[CORD-2791] Rename Rename VOLTTenant in VOLTServiceInstance
Change-Id: I949f0d5975b6ddde35137dbb8c927b575f3b175f
diff --git a/xos/synchronizer/model_policies/model_policy_voltserviceinstance.py b/xos/synchronizer/model_policies/model_policy_voltserviceinstance.py
new file mode 100644
index 0000000..e807441
--- /dev/null
+++ b/xos/synchronizer/model_policies/model_policy_voltserviceinstance.py
@@ -0,0 +1,93 @@
+
+# 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.
+
+
+from synchronizers.new_base.modelaccessor import VOLTServiceInstance, ServiceInstanceLink, VSGService, VSGServiceInstance, model_accessor
+from synchronizers.new_base.policy import Policy
+
+class VOLTServiceInstancePolicy(Policy):
+ model_name = "VOLTServiceInstance"
+
+ def handle_create(self, tenant):
+ return self.handle_update(tenant)
+
+ def handle_update(self, tenant):
+
+ if (tenant.link_deleted_count > 0) and (not tenant.provided_links.exists()):
+ # If this instance has no links pointing to it, delete
+ self.handle_delete(tenant)
+ if VOLTServiceInstance.objects.filter(id=tenant.id).exists():
+ tenant.delete()
+ return
+
+ self.manage_vsg(tenant)
+ self.cleanup_orphans(tenant)
+
+ def handle_delete(self, tenant):
+ pass
+ # assume this is handled by ServiceInstanceLink being deleted
+ #if tenant.vcpe:
+ # tenant.vcpe.delete()
+
+ def get_current_vsg(self, tenant):
+ for link in ServiceInstanceLink.objects.filter(subscriber_service_instance_id = tenant.id):
+ # NOTE: Assumes the first (and only?) link is to a vsg
+ # cast from ServiceInstance to VSGTenant
+ return link.provider_service_instance.leaf_model
+ return None
+
+ def create_vsg(self, tenant):
+ vsgServices = VSGService.objects.all()
+ if not vsgServices:
+ raise XOSConfigurationError("No VSG Services available")
+
+ self.logger.info("MODEL_POLICY: VOLTServiceInstance %s creating vsg" % tenant)
+
+ cur_vsg = VSGServiceInstance(owner=vsgServices[0])
+ cur_vsg.creator = tenant.creator
+ cur_vsg.save()
+ link = ServiceInstanceLink(provider_service_instance=cur_vsg, subscriber_service_instance=tenant)
+ link.save()
+
+ def manage_vsg(self, tenant):
+ # Each VOLT object owns exactly one VCPE object
+
+ if tenant.deleted:
+ self.logger.info("MODEL_POLICY: VOLTServiceInstance %s deleted, deleting vsg" % tenant)
+ return
+
+ cur_vsg = self.get_current_vsg(tenant)
+
+ # Check to see if the wrong s-tag is set. This can only happen if the
+ # user changed the s-tag after the VOLTServiceInstance object was created.
+ if cur_vsg and cur_vsg.instance:
+ s_tags = Tag.objects.filter(content_type=cur_vsg.instance.self_content_type_id,
+ object_id=cur_vsg.instance.id, name="s_tag")
+ if s_tags and (s_tags[0].value != str(tenant.s_tag)):
+ self.logger.info("MODEL_POLICY: VOLTServiceInstance %s s_tag changed, deleting vsg" % tenant)
+ cur_vsg.delete()
+ cur_vsg = None
+
+ if cur_vsg is None:
+ self.create_vsg(tenant)
+
+ def cleanup_orphans(self, tenant):
+ # ensure vOLT only has one vCPE
+ cur_vsg = self.get_current_vsg(tenant)
+
+ links = tenant.subscribed_links.all()
+ for link in links:
+ if (link.provider_service_instance_id != cur_vsg.id):
+ link.delete()