[jira] [Created] (JCLOUDS-540) Allow to list nodes of a concrete Location in the ComputeService

["Ignasi Barrera (JIRA)" <ji...@apache.org>]

Ignasi Barrera created JCLOUDS-540:
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             Summary: Allow to list nodes of a concrete Location in the ComputeService
                 Key: JCLOUDS-540
                 URL: https://issues.apache.org/jira/browse/JCLOUDS-540
             Project: jclouds
          Issue Type: Improvement
          Components: jclouds-compute
    Affects Versions: 1.7.2
            Reporter: Ignasi Barrera
            Assignee: Ignasi Barrera
             Fix For: 1.8.0


The ComputeService only offers the following methods to get the information of the existing nodes:

* listNodes
* listNodesByIds
* getNodeMetadata

Those are OK to get all the nodes in all locations, or only certain nodes one knows in advance, but are not enough if one wants to work only with a concrete location, which can be quite a common use case.

In cases where the provider disables a location (this happens quite often in DigitalOcean depending on their load) or when a region experiences failures (this happened in AWS more often than it would be desirable), it could be of great help to have a way in the ComputService to scope the operations to a concrete location. For example, when a region in AWS fails, right now one can't list the nodes in other locations using the ComputeService, and this is something that should be fixed.

Adding the following method should be enough:

* listNodesInLocation(int locationId)

But the locationId parameter could also be added to the "runScriptOnNodes" if needed. Please, use this issue to discuss the implementation and the scope of the changes!



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