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https://issues.apache.org/jira/browse/COMDEV-451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17523404#comment-17523404
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Eric Liu commented on COMDEV-451:
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[~tzssangglass], [~bumurzokov], [~shun666], what is your take on this? I think
OSGI will be lower priority than supporting plain JAR hotloading and other
language. Although OSGI brings the capability of hot-swap and versioning of
modules, it brings an extra layer of complexity and more dependency for the
runner.
> Apache APISIX: Java Plugin Runner Improvement
> ---------------------------------------------
>
> Key: COMDEV-451
> URL: https://issues.apache.org/jira/browse/COMDEV-451
> Project: Community Development
> Issue Type: New Feature
> Components: GSoC/Mentoring ideas
> Reporter: Bobur Umurzokov
> Priority: Major
> Labels: APISIX, full-time, gsoc2022
>
> *Background:*
>
> At the moment, the Java runner plugin requires you to use an existing
> template project and change it according to one’s needs.
> *Task:*
> Improve developer experience on the existing Java plugin runner so that we
> can attract and increase the number of users from the Java community.
> *Limitations:*
> * The architecture doesn’t manage multiple plugins. All need to be set in
> the same project
> * The standard Java unit of deployment is the JAR.
> * The plugin doesn’t allow for other widespread JVM-based languages
> ({_}e.g.{_}, Scala, Kotlin, Clojure, Groovy). Though it would be technically
> feasible, we would need to change the template’s language
> *Requirements:*
> The new plugin runner:
> * MUST use the JAR as the unit of deployment
> * MUST not require the usage of a project template
> * MAY require the plugin to follow a certain class hierarchy ({_}i.e.{_},
> extends JavaPlugin)
> * MAY use a more specific format to enforce a structure
> * MUST allow multiple plugins to be deployed
> * MUST use isolated classloader for each plugin
> * MUST allow any JVM-compatible bytecode to run, whatever the language it
> was generated from
> * MAY allow hot reloading of Java plugins
> * MAY require a single JAR per plugin (to ease the classpath management of
> shared libraries)
> * MUST define a minimum JVM version
>
> *Difficulty:* Normal
> *Project size:* ~350 hours.
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