def _check_ip_matches_version(item, version):
if isinstance(item, list):
for i in item:
SubnetMixin._check_ip_matches_version(i, version)
return
if netaddr.IPNetwork(item).version != version:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet',
msg='Invalid IP address version')
def _check_ip_matches_version(item, version):
if isinstance(item, list):
for i in item:
SubnetMixin._check_ip_matches_version(i, version)
return
if netaddr.IPNetwork(item).version != version:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet',
msg='Invalid IP address version')
def _subnet_neutron_to_vnc(subnet_q):
if not subnet_q.get('cidr'):
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', msg='cidr is empty', resource='subnet')
cidr = netaddr.IPNetwork(subnet_q['cidr'])
pfx = str(cidr.network)
pfx_len = int(cidr.prefixlen)
if pfx_len == 0 and cidr.version == 4:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet', msg="Invalid prefix len")
if cidr.version != 4 and cidr.version != 6:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet', msg='Unknown IP family')
elif cidr.version != int(subnet_q['ip_version']):
msg = ("cidr '%s' does not match the ip_version '%s'" %
(subnet_q['cidr'], subnet_q['ip_version']))
ContrailResourceHandler._raise_contrail_exception(
'InvalidInput', error_message=msg, resource='subnet')
if 'gateway_ip' in subnet_q:
default_gw = subnet_q['gateway_ip']
gw_ip_obj = netaddr.IPAddress(default_gw)
if default_gw != '0.0.0.0':
if gw_ip_obj not in cidr or gw_ip_obj.words[-1] == 255 or (
gw_ip_obj.words[-1] == 0):
ContrailResourceHandler._raise_contrail_exception(
'BadRequest',
resource='subnet',
msg="Invalid Gateway ip address")
else:
# Assigned first+1 from cidr
default_gw = str(netaddr.IPAddress(cidr.first + 1))
if cidr.version == 4 and 'ipv6_address_mode' in subnet_q:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest',
resource='subnet',
msg="Invalid address mode with version")
if 'allocation_pools' in subnet_q:
alloc_pools = subnet_q['allocation_pools']
alloc_cidrs = []
for pool in alloc_pools:
try:
ip_start = netaddr.IPAddress(pool['start'])
ip_end = netaddr.IPAddress(pool['end'])
except netaddr.core.AddrFormatError:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest',
resource='subnet',
msg="Invalid IP address in allocation pool")
if ip_start >= ip_end:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest',
resource='subnet',
msg='Invalid address in allocation pool')
if ip_start not in cidr or ip_end not in cidr:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest',
resource='subnet',
msg="Pool addresses not in subnet range")
# Check if the pool overlaps with other pools
for rng in alloc_cidrs:
if rng['start'] <= ip_start and ip_end <= rng['end']:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest',
resource='subnet',
msg='Pool addresses invalid')
elif (rng['start'] >= ip_start and
(rng['start'] <= ip_end)) or (
rng['end'] >= ip_start and
(rng['end'] <= ip_end)):
ContrailResourceHandler._raise_contrail_exception(
'OverlappingAllocationPools',
pool_2="%s-%s" % (ip_start, ip_end),
pool_1="%s-%s" % (rng['start'], rng['end']),
subnet_cidr=str(cidr))
alloc_cidrs.append({'start': ip_start, 'end': ip_end})
gw_ip_obj = netaddr.IPAddress(default_gw)
for rng in alloc_cidrs:
st = rng['start']
end = rng['end']
if st <= gw_ip_obj and end >= gw_ip_obj:
ContrailResourceHandler._raise_contrail_exception(
'GatewayConflictWithAllocationPools',
ip_address=default_gw,
pool=str(cidr),
msg='Gw ip is part of allocation pools')
else:
# Assigned by address manager
alloc_pools = None
dhcp_option_list = None
if 'dns_nameservers' in subnet_q and subnet_q['dns_nameservers']:
dhcp_options = []
dns_servers = " ".join(subnet_q['dns_nameservers'])
if dns_servers:
dhcp_options.append(
vnc_api.DhcpOptionType(dhcp_option_name='6',
dhcp_option_value=dns_servers))
if dhcp_options:
dhcp_option_list = vnc_api.DhcpOptionsListType(dhcp_options)
host_route_list = None
if 'host_routes' in subnet_q and subnet_q['host_routes']:
host_routes = []
for host_route in subnet_q['host_routes']:
SubnetMixin._check_ip_matches_version(
[host_route['destination'], host_route['nexthop']],
cidr.version)
host_routes.append(
vnc_api.RouteType(prefix=host_route['destination'],
next_hop=host_route['nexthop']))
if host_routes:
host_route_list = vnc_api.RouteTableType(host_routes)
if 'enable_dhcp' in subnet_q:
dhcp_config = subnet_q['enable_dhcp']
else:
dhcp_config = None
sn_name = subnet_q.get('name')
