[Telepathy] Offline cache

[Matthias Gehre]

I'm currently implementing a connection manager for WhatsApp, which does
not allow
to request the roster at all. So we have to keep a copy of known contacts
(from adding them/receiving messages from them)
locally.


2013/3/15 Xavier Claessens <xclaesse at gmail.com>

> Le vendredi 15 mars 2013 à 09:29 +0100, Xavier Claessens a écrit :
> > 2) Avatar cache: offline XMPP contacts does not know their avatar token,
> > but we should still announce the last known avatar.
> >
> > -> IMHO it makes no sense to write avatars on disk in multiple places,
> > so we should reuse the existing avatar cache. So gabble could store on
> > disk a contact-id -> avatar-cache-uri map. With the new spec that's
> > enough because we expose only the URI to clients.
>
> (...)
>
> > Suggestions
> > -----------
> >
> > - I think 1, 2 and 3 are all already pretty well covered, just need to
> > land TpAvatarsMixin work.
>
> Actually 2 is not covered, the contact-id -> avatar-cache-uri map can be
> shared with the offline cache exposed in my point 7. So we would have
> all contact attributes serialized into a file, we can easily extract the
> avatar URI from that.
>
> Regards,
> Xavier Claessens.
>
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