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https://issues.apache.org/jira/browse/METRON-777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16068236#comment-16068236
 ] 

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_r124780191
  
    --- Diff: 
metron-maven-archetypes/metron-maven-parser-extension-archetype/src/main/resources/archetype-resources/metron-parser-__parserName__-bundle/pom.xml
 ---
    @@ -0,0 +1,53 @@
    +<?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>${groupId}</groupId>
    +        <artifactId>${rootArtifactId}</artifactId>
    +        <version>${version}</version>
    +    </parent>
    +
    +    <artifactId>metron-parser-${parserName}-bundle</artifactId>
    +    <version>${version}</version>
    +    <name>metron-parser-${parserName}-bundle</name>
    +    <packaging>bundle</packaging>
    +    <properties>
    +        <maven.javadoc.skip>true</maven.javadoc.skip>
    +        <source.skip>false</source.skip>
    +    </properties>
    +
    +    <dependencies>
    +        <dependency>
    +            <groupId>${groupId}</groupId>
    +            <artifactId>metron-parser-${parserName}</artifactId>
    +            <version>${version}</version>
    +        </dependency>
    +    </dependencies>
    +
    +    <build>
    +        <plugins>
    +            <plugin>
    +                <groupId>org.apache.metron</groupId>
    +                <artifactId>bundles-maven-plugin</artifactId>
    +                <version>${metronVersion}</version>
    +                <extensions>true</extensions>
    +            </plugin>
    +        </plugins>
    +    </build>
    +</project>
    --- End diff --
    
    awesome find!  thanks - all taken care of.  Let me know if it resolves 3.5?


> 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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