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https://issues.apache.org/jira/browse/ARIES-773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timothy Ward reassigned ARIES-773:
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Assignee: Timothy Ward
> Usage of a Configuration Admin service within an isolated application
> framework
> -------------------------------------------------------------------------------
>
> Key: ARIES-773
> URL: https://issues.apache.org/jira/browse/ARIES-773
> Project: Aries
> Issue Type: New Feature
> Components: Application, Blueprint
> Affects Versions: 0.3, 0.4
> Environment: All
> Reporter: Chris Channing
> Assignee: Timothy Ward
> Labels: patch
> Attachments: Apache Aries Contribution.pdf, changelist, patch.diff
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Problem Summary:
> Currently there is no consistent way for consuming a Configuration Admin
> service from an isolated application framework. The following content
> summarises the problems a developer would face with Aries if the
> Configuration Admin service is essential to their application:
> - Blueprint
> The isolation boundaries are slightly marred by the current Aries Blueprint
> CM implementation. The underlying CM namespace handler that is registered by
> Blueprint is wired with a Configuration Admin service that resides in the
> root framework. The Configuration Admin service is then subsequently used for
> any Blueprint bundles requiring configuration (including bundles from an
> isolated framework).
> The compendium specification stipulates that when a Blueprint bundle is being
> installed/updated the Blueprint container should delegate service
> registrations through the Blueprint bundle context. From a configuration
> perspective, if the bundle that is being managed resides in an isolated
> framework then this creates a service visibility problem (the bundle context
> will reference the isolated service registry).
> Consider as an example the runtime usage of a Property-Placeholder for an
> isolated Blueprint bundle. Within the Blueprint CM container mechanics, the
> Configuration Admin service (provided by the CM namespace handler) will be
> used to fetch an existing configuration for the supplied PID, a Managed
> Service will then be exposed (bound to the PID) as a hook for further
> configuration updates. If any configuration updates should occur for the PID
> the associated Managed Service exposed in the isolated application framework
> will never be "seen" by the Configuration Admin service in the root framework
> for it to notify.
> - Manual
> Much like the Blueprint issue mentioned above, if a bundle within an isolated
> application framework requires the use of the existing Configuration Admin
> service and needs to expose a Managed Service for future updates there is
> currently no way to do this.
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