GitHub user Randgalt opened a pull request:
https://github.com/apache/zookeeper/pull/136
[ZOOKEEPER-1416] Persistent Recursive Watch
Here is a completed implementation for a persistent, recursive watch
addition for ZK. These watches are set via a new method, `addPersistentWatch()`
and are removed via the existing watcher removal methods. Persistent, recursive
watches have these characteristics:
- Once set, they do not auto-remove when triggered
- They trigger for all event types (child, data, etc.) on the node they are
registered for and any child znode recursively.
- They are efficiently implemented by using the existing watch internals. A
new class `PathIterator` walks up the path parent-by-parent when checking if a
watcher applies.
Persistent watcher specific tests are in `PersistentWatcherTest.java`. I'd
appreciated feedback on other additional tests that should be added.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Randgalt/zookeeper ZOOKEEPER-1416
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zookeeper/pull/136.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #136
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commit 3c05c671d09e5b6df936af8f0a700995d5749e11
Author: randgalt <jor...@jordanzimmerman.com>
Date: 2016-12-25T21:36:13Z
basic work done. Needs more testing, tuning, etc.
commit ca4a000dcf294aaebd09d3118ebc62cb0783f9cc
Author: randgalt <jor...@jordanzimmerman.com>
Date: 2016-12-26T15:06:55Z
working on persistent watcher removal
commit bf13deda0b00ca67cd1fa963961d95a22634ed88
Author: randgalt <jor...@jordanzimmerman.com>
Date: 2016-12-26T17:59:04Z
Support resetting persistent watches
commit 27d8d6cd45cb6adfabf50143f6de62a371447519
Author: randgalt <jor...@jordanzimmerman.com>
Date: 2016-12-26T18:21:17Z
docs
commit 2766fb1020c600af579a0f701fa3c00ea92b7e22
Author: randgalt <jor...@jordanzimmerman.com>
Date: 2016-12-26T18:44:42Z
containsWatcher() was broken for STANDARD watchers
commit 86fa1fbcb75021179f80588a2ea46aad2127fb4e
Author: randgalt <jor...@jordanzimmerman.com>
Date: 2016-12-26T19:20:00Z
removed unused import
commit b490c84d1e56335ba66f9c56d64134886b144451
Author: randgalt <jor...@jordanzimmerman.com>
Date: 2016-12-26T19:20:08Z
Updated doc for persistent watches
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