def _UnlockedCommitIp(self, action, net_uuid, address):
"""Commit a reserved IP address to an IP pool.
The IP address is taken from the network's IP pool and marked as reserved.
"""
nobj = self._UnlockedGetNetwork(net_uuid)
pool = AddressPool(nobj)
if action == RESERVE_ACTION:
pool.Reserve(address)
elif action == RELEASE_ACTION:
pool.Release(address)
def _UnlockedReserveIp(self, net_uuid, address, ec_id, check=True):
"""Reserve a given IPv4 address for use by an instance.
"""
nobj = self._UnlockedGetNetwork(net_uuid)
pool = AddressPool(nobj)
try:
isreserved = pool.IsReserved(address)
isextreserved = pool.IsReserved(address, external=True)
except errors.AddressPoolError:
raise errors.ReservationError("IP address not in network")
if isreserved:
raise errors.ReservationError("IP address already in use")
if check and isextreserved:
raise errors.ReservationError("IP is externally reserved")
return self._temporary_ips.Reserve(ec_id,
(RESERVE_ACTION, address, net_uuid))
def CreateNic(self,
uuid=None,
name=None,
mac=None,
ip=None,
network=None,
nicparams=None,
netinfo=None):
"""Create a new L{objecs.NIC} object
@rtype: L{objects.NIC}
@return: the newly create NIC object
"""
nic_id = self._cur_nic_id
self._cur_nic_id += 1
if uuid is None:
uuid = self._GetUuid()
if name is None:
name = "mock_nic_%d" % nic_id
if mac is None:
mac = "aa:00:00:aa:%02x:%02x" % (nic_id / 0xff, nic_id % 0xff)
if isinstance(network, objects.Network):
if ip:
pool = AddressPool(network)
pool.Reserve(ip)
network = network.uuid
if nicparams is None:
nicparams = {}
return objects.NIC(uuid=uuid,
name=name,
mac=mac,
ip=ip,
network=network,
nicparams=nicparams,
netinfo=netinfo)
def GenerateIp(self, net_uuid, ec_id):
"""Find a free IPv4 address for an instance.
"""
nobj = self._UnlockedGetNetwork(net_uuid)
pool = AddressPool(nobj)
def gen_one():
try:
ip = pool.GenerateFree()
except errors.AddressPoolError:
raise errors.ReservationError(
"Cannot generate IP. Network is full")
return (RESERVE_ACTION, ip, net_uuid)
_, address, _ = self._temporary_ips.Generate([], gen_one, ec_id)
return address
