField(Accessory, through='RackAccessory')
require_position = models.BooleanField(
default=True,
help_text=_(
'Uncheck if position is optional for this rack (ex. when rack '
'has warehouse-kind role'
)
)
reverse_ordering = models.BooleanField(
default=settings.RACK_LISTING_NUMBERING_TOP_TO_BOTTOM,
help_text=_(
'Check if RU numbers count from top to bottom with position 1 '
'starting at the top of the rack. If unchecked position 1 is '
'at the bottom of the rack'
),
verbose_name=_('RU order top to bottom'),
)
class Meta:
unique_together = ('name', 'server_room')
def __str__(self):
if self.server_room:
return "{} ({}/{})".format(
self.name,
self.server_room.data_center,
self.server_room.name,
)
return self.name
def get_orientation_desc(self):
return RackOrientation.name_from_id(self.orientation)
def get_root_assets(self, side=None):
filter_kwargs = {
'rack': self,
}
if side:
filter_kwargs['orientation'] = side
else:
filter_kwargs['orientation__in'] = [
Orientation.front, Orientation.back
]
return DataCenterAsset.objects.select_related(
'model', 'model__category'
).filter(
Q(slot_no='') | Q(slot_no=None), **filter_kwargs
).exclude(model__has_parent=True)
def get_free_u(self):
u_list = [True] * self.max_u_height
accessories = RackAccessory.objects.values_list(
'position').filter(rack=self)
dc_assets = self.get_root_assets().values_list(
'position', 'model__height_of_device'
)
def fill_u_list(objects, height_of_device=lambda obj: 1):
for obj in objects:
# if position is None when objects simply does not have
# (assigned) position and position 0 is for some
# accessories (pdu) with left-right orientation and
# should not be included in free/filled space.
if obj[0] == 0 or obj[0] is None:
continue
start = obj[0] - 1
end = min(
self.max_u_height, obj[0] + int(height_of_device(obj)) - 1
)
height = end - start
if height:
u_list[start:end] = [False] * height
fill_u_list(accessories)
fill_u_list(dc_assets, lambda obj: obj[1])
return sum(u_list)
def get_pdus(self):
return DataCenterAsset.objects.select_related('model').filter(
rack=self,
orientation__in=(Orientation.left, Orientation.right),
position=0,
)