openstack team mailing list archive

[Brian Schott <brian.schott@xxxxxxxxxxxxxxxxxx>]

Why does getting the instance id require the API to block?  I can create 1 or 1000 UUIDs in order (1) time in the API server and hand back 1000 instance ids in a list of <server> entries in the same amount of time.  I'm more concerned about an external user hitting the API server 1000 times to generate a 1000 instance request, then hitting the API server 1000 more times to check the status until a 1000 instances return "running".  That's a lot of socket connections.

The SeverDetailsResponse isn't a list?  You can't just return:
<server>
...
</server>
<server>
...
</server>
<server>
...
</server>


Brian Schott, CTO
Nimbis Services, Inc.
brian.schott@xxxxxxxxxxxxxxxxxx





On May 23, 2011, at 11:52 AM, Ed Leafe wrote:

> On May 23, 2011, at 11:41 AM, Jorge Williams wrote:
> 
>> I don't see how that peculates anything.  Treat the instance id as the reservation id on single instance creations -- have a separate reservation id when launching multiple instances.  End of the day even if you have the capability to launch multiple instances at once you should be able to poll a specific instance for changes.  
> 
> 
> 	I'm not too crazy about an API call returning one thing (instance ID) for one call, and a different thing (reservation ID) for the same call, with the only difference being the value of one parameter. Do we do anything like that anywhere else in the API?
> 
> 	Also, with distributed zones, getting an instance ID requires the api to block until the host selection can be completed, and the host's zone database updated with the new instance information. Granted, that's not an agonizingly slow or expensive operation even if it does involve several inter-zone HTTP calls, but it isn't the cleanest and most scalable design IMO.
> 
> 
> -- Ed Leafe
> 
> 
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