def verify_tunnel_range(tunnel_range, tunnel_type):
"""Verify a given tunnel range is valid given it's tunnel type.
Existing validation is done for GRE, VXLAN and GENEVE types as per
_TUNNEL_MAPPINGS.
:param tunnel_range: An iterable who's 0 index is the min tunnel range
and who's 1 index is the max tunnel range.
:param tunnel_type: The tunnel type of the range.
:returns: None if the tunnel_range is valid.
:raises: NetworkTunnelRangeError if tunnel_range is invalid.
"""
if tunnel_type in _TUNNEL_MAPPINGS:
for ident in tunnel_range:
if not _TUNNEL_MAPPINGS[tunnel_type](ident):
raise exceptions.NetworkTunnelRangeError(
tunnel_range=tunnel_range,
error=_("%(id)s is not a valid %(type)s identifier") % {
'id': ident,
'type': tunnel_type
})
if tunnel_range[1] < tunnel_range[0]:
raise exceptions.NetworkTunnelRangeError(
tunnel_range=tunnel_range,
error=_("End of tunnel range is less "
"than start of tunnel range"))
def _parse_nexus_vni_range(self, tunnel_range):
"""Raise an exception for invalid tunnel range or malformed range."""
for ident in tunnel_range:
if not self._is_valid_nexus_vni(ident):
raise exc.NetworkTunnelRangeError(
tunnel_range=tunnel_range,
error=_("%(id)s is not a valid Nexus VNI value.") %
{'id': ident})
if tunnel_range[1] < tunnel_range[0]:
raise exc.NetworkTunnelRangeError(
tunnel_range=tunnel_range,
error=_("End of tunnel range is less than start of "
"tunnel range."))
def verify_tunnel_range(tunnel_range, tunnel_type):
"""Raise an exception for invalid tunnel range or malformed range."""
mappings = {p_const.TYPE_GRE: is_valid_gre_id,
p_const.TYPE_VXLAN: is_valid_vxlan_vni,
p_const.TYPE_GENEVE: is_valid_geneve_vni}
if tunnel_type in mappings:
for ident in tunnel_range:
if not mappings[tunnel_type](ident):
raise exceptions.NetworkTunnelRangeError(
tunnel_range=tunnel_range,
error=_("%(id)s is not a valid %(type)s identifier") %
{'id': ident, 'type': tunnel_type})
if tunnel_range[1] < tunnel_range[0]:
raise exceptions.NetworkTunnelRangeError(
tunnel_range=tunnel_range,
error=_("End of tunnel range is less "
"than start of tunnel range"))
def parse_l3_vni_ranges(self, l3_vxlan_ranges_cfg_entries):
"""Interpret a list of strings as vxlan_begin:vxlan_end entries."""
l3_vxlan_ranges = []
for entry in l3_vxlan_ranges_cfg_entries:
entry = entry.strip()
try:
vni_min, vni_max = entry.split(':')
vni_min = vni_min.strip()
vni_max = vni_max.strip()
vni_range = int(vni_min), int(vni_max)
except ValueError as ex:
raise exc.NetworkTunnelRangeError(tunnel_range=entry, error=ex)
l3_vxlan_ranges.append(vni_range)
return l3_vxlan_ranges
def _parse_tunnel_ranges(self, tunnel_ranges, current_range):
for entry in tunnel_ranges:
entry = entry.strip()
try:
tun_min, tun_max = entry.split(':')
tun_min = tun_min.strip()
tun_max = tun_max.strip()
tunnel_range = int(tun_min), int(tun_max)
except ValueError as ex:
raise exc.NetworkTunnelRangeError(tunnel_range=entry, error=ex)
plugin_utils.verify_tunnel_range(tunnel_range, self.get_type())
current_range.append(tunnel_range)
LOG.info(_LI("%(type)s ID ranges: %(range)s"),
{'type': self.get_type(), 'range': current_range})
def _parse_nexus_vni_ranges(self, tunnel_ranges, current_range):
for entry in tunnel_ranges:
entry = entry.strip()
try:
tun_min, tun_max = entry.split(':')
tun_min = tun_min.strip()
tun_max = tun_max.strip()
tunnel_range = int(tun_min), int(tun_max)
except ValueError as ex:
raise exc.NetworkTunnelRangeError(tunnel_range=entry, error=ex)
self._parse_nexus_vni_range(tunnel_range)
current_range.append(tunnel_range)
LOG.info("Nexus VXLAN ID ranges: %(range)s", {'range': current_range})
