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Producer/Consumer SASL auth examples (#824)
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#!/usr/bin/env python | ||
# -*- coding: utf-8 -*- | ||
# | ||
# Copyright 2020 Confluent Inc. | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
# | ||
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# | ||
# This is a simple example of the SerializingProducer using SASL authentication. | ||
# | ||
import argparse | ||
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from six.moves import input | ||
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from confluent_kafka import SerializingProducer | ||
from confluent_kafka.serialization import StringSerializer | ||
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def delivery_report(err, msg): | ||
""" | ||
Reports the failure or success of a message delivery. | ||
Args: | ||
err (KafkaError): The error that occurred on None on success. | ||
msg (Message): The message that was produced or failed. | ||
Note: | ||
In the delivery report callback the Message.key() and Message.value() | ||
will be the binary format as encoded by any configured Serializers and | ||
not the same object that was passed to produce(). | ||
If you wish to pass the original object(s) for key and value to delivery | ||
report callback we recommend a bound callback or lambda where you pass | ||
the objects along. | ||
""" | ||
if err is not None: | ||
print("Delivery failed for User record {}: {}".format(msg.key(), err)) | ||
return | ||
print('User record {} successfully produced to {} [{}] at offset {}'.format( | ||
msg.key(), msg.topic(), msg.partition(), msg.offset())) | ||
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def sasl_conf(args): | ||
sasl_mechanism = args.sasl_mechanism.upper() | ||
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sasl_conf = {'sasl.mechanism': sasl_mechanism, | ||
# Set to SASL_SSL to enable TLS support. | ||
'security.protocol': 'SASL_PLAINTEXT'} | ||
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if sasl_mechanism != 'GSSAPI': | ||
sasl_conf.update({'sasl.username': args.user_principal, | ||
'sasl.password': args.user_secret}) | ||
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if sasl_mechanism == 'GSSAPI': | ||
sasl_conf.update({'sasl.kerberos.service.name', args.broker_principal, | ||
# Keytabs are not supported on Windows. Instead the | ||
# the logged on user's credentials are used to | ||
# authenticate. | ||
'sasl.kerberos.principal', args.user_principal, | ||
'sasl.kerberos.keytab', args.user_secret}) | ||
return sasl_conf | ||
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def main(args): | ||
topic = args.topic | ||
delimiter = args.delimiter | ||
producer_conf = {'bootstrap.servers': args.bootstrap_servers, | ||
'key.serializer': StringSerializer('utf_8'), | ||
'value.serializer': StringSerializer('utf_8')} | ||
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producer_conf.update(sasl_conf(args)) | ||
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producer = SerializingProducer(producer_conf) | ||
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print("Producing records to topic {}. ^C to exit.".format(topic)) | ||
while True: | ||
# Serve on_delivery callbacks from previous calls to produce() | ||
producer.poll(0.0) | ||
try: | ||
msg_data = input(">") | ||
msg = msg_data.split(delimiter) | ||
if len(msg) == 2: | ||
producer.produce(topic=topic, key=msg[0], value=msg[1], | ||
on_delivery=delivery_report) | ||
else: | ||
producer.produce(topic=topic, value=msg[0], | ||
on_delivery=delivery_report) | ||
except KeyboardInterrupt: | ||
break | ||
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print("\nFlushing {} records...".format(len(producer))) | ||
producer.flush() | ||
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if __name__ == '__main__': | ||
parser = argparse.ArgumentParser(description="SerializingProducer" | ||
" SASL Example") | ||
parser.add_argument('-b', dest="bootstrap_servers", required=True, | ||
help="Bootstrap broker(s) (host[:port])") | ||
parser.add_argument('-t', dest="topic", default="example_producer_sasl", | ||
help="Topic name") | ||
parser.add_argument('-d', dest="delimiter", default="|", | ||
help="Key-Value delimiter. Defaults to '|'"), | ||
parser.add_argument('-m', dest="sasl_mechanism", default='PLAIN', | ||
help="SASL mechanism to use for authentication." | ||
"Defaults to PLAIN") | ||
parser.add_argument('--tls', dest="enab_tls", default=False) | ||
parser.add_argument('-u', dest="user_principal", required=True, | ||
help="Username") | ||
parser.add_argument('-s', dest="user_secret", required=True, | ||
help="Password(ignored on Windows) for PLAIN and SCRAM," | ||
" or path to keytab if GSSAPI.") | ||
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main(parser.parse_args()) |