Re: [MirageOS-devel] Irmin-on-Mirage status

[Thomas Gazagnaire <thomas@xxxxxxxxxxxxxx>]

>> We indeed need to expose something else to make that logic easier. I think 
>> the simplest way would be to expose a functor in Git.Memory[1] for storing 
>> inflated values -- currently we are simply using in-memory Hashtbl, but that 
>> could be made a bit more abstract. Using that functor you can them have an 
>> Git.Store.S that you can pass to Irmin. What do you think?
> 
> That's possible, but the main problem is that the Irmin functor
> requires Git.Sync.IO, Git.FS.IO and LOCK, none of which I want to
> implement in the browser.

You don't need Git.FS.IO and I'm not sure you need the lock, see how 
Irmin_git.Memory is implemented:

https://github.com/mirage/irmin/blob/master/lib/git/irmin_git.ml#L727

For Sync.IO actually that would be quite cool to `git fetch/push` from your 
browser using the smart HTTP protocol .... but if you can pass mock functions 
to start with.

Thomas


> 
> I have an experimental branch here that stores the contents/blobs in
> Git format, but (currently) nodes/trees and commits in Irmin format:
> 
> https://github.com/talex5/irmin-indexeddb/tree/git-format
> 
> I also need a scheme to upgrade from the old format to the new one. I
> have a test script (test.html) in that repository that tries an
> upgrade (but fails, because it's not implemented yet).
> 
>> Thomas
>> 
>> [1]: https://github.com/mirage/ocaml-git/blob/master/lib/memory.ml#L34
> 
> 
> 
> 
> -- 
> Dr Thomas Leonard        http://roscidus.com/blog/
> GPG: DA98 25AE CAD0 8975 7CDA  BD8E 0713 3F96 CA74 D8BA


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