On 03/06/13 20:15, Ellinger, David wrote:
> I have been working on modifying the EC2 Driver to accommodate "EBS" backed
> instance ("persistent") and "S3 backed" instances (transient). At the moment
> the deltacloud actions are for S3 backed instanced. So when "STOP" is used,
> the instance is terminated.
thanks for taking the lead on this David
>
> I have a requirement to make it so I can perform a "STOP" on EBS backed
> instances.
>
> So I've modified the EC2 driver to have a new Finite State Machine for
> "instance states", now when STOP is performed, the state goes to "stopped"
> instead of "finish", and then when DESTROY is performed the instance state
> goes to "finish".
>
> This works great with persistent instances, but now I have an issue with
> transient instances. Since STOP is not an applicable EC2 action for these
> instances, I get an EC2 error.
>
> My solution ---
>
> I would like to make it so when "STOP" is performed, it checks to see if the
> instance is persistent or transient. If it is persistent, then I would like
> to perform the STOP action, otherwise if it is transient I would like to
> perform the DESTROY action.
>
> I unfortunately am not familiar enough with Ruby to make this particular
> change. So I'm asking if anyone knows of a better solution, or how to check
> the instance type and where that should be implemented in the driver.
>
it looks like you've had a good go at doing this with
https://github.com/deltacloud/deltacloud-core/pull/44 ? I put a comment
on that pull request - it's been a while since I've looked at the ec2
driver or the way we define the state machines (and where/how they're
used - like for determining the list of available actions to advertise
for a given instance). I need to spend some more time on this but can't
today - in any case I hope to get a proper response to you asap,
all the best, marios
> I appreciate any assistance on this,
>
> Thank you
>
>
>
