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import functools
import logging
import operator
import os
import random
import socket
import string
import time
import uuid
from six.moves import xrange
from . import unittest
from kafka import SimpleClient
from kafka.structs import OffsetRequestPayload
__all__ = [
'random_string',
'get_open_port',
'kafka_versions',
'KafkaIntegrationTestCase',
'Timer',
]
def random_string(l):
return "".join(random.choice(string.ascii_letters) for i in xrange(l))
def kafka_versions(*versions):
def version_str_to_list(s):
return list(map(int, s.split('.'))) # e.g., [0, 8, 1, 1]
def construct_lambda(s):
if s[0].isdigit():
op_str = '='
v_str = s
elif s[1].isdigit():
op_str = s[0] # ! < > =
v_str = s[1:]
elif s[2].isdigit():
op_str = s[0:2] # >= <=
v_str = s[2:]
else:
raise ValueError('Unrecognized kafka version / operator: %s' % s)
op_map = {
'=': operator.eq,
'!': operator.ne,
'>': operator.gt,
'<': operator.lt,
'>=': operator.ge,
'<=': operator.le
}
op = op_map[op_str]
version = version_str_to_list(v_str)
return lambda a: op(version_str_to_list(a), version)
validators = map(construct_lambda, versions)
def kafka_versions(func):
@functools.wraps(func)
def wrapper(self):
kafka_version = os.environ.get('KAFKA_VERSION')
if not kafka_version:
self.skipTest("no kafka version set in KAFKA_VERSION env var")
for f in validators:
if not f(kafka_version):
self.skipTest("unsupported kafka version")
return func(self)
return wrapper
return kafka_versions
def get_open_port():
sock = socket.socket()
sock.bind(("", 0))
port = sock.getsockname()[1]
sock.close()
return port
class KafkaIntegrationTestCase(unittest.TestCase):
create_client = True
topic = None
zk = None
server = None
def setUp(self):
super(KafkaIntegrationTestCase, self).setUp()
if not os.environ.get('KAFKA_VERSION'):
self.skipTest('Integration test requires KAFKA_VERSION')
if not self.topic:
topic = "%s-%s" % (self.id()[self.id().rindex(".") + 1:], random_string(10))
self.topic = topic
if self.create_client:
self.client = SimpleClient('%s:%d' % (self.server.host, self.server.port))
self.client.ensure_topic_exists(self.topic)
self._messages = {}
def tearDown(self):
super(KafkaIntegrationTestCase, self).tearDown()
if not os.environ.get('KAFKA_VERSION'):
return
if self.create_client:
self.client.close()
def current_offset(self, topic, partition):
try:
offsets, = self.client.send_offset_request([OffsetRequestPayload(topic, partition, -1, 1)])
except Exception:
# XXX: We've seen some UnknownErrors here and can't debug w/o server logs
self.zk.child.dump_logs()
self.server.child.dump_logs()
raise
else:
return offsets.offsets[0]
def msgs(self, iterable):
return [ self.msg(x) for x in iterable ]
def msg(self, s):
if s not in self._messages:
self._messages[s] = '%s-%s-%s' % (s, self.id(), str(uuid.uuid4()))
return self._messages[s].encode('utf-8')
def key(self, k):
return k.encode('utf-8')
class Timer(object):
def __enter__(self):
self.start = time.time()
return self
def __exit__(self, *args):
self.end = time.time()
self.interval = self.end - self.start
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