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https://issues.apache.org/jira/browse/OAK-3201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14736730#comment-14736730
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Dominik Süß commented on OAK-3201:
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[~frm], [~chetanm] - Sling hit a simliar issue when introducing the pluggable
ResourceProviders making the resourceResolverFactory available before the
mandatory providers where available. Sling took a configuration approach where
the ResoureResolverFactory can be configured with "Required Providers". By
default this is only the single entry
"org.apache.sling.jcr.resource.internal.helper.jcr.JcrResourceProviderFactory"
but any installation can define an own set of mandatory providers. The
ResourceProviderFactory is only made available through the corresponding
activator if the required provider are available.
https://github.com/apache/sling/blob/trunk/bundles/resourceresolver/src/main/java/org/apache/sling/resourceresolver/impl/ResourceResolverFactoryActivator.java
> Use static references in SecurityProviderImpl for composite services
> --------------------------------------------------------------------
>
> Key: OAK-3201
> URL: https://issues.apache.org/jira/browse/OAK-3201
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core
> Reporter: Francesco Mari
> Assignee: Francesco Mari
> Fix For: 1.3.6
>
> Attachments: OAK-3201-01.patch, OAK-3201-02.patch, OAK-3201-03.patch,
> mbean-test.log
>
>
> {{SecurityProviderImpl}} has dynamic references to many other services, like
> {{RestrictionProvider}}, that represent the configuration of this component.
> Being these services dynamic, the OSGi runtime has no clear dependency
> relationship between the {{SecurityProviderImpl}} and the required services.
> Thus, it may happen that an instance of {{SecurityProviderImpl}} is published
> before the services it requires are started, creating a window where the
> {{SecurityProviderimpl}} is operating differently from the way it's
> configured.
> I suggest to turn the dynamic references in {{SecurityProviderImpl}} to
> static ones to improve the consistency of the implementation.
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