| from core.models.plcorebase import * |
| from models_decl import VSMService_decl |
| from models_decl import VSMVendor_decl |
| from models_decl import VSMTenant_decl |
| |
| from django.db import models |
| from core.models import Service, PlCoreBase, Slice, Instance, Tenant, TenantWithContainer, Node, Image, User, Flavor, NetworkParameter, NetworkParameterType, Port, AddressPool |
| from core.models.plcorebase import StrippedCharField |
| import os |
| from django.db import models, transaction |
| from django.forms.models import model_to_dict |
| from django.db.models import * |
| from operator import itemgetter, attrgetter, methodcaller |
| from core.models import Tag |
| from core.models.service import LeastLoadedNodeScheduler |
| import traceback |
| from xos.exceptions import * |
| from xos.config import Config |
| |
| class VSMService(VSMService_decl): |
| class Meta: |
| proxy = True |
| |
| def create_tenant(self, **kwargs): |
| t = VSMTenant(kind="vEPC", provider_service=self, connect_method="na", **kwargs) |
| t.save() |
| return t |
| |
| class VSMVendor(VSMVendor_decl): |
| class Meta: |
| proxy = True |
| |
| class VSMTenant(VSMTenant_decl): |
| class Meta: |
| proxy = True |
| |
| def __init__(self, *args, **kwargs): |
| vsmservice = VSMService.get_service_objects().all() |
| if vsmservice: |
| self._meta.get_field( |
| "provider_service").default = vsmservice[0].id |
| super(VSMTenant, self).__init__(*args, **kwargs) |
| |
| @property |
| def image(self): |
| if not self.vsm_vendor: |
| return super(VSMTenant, self).image |
| return self.vsm_vendor.image |
| |
| def save_instance(self, instance): |
| if self.vsm_vendor: |
| instance.flavor = self.vsm_vendor.flavor |
| super(VSMTenant, self).save_instance(instance) |
| |
| def save(self, *args, **kwargs): |
| if not self.creator: |
| if not getattr(self, "caller", None): |
| raise XOSProgrammingError("VSMTenant's self.caller was not set") |
| self.creator = self.caller |
| if not self.creator: |
| raise XOSProgrammingError("VSMTenant's self.creator was not set") |
| |
| super(VSMTenant, self).save(*args, **kwargs) |
| # This call needs to happen so that an instance is created for this |
| # tenant is created in the slice. One instance is created per tenant. |
| model_policy_vsmtenant(self.pk) |
| |
| def delete(self, *args, **kwargs): |
| # Delete the instance that was created for this tenant |
| self.cleanup_container() |
| super(VSMTenant, self).delete(*args, **kwargs) |
| |
| def model_policy_vsmtenant(pk): |
| # This section of code is atomic to prevent race conditions |
| with transaction.atomic(): |
| # We find all of the tenants that are waiting to update |
| tenant = VSMTenant.objects.select_for_update().filter(pk=pk) |
| if not tenant: |
| return |
| # Since this code is atomic it is safe to always use the first tenant |
| tenant = tenant[0] |
| tenant.manage_container() |