We're continuing the discussion about this in the charms.reactive issue tracker: https://github.com/juju-solutions/charms.reactive/issues/87
Feel free to start hacking on this! 2017-10-05 18:37 GMT+02:00 sheila miguez <she...@pobox.com>: > I'd like something like this. > > The layer-snap's upgrade-hook cycle calls code[1] that checks for a > non-zero resource, and then checks whether that resource has changed. I bet > many charmers do this, and it would be useful to have a decorator that does > it for us. > > > [1] https://github.com/stub42/layer-snap/blob/master/lib/ > charms/layer/snap.py#L53 > > > > > On Tue, Sep 26, 2017 at 9:51 AM, James Beedy <jamesbe...@gmail.com> wrote: > >> That totally does! This sounds like a great path forward that would allow >> us to eventually migrate away from having 'upgrade-charm' fire when a >> resource is attached, while maintaining backward compat for the charms that >> use it until its deprecated. >> >> Well .... I didn't mean to just imply that things should change to this ^ >> way, but it seems sensible. Possibly we could have more of a conversation >> around this? >> >> ~James >> >> >> >> On Tue, Sep 26, 2017 at 12:41 AM, Merlijn Sebrechts < >> merlijn.sebrec...@gmail.com> wrote: >> >>> Does a `resource.changed` flag address your needs? That should be >>> possible to implement in charms.reactive, I think. >>> >>> 2017-09-24 17:53 GMT+02:00 James Beedy <jamesbe...@gmail.com>: >>> >>>> How do people feel about splitting the upgrade-charm hook into multiple >>>> hooks to facilitate better resource management? >>>> >>>> What I'm thinking would be super helpful would be to have the >>>> upgrade-charm hook still active for charm upgrades, and have separate hooks >>>> or flags that would indicate resource upgrades. >>>> >>>> I'm thinking something like: >>>> >>>> 'juju attach myapp myresource=myresource.file' >>>> >>>> Would cause the 'upgrade-resource-myresource' hook to become active on >>>> instances of 'myapp'. >>>> >>>> I feel that having this affinity from resource -> >>>> resource-upgrade-<resource-name> hook would be a huge win for resource >>>> management. >>>> >>>> Thoughts? >>>> >>>> >>>> >>>> >>>> -- >>>> Juju-dev mailing list >>>> Juju-dev@lists.ubuntu.com >>>> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailm >>>> an/listinfo/juju-dev >>>> >>> >>> >> >> -- >> Juju mailing list >> j...@lists.ubuntu.com >> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailm >> an/listinfo/juju >> >> > > > -- > she...@pobox.com >
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