Re: Moving existing ostree users to a new branch - take 2

[Alexander Larsson <alexl redhat com>]

On Mon, 2017-05-15 at 13:48 -0600, Daniel Drake wrote:
> On Mon, May 15, 2017 at 2:45 AM, Alexander Larsson <alexl redhat com>
> wrote:
> > So, here is a strawman proposal:
> >
> > * Add new per-commit metadata "ostree.origin-ref", and set it
> >   whenever we commit.
> >
> > * Add a new operation to ostree that makes it easy to copy a commit
> >   from one ref to another, changing only the origin-ref.
> >
> > * Add a new security mode in the repo config where GPG signatures
> >   are required for commits *and* the commits are required to have
> >   an ostree.origin-ref that matches the ref that was pulled.
> >
> > * Add a new magic ref name, "ostree/config", where the commit
> > contains
> >   metadata that is global configuration for the remote. There is
> >   a corresponding [config] group in the config file for the repo
> >   and an ostree operation that takes all the configuration data in
> >   the config group (plus the gpg key) and commits a new version
> >   of the ostree/config ref.
> >   (For flatpak I would also want to store our extra global metadata
> >    here with custom keys, currently xa.title and xa.default-
> > branch.)
> >
> > * Add a client side operation that update the remote configuration
> >   based on a ostree/config commit object. (i.e. update url, add new
> >   gpg keys, revoke old gpg keys, etc).
>
> I can see how you would use this to rewrite a remote config so that
> it
> points at a new URL/key.
>
> How about redirecting refs within the remote though? I guess we could
> do it by adding configuration data that includes the ref redirects,
> also to be included in the ostree/config commits?
>
> It seems like the discussion has progressed beyond the original
> suggestion of just using commit metadata to redirect to a new branch,
> but in case it is of interest, here is a rough implementation of
> that:
> https://github.com/endlessm/ostree/commits/commit-eol-redirect

Yes, I kinda hijacked this thread for a only semi-related thing. Sorry.

For ref redirect i think it makes a lot of sense to store this in the
commit itself.


-- 
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 Alexander Larsson                                            Red Hat, Inc 
       alexl redhat com            alexander larsson gmail com 
He's a scrappy Amish boxer who hangs with the wrong crowd. She's a 
vivacious gypsy museum curator who dreams of becoming Elvis. They fight 
crime!