ISSUE 70: Deployment, Redeployment - Granularity and Semantics

[Scott Vorthmann <scottv@tibco.com>]

http://www.osoa.org/jira/browse/ASSEMBLY-70

On Jun 24, 2008, at 5:43 AM, Mike Edwards wrote:
>
> Raiser:   Mike Edwards
>
> Description:
>
> Discussions at the June 2008 F2F meeting made it clear that the  
> description of Deployment, Redeployment,
> the associated granularity and semantics associated with these  
> operations are unclear from the specification
> but they are of real concern to both runtime implementers and to  
> developers and deployers of solutions,
> since they need to have a good understanding of what will happen.
>
> This emerged particularly from a discussion of deployment actions  
> which cause "rewiring", and how the
> Domain configuration is changed when a deployment or redeployment  
> action has the effect of changing
> or adding wire targets.  The same can be said for deployment actions  
> which change Domain level
> property values.
>
> The SCA Assembly specification needs additional material to describe  
> the effects of deployment and
> redeployment and how changes to wiring and to property values are  
> handled.
>
> There may also be the need to consider a full lifecycle description  
> for SCA components including actions
> such as "Start" and "Stop".  The current specification does not say  
> anything about these lifecycle states
> but they become important once considering the possibility of  
> dynamic update of wiring and/or property
> values.
>
> It is likely that the behaviours described will need to be optional  
> - some runtimes may need to be relatively
> static and may not permit dymanic changes at all.  Other runtimes  
> may make a virtue of the capability to
> change aspects of the deployed domain at the drop of a hat.
>
>
> Proposal:
>
> None at this time
>
>
>
> Yours,  Mike.
>
> Strategist - Emerging Technologies, SCA & SDO.
> Co Chair OASIS SCA Assembly TC.
> IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
> Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431
> Email:  mike_edwards@uk.ibm.com
>
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