[rm-wg] [occi-wg] OCCI MC - State Machine Diagram
David Snelling
David.Snelling at UK.Fujitsu.com
Sat Apr 18 14:40:54 CDT 2009
Folks,
I write this note as a fellow OGF working group chair. In the
Reference Model working group we have been working toward a Reference
Model, which includes a life cycle state model. Please have a look at
the sections in our draft document that pertain to life cycle and see
if you can map your states sensibly onto/into these.
The idea is that your states, which map directly, are aliases for
those in the Reference Model. Any of yours that don't map directly,
should be sub-states of one from the reference model.
If this is not possible, please let us know. Ours is a work in
progress, so it is possible that there are faults in our model.
Please come talk to us at OGF26.
See: http://forge.gridforum.org/sf/go/doc14766?nav=1
On 18 Apr 2009, at 12:40, Sam Johnston wrote:
> Afternoon all,
>
> I have created a diagram (attached) of what I think the absolute
> minimum core states need to be... essentially boiling them down to
> "STOPPED" and "ACTIVE" with "START" and "STOP" being the only
> requisite actuators. Transitional "STOPPING" and "STARTING" states
> are optional.
>
> I believe states should be completely unambiguous so I don't
> particularly like the DMTF model ("stopped" and "active" machines
> are also "defined" but this is a separate state) and that also rules
> out vague terminology like "inactive" (which could mean both
> "stopped" and "suspended").
>
> I've got an optional RESTART actuator which takes you from "ACTIVE"
> to "STARTING" as well as an optional "SUSPEND" and "RESUME" cycle
> which takes you via the transitional "SUSPENDING" and "RESUMING"
> states between "ACTIVE" and "SUSPENDED".
>
> DMTF have another "paused' state but I wonder whether this needs to
> be a state in its own right or if it's an attribute of "suspended".
> That's a rhetorical question - we could spend all week discussing
> nuances but for now I want to make sure we agree on the absolutely
> minimalist core functionality. Other states can be added via a live
> registry which we can pre-populate with a view to guiding innovation
> without stifling it.
>
> This has been uploaded to the wiki: http://forge.ogf.org/sf/wiki/do/viewPage/projects.occi-wg/wiki/StateModel
>
> Sam
>
> <OCCI MC State Machine.png><OCCI MC State
> Machine.svg>_______________________________________________
> occi-wg mailing list
> occi-wg at ogf.org
> http://www.ogf.org/mailman/listinfo/occi-wg
Take care:
Dr. David Snelling < David . Snelling . UK . Fujitsu . com >
Fujitsu Laboratories of Europe Limited
Hayes Park Central
Hayes End Road
Hayes, Middlesex UB4 8FE
Reg. No. 4153469
+44-7590-293439 (Mobile)
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