| |
| from __future__ import print_function |
| import threading, logging, time |
|
|
| from kafka import KafkaConsumer, KafkaProducer |
|
|
| msg_size = 524288 |
|
|
| producer_stop = threading.Event() |
| consumer_stop = threading.Event() |
|
|
| class Producer(threading.Thread): |
| big_msg = b'1' * msg_size |
|
|
| def run(self): |
| producer = KafkaProducer(bootstrap_servers='localhost:9092') |
| self.sent = 0 |
|
|
| while not producer_stop.is_set(): |
| producer.send('my-topic', self.big_msg) |
| self.sent += 1 |
| producer.flush() |
|
|
|
|
| class Consumer(threading.Thread): |
|
|
| def run(self): |
| consumer = KafkaConsumer(bootstrap_servers='localhost:9092', |
| auto_offset_reset='earliest') |
| consumer.subscribe(['my-topic']) |
| self.valid = 0 |
| self.invalid = 0 |
|
|
| for message in consumer: |
| if len(message.value) == msg_size: |
| self.valid += 1 |
| else: |
| self.invalid += 1 |
|
|
| if consumer_stop.is_set(): |
| break |
|
|
| consumer.close() |
|
|
| def main(): |
| threads = [ |
| Producer(), |
| Consumer() |
| ] |
|
|
| for t in threads: |
| t.start() |
|
|
| time.sleep(10) |
| producer_stop.set() |
| consumer_stop.set() |
| print('Messages sent: %d' % threads[0].sent) |
| print('Messages recvd: %d' % threads[1].valid) |
| print('Messages invalid: %d' % threads[1].invalid) |
|
|
| if __name__ == "__main__": |
| logging.basicConfig( |
| format='%(asctime)s.%(msecs)s:%(name)s:%(thread)d:%(levelname)s:%(process)d:%(message)s', |
| level=logging.INFO |
| ) |
| main() |
|
|
