[lttng-dev] Machine Interface

[Paul_Woegerer@mentor.com (Woegerer, Paul)]

On 02/06/2014 03:42 AM, Jonathan Rajotte wrote:
> Hello all,
>
> After speaking with Michel Dagenais, Genevi?ve Bastien, folks over at EfficiOs
> and Ericsson, a machine interface for lttng-tool would be a nice feature
> to have. Olivier Cotte and me will be working on MI for the
> next few weeks.
>
> The main objective would be to reduce parsing complexity
> in control tools.
> ex:Regex used in TMF control service.
> (org.eclipse.linuxtools.internal.lttng2.ui.views.control.service.LTTngControlService.java)
>
> Multiples solutions come to mind:
> -XML
> -JSON
> -YAML

YAML sounds very attractive in this context.

It's easily parseable even from a shell script. If you need to automate
LTTng tracing tasks on a small embedded target busybox is all you have!

Best,
Paul

> -Custom syntax (like GDB Machine interface* as proposed by Alexandre
> 				Montplaisir)
>
> XML/JSON/YAML promote extensibility and ease of development for new tools
> dependant on lttng-tools by being established standards.
> On the other hand, they add dependencies to lttng-tools where a custom syntax
> would not.
>
> Machine interface output would be generated only with --mi option and
> could contain additional information than regular output.
>
> We are focusing on output right now but we may eventually add a 'mi'
> command for input if necessary.
>
> What do you think ?
>
> Thanks
>
>
> *https://sourceware.org/gdb/onlinedocs/gdb/GDB_002fMI.html
>


-- 
Paul Woegerer, SW Development Engineer
Sourcery Analyzer <http://go.mentor.com/sourceryanalyzer>
Mentor Graphics, Embedded Software Division