Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
Zookeeper >> mail # user >> ANN: Kazoo 0.5 (Now a pure Python client)


Copy link to this message
-
ANN: Kazoo 0.5 (Now a pure Python client)
Kazoo 0.5 has been released today, which features a refactor into a pure Python client with no C lib dependency (based on jute and the pookeeper code written by Alan D. Cabrera). It stays faithful to the state transitions of the C lib, without many of the gymnastics needed to handle zhandle's and such properly.

We're aiming to implement Zookeeper 3.4 features such as Transactions/Multi and Read-Only mode in the next release.

It can be installed off Pypi. Complete and thorough docs available at http://kazoo.readthedocs.org

Changelog:

0.5 (9/6/2012)
--------------

Skipping a version to reflect the magnitude of the change. Kazoo is now a pure
Python client with no C bindings. This release should run without a problem
on alternate Python implementations such as PyPy and Jython. Porting to Python
3 in the future should also be much easier.

Documentation
*************

- Docs have been restructured to handle the new classes and locations of the
  methods from the pure Python refactor.

Bug Handling
************

This change may introduce new bugs, however there is no longer the possibility
of a complete Python segfault due to errors in the C library and/or the C
binding.

- Possible segfaults from the C lib are gone.
- Password mangling due to the C lib is gone.
- The party recipes didn't set their participating flag to False after
  leaving.

Features
********

- New `client.command` and `client.server_version` API, exposing Zookeeper's
  four letter commands and giving access to structured version information.
- Added 'include_data' option for get_children to include the node's Stat
  object.
- Substantial increase in logging data with debug mode. All correspondence with
  the Zookeeper server can now be seen to help in debugging.

API Changes
***********

- The testing helpers have been moved from `testing.__init__` into a
  `testing.harness` module. The official API's of `KazooTestCase` and
  `KazooTestHarness` can still be directly imported from `testing`.
- The kazoo.handlers.util module was removed.
- Backwards compatible exception class aliases are provided for now in kazoo
  exceptions for the prior C exception names.
- Unicode strings now work fine for node names and are properly converted to
  and from unicode objects.
- The data value argument for the create and create_async methods of the
  client was made optional and defaults to an empty byte string. The data
  value must be a byte string. Unicode values are no longer allowed and
  will raise a TypeError.
Cheers,
Ben
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB