Correct, the original discussion was the charm behaving differently if the fingerprint had changed of the resource on the remote end. However, running resource-get deals with only fetching the new data if the fingerprint changes and so there wasn't a big draw to the feature to that end.
Now, in this way, what you're asking is for some way to tell when there is no resource? I guess I'm missing what the 0byte resource is giving you out of the gates. The charm won't work, you want to fall back? And as soon as the charm gets a non-0byte resource it's no longer useful. I really feel like that if someone wants to publish something through the store that they have to supply at least some bin that runs and outputs a clear message to the user "got get the proper bins from here" instead of just failing to deploy. Charm authors should be doing whatever is possible to fail in a clear way, through the charm, so that users are guided on the right path to moving forward. I don't think the charmstore or juju having 0byte defaults or "no resource found" is correct. It really needs to be the charm taking that failure and putting context and a path for the user to follow vs just "not found". On Thu, Sep 29, 2016 at 11:48 AM Charles Butler < charles.but...@canonical.com> wrote: > We initially asked for resource fingerprints to be available before > fetching so we could do something less expensive. > > That didn't make the 2.0 cut and was pushed back needing more forethought. > > This however is a good example of why it's a better option. > > > And I had similar logic in etcd at one point. I'll be revisiting the etcd > later to fold offlineability back into the charm using what you've proposed. > > If not resource : apt install > > -- > Juju Charmer > Canonical Group Ltd. > Ubuntu - Linux for human beings | www.ubuntu.com > Juju - The fastest way to model your application | www.jujucharms.com > -- > Juju mailing list > Juju@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/juju >
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