How to programmatically get schema from confluent schema registry in Python

问题

As of now i am doing something like this reading avsc file to get schema

value_schema = avro.load('client.avsc')

can i do something to get schema from confluent schema registry using topic-name?

i found one way but didn't figure out how to use it.

https://github.com/marcosschroh/python-schema-registry-client

回答1:

Using confluent-kafka-python

from confluent_kafka.avro.cached_schema_registry_client import CachedSchemaRegistryClient

sr = CachedSchemaRegistryClient({
    'url': 'http://localhost:8081',
    'ssl.certificate.location': '/path/to/cert',  # optional
    'ssl.key.location': '/path/to/key'  # optional
})

value_schema = sr.get_latest_schema("orders-value")[1]
key_schema= sr.get_latest_schema("orders-key")[1]

Using SchemaRegistryClient

Getting schema by subject name

from schema_registry.client import SchemaRegistryClient


sr = SchemaRegistryClient('localhost:8081')
my_schema = sr.get_schema(subject='mySubject', version='latest')

Getting schema by ID

from schema_registry.client import SchemaRegistryClient


sr = SchemaRegistryClient('localhost:8081')
my_schema = sr.get_by_id(schema_id=1)

回答2:

I did like this it worked for me

     import requests
     import os

     SCHEMA_REGISTRY_URL = os.getenv('SCHEMA_REGISTRY_URL');
     print("SCHEMA_REGISTRY_URL: ", SCHEMA_REGISTRY_URL)
     URL = SCHEMA_REGISTRY_URL + '/subjects/' + topic + '/versions/latest/schema'
     r = requests.get(url=URL)
     schema = r.json()


     print("Schema From Schema Registry ==========================>>")
     print("Schema: ", schema)

来源：https://stackoverflow.com/questions/60467878/how-to-programmatically-get-schema-from-confluent-schema-registry-in-python

标签

python

apache-kafka

avro

confluent-schema-registry