class NetworkController(BaseController):
model_name = "network"
root = "/"
def __init__(self, app):
super().__init__(app)
self.view = None
self.view_shown = False
self.apply_config_task = SingleInstanceTask(self._apply_config)
if self.opts.dry_run:
self.root = os.path.abspath(".subiquity")
netplan_path = self.netplan_path
netplan_dir = os.path.dirname(netplan_path)
if os.path.exists(netplan_dir):
import shutil
shutil.rmtree(netplan_dir)
os.makedirs(netplan_dir)
with open(netplan_path, 'w') as fp:
fp.write(default_netplan)
self.parse_netplan_configs()
self._watching = False
self.network_event_receiver = SubiquityNetworkEventReceiver(self.model)
self.network_event_receiver.add_default_route_watcher(
self.route_watcher)
def parse_netplan_configs(self):
self.model.parse_netplan_configs(self.root)
def route_watcher(self, routes):
if routes:
self.signal.emit_signal('network-change')
def start(self):
self._observer_handles = []
self.observer, self._observer_fds = (
self.app.prober.probe_network(self.network_event_receiver))
self.start_watching()
def stop_watching(self):
if not self._watching:
return
loop = asyncio.get_event_loop()
for fd in self._observer_fds:
loop.remove_reader(fd)
self._watching = False
def start_watching(self):
if self._watching:
return
loop = asyncio.get_event_loop()
for fd in self._observer_fds:
loop.add_reader(fd, self._data_ready, fd)
self._watching = True
def _data_ready(self, fd):
cp = run_command(['udevadm', 'settle', '-t', '0'])
if cp.returncode != 0:
log.debug("waiting 0.1 to let udev event queue settle")
self.stop_watching()
loop = asyncio.get_event_loop()
loop.call_later(0.1, self.start_watching)
return
self.observer.data_ready(fd)
v = self.ui.body
if hasattr(v, 'refresh_model_inputs'):
v.refresh_model_inputs()
def start_scan(self, dev):
self.observer.trigger_scan(dev.ifindex)
def done(self):
log.debug("NetworkController.done next_screen")
self.model.has_network = bool(
self.network_event_receiver.default_routes)
self.app.next_screen()
def cancel(self):
self.app.prev_screen()
def _action_get(self, id):
dev_spec = id[0].split()
dev = None
if dev_spec[0] == "interface":
if dev_spec[1] == "index":
dev = self.model.get_all_netdevs()[int(dev_spec[2])]
elif dev_spec[1] == "name":
dev = self.model.get_netdev_by_name(dev_spec[2])
if dev is None:
raise Exception("could not resolve {}".format(id))
if len(id) > 1:
part, index = id[1].split()
if part == "part":
return dev.partitions()[int(index)]
else:
return dev
raise Exception("could not resolve {}".format(id))
def _action_clean_devices(self, devices):
return [self._action_get(device) for device in devices]
def _answers_action(self, action):
from subiquitycore.ui.stretchy import StretchyOverlay
log.debug("_answers_action %r", action)
if 'obj' in action:
obj = self._action_get(action['obj'])
meth = getattr(
self.ui.body,
"_action_{}".format(action['action']))
action_obj = getattr(NetDevAction, action['action'])
self.ui.body._action(None, (action_obj, meth), obj)
yield
body = self.ui.body._w
if not isinstance(body, StretchyOverlay):
return
for k, v in action.items():
if not k.endswith('data'):
continue
form_name = "form"
submit_key = "submit"
if '-' in k:
prefix = k.split('-')[0]
form_name = prefix + "_form"
submit_key = prefix + "-submit"
yield from self._enter_form_data(
getattr(body.stretchy, form_name),
v,
action.get(submit_key, True))
elif action['action'] == 'create-bond':
self.ui.body._create_bond()
yield
body = self.ui.body._w
yield from self._enter_form_data(
body.stretchy.form,
action['data'],
action.get("submit", True))
elif action['action'] == 'done':
self.ui.body.done()
else:
raise Exception("could not process action {}".format(action))
def update_initial_configs(self):
