[Pulp-dev] OSTree Guesstimates of a Basic Implementation

[Robin Chan]

I chatted with Tanya about this today.
If we can get some engagement from coreos upstream users or katello to talk
through some more complicated use cases, this would help address some of
the concerns Tanya had. We would welcome this now (so that our estimates
can become more informed) and will pursue these avenues during scoping &
design once we have staffing and bandwidth to start on this. The estimates
meet my needs for planning and prioritization against other roadmap/backlog
items.
I'd also be interesting in knowing if there is a different iterative
approach we can take to try to provide some minimal functionality that
would allow folks to start using Pulp 3 to manage OSTree plugin and drive
requests for more concrete, complicated use cases.

-Robin

On Thu, Nov 26, 2020 at 1:14 PM Tanya Tereshchenko <ttereshc at redhat.com>
wrote:

> Thanks for the write-up and the guesstimation!
>
> It would be really helpful for me personally to see stakeholder use cases
> or to understand if we are trying to cover similar use cases as we had in
> Pulp 2.
> I believe it's very important for this specific plugin to get the
> modelling right right from the start.
> The pulp 2 implementation had issues because we started with a basic
> implementation and modelling and then were adding more on top preserving
> backward compatibility, etc.
> Even if we implement just some MVP, I strongly encourage to look at all
> the complicated use cases, existing and potential ones, before starting the
> implementation.
> For that reason, I'd add at least 2 FTE weeks just for the proper design
> planning and discussions.
>
> An example of things to consider:
> > As a pulp_ostree user, I can define an OSTree Remote (no extra
> attributes planned)
> Will it work in a mirror mode always? Was the ostree-reset considered? aka
> commit order can change or part of the history can be rewritten, similar to
> git reset.
>
> Having said that, I understand that we don't have time to do proper
> estimation and look more into this right now. Your estimates look good to
> me, I'd just add more FTEs for planning.
>
> Tanya
>
> On Wed, Nov 25, 2020 at 10:27 PM Brian Bouterse <bmbouter at redhat.com>
> wrote:
>
>> I was asked to look to write down a guess of what it would take to
>> bootstrap a basic-functionality ostree plugin. I wrote my guesses here:
>> https://hackmd.io/KT6AZGMBScuP7z6m9316Tg Basically 7.5 FTE weeks is my
>> claim.
>>
>> Any feedback is appreciated, either here or on the document. Also it's
>> just an estimate; I think we need to be really thoughtful about when the
>> right time is to start this plugin. It's up to the developer community and
>> stakeholders to determine what (and when) we do next on this.
>>
>> All the best,
>> Brian
>>
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