subnet_vnc = vnc_api.IpamSubnetType(subnet=vnc_api.SubnetType(
pfx, pfx_len),
default_gateway=default_gw,
enable_dhcp=dhcp_config,
dns_nameservers=None,
allocation_pools=alloc_pools,
addr_from_start=True,
dhcp_option_list=dhcp_option_list,
host_routes=host_route_list,
subnet_name=sn_name,
subnet_uuid=str(uuid.uuid4()))
return subnet_vnc
def _subnet_neutron_to_vnc(subnet_q):
if not subnet_q.get('cidr'):
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', msg='cidr is empty',
resource='subnet')
cidr = netaddr.IPNetwork(subnet_q['cidr'])
pfx = str(cidr.network)
pfx_len = int(cidr.prefixlen)
if pfx_len == 0 and cidr.version == 4:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest',
resource='subnet', msg="Invalid prefix len")
if cidr.version != 4 and cidr.version != 6:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest',
resource='subnet', msg='Unknown IP family')
elif cidr.version != int(subnet_q['ip_version']):
msg = ("cidr '%s' does not match the ip_version '%s'"
% (subnet_q['cidr'], subnet_q['ip_version']))
ContrailResourceHandler._raise_contrail_exception(
'InvalidInput', error_message=msg, resource='subnet')
if 'gateway_ip' in subnet_q:
default_gw = subnet_q['gateway_ip']
gw_ip_obj = netaddr.IPAddress(default_gw)
if default_gw != '0.0.0.0':
if gw_ip_obj not in cidr or gw_ip_obj.words[-1] == 255 or (
gw_ip_obj.words[-1] == 0):
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet',
msg="Invalid Gateway ip address")
else:
# Assigned first+1 from cidr
default_gw = str(netaddr.IPAddress(cidr.first + 1))
if cidr.version == 4 and 'ipv6_address_mode' in subnet_q:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet',
msg="Invalid address mode with version")
if 'allocation_pools' in subnet_q:
alloc_pools = subnet_q['allocation_pools']
alloc_cidrs = []
for pool in alloc_pools:
try:
ip_start = netaddr.IPAddress(pool['start'])
ip_end = netaddr.IPAddress(pool['end'])
except netaddr.core.AddrFormatError:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet',
msg="Invalid IP address in allocation pool")
if ip_start >= ip_end:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet',
msg='Invalid address in allocation pool')
if ip_start not in cidr or ip_end not in cidr:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet',
msg="Pool addresses not in subnet range")
# Check if the pool overlaps with other pools
for rng in alloc_cidrs:
if rng['start'] <= ip_start and ip_end <= rng['end']:
ContrailResourceHandler._raise_contrail_exception(
'BadRequest', resource='subnet',
msg='Pool addresses invalid')
elif (rng['start'] >= ip_start and (
rng['start'] <= ip_end)) or (
rng['end'] >= ip_start and (
rng['end'] <= ip_end)):
ContrailResourceHandler._raise_contrail_exception(
'OverlappingAllocationPools',
pool_2="%s-%s" % (ip_start, ip_end),
pool_1="%s-%s" % (rng['start'], rng['end']),
subnet_cidr=str(cidr))
alloc_cidrs.append({'start': ip_start, 'end': ip_end})
gw_ip_obj = netaddr.IPAddress(default_gw)
for rng in alloc_cidrs:
st = rng['start']
end = rng['end']
if st <= gw_ip_obj and end >= gw_ip_obj:
ContrailResourceHandler._raise_contrail_exception(
'GatewayConflictWithAllocationPools',
ip_address=default_gw,
pool=str(cidr),
msg='Gw ip is part of allocation pools')
else:
# Assigned by address manager
alloc_pools = None
dhcp_option_list = None
if 'dns_nameservers' in subnet_q and subnet_q['dns_nameservers']:
dhcp_options = []
dns_servers = " ".join(subnet_q['dns_nameservers'])
if dns_servers:
dhcp_options.append(vnc_api.DhcpOptionType(
dhcp_option_name='6', dhcp_option_value=dns_servers))
if dhcp_options:
dhcp_option_list = vnc_api.DhcpOptionsListType(dhcp_options)
host_route_list = None
if 'host_routes' in subnet_q and subnet_q['host_routes']:
host_routes = []
for host_route in subnet_q['host_routes']:
SubnetMixin._check_ip_matches_version(
[host_route['destination'], host_route['nexthop']],
cidr.version)
host_routes.append(vnc_api.RouteType(
prefix=host_route['destination'],
next_hop=host_route['nexthop']))
if host_routes:
host_route_list = vnc_api.RouteTableType(host_routes)
if 'enable_dhcp' in subnet_q:
dhcp_config = subnet_q['enable_dhcp']
else:
dhcp_config = None
sn_name = subnet_q.get('name')
subnet_vnc = vnc_api.IpamSubnetType(
subnet=vnc_api.SubnetType(pfx, pfx_len),
default_gateway=default_gw,
enable_dhcp=dhcp_config,
dns_nameservers=None,
allocation_pools=alloc_pools,
addr_from_start=True,
dhcp_option_list=dhcp_option_list,
host_routes=host_route_list,
subnet_name=sn_name,
subnet_uuid=str(uuid.uuid4()))
return subnet_vnc