Mark all devices with DHCP enabled as pending when the config is
applied, and mark them as timed out ten seconds later if they have not
received any addresses.
The visible impact of this is that the addresses for a NIC are now
displayed underneath its name and a long "info line" (i.e. mac / model /
vendor) for a nic no longer distorts its table.
This lays the groundwork for better handling of NICs that fail to dhcp
and things like that.
The main thrust of this is to not create virtual interfaces until
applying the config.
This meant that the network model has to change a bit to be able to
represent interfaces that do not yet exist on the system. I did this
by ripping out most of the existing network device code: now a
NetworkDev is really just a wrapper for the config for a device and (if
it exists) the netlink data too. A few places had to adjust to checking
if the netlink info is available before accessing it but all in all it
was not that painful.
There are a few other refactorings in this commit that perhaps should be
split out (how the bond parameters are handled, some stuff about
resizing the table rows when interfaces are edited) but it doesn't
really seem worth it.
One can lookup interfaces by ifindex and by name. Ensure, both
dictionaries use the same NetDev object. This way, when config of
NetDev is updated, it is correctly reflected whichever way the NetDev
is accessed.
When user configures network with subiquity, it's rendered
netplan should be wholly definitive. So, we remove the other files
that may have config. This fixes a bug where running in an instance
when running on a system where cloud-init had rendered a 'match' with
'macaddress'.
When writing netplan we keep 'macaddress' match in place but drop
others. The others may just wildcard from the installer environment,
but macaddress are likely by cloud-init or otherwise intentionally
written.
Also add an atomic write in subiquitycore/file_util and move the
netplan code into subiquitycore/netplan.py, and add some unit test
helpers from cloud-init.
Add and enable pyflakes3 on console_conf, subiquity, subiquitycore and tests.
Replace NOQA markers with __all__ declarations for module imports.
Replace some obvious deadcode that voilates flake8, separate pass for removing
dead code rather than commenting will be handled later.
the only really visible effect of all this is to make --dry-run
--machine-config foo show the network config from foo, not the machine
running subiquity. (The existing configs won't work, though)
Michael Hudson-Doyle