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# 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 os
import base64
import struct
import socket
from netaddr import IPAddress, IPNetwork
from synchronizers.openstack.openstacksyncstep import OpenStackSyncStep
from synchronizers.new_base.syncstep import *
from xos.logger import observer_logger as logger
from synchronizers.new_base.ansible_helper import *
from synchronizers.new_base.modelaccessor import *
class SyncControllerNetworks(OpenStackSyncStep):
requested_interval = 0
provides=[Network]
observes=ControllerNetwork
playbook='sync_controller_networks.yaml'
def alloc_subnet(self, uuid):
# 16 bits only
uuid_masked = uuid & 0xffff
a = 10
b = uuid_masked >> 8
c = uuid_masked & 0xff
d = 0
cidr = '%d.%d.%d.%d/24'%(a,b,c,d)
return cidr
def alloc_gateway(self, subnet):
# given a CIDR, allocate a default gateway using the .1 address within
# the subnet.
# 10.123.0.0/24 --> 10.123.0.1
# 207.141.192.128/28 --> 207.141.192.129
(network, bits) = subnet.split("/")
network=network.strip()
bits=int(bits.strip())
netmask = (~(pow(2,32-bits)-1) & 0xFFFFFFFF)
ip = struct.unpack("!L", socket.inet_aton(network))[0]
ip = ip & netmask | 1
return socket.inet_ntoa(struct.pack("!L", ip))
def get_segmentation_id(self, controller_network):
driver = self.driver.admin_driver(controller = controller_network.controller)
neutron_network = driver.shell.neutron.list_networks(controller_network.network_id)["networks"][0]
if "provider:segmentation_id" in neutron_network:
return neutron_network["provider:segmentation_id"]
else:
return None
def save_controller_network(self, controller_network):
network_name = controller_network.network.name
subnet_name = '%s-%d'%(network_name,controller_network.pk)
if controller_network.subnet and controller_network.subnet.strip():
# If a subnet is already specified (pass in by the creator), then
# use that rather than auto-generating one.
cidr = controller_network.subnet.strip()
print "CIDR_MS", cidr
else:
cidr = self.alloc_subnet(controller_network.pk)
print "CIDR_AMS", cidr
if controller_network.network.start_ip and controller_network.network.start_ip.strip():
start_ip = controller_network.network.start_ip.strip()
else:
start_ip = None
if controller_network.network.end_ip and controller_network.network.end_ip.strip():
end_ip = controller_network.network.end_ip.strip()
else:
end_ip = None
slice = controller_network.network.owner
controller_network.subnet = cidr
controller_network.gateway = self.alloc_gateway(cidr)
network_fields = {'endpoint':controller_network.controller.auth_url,
'endpoint_v3': controller_network.controller.auth_url_v3,
'admin_user':slice.creator.email,
'admin_password':slice.creator.remote_password,
'admin_project':slice.name,
'domain': controller_network.controller.domain,
'name':network_name,
'subnet_name':subnet_name,
'ansible_tag':'%s-%s@%s'%(network_name,slice.slicename,controller_network.controller.name),
'cidr':cidr,
'gateway': controller_network.gateway,
'start_ip':start_ip,
'end_ip':end_ip,
'use_vtn':True,
'delete':False
}
return network_fields
def map_sync_outputs(self, controller_network,res):
network_id = res[0]['network']['id']
subnet_id = res[1]['subnet']['id']
controller_network.net_id = network_id
controller_network.subnet_id = subnet_id
controller_network.backend_status = 'OK'
controller_network.backend_code = 1
if not controller_network.segmentation_id:
controller_network.segmentation_id = str(self.get_segmentation_id(controller_network))
controller_network.save()
def map_sync_inputs(self, controller_network):
# make sure to not sync a shared network
if (controller_network.network.template.shared_network_name or controller_network.network.template.shared_network_id):
return SyncStep.SYNC_WITHOUT_RUNNING
if not controller_network.controller.admin_user:
logger.info("controller %r has no admin_user, skipping" % controller_network.controller)
return
if controller_network.network.owner and controller_network.network.owner.creator:
return self.save_controller_network(controller_network)
else:
raise Exception('Could not save network controller %s'%controller_network)
def map_delete_inputs(self, controller_network):
# make sure to not delete a shared network
if (controller_network.network.template.shared_network_name or controller_network.network.template.shared_network_id):
return
try:
slice = controller_network.network.owner # XXX: FIXME!!
except:
raise Exception('Could not get slice for Network %s'%controller_network.network.name)
network_name = controller_network.network.name
subnet_name = '%s-%d'%(network_name,controller_network.pk)
cidr = controller_network.subnet
network_fields = {'endpoint':controller_network.controller.auth_url,
'endpoint_v3': controller_network.controller.auth_url_v3,
'domain': controller_network.controller.domain,
'admin_user':slice.creator.email, # XXX: FIXME
'admin_project':slice.name, # XXX: FIXME
'admin_password':slice.creator.remote_password,
'name':network_name,
'subnet_name':subnet_name,
'ansible_tag':'%s-%s@%s'%(network_name,slice.slicename,controller_network.controller.name),
'cidr':cidr,
'delete':True
}
return network_fields