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I am planning to use Python kazoo library for Zookeeper. It's all about Python question here not zookeeper at all I guess meaning how to use Python kazoo properly..
I am totally new to python so I have no idea how to get going and how to use kazoo to connect with zookeeper.
This is the document I was reading to start using kazoo for Zookeeper.
http://kazoo.readthedocs.org/en/latest/install.html
In that wiki, they have asked to install kazoo. And they are using some pip command for that?
What does pip do here? And I am currently using windows so I have cygwin installed and python installed as well. I am using Python 2.7.3
host@D-SJC-00542612 ~
$ python
Python 2.7.3 (default, Dec 18 2012, 13:50:09)
[GCC 4.5.3] on cygwin
Now what I did is - I copied this command exactly as it is from the above website - pip install kazoo and ran it on my cygwin command prompt.
host@D-SJC-00542612 ~
$ pip install kazoo
Downloading/unpacking kazoo
Running setup.py egg_info for package kazoo
warning: no previously-included files found matching '.gitignore'
warning: no previously-included files found matching '.travis.yml'
warning: no previously-included files found matching 'Makefile'
warning: no previously-included files found matching 'run_failure.py'
warning: no previously-included files matching '*' found under directory 'sw'
warning: no previously-included files matching '*pyc' found anywhere in distribution
warning: no previously-included files matching '*pyo' found anywhere in distribution
Downloading/unpacking zope.interface>=3.8.0 (from kazoo)
Running setup.py egg_info for package zope.interface
warning: no previously-included files matching '*.dll' found anywhere in distribution
warning: no previously-included files matching '*.pyc' found anywhere in distribution
warning: no previously-included files matching '*.pyo' found anywhere in distribution
warning: no previously-included files matching '*.so' found anywhere in distribution
Requirement already satisfied (use --upgrade to upgrade): distribute in c:\python27\lib\site-packages (from zope.interface>=3.8.0->kazoo)
Installing collected packages: kazoo, zope.interface
Running setup.py install for kazoo
warning: no previously-included files found matching '.gitignore'
warning: no previously-included files found matching '.travis.yml'
warning: no previously-included files found matching 'Makefile'
warning: no previously-included files found matching 'run_failure.py'
warning: no previously-included files matching '*' found under directory 'sw'
warning: no previously-included files matching '*pyc' found anywhere in distribution
warning: no previously-included files matching '*pyo' found anywhere in distribution
Running setup.py install for zope.interface
warning: no previously-included files matching '*.dll' found anywhere in distribution
warning: no previously-included files matching '*.pyc' found anywhere in distribution
warning: no previously-included files matching '*.pyo' found anywhere in distribution
warning: no previously-included files matching '*.so' found anywhere in distribution
building 'zope.interface._zope_interface_coptimizations' extension
********************************************************************************
WARNING:
An optional code optimization (C extension) could not be compiled.
Optimizations for this package will not be available!
()
Unable to find vcvarsall.bat
********************************************************************************
Skipping installation of C:\Python27\Lib\site-packages\zope\__init__.py (namespace package)
Installing C:\Python27\Lib\site-packages\zope.interface-4.0.5-py2.7-nspkg.pth
Successfully installed kazoo zope.interface
Cleaning up...
Does it got installed properly? Now I can start writing code in python to connect with zookeeper?
Sorry for asking all these dumb questions as I don't have any background with python so learning little bit here..
It's all about Python question here not zookeeper at all I guess..
327
Kazoo is a Python library designed to make working with Zookeeper a more hassle-free experience that is less prone to errors. Kazoo features: A wide range of recipe implementations, like Lock, Election or Queue. Data and Children Watchers. Simplified Zookeeper connection state tracking.
class kazoo.client.KazooClient[source] An Apache Zookeeper Python client supporting alternate callback handlers and high-level functionality. Watch functions registered with this class will not get session events, unlike the default Zookeeper watches.
ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. All of these kinds of services are used in some form or another by distributed applications.
pip is common way to install packages. It queries and downloads the packages from pypi.
Kazoo has been installed as per the log statements. Give it a try.
you should be able to find the package at where python is installed\lib\site-packages\kazoo.
You should try to load (import) the package without errors:
from kazoo.client import KazooClient
After you have started the zookeeper. Your zookeeper configuration will have the client port details.
tickTime=2000
dataDir=...../zookeeperdata/cluster/server1/data
clientPort=2181
initLimit=5
Use that to connect to zookeeper.
# Create a client and start it
zk = KazooClient(hosts='127.0.0.1:2181')
zk.start()
# Now you can do the regular zookepper API calls
# Ensure some paths are created required by your application
zk.ensure_path("/app/someservice")
# In the end, stop it
zk.stop()
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