[jira] [Commented] (DTACLOUD-309) RFE: Deltacloud API backend errors/exceptions categorisation system

["Jan Provaznik (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DTACLOUD-309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13473219#comment-13473219 ] 

Jan Provaznik commented on DTACLOUD-309:
----------------------------------------

This request was originally tracked here: https://issues.apache.org/jira/browse/DTACLOUD-224
One of use cases for Aeolus is this (most important): if instance create action fails for some reason, we need to decide if the instance should be launched on same provider with different configuration (different realm/hwp...) or if it's better to try launch the instance on another provider account or another provider.

Bellow is basic kick-off list of errors for which it would be nice to distinguish between. Feel free to define their exception class names as you prefer. The original error message from provider would be kept in exception. IOW this would be mostly about finer graining of BackendError exception class.

Related to instance launching
* wrong image (doesn't exist)
* wrong hardware profile
* not enough resources
* wrong hw profile override value (optional?)
* wrong realm
* wrong provider account - doesn't exist, disabled, wrong credentials
* wrong provider - not accessible
* "temporary" error (if common?) - 

Related to periodic instance checking:
* provider is not accessible
* auth failure (already supported?)
* instance was not found (includes perission error?)

                
> RFE: Deltacloud API backend errors/exceptions categorisation system
> -------------------------------------------------------------------
>
>                 Key: DTACLOUD-309
>                 URL: https://issues.apache.org/jira/browse/DTACLOUD-309
>             Project: DeltaCloud
>          Issue Type: Improvement
>          Components: Server
>            Reporter: Michal Fojtik
>            Assignee: Michal Fojtik
>            Priority: Minor
>
> This JIRA should collection proposed 'Generic Errors'  and the mappings to actual provider exceptions.
> The comment should contain proposed generic error name (class) and list of exceptions that this error
> will capture.
> Example:
> **WrongImageID**
> EC2: InvalidAMIID.*
> RHEV-M: Unknown Template

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