[sos-devel] sosreport manifest?

[Andrew Hecox]

On 03/12/2012 10:17 AM, Bryn M. Reeves wrote:
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> On 03/12/2012 01:00 PM, Andrew Hecox wrote:
>>> tar archives provide a journal/manifest of the names of files,
>>> and where they are. Because tar is a well known file format,
>>> there are already language bindings in place for everything
>>> anyone would want to do.
>
> Unfortunately this does not solve the problem; as I mentioned before
> the tar structure should be considered an ABI. It is subject to change
> and is not discoverable in a way that will support upcoming changes in
> a robust way.

I'd guess to most consumers, the logical layout & content is an API 
found through tar bindings for whatever your specific languages are.

> For instance, sos will soon need to have the ability to collect the
> same configuration file from multiple locations and to record this
> information in the archive. While it would be possible to search all
> archives for all possible paths this is inefficient and prone to
> failure. For instance, if we change the set of command line options
> used to run a program the path in the tarball will changes as might
> the content present at that path.

what are these "same configuration file from multiple locations" use-cases?

-Ah

> This also cannot address more complex manipulations of the data than a
> simple "read this data from this path". In looking at the tools that
> consume sos data there is huge overlap and commonality in the
> information that they retrieve and the processing that they carry out.
> Reinventing this in each project that has overlapping requirements is
> not maintainable long-term and will hinder sos's ability to adapt to
> meet changing requirements (since there will be pressure to not make
> changes that would affect downstream consumers).
>
> Regards,
> Bryn.
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-- 
Andrew Hecox
Supervisor, Software Engineering
Subscription Engineering
没有压力，就没有动力