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https://issues.apache.org/jira/browse/MUSE-243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12530046
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Arun Ramakrishnan commented on MUSE-243:
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I have a couple of questions about this.
1) Do we need some interface, like a listener, to notify muse of the updates
and pass on the jar file so that muse can load resource types? The
ResourceTypeLoaderPoller will need to have add/remove listener methods then.
That way the code that loads the resource type from the jar will be independent
of the code polling (actively or at initialization) a directory.
2) If a user wants to directly change the DirectoryPoller, where will this be
configured? Another element in muse.xml right? Since the DirectoryPoller is a
Runnable, and will be managed by the ResourceTypeLoaderPoller this means that
by changing only the DirectoryPoller, and using the default
ResourceTypeLoaderPoller, we still will use a threaded approach?
> Dynamic discovery and aggregation of resource types
> ---------------------------------------------------
>
> Key: MUSE-243
> URL: https://issues.apache.org/jira/browse/MUSE-243
> Project: Muse
> Issue Type: New Feature
> Components: Core Engine - Resource and Capability APIs
> Reporter: Balan Subramanian
> Assignee: Dan Jemiolo
> Fix For: 2.3.0
>
> Attachments: muse-243 - Dynamic discovery and aggregation of resource
> types.pdf
>
>
> In some cases all resource type definitions are not available at the time the
> Muse runtime starts. So even though multiple resource types can be hosted by
> a single Muse instance, all the resource type definitions must be available
> before Muse starts and listed in muse.xml. It is desired that Muse be made
> dynamic so that it can monitor a particular folder where an archive (JAR for
> example) is dropped. This archive will contain the necessary classes,
> descriptors, router entries etc. and a muse.xml fragment which will be used
> by Muse to instantiate the specified instances of that resource type. As an
> additional enhancement, it is desired that in addition to support archive
> files, Muse supports this feature for OSGi bundles by registering with the
> OSGi container's bundle registry. This enhancement is applicable only when
> the runtime environment for Muse is OSGi.
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