You can also use the jclouds methods in the ComputeService to stop the nodes:
ComputeService.suspendNode(id)
ComputeService.suspendNodesMatching(predicate)
That has the benefit that jclouds does the polling for you and waits
until the nodes are actually stopped.
On 20 December 2016 at 21:01, Andrew Phillips <aphill...@qrmedia.com> wrote:
>> But its tough to decide on to estimate how long a machine might take to
>> reach STOPPED state.
>>
>> Anyway other option would be check the node state again and send the
>> confirmation.
>
>
> Yes, sorry, this is what I meant. I agree that inserting a "hopeful pause"
> is probably too brittle; what is probably needed here is something like:
>
> for (i = 0 to max_attempts) {
> if stopped(instance) break
> sleep(pause_time)
> }
>
> The AWS API more or less "recommends" this as an approach by providing an
> explicit command for this:
>
> http://docs.aws.amazon.com/cli/latest/reference/ec2/wait/instance-stopped.html
>
> Regards
>
> ap
