blob: 741d4f027ed5a32fc04a8db45368bf5a8f11a566 [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.
from synchronizers.new_base.modelaccessor import *
from synchronizers.new_base.model_policies.model_policy_tenantwithcontainer import Policy
from synchronizers.new_base.exceptions import *
from xosconfig import Config
from multistructlog import create_logger
log = create_logger(Config().get('logging'))
blueprints = Config().get('blueprints')
def service_of_service_instance(si):
if si.endswith('Tenant'):
return si[:-len('Tenant')] + 'Service'
elif si.endswith('ServiceInstance'):
return si[:-len('ServiceInstance')] + 'Service'
else:
raise Exception(
'Could not translate service instance into service: %s' % si)
class VEPCServiceInstancePolicy(Policy):
model_name = "VEPCServiceInstance"
def __init__(self):
self.in_memory_instances = []
self.network_map = {}
super(VEPCServiceInstancePolicy, self).__init__()
"""TODO: Update the following to not be service-specific
This code assumes there is only one vendor installed
"""
def configure_service_instance(self, service_instance):
if service_instance.leaf_model_name == 'VSPGWUTenant':
vendor = VSPGWUVendor.objects.first()
if not vendor:
raise Exception('No VSPGWU vendors')
service_instance.vspgwu_vendor = vendor
service_instance.invalidate_cache('vspgwu_vendor')
elif service_instance.leaf_model_name == 'VSPGWCTenant':
vendor = VSPGWCVendor.objects.first()
if not vendor:
raise Exception('No VSPGWC vendors')
service_instance.vspgwc_vendor = vendor
service_instance.invalidate_cache('vspgwc_vendor')
elif service_instance.leaf_model_name == 'VMMETenant':
vendor = VMMEVendor.objects.first()
if not vendor:
raise Exception('No VMME vendors')
service_instance.vmme_vendor = vendor
service_instance.invalidate_cache('vmme_vendor')
elif service_instance.leaf_model_name == 'VHSSTenant':
vendor = VHSSVendor.objects.first()
if not vendor:
raise Exception('No VHSS vendors')
service_instance.vhss_vendor = vendor
service_instance.invalidate_cache('vhss_vendor')
def child_service_instance_from_name(self, name):
service_instances = self.obj.child_serviceinstances.all()
service_instances.extend(self.in_memory_instances)
try:
service_instance = next(
s for s in service_instances if s.leaf_model_name == name)
except StopIteration:
service_instance = None
return service_instance
def get_service_for_service_instance(self, si):
service = service_of_service_instance(si)
service_class = getattr(Slice().stub, service)
service_obj = service_class.objects.first() # There's only one service object
return service_obj
def create_service_instance(self, si, node_label = None):
service = self.get_service_for_service_instance(si)
if not service:
raise Exception('No service object for %s' % service)
si_class = getattr(Slice().stub, si)
s = si_class(owner=service, name='epc-%s-%d' %
(si.lower(), self.obj.id))
s.master_serviceinstance = self.obj
if node_label:
s.node_label = '%s-%d'%(node_label, self.obj.id)
s.no_sync = True
s.no_policy = True
s.save()
self.configure_service_instance(s)
s.save()
self.in_memory_instances.append(s)
return s
def add_networks_to_service(self, service, networks):
for n in networks:
net = Network.objects.filter(name=n)[0]
one_and_only_slice_hopefully = service.slices.all()[0]
ns_object = NetworkSlice.objects.filter(
network=net.id, slice=one_and_only_slice_hopefully.id)
if not ns_object:
ns_object = NetworkSlice(
network=net, slice=one_and_only_slice_hopefully)
ns_object.save()
def add_networks_to_service_instance(self, instance, networks):
for n in networks:
net = Network.objects.filter(name=n)[0]
one_and_only_slice_hopefully = instance.owner.slices.all()[0]
ns_object = NetworkSlice.objects.filter(
network=net.id, slice=one_and_only_slice_hopefully.id)
if not ns_object:
ns_object = NetworkSlice(
network=net, slice=one_and_only_slice_hopefully)
ns_object.save()
def create_service_instance_with_networks(self, si_name, networks, node_label = None):
service = self.get_service_for_service_instance(si_name)
self.add_networks_to_service(service, networks)
instance = self.child_service_instance_from_name(si_name)
if not instance:
instance = self.create_service_instance(si_name, node_label = node_label)
return instance
def create_link(self, src_instance, dst_instance):
src_service = self.get_service_for_service_instance(
src_instance.leaf_model_name)
dst_service = self.get_service_for_service_instance(
dst_instance.leaf_model_name)
service_dependency = ServiceDependency.objects.filter(
provider_service_id=dst_service.id, subscriber_service_id=src_service.id)
if not service_dependency:
service_dependency = ServiceDependency(
provider_service=dst_service, subscriber_service=src_service)
service_dependency.save()
service_instance_link = ServiceInstanceLink.objects.filter(
provider_service_instance_id=dst_instance.id, subscriber_service_instance_id=src_instance.id)
if not service_instance_link:
service_instance_link = ServiceInstanceLink(
provider_service_instance=dst_instance, subscriber_service_instance=src_instance)
service_instance_link.save()
def recursive_create_instances_and_links(self, blueprint, src, service_instances):
for node in blueprint:
k = node['name']
networks = node.get('networks', [])
links = node.get('links', [])
try:
node_label = node['node_label']
except KeyError:
try:
node_label = next(l['node_label'] for l in links if l.get('node_label', None))
except StopIteration:
node_label = None
instance = self.create_service_instance_with_networks(k, networks, node_label = node_label)
service_instances.append(instance)
if src:
self.add_networks_to_service_instance(src, networks)
self.create_link(src, instance)
service_instances = self.recursive_create_instances_and_links(links, instance, service_instances)
return service_instances
def create_epc_network(self, n):
network_name = n['name']
site_name = self.obj.site.login_base
nets = Network.objects.filter(name=network_name)
if not nets:
template_name = n.get('template', 'public')
try:
template = NetworkTemplate.objects.filter(name=template_name)[0]
except:
raise Exception('Template %s for network %s not found' % (template_name, network_name))
slice_name = '%s_%s' % (site_name, n['owner'])
try:
slice = Slice.objects.filter(name=slice_name)[0]
except:
raise Exception('Owner slice %s for network %s not found' % (slice_name, network_name))
net = Network(name=network_name, subnet=n['subnet'], permit_all_slices=n.get(
'permit_all_slices', False), template=template, owner=slice)
net.save()
else:
net = nets[0]
if net.subnet != n['subnet']:
net.subnet = n['subnet']
net.save()
self.network_map[network_name] = net
def create_networks(self, networks):
for n in networks:
self.create_epc_network(n)
def create_networks_and_child_services(self, service_instance):
self.obj = service_instance
# Create service graph based on blueprint
chosen_blueprint = service_instance.blueprint
try:
blueprint = next(
b for b in blueprints if b['name'] == chosen_blueprint)
except StopIteration:
log.error('Chosen blueprint (%s) not found' % chosen_blueprint)
self.create_networks(blueprint['networks'])
service_instances = self.recursive_create_instances_and_links(blueprint['graph'], None, [])
for si in service_instances:
si.no_policy = False
si.no_sync = False
si.save()
def handle_create(self, service_instance):
self.handle_update(service_instance)
def handle_update(self, service_instance):
self.create_networks_and_child_services(service_instance)