The new system is backward compatible and will load older style plugins.
The new plugin framework allows plugins to track their dependencies, and
will auto-enable plugins as needed.
Dependencies are tracked via a class-level set named `dependencies` in
each plugin.
Plugin names are no longer tightly coupled with the plugin class name,
Pso EP8 style class names may be used.
Disabling plugins is now allowed, but ensuring proper cleanup is left to
the plugin implementation.
The use of a `post_init()` method is no longer needed for new style
plugins, but plugins following the old style will still require a
`post_init()` method.
Setting self.reconnect_max_attempts to a non-None value will limit
the number of times a connection attempt will be made before quiting
and raising a 'connection_failed' event.
The post_init() system can only reliably handle a single layer
of dependencies between plugins, but PEP plugins with XEP-0115
exceed that limit and plugins can be post_init'ed out of order. To
resolve this, we will special case XEP-0115 to be post_init'ed
first until the new plugin system with dependency tracking is
stable.
Publishes, retractions, purges, and deletions now raise the events:
- pubsub_publish
- pubsub_retract
- pubsub_purge
- pubsub_delete
In addition, custom events may be raised based on the node that
generated the notification. For example:
xmpp['xep_0060'].map_node_event('http://jabber.org/protocol/tune',
'user_tune')
will allow for using the events:
- user_tune_publish
- user_tune_retract
- user_tune_purge
- user_tune_delete
This was XEP-0237, but is now part of RFC 6121.
Roster backends should now expose two additional methods:
version(jid):
Return the version of the given JID's roster.
set_version(jid, version):
Update the version of the given JID's roster.
A new state field will be passed to the backend if an item
has been marked for removal. This is 'removed' which will
be set to True.
Each state element must have its own stanza class now. A stanza class
with an empty name field causes errors in ElementTree, even though
it works fine with cElementTree.
