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https://issues.apache.org/jira/browse/METRON-777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16118714#comment-16118714
]
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_r131981844
--- Diff:
bundles-lib/src/main/java/org/apache/metron/bundles/bundle/BundleCoordinate.java
---
@@ -0,0 +1,90 @@
+/*
+ * 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.bundle;
+
+/**
+ * The coordinates of a bundle (group, artifact, version).
+ */
+public class BundleCoordinate {
+
+ public static final String DEFAULT_GROUP = "default";
+ public static final String DEFAULT_VERSION = "unversioned";
+
+ public static final BundleCoordinate UNKNOWN_COORDINATE = new
BundleCoordinate(DEFAULT_GROUP, "unknown", DEFAULT_VERSION);
+
+ private final String group;
+ private final String id;
+ private final String version;
+ private final String coordinate;
+
+ public BundleCoordinate(final String group, final String id, final
String version) {
+ this.group = isBlank(group) ? DEFAULT_GROUP : group;
+ this.id = id;
+ this.version = isBlank(version) ? DEFAULT_VERSION : version;
+
+ if (isBlank(id)) {
+ throw new IllegalStateException("Id is required for
BundleCoordinate");
+ }
+
+ this.coordinate = this.group + ":" + this.id + ":" + this.version;
--- End diff --
ok
> 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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