Re: org.freedesktop.NetworkManager.Settings.PropertiesChanged deprecated

[Andrei Borzenkov <arvidjaar gmail com>]

On 14.07.2021 19:58, mh mike franken de wrote:
> Hi,
>
> On Mittwoch, 14. Juli 2021 16:52:53 CEST Andrei Borzenkov via networkmanager-
> list wrote:
> [...]
> > > Probably there is a fundamental misunderstanding regaring the concept on
> > > my
> > > side.
> >
> > You have object which has properties. When properties change, you get
> > signal *from this object*. If you want to monitor for connectivity
> > changes, you need to monitor active connection.
> >
> > The examples/python/dbus/create-bond.py in NM source tree does precisely
> > that - it monitors for connectivity changes on current connection.
>
> yes, but because I also need to monitor VPN changes, I have to monitor /o/f/
> NM.

In your original mail you only said "monitor connectivity" so anything
is just guesswork.

> > If you want to monitor overall connectivity, you need to monitor main
> > /o/f/NM object.
>
> This is, what I did before NetworkManager's PropertiesChanged signal got 
> deprecated.
> My problem is to understand, what path and what interface I have to use in 
> this part of my code, after the PropertiesChanged signal moved from 
> NetworkManager to DBus:
>
> my $busobjpath = "org.freedesktop.NetworkManager";
> my $busif = "org.freedesktop.DBus.Properties";
> my $oBUSIF = $oBUSSVC->get_object( $busobjpath, $busif ) || die $!;
> $oBUSIF->connect_to_signal(
>   "PropertiesChanged", sub {
>     &{ \&onPropertiesChanged }( @_ )
>   } || die $!;
> }

I do not see any reference to object here so I have no idea what this
code does. The following certainly works

def properties_changed(interface_name, changed_properties,
invalidated_properties):
    print (interface_name, changed_properties, invalidated_properties)


bus = dbus.SystemBus()
obj = bus.get_object("org.freedesktop.NetworkManager",
"/org/freedesktop/NetworkManager")
iface = dbus.Interface(obj, "org.freedesktop.DBus.Properties")
iface.connect_to_signal("PropertiesChanged", properties_changed)


> The original code now tells me
>
> no signal PropertiesChanged in interface org.freedesktop.NetworkManager at /
> usr/lib/perl5/vendor_perl/5.32.1/x86_64-linux-thread-multi/Net/DBus/Binding/
> Introspector.pm line 420.
>
> which seemed clear to me, because it got deprecated.
>
>
> Thx and bye.
> Michael.
>
>
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