tree bedf0dcd35479c4904753fbecb4406acd542132d
parent a006486a4f61fd64fcdf07eac216c6568be189e1
author Aaron Zinman <aaron@azinman.com> 1464908772 -0700
committer Aaron Zinman <zinman@google.com> 1464933998 +0000

swift: Support watch API

Implements Database.watch, and adds an optional timeout variant of
Stream.next to prevent blocking forever (in the case of a watch
that never recieves an event).

The unit tests are not passing for the onChange event -- something
seems to be broken in Go currently.

Change-Id: I6ab82a54605c5259eaec6fdd77e124e16fcbcb7e