Since the XEP-0086 plugin auto adds error code values,
it must be reliably loaded or unloaded when certain tests
are run so that stanzas may be matched. In this case, we
ensure that the plugin is used.
Since camelcase names are aliased to the underscored name at startup,
if the underscored version is replaced later, the camelCase name does
not reflect the change.
Each interface, say foo, may be overridden in three ways:
set_foo
get_foo
del_foo
To declare an override in a plugin, add the class field
overrides as so:
overrides = ['set_foo', 'del_foo']
Each override must have a matching set_foo(), etc method
for implementing the new behaviour.
To enable the overrides for a particular parent stanza,
pass the option overrides=True to register_stanza_plugin.
register_stanza_plugin(Stanza, Plugin, overrides=True)
Example code:
class Test(ElementBase):
name = 'test'
namespace = 'testing'
interfaces = set(('foo', 'bar'))
sub_interfaces = set(('bar',))
class TestOverride(ElementBase):
name = 'test-override'
namespace = 'testing'
plugin_attrib = 'override'
interfaces = set(('foo',))
overrides = ['set_foo']
def setup(self, xml):
# Don't include an XML element in the parent stanza
# since we're adding just an attribute.
# If adding a regular subelement, no need to do this.
self.xml = ET.Element('')
def set_foo(self, value):
print("overrides!")
self.parent()._set_attr('foo', 'override-%s' % value)
register_stanza_plugin(Test, TestOverride, overrides=True)
Example usage:
>>> t = TestStanza()
>>> t['foo'] = 'bar'
>>> t['foo']
'override-bar'
Backward incompatibility alert!
Please see examples/adhoc_provider.py for how to use the new
plugin implementation, or the test examples in the files
tests/test_stream_xep_0050.py and tests/test_stanza_xep_0050.py.
Major changes:
- May now have zero-step commands. Useful if a command is
intended to be a dynamic status report that doesn't
require any user input.
- May use payloads other than data forms, such as a
completely custom stanza type.
- May include multiple payload items, such as multiple
data forms, or a form and a custom stanza type.
- Includes a command user API for calling adhoc commands
on remote agents and managing the workflow.
- Added support for note elements.
Todo:
- Add prev action support.
You may use register_plugin('old_0050') to continue using the
previous XEP-0050 implementation.
ElementBase instances will display the top-most namespace by default.
StanzaBase instances will NOT display the top-most namespace by default.
May pass True or False to __str__ to override.
