[jira] [Commented] (OAK-5309) Supporting roles in RepositoryManager execution of maintenance tasks

["Chetan Mehrotra (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-5309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15750336#comment-15750336 ] 

Chetan Mehrotra commented on OAK-5309:
--------------------------------------

[~mduerig] Any thoughts on possible solution approach

For now I think of
# Add a new method Whiteboard#track(Class, Map filterAttrs) where the map represents attributes which can be used for filtering. The prop here would those which are passed in {{Whiteboard#register}}. Or it can be directly represented as a string filter (See #2)
# Modify OSGi whiteboard impl to convert the map to [Filter|https://osgi.org/javadoc/r4v43/core/org/osgi/framework/Filter.html]
# Have default method pass map expressing that look for impls where {{role}} is null

And have role variants specify the role

> Supporting roles in RepositoryManager execution of maintenance tasks
> --------------------------------------------------------------------
>
>                 Key: OAK-5309
>                 URL: https://issues.apache.org/jira/browse/OAK-5309
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core
>            Reporter: Chetan Mehrotra
>            Assignee: Chetan Mehrotra
>             Fix For: 1.8
>
>
> With recent support for maintenance task MBeans exposed for secondary stores via OAK-4978 its now possible to have multiple implementations of RevisionGCMBean present in same setup.
> However o.a.j.o.management.RepositoryManager implementation only supports single implementation by design. This needs to be updated to support
> # Looking up RevisionGCMBean which does not have {{role}} OSGi property defined
> # Expose a management op like startRevisionGCForRole



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