[lttng-dev] GSoC 2013 proposal - Babeltrace python bindings

[Jérémie Galarneau]

Hi Xuan,

First, thanks for reaching out!

Basically, the Babeltrace Python bindings project aims at providing Python
developers with a library to read the trace formats supported by
Babeltrace. I'll take the chance to detail what we had in mind with this
project.

The first part consists of producing Python bindings to libbabeltrace's
public API. This has already been done last summer but is not yet part of
the master branch. It currently lives in the "bindings/python" branch of
Babeltrace's repository[1]. However, it is not completely up-to-date and
lacks thorough testing.

The second part, which is more of an interface design exercise, is exposing
the trace data read by libbabeltrace in a "Pythonic" way. That includes
implementing Python's generator-iterator interface, expressing the trace
metadata using Python's data structures, etc. libbabeltrace can also be
used as a trace writer so the Python interface should expose this
functionality by providing a symmetric output interface. All in all, it
calls for a lot more design work than actual implementation.

For starters, you may want to have a look at the CTF specification[2],
which is currently the only trace format supported by Babeltrace, to give
you an idea of the challenges at hand. Trying out the complete LTTng
toolchain will also give you a better view of this project.

[1]
https://bugs.lttng.org/projects/babeltrace/repository/show?rev=bindings%2Fpython
[2]
http://git.efficios.com/?p=ctf.git;a=blob_plain;f=common-trace-format-specification.txt;hb=master

Don't hesitate to come forward and propose a tentative API or ask for
clarifications.

Regards,
Jérémie

On Tue, Apr 9, 2013 at 5:38 AM, Xuan Hu <huxuan8218528 at gmail.com> wrote:

> Hello everyone,
>
> I'm really interested in the project of `Babeltrace python bindings`.
> Besides I'm confident with my python skill and I'm willing to study more
> skills related. As far as I know, I think this is a somewhat standalone
> project which should create a module for python programmers to get the
> results which babeltrace produce. Wish potential mentor (jgalar) can judge
> whether it is or not. Besides I wonder to know any suggestions for me to
> begin with this project?
>
> --
> 扈煊 Sean.Hu
>
> 北京大学信息科学技术学院2012级硕士研究生
> 2012, Master Degree Candidate, EECS, PKU
>
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-- 
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com
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