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https://issues.apache.org/jira/browse/METRON-777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16124946#comment-16124946
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ASF GitHub Bot commented on METRON-777:
---------------------------------------
Github user ottobackwards commented on the issue:
https://github.com/apache/metron/pull/530
*[bundles-lib/src/main/java/org/apache/metron/bundles/ExtensionManager.java,
line 255 at
r2](https://reviewable.io:443/reviews/apache/metron/530#-Kr7wzDH9halWFNY1USf-r2-255:-KrQzElyQAwCPBAmEFkl:bzcp17t)
([raw
file](https://github.com/apache/metron/blob/571168d897cdd10bc616cef92b613763f76a1842/bundles-lib/src/main/java/org/apache/metron/bundles/ExtensionManager.java#L255)):*
<details><summary><i>Previously, mattf-horton
wrote…</i></summary><blockquote>
Probably a feature we want to return as soon as possible.
</blockquote></details>
True, but we do not have a solid upgrade story, and the deploy story for
extensions is not reviewed yet. This will be a good follow on.
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*Comments from
[Reviewable](https://reviewable.io:443/reviews/apache/metron/530)*
<!-- Sent from Reviewable.io -->
> Create a plugin system for Metron based on 'NAR'
> ------------------------------------------------
>
> Key: METRON-777
> URL: https://issues.apache.org/jira/browse/METRON-777
> Project: Metron
> Issue Type: New Feature
> Reporter: Otto Fowler
> Assignee: Otto Fowler
>
> The success of the Metron project will be greatly dependent on community
> participation, and with that the ability to adapt and extend Metron without
> having to maintain a fork of the project.
> As organizations and individuals look to extend the Metron system with custom
> parsers, enrichments, and stellar functions that may be proprietary in
> nature, the ability to develop and deploy these extensions outside the Metron
> code base is critically important.
> To that end, and after community discussion and proposal we create or
> formalize the 'plugin' development story in Metron.
> The proposal is to adapt the Apache Nifi NAR system for use in Metron. This
> will provide the system with:
> * archetype(s) for developer projects and independent development
> * defined packaging and metadata for 'plugin' products
> * loading and instantiation with classloader isolation capabilities
> * removing the necessity for shading plugin jars
> These capabilities will also enable other features, such as plugin lifecycle,
> plugin configuration+redeployment, and other things.
> The plugin archetypes and their installation will be a followon
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