def _delete_callback(self, callback, resource_type):
try:
self._callbacks[resource_type].remove(callback)
if not self._callbacks[resource_type]:
del self._callbacks[resource_type]
except KeyError:
raise rpc_exc.CallbackNotFound(resource_type=resource_type)
def get_callbacks(self, resource_type):
"""Return the callback if found, None otherwise.
:param resource_type: must be a valid resource type.
"""
_validate_resource_type(resource_type)
callbacks = self._callbacks[resource_type]
if not callbacks:
raise rpc_exc.CallbackNotFound(resource_type=resource_type)
return callbacks
def get_callback(self, resource_type):
_validate_resource_type(resource_type)
try:
return self._callbacks[resource_type]
except KeyError:
raise rpc_exc.CallbackNotFound(resource_type=resource_type)