tree fa2ea7e6cd137a1ffa6b74c533379cd1e6784463
parent 08e35dedc2ebf9c8863b0cb136c9e7c9a150e1a0
author Molly Gao <31704180+mgao0@users.noreply.github.com> 1646949933 -0800
committer Junkai Xue <junkai.xue@gmail.com> 1649373981 -0700

Add event handler and event listener interface (#1976)

This commit creates a skeleton for event handling framework and adds the following classes:
CloudEventListener interface
CloudEventHandler class
CloudEventHandlerFactory class