3 Commits

Author	SHA1	Message	Date
Brian Warner	caabb3510c	add OneShotObserver and SequenceObserver, with tests ... This factors out the various "give me a Deferred for an value that may or may not eventually be successfully generated" routines in _DeferredWormhole. It uses an eventual-send to fire the Deferreds to avoid plan-coordination hazards when the attached callbacks then call back into the Wormhole object before the rest of the state transition has finished.	2018-02-26 17:50:40 -08:00
Brian Warner	e3964cd797	rearrange source tree	2015-02-15 09:29:28 -08:00
Brian Warner	3ddfac3eeb	copy eventual.py/observer.py from Foolscap	2015-02-10 18:34:34 -08:00