deb1da5f57
storage: add watch ID to identify watchings
...
One watcher includes multiple watchings, and their events are
sent out through one channel. For the received event, user would like to
know which watching it belongs to.
Introduce a watch ID. When watching on some key, user will get a watch
ID. The watch ID is attached to all events that is observed by this
watch.
2015-11-21 11:19:17 -08:00
6e5eb03544
storage: move watcherGauge to watchable_store
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watcherGauge should be increased everytime we creates Watcher, not per watch
method call.
2015-11-04 13:17:47 -08:00
4ebf28aa2e
storage: add metrics to watcher
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This adds metrics to watcher, and changes some order in MustRegister function
calls in init (same order that we define the gauges).
2015-11-04 13:01:52 -08:00
a1129dd5a5
storage: support multiple watching per watcher
...
We want to support multiple watchings per one watcher chan. Then
we can have one single go routine to watch multiple keys/prefixs.
2015-11-03 12:36:11 -08:00
f71bcfa8ce
storage: move watcher interface into watcher.go
2015-10-28 21:10:58 -07:00
6556bf1643
storage: remove the endRev of watcher
2015-10-17 15:59:49 -07:00
7848ac3979
*: add missing license headers
2015-09-15 14:09:01 -07:00
ec43e0a4c3
storage: introduce WatchableKV and watch feature
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WatchableKV is an interface upon KV, and supports watch feature.
2015-09-14 23:53:03 -07:00
