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From "Andreas Pieber (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KARAF-1009) equinox Region support
Date Sun, 13 Nov 2011 01:59:51 GMT

    [ https://issues.apache.org/jira/browse/KARAF-1009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13149200#comment-13149200

Andreas Pieber commented on KARAF-1009:

I didn't looked in it deep enough, but I though so because of the name of the issue (equinox
Region) and a direct reference to org.equinox... somewhere; but if it works one felix too
+1 :-)
> equinox Region support
> ----------------------
>                 Key: KARAF-1009
>                 URL: https://issues.apache.org/jira/browse/KARAF-1009
>             Project: Karaf
>          Issue Type: Improvement
>          Components: karaf-core
>    Affects Versions: 3.0.0
>            Reporter: David Jencks
>            Assignee: David Jencks
>         Attachments: KARAF-1009.diff
> Virgo and the subsystem RI (under development) use the equinox region jar for isolation
in R43 frameworks.  Subsystem provides a convenient way to set up some isolation containers
but is much less general than the regions jar or model allow for.  It might be useful both
before subsystems is available and to provide the additional flexibility to integrate region
based isolation in karaf.
> the attached patch implements isolation and provides some minimal administration commands.
 Set up the desired region model in etc/regions-config.xml.  The available commands are:
> region:info shows the structure of the regions and which region each bundle is in
> region:addbundle moves a bundle from one region (probably the root) to the specified
> region:addfilter creates a filter between regions. AFAICT once created a filter cannot
be modified.
> region:addregion adds a region
> the model in regions-config.xml is installed only on first startup: subsequent modifications
will have no effect without a clean start.
> The "from" and "to" regions for a filter match the region api but seem backwards to me:
a filter from R1 to R2 lets the stuff allowed by the filter in R2 be visible to R1.
> To build, you need to build the /region module with -Pfetch-external to get the region
jar in your local maven repo.
> Generally the practical way to install bundles into a region is to specify the (new)
"region" attribute on a feature.  I've set up the jpa and jndi features to install into the
application region included as an example.  Previously I've modified the aries 0.4-SNAPSHOT
util jar to include a recursive bundle tracker that will let the blueprint extender find blueprint
bundles in all regions no matter how isolated so the jpa blueprint config should get created.
 If it doesn't check that your aries util bundle is up to date.  

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