[Tendrl-devel] Need clarification on task https://tendrl.atlassian.net/browse/TEN-135. Please respond <eom>

[Shubhendu Tripathi]

Mrugesh,

I think I pretty well understand the use of pre and post runs defined 
for atoms and flows.

But, my question is more specific to which component does this 
validation whether APP or the SDS bridge.
Also, I want a confirmation if we need to pass these pre and post run 
details as part of job (while flow execution), if the second option 
above is to be opted for.

Regards,
Shubhendu


On 11/04/2016 02:35 PM, Mrugesh Karnik wrote:
> The pre and post conditions are to be used for verification.
>
> The pre condition is to ensure that the object being modified as part of an
> action hasn't changed state since the action was originally invoked from
> the API.
>
> The post condition is to check that the object state is what's expected as
> the result of the action being carried out.
>
> For example, on an expand operation that asks for +5GB on an object 10GB in
> size, the pre condition would be to ensure that the object's size is still
> 10GB before carrying the action out. Post condition would be to check that
> the size after the expansion is the expected value, in this case 15GB.
>
> --
> Mrugesh
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