blob: ed1e06276c51db26fe3e689a0ba60b982e2a68d3 [file] [log] [blame]
# Copyright 2017-present Open Networking Foundation
#
# 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.
import random
from xos.exceptions import XOSValidationError
from models_decl import VOLTService_decl
from models_decl import VOLTServiceInstance_decl
from models_decl import OLTDevice_decl
from models_decl import PONPort_decl
from models_decl import NNIPort_decl
from models_decl import ONUDevice_decl
class VOLTService(VOLTService_decl):
class Meta:
proxy = True
@staticmethod
def has_access_device(serial_number):
try:
ONUDevice.objects.get(serial_number=serial_number)
return True
except IndexError, e:
return False
class VOLTServiceInstance(VOLTServiceInstance_decl):
class Meta:
proxy = True
class OLTDevice(OLTDevice_decl):
class Meta:
proxy = True
def get_volt_si(self):
return VOLTServiceInstance.objects.all()
def delete(self, *args, **kwargs):
onus = []
pon_ports = self.pon_ports.all()
for port in pon_ports:
onus = onus + list(port.onu_devices.all())
if len(onus) > 0:
onus = [o.id for o in onus]
# find the ONUs used by VOLTServiceInstances
used_onus = [o.onu_device_id for o in self.get_volt_si()]
# find the intersection between the onus associated with this OLT and the used one
used_onus_to_delete = [o for o in onus if o in used_onus]
if len(used_onus_to_delete) > 0:
if hasattr(self, "device_id") and self.device_id:
item = self.device_id
elif hasattr(self, "name") and self.name:
item = self.name
else:
item = self.id
raise XOSValidationError('OLT "%s" can\'t be deleted as it has subscribers associated with its ONUs' % item)
super(OLTDevice, self).delete(*args, **kwargs)
class PONPort(PONPort_decl):
class Meta:
proxy = True
def generate_tag(self):
# NOTE this method will loop if available c_tags are ended
tag = random.randint(16, 4096)
if tag in self.get_used_s_tags():
return self.generate_tag()
return tag
def get_used_s_tags(self):
same_olt_device = OLTDevice.objects.filter(device_id=self.olt_device)
return [s.c_tag for s in same_olt_device]
def save(self, *args, **kwargs):
# validate s_tag
if hasattr(self, 's_tag') and self.s_tag is not None:
is_update_with_same_tag = False
if not self.is_new:
# if it is an update, but the tag is the same, skip validation
existing = PONPort.objects.filter(s_tag=self.s_tag)
if len(existing) > 0 and existing[0].s_tag == self.s_tag and existing[0].id == self.id:
is_update_with_same_tag = True
if self.s_tag in self.get_used_s_tags() and not is_update_with_same_tag:
raise XOSValidationError(
"The s_tag you specified (%s) has already been used on device %s" % (self.s_tag, self.onu_device))
if not hasattr(self, "s_tag") or self.s_tag is None:
self.s_tag = self.generate_tag()
super(PONPort, self).save(*args, **kwargs)
class NNIPort(NNIPort_decl):
class Meta:
proxy = True
class ONUDevice(ONUDevice_decl):
class Meta:
proxy = True