[cddlm] Re: [ogsa-wg] OGSA EMS Sequence Diagrams
Hiro Kishimoto
hiro.kishimoto at jp.fujitsu.com
Wed Sep 14 10:19:54 CDT 2005
Thanks Stuart.
My comments are in-line <HK>.
----
Hiro Kishimoto
Stuart Schaefer wrote:
> Hi,
>
>
>
> The slides in scenario #3 contain the detail that includes the
> provisioning steps. I do not see where in any of the sequence diagrams
> the CSG interacts with the ACS service. Candidate Sets are retrieved
> from the Execution Planning Services. The EPS works with ACS and should
> also be linked to Provisioning. If a service is already deployed and
> can be reused, I would presume that EPS would make this determination.
> The CDDLM system allows for this.
>
<HK>
IFAIK, EPS does not (or should not) work with ACS directory. Instead,
EPS should talk to information service.
</HK>
>
> Our presumption in CDDLM is that what is returned from the ACS is a
> parameterized template, that should be partially resolved during the
> Candidate Set Generation Phase and Resource Reservation Phase. But many
> parameters are not known until deployment time or runtime.
<HK>
In OGSA-WG scenario #1, CSG talks to ACS. However I think CSG should
talk to Information service, instead.
</HK>
> So, prior to
> invoking a service container (StartActivityFromJSDL() in the first
> diagram of scenario #1), the CDDLM service can be used to complete the
> template resolution, deploy the required systems and prepare the job for
> execution. Not sure if the sequence diagrams need this level of detail.
>
<HK>
It should be. We should add directed link from JM to CDDLM service for
deployment and configuration.
</HK>
>
> I think the only operations that are missing in the current CDDLM
> component model (container) are the commands to start and stop the
> actual job. We have taken care of all of the deploy, register, undeploy
> requirements as well as can support the "getState()" query from the
> Information Services. I would also add that we treat releasing
> resources and un-deploying configurations as different, environment
> specific operations.
>
>
>
> We can contribute the sequence diagrams that were created as part of our
> work and those created by the ACS team to show the detailed steps of
> provisioning. Would anyone like to see those?
>
<HK>
Why not? Please let us know it.
</HK>
>
>
>
>
> Thanks,
>
>
>
> Stuart Schaefer
>
>
>
>
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