def configure(self):
ns_name = self.context.make_network_namespace_name()
name = self.make_name()
left, right = name
ip = self.get_ipdb()
klass = type(self)
self.iface_set_up(left)
try:
with ip.interfaces[right] as iface:
iface.net_ns_fd = ns_name
except OSError as e:
raise exc.SystemResourceError(klass, name) from e
except KeyError:
# perhaps someone already move iface into our NS
pass
nsip = self.context.shared_registry.fetch(NetworkNamespace)
iface_index = self.ns_gw_name
try:
with nsip.interfaces[right] as iface:
iface_index = iface.index
iface.ifname = self.ns_gw_name
iface.up()
except OSError as e:
raise exc.SystemResourceError(klass, name) from e
except KeyError:
# perhaps someone already rename iface, check it
try:
with ip.interfaces[left].ro as iface_left:
with nsip.interfaces[self.ns_gw_name].ro as iface_right:
ok = iface_left['kind'] == iface_right['kind'] == 'veth'
ok = ok and iface_left['peer'] == right
if not ok:
raise exc.SystemResourceDamagedError(
klass, name,
'is not a veth pair created in previous '
'step')
except KeyError as e:
raise exc.SystemResourceNotFoundError(klass, str(e))
self.context.shared_registry.add(klass,
GWDescriptor(left, self.ns_gw_name))
self.context.shared_registry.add(GatewayIfaceDescriptor,
GatewayIfaceDescriptor(iface_index))
def release(self):
super().release()
name = self.context.make_network_namespace_name()
try:
pyroute2.netns.remove(name)
except OSError as e:
raise exc.SystemResourceError(type(self), name) from e
def iface_set_up(self, name):
klass = type(self)
try:
with self.get_ipdb().interfaces[name] as iface:
iface.up()
except OSError as e:
raise exc.SystemResourceError(klass, name) from e
except KeyError:
raise exc.SystemResourceNotFoundError(klass, name)
def create(self):
name = self.context.make_network_namespace_name()
klass = type(self)
try:
pyroute2.netns.create(name)
except OSError as e:
if e.errno == errno.EEXIST:
raise exc.SystemResourceExistsError(klass, name)
raise exc.SystemResourceError(klass, name) from e
def iface_drop_all_addresses(self, name):
klass = type(self)
try:
with self.get_ipdb().interfaces[name] as iface:
for addr in tuple(iface.ipaddr):
iface.del_ip(*addr)
except OSError as e:
raise exc.SystemResourceError(klass, name) from e
except KeyError:
raise exc.SystemResourceNotFoundError(klass, self.context.iface)
def configure(self):
name = self.context.make_bridge_name()
klass = type(self)
try:
self._make_bridge_ifadd(name)
self._make_bridge_setup(name)
except OSError as e:
raise exc.SystemResourceError(klass, name) from e
except KeyError:
raise exc.SystemResourceDamagedError(klass, name,
'interface not found')
def create(self):
name = self.context.make_network_namespace_name()
klass = type(self)
try:
pyroute2.netns.create(name)
except OSError as e:
if e.errno == errno.EEXIST:
raise exc.SystemResourceExistsError(klass, name)
raise exc.SystemResourceError(klass, name) from e
self._sysctl(name, 'net.ipv6.conf.default.disable_ipv6', 1)
def create(self):
name = self.make_name()
left, right = name
klass = type(self)
try:
with self.get_ipdb().create(kind='veth', ifname=left, peer=right):
# don't do any extra configuration here
pass
except pyroute2.CreateException:
raise exc.SystemResourceExistsError(klass, name)
except Exception as e:
raise exc.SystemResourceError(klass, name) from e
def configure(self):
veth = self.context.shared_registry.fetch(VEthPair)
veth_index = self.iface_get_info(veth.root).index
try:
with self.get_ipdb().interfaces[self.context.iface.index] as iface:
iface.add_port(veth_index)
except OSError as e:
raise exc.SystemResourceError(type(self), veth.root) from e
except KeyError:
raise exc.SystemResourceDamagedError(type(self),
self.context.iface.name,
'interface not found')
def configure(self):
name = self.context.make_bridge_name()
veth = self.context.shared_registry.fetch(VEthPair)
need_ports = {
self.context.iface.index,
self.iface_get_info(veth.root).index
}
klass = type(self)
try:
with self.get_ipdb().interfaces[name] as iface:
iface.up()
ports = set(iface.ports)
for port in ports - need_ports:
iface.del_port(port)
for port in need_ports - ports:
iface.add_port(port)
except OSError as e:
raise exc.SystemResourceError(klass, name) from e
except KeyError:
raise exc.SystemResourceDamagedError(klass, name,
'interface not found')
