Re: [systemd-devel] libsystemd export message_append_cmdline

[Lennart Poettering]

On Mon, 15.08.16 11:05, Brad Bishop (bradl...@fuzziesquirrel.com) wrote:

> 2 - Should I not be writing my own app - i.e. is this something
> busctl can do or makes sense to extend it to do?

busctl is a debugging tool and useful for calling methods. It's not a
good fit if you want to actively watch remote objects for specific
conditions, really.

> 3 - If I write my own application, message_append_cmdline seems to
> be a perfect fit for parsing cmdlines…how does the community feel
> about exporting it?

Hmm, I figure exposing the bus message serialization and
deserialization to user strings as part of sd-bus would be OK. But
it need some clean-ups and tests first.

Lennart

-- 
Lennart Poettering, Red Hat
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Re: [systemd-devel] libsystemd export message_append_cmdline

[Mantas Mikulėnas]

On Mon, Aug 15, 2016 at 6:05 PM, Brad Bishop 
wrote:

> Hi list
>
> I am developing an sd-event+sd-bus application that simply blocks until a
> property changes to a specific value using org.freedesktop.DBus.
> ObjectManager.PropertiesChanged and org.freedesktop.DBus.Properties.Get.
>
> I plan on using this application from service units to express ordering
> dependencies.
>
> A couple questions:
>
> 1 - Does anyone have any feedback on this approach in general?
>

Depends on how you're going to use the app. I think that's exactly how
(After=)NetworkManager-wait-online.service is implemented, for example.


> 2 - Should I not be writing my own app - i.e. is this something busctl can
> do or makes sense to extend it to do?
>

I think I've seen someone do this in shell, using dbus-send and
dbus-monitor... please don't.

-- 
Mantas Mikulėnas 
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