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https://issues.apache.org/jira/browse/METRON-777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16042068#comment-16042068
 ] 

ASF GitHub Bot commented on METRON-777:
---------------------------------------

Github user ottobackwards commented on a diff in the pull request:

    https://github.com/apache/metron/pull/530#discussion_r120784563
  
    --- Diff: bundles-lib/pom.xml ---
    @@ -0,0 +1,179 @@
    +<?xml version="1.0" encoding="UTF-8"?>
    +<!--
    +  Licensed to the Apache Software
    +   Foundation (ASF) under one or more contributor license agreements. See 
the
    +   NOTICE file distributed with this work for additional information 
regarding
    +   copyright ownership. The ASF licenses this file to You under the Apache 
License,
    +   Version 2.0 (the "License"); you may not use this file except in 
compliance
    +   with the License. You may obtain a copy of the License at 
http://www.apache.org/licenses/LICENSE-2.0
    +   Unless required by applicable law or agreed to in writing, software 
distributed
    +   under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
    +   OR CONDITIONS OF ANY KIND, either express or implied. See the License 
for
    +  the specific language governing permissions and limitations under the 
License.
    +  -->
    +
    +<project xmlns="http://maven.apache.org/POM/4.0.0"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
    +         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd";>
    +    <modelVersion>4.0.0</modelVersion>
    +    <parent>
    +        <groupId>org.apache.metron</groupId>
    +        <artifactId>Metron</artifactId>
    +        <version>0.4.0</version>
    +    </parent>
    +
    +    <artifactId>bundles-lib</artifactId>
    --- End diff --
    
    In the future, we can include documentation, such that it is discoverable 
and loadable and other things ( like custom UI )


> 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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