# Any device that does not have a (global) address by the time
# we get to the network screen is marked as disabled, with an
# explanation.
log.debug("updating initial NIC config")
for dev in self.model.get_all_netdevs():
has_global_address = False
if dev.info is None or not dev.config:
continue
for a in dev.info.addresses.values():
if a.scope == "global":
has_global_address = True
break
if not has_global_address:
dev.remove_ip_networks_for_version(4)
dev.remove_ip_networks_for_version(6)
log.debug("disabling %s", dev.name)
dev.disabled_reason = _("autoconfiguration failed")
def start_ui(self):
if not self.view_shown:
self.update_initial_configs()
self.view = NetworkView(self.model, self)
if not self.view_shown:
self.apply_config(silent=True)
self.view_shown = True
self.network_event_receiver.view = self.view
self.ui.set_body(self.view)
def end_ui(self):
self.view = self.network_event_receiver.view = None
@property
def netplan_path(self):
if self.opts.project == "subiquity":
netplan_config_file_name = '00-installer-config.yaml'
else:
netplan_config_file_name = '00-snapd-config.yaml'
return os.path.join(self.root, 'etc/netplan', netplan_config_file_name)
def apply_config(self, context=None, silent=False):
self.apply_config_task.start_sync(context=context, silent=silent)
async def _down_devs(self, devs):
for dev in devs:
try:
log.debug('downing %s', dev.name)
self.observer.rtlistener.unset_link_flags(dev.ifindex, IFF_UP)
except RuntimeError:
# We don't actually care very much about this
log.exception('unset_link_flags failed for %s', dev.name)
async def _delete_devs(self, devs):
for dev in devs:
# XXX would be nicer to do this via rtlistener eventually.
log.debug('deleting %s', dev.name)
cmd = ['ip', 'link', 'delete', 'dev', dev.name]
try:
await arun_command(cmd, check=True)
except subprocess.CalledProcessError as cp:
log.info("deleting %s failed with %r", dev.name, cp.stderr)
def _write_config(self):
config = self.model.render_config()
log.debug("network config: \n%s",
yaml.dump(sanitize_config(config), default_flow_style=False))
for p in netplan.configs_in_root(self.root, masked=True):
if p == self.netplan_path:
continue
os.rename(p, p + ".dist-" + self.opts.project)
write_file(
self.netplan_path,
self.model.stringify_config(config),
omode="w")
self.parse_netplan_configs()
@with_context(
name="apply_config", description="silent={silent}", level="INFO")
async def _apply_config(self, *, context, silent):
devs_to_delete = []
devs_to_down = []
dhcp_device_versions = []
dhcp_events = set()
for dev in self.model.get_all_netdevs(include_deleted=True):
dev.dhcp_events = {}
for v in 4, 6:
if dev.dhcp_enabled(v):
if not silent:
dev.set_dhcp_state(v, "PENDING")
self.network_event_receiver.update_link(
dev.ifindex)
else:
dev.set_dhcp_state(v, "RECONFIGURE")
dev.dhcp_events[v] = e = asyncio.Event()
dhcp_events.add(e)
if dev.info is None:
continue
if dev.config != self.model.config.config_for_device(dev.info):
if dev.is_virtual:
devs_to_delete.append(dev)
else:
devs_to_down.append(dev)
self._write_config()
if not silent and self.view:
self.view.show_apply_spinner()
try:
def error(stage):
if not silent and self.view:
self.view.show_network_error(stage)
if self.opts.dry_run:
delay = 1/self.app.scale_factor
await arun_command(['sleep', str(delay)])
if os.path.exists('/lib/netplan/generate'):
