libvirt users - Apr 2010 - libvirt: C++ or Java?

Hello,

I am planning to develop a management application for managing Redhat Xen
and Redhat KVM hypervisors. I am evaluating the Java bindings versus the C++
version of libvirt. As part of evaluation, I could not find meaningful
answers to the questions below. Hence, I thought that people on this mailing
list would be the most appropriate to comment on them. Can you please let me
know your views?

1. Are all functions that are available in C API available in Java?
2. Are Java bindings added along with every enhancement to C API?
3. If answer to above question is negative, typically how long does it takes
for the addition of Java bindings for the enhancement?
4. Most of libvirt based third party management applications use which of
Java bindings or C API?
5. What are your good/bad experiences while using either of C API or Java
bindings?
6. What is your concluding personal recommendation?

And finally, since libvirt is a Redhat Emerging Technology project, does
Redhat or any other third party service providers provide paid assistance,
support?

Appreciate your time. Thanks.

Regards,
Ganesh
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On Sun, Apr 11, 2010 at 04:19:14PM +0530, Ganesh Pagade
wrote:
> Hello,
> 
> I am planning to develop a management application for managing Redhat Xen
> and Redhat KVM hypervisors. I am evaluating the Java bindings versus the
C++
> version of libvirt. As part of evaluation, I could not find meaningful
> answers to the questions below. Hence, I thought that people on this
mailing
> list would be the most appropriate to comment on them. Can you please let
me
> know your views?
  Hum, could you avoid posting the same questions 4 times on the list,
thanks !
> 1. Are all functions that are available in C API available in Java?
  there can be a bit of lag
> 2. Are Java bindings added along with every enhancement to C API?
  those are separate code bases, so no guarantee. Using the C api
is the only way to make sure you have access to the latest features,
Python is usually up to date too as it's included in the main tree
and releases.
> 3. If answer to above question is negative, typically how long does it
takes
> for the addition of Java bindings for the enhancement?
  Time for Bryan Kearney to realize the gap and implement it. It goes
faster if he's notified or receive patches of course.
> 4. Most of libvirt based third party management applications use which of
> Java bindings or C API?
 We use python a lot ourselves.

Daniel

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