python环境

     Python版本：python3.6

    kafka第三方库安装方式：pip install kafka

    操作系统：window 10

1.生产者连接发送消息代码

# -*- coding: utf-8 -*-
import json
from kafka import KafkaProducer
producer = KafkaProducer(bootstrap_servers='10.10.14.227:9092')
msg_dict = {
    "interval": 10,
    "producer": {
        "name": "producer 1",
        "host": "10.10.10.1",
        "user": "root",
        "password": "root"
    },
    "cpu": "33.5%",
    "mem": "77%",
    "msg": "Hello kafka"
}
msg = json.dumps(msg_dict)
producer.send('mykafka', bytes(msg, encoding='utf-8'), partition=0)
producer.close()
print("success")

运行结果：

success

2.消费者代码

from kafka import KafkaConsumer

consumer = KafkaConsumer('mykafka', group_id='20190603', bootstrap_servers=['10.10.14.227:9092'])
for msg in consumer:
    result = "%s:%d:%d: key=%s value=%s" % (msg.topic, msg.partition, msg.offset, msg.key, msg.value)
    print(result)

运行结果：

mykafka:0:10: key=None value=b'{"interval": 10, "producer": {"name": "producer 1", "host": "10.10.10.1", "user": "root", "password": "root"}, "cpu": "33.5%", "mem": "77%", "msg": "Hello kafka"}'

3.消费者定时拉取数据消费

from kafka import KafkaConsumer
import time

consumer = KafkaConsumer(group_id='20190603', bootstrap_servers=['10.10.14.227:9092'])
consumer.subscribe(topics=('mykafka',))
index = 0
while True:
    msgs = consumer.poll(timeout_ms=5)  # 从kafka获取消息
    if len(msgs) > 0:
        for msg in msgs:
            msgss = msgs[msg]
        for msg in msgss:
            result = "%s:%d:%d: key=%s value=%s" % (msg.topic, msg.partition, msg.offset, msg.key, msg.value)
            print(result)
    time.sleep(3)

运行结果：

mykafka:0:29: key=None value=b'{"interval": 10, "producer": {"name": "producer 1", "host": "10.10.10.1", "user": "root", "password": "root"}, "cpu": "33.5%", "mem": "77%", "msg": "Hello kafka"}'
mykafka:0:30: key=None value=b'{"interval": 10, "producer": {"name": "producer 1", "host": "10.10.10.1", "user": "root", "password": "root"}, "cpu": "33.5%", "mem": "77%", "msg": "Hello kafka"}'
mykafka:0:31: key=None value=b'{"interval": 10, "producer": {"name": "producer 1", "host": "10.10.10.1", "user": "root", "password": "root"}, "cpu": "33.5%", "mem": "77%", "msg": "Hello kafka"}'