ANN: Kazoo 0.5 (Now a pure Python client)

[Ben Bangert <be...@groovie.org>]

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

Re: ANN: Kazoo 0.5 (Now a pure Python client)

[Kiall Mac Innes <ki...@managedit.ie>]

Hah - I was only just looking at this lib today!

I've got several usages for it in mind already, keep up the good work!

Thanks,
Kiall
On Sep 6, 2012 10:52 PM, "Ben Bangert" <be...@groovie.org> wrote:

> 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