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Posted to dev@aries.apache.org by "John Ross (JIRA)" <ji...@apache.org> on 2012/08/07 21:36:12 UTC
[jira] [Created] (ARIES-902) Reference counts not being checked
before removing constituent relationships between the "provisioned to"
subsystem and bundle resources.
John Ross created ARIES-902:
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Summary: Reference counts not being checked before removing constituent relationships between the "provisioned to" subsystem and bundle resources.
Key: ARIES-902
URL: https://issues.apache.org/jira/browse/ARIES-902
Project: Aries
Issue Type: Bug
Components: Subsystem
Reporter: John Ross
Assignee: John Ross
When uninstalling a subsystem, the reference count is not being checked before removing the constituent relationships between the "provisioned to" subsystem and bundle resources. If the reference count is not equal to zero, the constituent relationships should not be removed. For example, the bundle resource might be a dependency of the uninstalling subsystem and a content resource of the "provisioned to" subsystem.
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[jira] [Resolved] (ARIES-902) Reference counts not being checked
before removing constituent relationships between the "provisioned to"
subsystem and bundle resources.
Posted by "John Ross (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ARIES-902?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
John Ross resolved ARIES-902.
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Resolution: Fixed
Fixed in http://svn.apache.org/viewvc?view=revision&revision=1371183.
Knowing when to retain or remove constituent relationships between subsystems and bundles can be tricky. For example, the subsystem being uninstalled may have a reference to a bundle that's a dependency provisioned to (i.e. is a constituent of) another subsystem. If the reference count is zero, the constituent relationship between the bundle and the other subsystem should be removed. Note that the subsystem being uninstalled may be the "provisioned to" subsystem if it accepts dependencies. The reference count cannot always be relied upon, however. In the case of an unscoped subsystem being uninstalled that shares a bundle with another unscoped subsystem, the reference count will not be zero but the constituent relationship should be removed nevertheless.
The approach taken in this patch attempts to cover all possibilities by always removing the constituent relationship between the subsystem being acted upon (i.e. the subsystem being uninstalled) and the bundle. There is no harm done if the relationship does not actually exist. Then, if the resource is uninstallable (i.e. reference count equals zero), the constituent relationship between the "provisioned to" subsystem and the bundle is removed. There is no harm done if the "provisioned to" subsystem turns out to be the same subsystem as the one being acted upon.
> Reference counts not being checked before removing constituent relationships between the "provisioned to" subsystem and bundle resources.
> -----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: ARIES-902
> URL: https://issues.apache.org/jira/browse/ARIES-902
> Project: Aries
> Issue Type: Bug
> Components: Subsystem
> Reporter: John Ross
> Assignee: John Ross
>
> When uninstalling a subsystem, the reference count is not being checked before removing the constituent relationships between the "provisioned to" subsystem and bundle resources. If the reference count is not equal to zero, the constituent relationships should not be removed. For example, the bundle resource might be a dependency of the uninstalling subsystem and a content resource of the "provisioned to" subsystem.
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