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From: "Brad Red Hat" <bradjohn@redhat.com>
To: <user@karaf.apache.org>
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In-Reply-To: <1fd5622b-4e94-d202-2560-1f37f13f9f87@composent.com>
Subject: RE: Karaf IoT
Date: Wed, 4 Jan 2017 11:39:33 -0600
Message-ID: <03b201d266b1$82cc3030$88649090$@redhat.com>
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archived-at: Wed, 04 Jan 2017 17:39:39 -0000

I'll certainly look at that a bit more. My concerns about Kura project have
as much to do with the project's level of abstraction and I can bring it up
there.   I did ask about their intentions with service interfaces.  As I've
dug into it deeper and thought about "the vision thing", to quote a US
president, I laid out some of those thoughts.

https://enjekt.org/2017/01/04/iot-and-the-abstraction-of-things/

Because it is an Eclipse project I wasn't sure that they'd be interested in
Karaf/Felix but can check. I've heard that they have, in fact, opened a Jira
ticket about it. So they may be interested. 

It isn't just about a Karaf implementation although it is certainly about
that as well. I'm also concerned about the intermediary libraries/services
that abstract developers away from low level details of pin outs in order to
make application code portable.

Obviously the intermediate level concerns really don't belong with Kura or
Karaf so I won't discuss those here.  Suffice it to say I'd like to see that
intermediate set of libraries become a "sticky" place where developers and
sensor/actuator manufacturers go to add new high level device specific
bundles for use in applications.

Brad


-----Original Message-----
From: Scott Lewis [mailto:slewis@composent.com] 
Sent: Tuesday, January 3, 2017 9:33 PM
To: user@karaf.apache.org
Subject: Re: Karaf IoT

On 1/2/2017 11:35 AM, Brad Red Hat wrote:
> I certainly understand the "short of time" problem. It just happens 
> that I have a bit of a window right now and would like to get into it a
bit deeper.
>
>
> Whether a Karaf/PAX/Felix implementation is more appropriate under the 
> aegis of Kura or as a separate project that leverages the Kura driver 
> bundles is hard to say.  I guess that would depend on a couple of things.
>
> 1. How amenable they are to a more top down approach that starts with 
> OSGi service mechanics and drives down to meet the driver bundles?
> 2. Does an Eclipse foundation project have any interest in an Karaf 
> branch project?

The ECF project would be interested in such an effort [1].  We have been/are
distributing our impl of the OSGi Remote Services/RSA specs [2] as Karaf
features [3] and have recently been exploring using remote services for
Karaf management [4].

Also, in my interaction with some of the Kura committers it's become clear
that they are doing some prototyping of running Kura services on 
Karaf [5].   I don't know whether they have release plans around that 
work, but I know that it has been going on.   It might be useful to 
convey to them directly what your desires/criticisms are, and perhaps
contribute to that work.

Scott

[1] http://www.eclipse.org/ecf
[2]
https://wiki.eclipse.org/Eclipse_Communication_Framework_Project#OSGi_Remote
_Services
[3] https://wiki.eclipse.org/EIG:Install_into_Apache_Karaf
[4] https://wiki.eclipse.org/Karaf_Remote_Management_with_Eclipse
[5] https://dev.eclipse.org/mhonarc/lists/kura-dev/