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From "Grzegorz Grzybek (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (ARIES-1578) blueprint-cm doesn't support org.osgi.service.cm.ConfigurationPlugin
Date Mon, 27 Jun 2016 09:27:52 GMT

     [ https://issues.apache.org/jira/browse/ARIES-1578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Grzegorz Grzybek reassigned ARIES-1578:
---------------------------------------

    Assignee: Grzegorz Grzybek

> blueprint-cm doesn't support org.osgi.service.cm.ConfigurationPlugin
> --------------------------------------------------------------------
>
>                 Key: ARIES-1578
>                 URL: https://issues.apache.org/jira/browse/ARIES-1578
>             Project: Aries
>          Issue Type: Bug
>          Components: Blueprint
>            Reporter: Paolo Antinori
>            Assignee: Grzegorz Grzybek
>
> I have found an issue with the {{blueprint-cm}} module:
> it doesn't integrate with possible implementation of {{org.osgi.service.cm.ConfigurationPlugin}}
registered in the OSGi framework.
> That interface allows to intercept {{ConfigAdmin}} properties updates, allowing to manipulate
their content without persisting them anywhere.
> A sample usacase can be a decrypt component that decrypts values on the fly.
> The issue on {{blueprint-cm}} is with the current implementation of {{CmPropertyPlaceholder}}:
> https://github.com/apache/aries/blob/trunk/blueprint/blueprint-cm/src/main/java/org/apache/aries/blueprint/compendium/cm/CmPropertyPlaceholder.java#L130-L140
> {code:java}
> public void updated(Dictionary props) {
>     if ("reload".equalsIgnoreCase(updateStrategy) && !equals(properties, props))
{
>         LOGGER.debug("Configuration updated for pid={}", persistentId);
>         // Run in a separate thread to avoid re-entrance
>         new Thread() {
>             public void run() {
>                 blueprintContainer.reload();
>             }
>         }.start();
>     }
> {code}
>  {{updated()}} is correctly forwarded the {{props}} param, containing eventual manipulation
of registered {{ConfigurationPlugin}} instances, but that content is discarded. The event
will trigger a reload of the whole blueprint context, that will fetch the configuration from
{{ConfigAdmin}} directly, thus bypassing the plugin behavior.



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