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import glob
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.kafka import KafkaClient, ProduceRequest, FetchRequest
def get_open_port():
sock = socket.socket()
sock.bind(('',0))
port = sock.getsockname()[1]
sock.close()
return port
def build_kafka_classpath():
baseDir = "./kafka-src"
jars = []
jars += glob.glob(os.path.join(baseDir, "project/boot/scala-2.8.0/lib/*.jar"))
jars += glob.glob(os.path.join(baseDir, "core/target/scala_2.8.0/*.jar"))
jars += glob.glob(os.path.join(baseDir, "core/lib/*.jar"))
jars += glob.glob(os.path.join(baseDir, "perf/target/scala_2.8.0/kafka*.jar"))
jars += glob.glob(os.path.join(baseDir, "core/lib_managed/scala_2.8.0/compile/*.jar"))
return ":".join(["."] + [os.path.abspath(jar) for jar in jars])
class KafkaFixture(Thread):
def __init__(self, port):
Thread.__init__(self)
self.port = port
self.capture = ""
self.shouldDie = Event()
self.tmpDir = tempfile.mkdtemp()
print("tmp dir: %s" % self.tmpDir)
def run(self):
# Create the log directory
logDir = os.path.join(self.tmpDir, 'logs')
os.mkdir(logDir)
# Create the config file
logConfig = "test/resources/log4j.properties"
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("java -Xmx256M -server -Dlog4j.configuration=%s -cp %s kafka.Kafka %s" % (logConfig, build_kafka_classpath(), 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(0.100)
class IntegrationTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
port = get_open_port()
cls.server = KafkaFixture(port)
cls.server.start()
cls.server.wait_for("Kafka server started")
cls.kafka = KafkaClient("localhost", port)
@classmethod
def tearDownClass(cls):
cls.kafka.close()
cls.server.shouldDie.set()
def test_produce(self):
# Produce a message, check that the log got created
req = ProduceRequest("test-produce", 0, [KafkaClient.create_message("testing")])
self.kafka.send_message_set(req)
self.assertTrue(self.server.wait_for("Created log for 'test-produce'-0"))
# Same thing, different partition
req = ProduceRequest("test-produce", 1, [KafkaClient.create_message("testing")])
self.kafka.send_message_set(req)
self.assertTrue(self.server.wait_for("Created log for 'test-produce'-1"))
def test_produce_consume(self):
# Send two messages and consume them
message1 = KafkaClient.create_message("testing 1")
message2 = KafkaClient.create_message("testing 2")
req = ProduceRequest("test-produce-consume", 0, [message1, message2])
self.kafka.send_message_set(req)
self.assertTrue(self.server.wait_for("Created log for 'test-produce-consume'-0"))
self.assertTrue(self.server.wait_for("Flushing log 'test-produce-consume-0'"))
req = FetchRequest("test-produce-consume", 0, 0, 1024)
(messages, req) = self.kafka.get_message_set(req)
self.assertEquals(len(messages), 2)
self.assertEquals(messages[0], message1)
self.assertEquals(messages[1], message2)
# Do the same, but for a different partition
message3 = KafkaClient.create_message("testing 3")
message4 = KafkaClient.create_message("testing 4")
req = ProduceRequest("test-produce-consume", 1, [message3, message4])
self.kafka.send_message_set(req)
self.assertTrue(self.server.wait_for("Created log for 'test-produce-consume'-1"))
self.assertTrue(self.server.wait_for("Flushing log 'test-produce-consume-1'"))
req = FetchRequest("test-produce-consume", 1, 0, 1024)
(messages, req) = self.kafka.get_message_set(req)
self.assertEquals(len(messages), 2)
self.assertEquals(messages[0], message3)
self.assertEquals(messages[1], message4)
def test_check_offset(self):
# Produce/consume a message, check that the next offset looks correct
message1 = KafkaClient.create_message("testing 1")
req = ProduceRequest("test-check-offset", 0, [message1])
self.kafka.send_message_set(req)
self.assertTrue(self.server.wait_for("Created log for 'test-check-offset'-0"))
self.assertTrue(self.server.wait_for("Flushing log 'test-check-offset-0'"))
req = FetchRequest("test-check-offset", 0, 0, 1024)
(messages, nextReq) = self.kafka.get_message_set(req)
self.assertEquals(len(messages), 1)
self.assertEquals(messages[0], message1)
self.assertEquals(nextReq.offset, len(KafkaClient.encode_message(message1)))
# Produce another message, consume with the last offset
message2 = KafkaClient.create_message("test 2")
req = ProduceRequest("test-check-offset", 0, [message2])
self.kafka.send_message_set(req)
self.assertTrue(self.server.wait_for("Flushing log 'test-check-offset-0'"))
# Verify
(messages, nextReq) = self.kafka.get_message_set(nextReq)
self.assertEquals(len(messages), 1)
self.assertEquals(messages[0], message2)
self.assertEquals(nextReq.offset, len(KafkaClient.encode_message(message1)) + len(KafkaClient.encode_message(message2)))
if __name__ == "__main__":
unittest.main()
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