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An example of a plugin for Johann

Project description

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Johann Plugin Example

This repository is an example "plugin" for Johann consisting of the following:

  • Celery tasks which can be used in Johann Scores both inside and outside this plugin
  • Plugin-specific Scores that encode new scenarios/experiments
  • Plugin-specific configuration variables
  • Additions to Johann's core configuration variables
  • Plugin-specific pip dependencies

This project does not contain, but the Johann plugin system also supports:

  • Python modules that add new capabilities to Johann (e.g., an additional host control mechanism such as SSH or the VMware API)

Structure of a Johann plugin

In order to keep the Johann plugin ecosystem consistent and compatible:

  • Plugin repositories should be named johann_extension_name , e.g., johann_plugin_example
  • Plugins must provide a single package named johann_extension_name, e.g., johann_plugin_example
  • Plugins must create pypi-style distributions that can be installed via pip
  • Any Score files must be included in the distribution (e.g., via, and should be contained in a scores subfolder of the package
  • It is strongly recommended that any publicly available plugins be BSD or MIT licensed
  • Plugins should support the same versions of Python as Johann, namely Python 3.6+
  • Plugin repositories should utilize the Developer Certificate of Origin (DCO) for each commit
    • This can be accomplished via the -s flag to git commit

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