Hotswapping

Advanced, instant, auto detectable hot-swapping for minecraft / spigot / paper / plugins

Setup

• Software needed:
  • https://github.com/JetBrains/JetBrainsRuntime/releases/
  • http://hotswapagent.org/
• Tools
  • SSH connection / tunnel setup
  • Full IDE
  • Reboot scripts
  • Deploy scripts
• Automatic detection needs custom implementation dependent on plugin
  • Based on Plugin-System from hotswapagent listening for @OnClassLoadEvent(classNameRegexp = ".*", events = REDEFINE)

Conceptual

1. Run & Deploy a plugin on a remote minecraft server
2. Connect IDE to service
3. Change code on the fly
4. See changes instantly after CTRL+S is pressed in the IDE for a given file

Keep in mind

• Hotswapagent does not always work
• Anonymous classes cause cancer
• Running same versions essential
• Make sure hotswap-agent-core.jar is in jbrsdk/lib/hotswap AND in mc-server libs
• HOTSWAPAGENT='-XX:HotswapAgent=core'
• REDEFINITION='-XX:+AllowEnhancedClassRedefinition -XX:+AllowRedefinitionToAddDeleteMethods'
• EXPERIMENTAL='--enable-preview -XX:+UnlockExperimentalVMOptions'