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import os
import select
import shlex
import shutil
import socket
import subprocess
import sys
import tempfile
from threading import Thread, Event
import time
import unittest
from kafka import KafkaClient, ProduceRequest, FetchRequest
def get_open_port():
sock = socket.socket()
sock.bind(('',0))
port = sock.getsockname()[1]
sock.close()
return port
class KafkaFixture(Thread):
def __init__(self, port):
Thread.__init__(self)
self.port = port
self.capture = ""
self.shouldDie = Event()
self.tmpDir = tempfile.mkdtemp()
def run(self):
# Create the log directory
logDir = os.path.join(self.tmpDir, 'logs')
os.mkdir(logDir)
# Create the config file
configFile = os.path.join(self.tmpDir, 'server.properties')
f = open('test/resources/server.properties', 'r')
props = f.read()
f = open(configFile, 'w')
f.write(props % {'kafka.port': self.port, 'kafka.tmp.dir': logDir, 'kafka.partitions': 2})
f.close()
# Start Kafka
args = shlex.split("./kafka-src/bin/kafka-server-start.sh %s" % configFile)
proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env={"JMX_PORT":"%d" % get_open_port()})
killed = False
while True:
(rlist, wlist, xlist) = select.select([proc.stdout], [], [], 1)
if proc.stdout in rlist:
read = proc.stdout.readline()
sys.stdout.write(read)
self.capture += read
if self.shouldDie.is_set():
proc.terminate()
killed = True
if proc.poll() is not None:
shutil.rmtree(self.tmpDir)
if killed:
break
else:
raise RuntimeError("Kafka died. Aborting.")
def wait_for(self, target, timeout=10):
t1 = time.time()
while True:
t2 = time.time()
if t2-t1 >= timeout:
return False
if target in self.capture:
return True
time.sleep(1)
class IntegrationTest(unittest.TestCase):
def setUp(self):
port = get_open_port()
self.server = KafkaFixture(port)
self.server.start()
self.server.wait_for("Kafka server started")
self.kafka = KafkaClient("localhost", port)
def test_produce(self):
req = ProduceRequest("my-topic", 0, [KafkaClient.create_message("testing")])
self.kafka.send_message_set(req)
self.assertTrue(self.server.wait_for("Created log for 'my-topic'-0"))
req = ProduceRequest("my-topic", 1, [KafkaClient.create_message("testing")])
self.kafka.send_message_set(req)
self.assertTrue(self.server.wait_for("Created log for 'my-topic'-1"))
def tearDown(self):
self.kafka.close()
self.server.shouldDie.set()
if __name__ == "__main__":
unittest.main()
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