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tutor/docs/index.rst
Régis Behmo 15b219e235 feat: migrate to plugins.v1 with filters & actions
This is a very large refactoring which aims at making Tutor both more
extendable and more generic. Historically, the Tutor plugin system was
designed as an ad-hoc solution to allow developers to modify their own
Open edX platforms without having to fork Tutor. The plugin API was
simple, but limited, because of its ad-hoc nature. As a consequence,
there were many things that plugin developers could not do, such as
extending different parts of the CLI or adding custom template filters.

Here, we refactor the whole codebase to make use of a generic plugin
system. This system was inspired by the Wordpress plugin API and the
Open edX "hooks and filters" API. The various components are added to a
small core thanks to a set of actions and filters. Actions are callback
functions that can be triggered at different points of the application
lifecycle. Filters are functions that modify some data. Both actions and
filters are collectively named as "hooks". Hooks can optionally be
created within a certain context, which makes it easier to keep track of
which application created which callback.

This new hooks system allows us to provide a Python API that developers
can use to extend their applications. The API reference is added to the
documentation, along with a new plugin development tutorial.

The plugin v0 API remains supported for backward compatibility of
existing plugins.

Done:
- Do not load commands from plugins which are not enabled.
- Load enabled plugins once on start.
- Implement contexts for actions and filters, which allow us to keep track of
  the source of every hook.
- Migrate patches
- Migrate commands
- Migrate plugin detection
- Migrate templates_root
- Migrate config
- Migrate template environment globals and filters
- Migrate hooks to tasks
- Generate hook documentation
- Generate patch reference documentation
- Add the concept of action priority

Close #499.
2022-04-15 15:30:54 +02:00

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.. include:: ../README.rst
:start-after: _readme_intro_start:
:end-before: _readme_intro_end:
.. image:: ./img/quickstart.gif
:alt: Tutor local quickstart
:target: https://terminalizer.com/view/91b0bfdd557
----------------------------------
.. include:: testimonials.rst
----------------------------------
.. include:: quickstart.rst
:start-line: 1
.. toctree::
:maxdepth: 2
:caption: User guide
gettingstarted
run
configuration
plugins/index
reference/index
tutorials/index
troubleshooting
tutor
faq
.. toctree::
:maxdepth: 2
:caption: Project links
Source code <https://github.com/overhangio/tutor>
Community forums <https://discuss.overhang.io>
Pypi releases <https://pypi.org/project/tutor>
Changelog <https://github.com/overhangio/tutor/blob/master/CHANGELOG.md>
Source code
-----------
The complete source code for Tutor is available on Github: https://github.com/overhangio/tutor
.. include:: ../README.rst
:start-after: _readme_support_start:
:end-before: _readme_support_end:
.. include:: ../README.rst
:start-after: _readme_contributing_start:
:end-before: _readme_contributing_end:
License
-------
This work is licensed under the terms of the `GNU Affero General Public License (AGPL) <https://github.com/overhangio/tutor/blob/master/LICENSE.txt>`_.
The AGPL license covers the Tutor code, including the Dockerfiles, but not the content of the Docker images which can be downloaded from https://hub.docker.com. Software other than Tutor provided with the docker images retain their original license.
The Tutor plugin and hooks system is licensed under the terms of the `Apache License, Version 2.0 <https://opensource.org/licenses/Apache-2.0>`__.
© 2021 Tutor is a registered trademark of SASU NULI NULI. All Rights Reserved.