def __init__(self, spec, location, name, number_subnets):
super(AzureVirtualNetwork, self).__init__(spec)
self.name = name
self.resource_group = GetResourceGroup()
self.location = location
self.args = ['--vnet-name', self.name]
self.address_index = 0
self.regional_index = AzureVirtualNetwork._regional_network_count
self.address_spaces = []
for zone_num in range(number_subnets):
self.address_spaces.append(
network.GetCidrBlock(self.regional_index, zone_num))
self.is_created = False
def __init__(self, region, vpc_id=None, regional_network_index=0):
super(AwsVpc, self).__init__(vpc_id is not None)
self.region = region
self.regional_network_index = regional_network_index
self.cidr = network.GetCidrBlock(self.regional_network_index, 0, 16)
self.id = vpc_id
# Subnets are assigned per-AZ.
# _subnet_index tracks the next unused 10.x.y.0/24 block.
self._subnet_index = 0
# Lock protecting _subnet_index
self._subnet_index_lock = threading.Lock()
self.default_security_group_id = None
if self.id:
self._SetSecurityGroupId()
self._endpoints = [
aws_vpc_endpoint.CreateEndpointService(service, self)
for service in set(FLAGS.aws_endpoint)
]
def NextSubnetCidrBlock(self):
"""Returns the next available /24 CIDR block in this VPC.
Each VPC has a 10.0.0.0/16 CIDR block.
Each subnet is assigned a /24 within this allocation.
Calls to this method return the next unused /24.
Returns:
A string representing the next available /24 block, in CIDR notation.
Raises:
ValueError: when no additional subnets can be created.
"""
with self._subnet_index_lock:
if self._subnet_index >= (1 << 8) - 1:
raise ValueError('Exceeded subnet limit ({0}).'.format(
self._subnet_index))
cidr = network.GetCidrBlock(self.regional_network_index,
self._subnet_index)
self._subnet_index += 1
return cidr
def __init__(self, region, vpc_id=None):
self.region = region
self.internet_gateway = AwsInternetGateway(region, vpc_id)
self.route_table = None
self.created = False
# Locks to ensure that a single thread creates / deletes the instance.
self._create_lock = threading.Lock()
# Tracks the number of AwsNetworks using this _AwsRegionalNetwork.
# Incremented by Create(); decremented by Delete();
# When a Delete() call decrements _reference_count to 0, the RegionalNetwork
# is destroyed.
self._reference_count = 0
self._reference_count_lock = threading.Lock()
# Each regional network needs unique cidr_block for VPC peering.
with _AwsRegionalNetwork._regional_network_lock:
self.vpc = AwsVpc(self.region, vpc_id,
_AwsRegionalNetwork._regional_network_count)
self.cidr_block = network.GetCidrBlock(
_AwsRegionalNetwork._regional_network_count)
_AwsRegionalNetwork._regional_network_count += 1
