[GEODE-669] Add CacheObserver for ShutdownAll and also let WAN to return CancelException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0-incubating.M1
• Component/s: core
• Assignee: Xiaojian Zhou
• Reporter: Xiaojian Zhou
• Created: 14/Dec/15 18:50
• Updated: 15/Jan/16 06:14
• Resolved: 15/Dec/15 19:29

Description

We need a CacheObserver for ShutdownAll.

There's chance that getRegion() returns null due to shutdownall. With that CacheObserver, it'll help the unit test.

An example is: GatewayReceiverCommand will find the region of events will be null when shutdownall is on-going. In this case, it will throw CacheDestroyedException (i.e. subclass of CancelException) instead of RegionDestroyedException.