[Sugar-devel] Git Backend Architecture | GSoC'15

[Gonzalo Odiard]

I think the big files issue is a problem with _really_ big files. Not with
the files
our users will create and modify.

My only concern with this project is keep it really simple for our users.

The objective of have a git backend is have a versioned
Journal, where you can store all the intermediate steps for a entry.

Other than that, does not have too much sense complicate the interaction
with the user.

The other win would be have a automatic backup in the cloud,
but then we need identity, like in the plugins.

Gonzalo


On Fri, Mar 20, 2015 at 10:55 AM, Sebastian Silva <sebastian at fuentelibre.org
> wrote:

>  Hi,
>
> About this Git as Journal backend project...
> I have come to the conclusion that it's a terrible idea.
>
> Don't get me wrong, I'm the first to recognize git's contribution for the
> world.
> In fact I even have a small git front project
> <http://pe.sugarlabs.org/ir/Git%20para%20Sugar>.
>
> However, as a general datastore, git is terribly innefficient especially
> when dealing with larger or binary files. You can read a detailed account
> of it's problems in the following article I found really interesting:
>
> Unorthodocs: Abandon your DVCS and Return to Sanity
> <http://bitquabit.com/post/unorthodocs-abandon-your-dvcs-and-return-to-sanity>
>
> It we do insist in adding some sort of version control, then I suggest we
> look into VCS extensions for large files, and some way that will allow the
> user to actually erase a file.
>
> In the Git world, git-annex does this but it's in my humble opinion
> A better option for this would be Mercurial's Largefiles extension.
> <http://bitquabit.com/post/unorthodocs-abandon-your-dvcs-and-return-to-sanity/>
> Mercurial also has native compatibility with Git, so I tend to think it
> could be the best of both world.
>
> The tricky part here of course is the UI so I would love to see some
> mockups of what it's expected to look like.
>
> Regards
> Sebastian
>
> <http://bitquabit.com/post/unorthodocs-abandon-your-dvcs-and-return-to-sanity/>
> El 20/03/15 a las 07:54, Gonzalo Odiard escibió:
>
> You can find useful a experiment done by Martin Abente a time
> ago "FakeCloud: a silly and quick attempt to define a generic structure for
> web-service-basedJournal storage"
>
>  sugar branch: https://github.com/tchx84/sugar/tree/fakecloud
> sugar-fakecloud extension: https://github.com/tchx84/sugar-fakecloud
>
>  He can provide more information. (cced)
>
> On Thu, Mar 19, 2015 at 4:33 PM, Shaifali Agrawal <
> agrawalshaifali09 at gmail.com> wrote:
>
>> On Thu, Mar 19, 2015 at 6:29 PM, Shaifali Agrawal <
>> agrawalshaifali09 at gmail.com> wrote:
>>
>>> For the first part I did sturdy research, I have wrote create, read,
>>> update, delete functions in shell script to work as git based backend. But
>>> for the project I will need to code same in Python and Javascript, that can
>>> be achieved via libraries like libgit2 js-git. Under the hod git is a
>>> key-value store and for generating key(sha or hash-objects) it generates a
>>> checksum of the content of file plus a header. So this can be achieved in
>>> Python and Javascript.
>>>
>>>   Links to above mentioned libraries : libgit2
>> <https://libgit2.github.com/>, js-git
>> <https://github.com/creationix/js-git>
>>
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>>
>>
>
>
>  --
>  Gonzalo Odiard
>
> SugarLabs - Software for children learning
>
>
> _______________________________________________
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>
>
>


-- 
Gonzalo Odiard

SugarLabs - Software for children learning
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