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import sys
import pytest
from kafka import KafkaConsumer, KafkaProducer
from kafka.producer.buffer import SimpleBufferPool
from test.conftest import version
from test.testutil import random_string
def test_buffer_pool():
pool = SimpleBufferPool(1000, 1000)
buf1 = pool.allocate(1000, 1000)
message = ''.join(map(str, range(100)))
buf1.write(message.encode('utf-8'))
pool.deallocate(buf1)
buf2 = pool.allocate(1000, 1000)
assert buf2.read() == b''
@pytest.mark.skipif(not version(), reason="No KAFKA_VERSION set")
@pytest.mark.parametrize("compression", [None, 'gzip', 'snappy', 'lz4'])
def test_end_to_end(kafka_broker, compression):
if compression == 'lz4':
# LZ4 requires 0.8.2
if version() < (0, 8, 2):
return
# LZ4 python libs dont work on python2.6
elif sys.version_info < (2, 7):
return
connect_str = 'localhost:' + str(kafka_broker.port)
producer = KafkaProducer(bootstrap_servers=connect_str,
retries=5,
max_block_ms=10000,
compression_type=compression,
value_serializer=str.encode)
consumer = KafkaConsumer(bootstrap_servers=connect_str,
group_id=None,
consumer_timeout_ms=10000,
auto_offset_reset='earliest',
value_deserializer=bytes.decode)
topic = random_string(5)
messages = 100
futures = []
for i in range(messages):
futures.append(producer.send(topic, 'msg %d' % i))
ret = [f.get(timeout=30) for f in futures]
assert len(ret) == messages
producer.close()
consumer.subscribe([topic])
msgs = set()
for i in range(messages):
try:
msgs.add(next(consumer).value)
except StopIteration:
break
assert msgs == set(['msg %d' % i for i in range(messages)])
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