Zktools

Latest version: v0.2.1

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0.3

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Changes
*******

- Use the Zookeeper-provided mtime of a node as the last_modified
attribute, instead of client specific time.time()
- Use GUID from new Zookeeper recipe to handle connection loss which
still results in a created node.
- Add safe-call to ensure that commands run reliably in the face of a
connection loss exception during their call, and have lock code run
in a separate thread to ensure it doesn't deadlock the ZK event
thread.
- Removed zc-zookeeper-static requirement as some OS distributions include
the python zookeeper binding as a system package.

Bugfixes
********

- Fix ZkNode issues with dead-locks due to having locking code inside
watch callbacks.

Backward Incompatibilities
**************************

- Removed ZkNodeDict which establishes a questionable amount of watches on
the server. Setting too many watches has multiple drawbacks, larger values
should be stored as JSON in a single node.

0.2.1

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- Fixed packaging bug.

0.2

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Changes
*******

- Added context manager return to lock to allow use of the 'with'
statement.
- Refactored to use zc.zk ZooKeeper library for higher level Zookeeper
abstraction with automatic watch re-establishment.

Features
********

- Node object to retrieve ZNode data from Zookeeper and keep it up
to date.
- Node objects can have data and children subscribers.
- NodeDict object that maps a shallow tree (one level of children)
into a dict-like object.

Backward Incompatibilities
**************************

- SharedZkLock has been refactored into ZkWriteLock and ZkReadLock.
- ``revoked`` is a property of Locks, not a method.
- ZkConnection is gone, lock objects, ZkNode, and ZkNodeDict all expect
zc.zk ZooKeeper instances.

0.1

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Features
********

- Lock implementation, with revokable shared locks.
- Zookeeper connection object with automatic reconnect.

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