the client watch impl

The client subscribes to store update notifications via a go
channel. The go channel is only used to send a bit 'there is
a watch log update'. Whenever a client sees the notification,
it scans through the watch log for new updates (like the sync
watcher does), filters out unnecessary or inaccessible log
records and sends the result to the client.

Change-Id: I143c1228d3b0808f1910c9b6dc17b19758dcf1de
14 files changed
tree: 38927a5c34819ea96e34270173230669b3458c28
  1. v23/
  2. x/
  3. .gitignore
  4. AUTHORS
  5. CONTRIBUTORS
  6. LICENSE
  7. PATENTS
  8. VERSION