kafka restful api功能介绍与使用
2021-07-12 03:08
标签：ESS value bytes response replica cat osi 技术分享 实现 采用confluent kafka-rest proxy实现kafka restful service时候，通过http协议数据传输，需要注意的是采用了base64编码（或者称之为加密），如果消息再post之前不采用base64处理将会出现：服务端消息乱码、程序报错等，因此正常的处理流程是： kafka restful api功能介绍与使用 标签：ESS value bytes response replica cat osi 技术分享 实现 原文地址：https://www.cnblogs.com/xnchll/p/9618432.html
1.先对待post的消息做UTF-8统一处理
2.采用base64编码包处理消息s=‘Kafka,hi‘
ad="hi,kafka,i‘m xnchall"
aa=ad.encode()#UTF-8统一处理
print(aa)
b64=base64.b64encode(ad.encode())#base64编码包统一处理
POST /topics/(string:topic_name)
data={"records":[
{
"key":"a2V5",
"value":"Y29uZmx1ZW50"
},
{
"value":"a2Fma2E=",
"partition":1
},
{
"value":"bG9ncw=="
}
]}
data1={"records":[{"value":"5bCK5pWs55qE5a6i5oi35oKo5aW977yMaGkga2Fma2EsIGknbSB4bmNoYWxs"}]}
header={"Content-Type":"application/vnd.kafka.v1+json"}
r=requests.post(url=url,json=data,headers=header)
r=requests.post(url=url,json=data1,headers=header)
POST /topics/(string:topic_name)/partitions/(int:partition_id)
ad="hi kafka,i‘m xnchall"
url11="http://192.168.160.101:8082/topics/test_kfk_lk/partitions/1"
data2={"records":[{"value":(base64.b64encode(ad.encode())).decode()}]}
print(data2)
r2=requests.post(url=url11,json=data2,headers=header)
print(r2)
print(r2.content)
POST /consumers/(string:group_name)
url3="http://192.168.160.101:8082/consumers/my_group"
data3={
"id":"my_consumer1",
"format":"binary",
"auto.offset.reset":"smallest",
"auto.commit.enable":"false"
}
r3=requests.post(url=url3,json=data3,headers=header)
POST /consumers/(string:group_name)/instances/(string:instance)/offsets
url4="http://192.168.160.101:8082/consumers/my_group/instances/my_consumer1/offsets"
r4=requests.post(url=url4,headers=header)
GET /consumers/(string:group_name)/instances/(string:instance)/topics/(string:topic_name)
url_get2="http://192.168.160.101:8082/consumers/my_group/instances/my_consumer1/topics/test_kfk_lk"
rr2=requests.get(url=url_get2,headers=header)#,params={"timeout":3000000}
print(rr2)
print(rr2.content)
print(rr2.text)
DELETE /consumers/(string:group_name)/instances/(string:instance)
#url_del="http://192.168.160.101:8082/consumers/test_kfk_lk/instances/my_consumer"
#d1=requests.delete(url_del)#删除消费者实例
#print(d1)
GET /topics/(string:topic_name)/partitions/(int:partition_id)/messages?offset=(int)[&count=(int)]
Fetch Response v1 only contains message format v0.
Fetch Response v2 might either contain message format v0 or message format v1.
Possible Error Codes
* OFFSET_OUT_OF_RANGE (1)
* UNKNOWN_TOPIC_OR_PARTITION (3)
* NOT_LEADER_FOR_PARTITION (6)
* REPLICA_NOT_AVAILABLE (9)
* UNKNOWN (-1)
url_p="http://192.168.160.101:8082/topics/test_kfk/partitions/0/messages"
rst=requests.get(url_p,headers=header,params={"offset":3,"count":2})#,"count":2})
print(rst)
print(len(rst.json()))
if(rst.status_code!=500):
For itr in rst.json():
print(base64.b64decode(itr[‘value‘]).decode())
print(rst.url)#http://192.168.160.101:8082/topics/test_kfk/partitions/0/messages?offset=3&count=2
POST /consumers/(string:group_name)/instances/(string:instance)/subscription
GET /consumers/(string:group_name)/instances/(string:instance)/assignments
GET /consumers/testgroup/instances/my_consumer/assignments HTTP/1.1
Host: proxy-instance.kafkaproxy.example.com
Accept: application/vnd.kafka.v2+json
HTTP/1.1 200 OK
Content-Type: application/vnd.kafka.v2+json
{
"partitions": [
{
"topic": "test",
"partition": 0
},
{
"topic": "test",
"partition": 1
}
]
}
POST /consumers/(string:group_name)/instances/(string:instance)/positions
POST /consumers/testgroup/instances/my_consumer/positions HTTP/1.1
Host: proxy-instance.kafkaproxy.example.com
Content-Type: application/vnd.kafka.v2+json
{
"offsets": [
{
"topic": "test",
"partition": 0,
"offset": 20
},
{
"topic": "test",
"partition": 1,
"offset": 30
}
]
}
POST /consumers/(string:group_name)/instances/(string:instance)/positions/end
POST /consumers/testgroup/instances/my_consumer/positions/end HTTP/1.1
Host: proxy-instance.kafkaproxy.example.com
Content-Type: application/vnd.kafka.v2+json
{
"partitions": [
{
"topic": "test",
"partition": 0
},
{
"topic": "test",
"partition": 1
}
]
}
GET /consumers/(string:group_name)/instances/(string:instance)/records
GET /consumers/testgroup/instances/my_consumer/records?timeout=3000&max_bytes=300000 HTTP/1.1
Host: proxy-instance.kafkaproxy.example.com
Accept: application/vnd.kafka.binary.v2+json
Example binary response:
HTTP/1.1 200 OK
Content-Type: application/vnd.kafka.binary.v2+json
[
{
"topic": "test",
"key": "a2V5",
"value": "Y29uZmx1ZW50",
"partition": 1,
"offset": 100,
},
{
"topic": "test",
"key": "a2V5",
"value": "a2Fma2E=",
"partition": 2,
"offset": 101,
}
]
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