120 lines
4.8 KiB
Python
120 lines
4.8 KiB
Python
import os
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import random
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import struct
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import unittest
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from kafka.kafka import KafkaClient, ProduceRequest, FetchRequest
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from kafka.kafka import gzip_encode, gzip_decode, length_prefix_message
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ITERATIONS = 1000
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STRLEN = 100
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def random_string():
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return os.urandom(random.randint(0, STRLEN))
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class TestMisc(unittest.TestCase):
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def test_length_prefix(self):
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for i in xrange(ITERATIONS):
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s1 = random_string()
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s2 = length_prefix_message(s1)
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self.assertEquals(struct.unpack('>i', s2[0:4])[0], len(s1))
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class TestCodec(unittest.TestCase):
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def test_gzip(self):
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for i in xrange(ITERATIONS):
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s1 = random_string()
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s2 = gzip_decode(gzip_encode(s1))
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self.assertEquals(s1,s2)
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class TestMessage(unittest.TestCase):
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def test_create(self):
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msg = KafkaClient.create_message("testing")
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self.assertEquals(msg.payload, "testing")
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self.assertEquals(msg.magic, 1)
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self.assertEquals(msg.attributes, 0)
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self.assertEquals(msg.crc, -386704890)
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def test_create_gzip(self):
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msg = KafkaClient.create_gzip_message("testing")
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self.assertEquals(msg.magic, 1)
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self.assertEquals(msg.attributes, 1)
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# Can't check the crc or payload for gzip since it's non-deterministic
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(messages, _) = KafkaClient.read_message_set(gzip_decode(msg.payload))
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inner = messages[0]
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self.assertEquals(inner.magic, 1)
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self.assertEquals(inner.attributes, 0)
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self.assertEquals(inner.payload, "testing")
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self.assertEquals(inner.crc, -386704890)
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def test_message_simple(self):
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msg = KafkaClient.create_message("testing")
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enc = KafkaClient.encode_message(msg)
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expect = "\x00\x00\x00\r\x01\x00\xe8\xf3Z\x06testing"
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self.assertEquals(enc, expect)
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(messages, read) = KafkaClient.read_message_set(enc)
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self.assertEquals(len(messages), 1)
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self.assertEquals(messages[0], msg)
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def test_message_list(self):
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msgs = [
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KafkaClient.create_message("one"),
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KafkaClient.create_message("two"),
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KafkaClient.create_message("three")
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]
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enc = KafkaClient.encode_message_set(msgs)
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expect = ("\x00\x00\x00\t\x01\x00zl\x86\xf1one\x00\x00\x00\t\x01\x00\x11"
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"\xca\x8aftwo\x00\x00\x00\x0b\x01\x00F\xc5\xd8\xf5three")
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self.assertEquals(enc, expect)
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(messages, read) = KafkaClient.read_message_set(enc)
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self.assertEquals(len(messages), 3)
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self.assertEquals(messages[0].payload, "one")
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self.assertEquals(messages[1].payload, "two")
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self.assertEquals(messages[2].payload, "three")
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def test_message_gzip(self):
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msg = KafkaClient.create_gzip_message("one", "two", "three")
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enc = KafkaClient.encode_message(msg)
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# Can't check the bytes directly since Gzip is non-deterministic
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(messages, read) = KafkaClient.read_message_set(enc)
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self.assertEquals(len(messages), 3)
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self.assertEquals(messages[0].payload, "one")
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self.assertEquals(messages[1].payload, "two")
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self.assertEquals(messages[2].payload, "three")
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def test_message_simple_random(self):
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for i in xrange(ITERATIONS):
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n = random.randint(0, 10)
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msgs = [KafkaClient.create_message(random_string()) for j in range(n)]
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enc = KafkaClient.encode_message_set(msgs)
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(messages, read) = KafkaClient.read_message_set(enc)
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self.assertEquals(len(messages), n)
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for j in range(n):
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self.assertEquals(messages[j], msgs[j])
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def test_message_gzip_random(self):
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for i in xrange(ITERATIONS):
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n = random.randint(0, 10)
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strings = [random_string() for j in range(n)]
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msg = KafkaClient.create_gzip_message(*strings)
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enc = KafkaClient.encode_message(msg)
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(messages, read) = KafkaClient.read_message_set(enc)
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self.assertEquals(len(messages), n)
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for j in range(n):
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self.assertEquals(messages[j].payload, strings[j])
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class TestRequests(unittest.TestCase):
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def test_produce_request(self):
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req = ProduceRequest("my-topic", 0, [KafkaClient.create_message("testing")])
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enc = KafkaClient.encode_produce_request(req)
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expect = "\x00\x00\x00\x08my-topic\x00\x00\x00\x00\x00\x00\x00\x11\x00\x00\x00\r\x01\x00\xe8\xf3Z\x06testing"
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self.assertEquals(enc, expect)
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def test_fetch_request(self):
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req = FetchRequest("my-topic", 0, 0, 1024)
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enc = KafkaClient.encode_fetch_request(req)
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expect = "\x00\x01\x00\x08my-topic\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00"
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self.assertEquals(enc, expect)
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if __name__ == '__main__':
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unittest.main()
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