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From aledsage <...@git.apache.org>
Subject [GitHub] brooklyn-server issue #211: BROOKLYN-264 Stop app while VM still being provi...
Date Thu, 23 Jun 2016 22:56:43 GMT
Github user aledsage commented on the issue:

    https://github.com/apache/brooklyn-server/pull/211
  
    My comments so far are bike-shedding.
    
    Looking at the big picture, I need to think more about:
    
    * How should we trigger the delete, so that it safely handles success and failure of provisioning?
Options include:
      * As you've done here, have `stop()` wait for the machine to be set; but abort if start()
fails.
      * Mark the entity's internal state as "requiring machine-release", and have the start()
code immediately release the machine. But we'd still need `stop()` to wait for that to be
done, otherwise we might go on to unmanage the entity and thus cancel the tasks.
    
    * For speed:
      * Can we use the jclouds event bus to be told of the VM's id long before jclouds has
returned from the provisioning call? @andreaturli what do you think?
      * Can we tell the `JcloudsLocation` instance that the provisioning has been aborted
(this would allow us to avoid waiting-for-sshable, etc). Not quite sure how best to do that.
    
    We can ignore the speed issue for now, unless there is a quick win that greatly speeds
things up. The main thing is to get it functionally correct, and with clean code.


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