- Original Message -
From: Thomas Haller thal...@redhat.com
To: Petr Horacek phora...@redhat.com
Cc: Yegor Yefremov yegorsli...@googlemail.com, networkmanager.
networkmanager-list@gnome.org
Sent: Tuesday, March 3, 2015 4:42:59 PM
Subject: Re: D-bus create device, tutorials, resources
On Tue, 2015-03-03 at 06:28 -0500, Petr Horacek wrote:
- Original Message -
From: Thomas Haller thal...@redhat.com
To: Yegor Yefremov yegorsli...@googlemail.com
Cc: Petr Horacek phora...@redhat.com, networkmanager.
networkmanager-list@gnome.org
Sent: Tuesday, March 3, 2015 12:03:43 PM
Subject: Re: D-bus create device, tutorials, resources
On Tue, 2015-03-03 at 10:28 +0100, Yegor Yefremov wrote:
On Tue, Mar 3, 2015 at 10:03 AM, Petr Horacek phora...@redhat.com
wrote:
Hello folks,
I'm new to NetworkManager, getting familiar with D-bus interface etc.
I'd like to create a high level Python interface for nm, but I have
trouble
with insufficient documentation resources (or my Google skills).
Is there any tutorial or D-bus code example for e.g. creating a bond
device
with defined IP? I've found plenty of 'list devices' but nothing like
this.
What's wrong with this project
https://github.com/seveas/python-networkmanager ?
(Copying from another response:)
I know this lib, problem is, that you still have to handle NetworkManager
with
some strings, dictionaries etc. I would like to do it more Pythonic way,
like:
add_bond(name, slaves), or even better with some context managers and
stuff.
See also,
http://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/dbus
which are examples for using Python to access the D-Bus interface
directly.
then there is also
http://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/gi
which uses libnm via gobject introspection. If you want something quick,
this might be better. If you want to implement the best possible python
NM library, you might don't want to use it.
Note that libnm will always be installed together with NetworkManager,
so the additional dependency is not that cumbersome.
But libnm was only introduced with nm-1-0, so if you want to support
older NM (too), you must use the now deprecated libnm-utils library.
http://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/gi?h=nm-0-9-10
The deprecated library libnm-utils also works with NM 1.0 and newer, but
it is... deprecated.
The D-Bus API for NM is quite stable, so if you are using D-Bus
directly, you should easily be able to support various version of
NetworkManager.
I didn't look at python-networkmanager, but that might be worth using
(and improving) instead of adding yet another wrapper.
Thomas
I would love to use D-Bus API, but I don't know what strings should I use
for for
example adding bond and stuff like that. Thanks for links, but I think, i
read them all.
NetworkManager is all about connections (i.e. profiles, which basically
are a bunch of key-value dictionaries).
see:
http://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/dbus/add-connection.py
To create a bond setting, populate the dictionary accordingly, most
notably with a different connection.type='bond' entry.
To know which properties are supported, see `man nm-settings`.
Look also what nmcli does, i.e. create a connection there, and see how
it turns out. You can do that for example using d-feet and looking at
the (D-Bus) GetSettings() method.
For example
$ $ nmcli connection add type bond
afterwards, GetSettings() returns:
{'bond': {'interface-name': 'nm-bond', 'options': {'mode': 'balance-rr'}},
'connection': {'id': 'bond',
'interface-name': 'nm-bond',
'permissions': [],
'secondaries': [],
'type': 'bond',
'uuid': '38ac844a-670d-4efe-b9a0-a2b53b1abaee'},
'ipv4': {'address-data': [],
'addresses': [],
'dns': [],
'dns-search': [],
'method': 'auto',
'route-data': [],
'routes': []},
'ipv6': {'address-data': [],
'addresses': [],
'dns': [],
'dns-search': [],
'method': 'auto',
'route-data': [],
'routes': []}}
The 'bond' dictionary is special, because it contains yet another
dictionary 'options', so you would have to know which options are
supported.
Improving python-networkmanager could be fine, but i would like to do more
higher interface, as I mentioned in response to Yegor. Something like
Python nmcli.
sure!
good luck
Thomas
Thanks a lot! This is really helpful, everything I was looking for :)
Best regards,
Petr
