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ASF GitHub Bot commented on METRON-777: --------------------------------------- Github user mattf-horton commented on a diff in the pull request: https://github.com/apache/metron/pull/530#discussion_r133016408 --- Diff: bundles-lib/src/main/java/org/apache/metron/bundles/ExtensionMapping.java --- @@ -0,0 +1,104 @@ +/* + * 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. + */ +package org.apache.metron.bundles; + +import org.apache.metron.bundles.bundle.BundleCoordinates; + +import java.util.*; +import java.util.function.BiFunction; + +public class ExtensionMapping { + + private final Map<String, Map<String, Set<BundleCoordinates>>> extensionNameMap = new HashMap<>(); --- End diff -- also would be good to document in comments, for future spelunkers. > 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 -- This message was sent by Atlassian JIRA (v6.4.14#64029)