Do states have namespace?

[fengxia]

Marco,

I'm modeling a complex workload which may end up having a lots of 
states. So before going down that path I want to understand better how 
to modularize these states instead of laying all flat. So I thought of 
putting them into different layers within a single charm -- this works. 
Then to divide them into different charms -- this didn't.

Now I can see each unit has its own sqlite so these states won't come 
across.

On 04/18/2017 10:16 AM, Marco Ceppi wrote:
>
> No, because it's a sqlitedb per unit of charm. So a charm collocated 
> on the same machine will still have its own state.
>
> Can I ask what you're looking to achieve?
>
> Marco
>
>
> On Tue, Apr 18, 2017, 10:05 fengxia <fxia1 at lenovo.com 
> <mailto:fxia1 at lenovo.com>> wrote:
>
>     Replying my own question:
>
>     charmhelpers.core.unitdata shows how states are stored --
>     "reactive.state.xyz <http://reactive.state.xyz>" is saved in a
>     sqlite3 as a string. So if split
>     states in multiple charms, I think it will still work if deploying
>     these
>     charms to the same unit because they will be registered in the
>     same DB.
>
>     Can someone verify this?
>
>     On 04/18/2017 08:50 AM, fengxia wrote:
>     > I did a quick experiment:
>     >
>     > 1. Created two layers in one charm, each layer has a few states,
>     > set_state() can trigger @when defined in other layers.
>     >
>     > 2. Use the same set of states, now splitting them in two charms =>
>     > @when don't trigger anymore.
>     >
>     > So does this mean states have a namespace by the charm it belongs?
>     >
>
>     --
>     Feng xia
>     Engineer
>     Lenovo USA
>
>     Phone: 5088011794
>     fxia1 at lenovo.com <mailto:fxia1 at lenovo.com>
>
>     Lenovo.com
>     Twitter | Facebook | Instagram | Blogs | Forums
>
>
>     --
>     Juju mailing list
>     Juju at lists.ubuntu.com <mailto:Juju at lists.ubuntu.com>
>     Modify settings or unsubscribe at:
>     https://lists.ubuntu.com/mailman/listinfo/juju
>

-- 
Feng xia
Engineer
Lenovo USA

Phone: 5088011794
fxia1 at lenovo.com
  	
Lenovo.com
Twitter | Facebook | Instagram | Blogs | Forums

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/juju/attachments/20170418/d1c7b360/attachment.html>