kafka 学习笔记（四）之Python客户端

今天看看Python客户端。

代码在github上，和以前一样，我们用github上写好的代码进行测试

https://github.com/mumrah/kafka-python

pip install git+git://github.com/mumrah/kafka-python

先确保机器上已经安装了python

输入命令：python

[root@localhost kafka-python]# python
Python 2.6.6 (r266:84292, Jan 22 2014, 09:42:36)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>

先来使用Producer

>>> from kafka import KafkaClient, SimpleProducer, SimpleConsumer

>>> kafka = KafkaClient("localhost:9092")

producer = SimpleProducer(kafka)

producer.send_messages("test1","Hello world!")

值得注意的是，Python客户端不需要想Java客户端一样连接zookeeper，Python客户端的运行和Java版的是两个project，所以方法不一样。

用kafka自带的consumer console，我们可以看到输出的message

同样，Python客户端也有一些可控的参数，例如是否同步：

producer = SimpleProducer(kafka,async=True)

producer = SimpleProducer(kafka,req_acks=SimpleProducer.ACK_AFTER_LOCAL_WRITE) 

还可以获得response，例如

response = producer.send_messages("test1","Hello world!")

response[0].offset

得到offset

再看看Consumer

consumer = SimpleConsumer(kafka,"python","test1")

for msg in consumer:

print(msg)

结果如图：

然后让我们优雅的退出

kafka.close()

exit()

Kafka 的Python客户端介绍完了，enjoy！