def on_circuit_built(self, callback):
"""
:param callback: will be called (with 'circuit' instance) when a
CIRC BUILT event happens
"""
listener = CircuitListenerMixin()
listener.circuit_built = callback
self.add_circuit_listener(listener)
return callback # so we can be used as a listener
def on_circuit_failed(self, callback):
"""
:param callback: will be called (with 'circuit' instance, and
arbitrary kwargs) when a CIRC FAILED event happens
"""
listener = CircuitListenerMixin()
listener.circuit_failed = callback
self.add_circuit_listener(listener)
return callback # so we can be used as a listener
def on_circuit_extend(self, callback):
"""
:param callback: will be called (with 'circuit' and 'router'
instances) when a CIRC EXTENDED event happens
"""
listener = CircuitListenerMixin()
listener.circuit_extend = callback
self.add_circuit_listener(listener)
return callback # so we can be used as a listener
def test_listener_mixin(self):
listener = CircuitListenerMixin()
from zope.interface.verify import verifyObject
self.assertTrue(verifyObject(ICircuitListener, listener))
# call all the methods with None for each arg. This is mostly
# just to gratuitously increase test coverage, but also
# serves to ensure these methods don't just blow up
for (methodname, desc) in ICircuitListener.namesAndDescriptions():
method = getattr(listener, methodname)
args = [None] * len(desc.positional)
method(*args)