[Owncloud] Proposal for new plugin system

[Aldo "xoen" Giambelluca]

2010/7/28 Robin <icewind1991 at gmail.com>:
> Because our current plugin system isn't powerful enough for some cases, I've
> written a proposal on the wiki for a new system that would be more dynamic and
> allow for easier installation of plugins.
> http://owncloud.org/index.php/Plugin_System_Proposal
Interesting :)


PLUGIN.XML
==========
  1. I suggest to change <meta> in <info> or <information>
  2. Add <description> to <meta>
  3. Add <homepage> to <meta>
  4. Add <email> to <meta>
  5. Put all the <include> in something like <runtime>
  6. Add <uninstall> identical to <install> but for uninstallation
  7. It's important to have a version attribute into plugin
    (<plugin version="1.0">), this way it's possible to change the
    plugin.xml structure in future.
  8. Maybe we need a require child in <meta>? Something like
     <require>1.0</require>, some way to know in which versions of
     ownCloud the plugin works.

I will prefer if the filename is fixed so I know every plugin has a
`plugin.xml`.

See attachment for an example.


INSTALLATION
============
I don't like the idea to use the `plugin.xml` file to guaranty the
plugin is installed correctly.

IMHO it would be better to insert the plugin in a DB table after the
(successful) installation, see LOADING.

Of course if the `plugin.xml` version is not complatible the plugin will
not be installed (see PLUGIN.XML point 7).


LOADING
=======
IMHO, it would be better has a `oc_plugins` DB table in which there is
a row for each installed plugins.
Every row contains information on the plugin: id, enabled, name,
version, description, author, e-mail, homepage, licence and copyright.

The enabled field can be false or true, if true the plugin is loaded.
(Of course if the plugin is incompatible with the version of ownCloud
installed will not be loaded, see PLUGIN.XML point 8).



This should be flexible enough (TM), but I'm sure reading this you
will have new ideas ;).
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