# If netplan appears to be installed, run generate to
# at least test that what we wrote is acceptable to
# netplan.
await arun_command(
['netplan', 'generate', '--root', self.root],
check=True)
else:
if devs_to_down or devs_to_delete:
try:
await arun_command(
['systemctl', 'mask', '--runtime',
'systemd-networkd.service',
'systemd-networkd.socket'],
check=True)
await arun_command(
['systemctl', 'stop',
'systemd-networkd.service',
'systemd-networkd.socket'],
check=True)
except subprocess.CalledProcessError:
error("stop-networkd")
raise
if devs_to_down:
await self._down_devs(devs_to_down)
if devs_to_delete:
await self._delete_devs(devs_to_delete)
if devs_to_down or devs_to_delete:
await arun_command(
['systemctl', 'unmask', '--runtime',
'systemd-networkd.service',
'systemd-networkd.socket'],
check=True)
try:
await arun_command(['netplan', 'apply'], check=True)
except subprocess.CalledProcessError:
error("apply")
raise
if devs_to_down or devs_to_delete:
# It's probably running already, but just in case.
await arun_command(
['systemctl', 'start', 'systemd-networkd.socket'],
check=False)
finally:
if not silent and self.view:
self.view.hide_apply_spinner()
if self.answers.get('accept-default', False):
self.done()
elif self.answers.get('actions', False):
actions = self.answers['actions']
self.answers.clear()
self._run_iterator(self._run_actions(actions))
if not dhcp_events:
return
try:
await asyncio.wait_for(
asyncio.wait({e.wait() for e in dhcp_events}),
10)
except asyncio.TimeoutError:
pass
for dev, v in dhcp_device_versions:
dev.dhcp_events = {}
if not dev.dhcp_addresses()[v]:
dev.set_dhcp_state(v, "TIMEDOUT")
self.network_event_receiver.update_link(dev.ifindex)
def add_vlan(self, device, vlan):
return self.model.new_vlan(device, vlan)
def add_or_update_bond(self, existing, result):
mode = result['mode']
params = {
'mode': mode,
}
if mode in BondParameters.supports_xmit_hash_policy:
params['transmit-hash-policy'] = result['xmit_hash_policy']
if mode in BondParameters.supports_lacp_rate:
params['lacp-rate'] = result['lacp_rate']
for device in result['devices']:
device.config = {}
interfaces = [d.name for d in result['devices']]
if existing is None:
return self.model.new_bond(result['name'], interfaces, params)
else:
existing.config['interfaces'] = interfaces
existing.config['parameters'] = params
existing.name = result['name']
return existing
class NetworkController(BaseNetworkController, TuiController,
NetworkAnswersMixin):
def __init__(self, app):
super().__init__(app)
self.view = None
self.view_shown = False
def make_ui(self):
if not self.view_shown:
self.update_initial_configs()
netdev_infos = [
dev.netdev_info() for dev in self.model.get_all_netdevs()
]
self.view = NetworkView(self, netdev_infos)
if not self.view_shown:
self.apply_config(silent=True)
self.view_shown = True
self.view.update_default_routes(
self.network_event_receiver.default_routes)
return self.view
def end_ui(self):
self.view = None
def done(self):
log.debug("NetworkController.done next_screen")
self.model.has_network = bool(
self.network_event_receiver.default_routes)
self.app.next_screen()
def cancel(self):
self.app.prev_screen()
def apply_starting(self):
super().apply_starting()
if self.view is not None:
self.view.show_apply_spinner()
def apply_stopping(self):
super().apply_stopping()
if self.view is not None:
self.view.hide_apply_spinner()
def apply_error(self, stage):
super().apply_error(stage)
if self.view is not None:
self.view.show_network_error(stage)
def update_default_routes(self, routes):
super().update_default_routes(routes)
if self.view:
self.view.update_default_routes(routes)
def new_link(self, netdev):
super().new_link(netdev)
if self.view is not None:
self.view.new_link(netdev.netdev_info())
def update_link(self, netdev):
super().update_link(netdev)
if self.view is not None:
self.view.update_link(netdev.netdev_info())
def del_link(self, netdev):
super().del_link(netdev)
if self.view is not None:
self.view.del_link(netdev.netdev_info())