1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
import collections
import logging
import threading
import time
import pytest
import six
from kafka import SimpleClient
from kafka.conn import ConnectionStates
from kafka.consumer.group import KafkaConsumer
from kafka.structs import TopicPartition
from test.conftest import version
from test.testutil import random_string
def get_connect_str(kafka_broker):
return 'localhost:' + str(kafka_broker.port)
@pytest.fixture
def simple_client(kafka_broker):
return SimpleClient(get_connect_str(kafka_broker))
@pytest.fixture
def topic(simple_client):
topic = random_string(5)
simple_client.ensure_topic_exists(topic)
return topic
@pytest.mark.skipif(not version(), reason="No KAFKA_VERSION set")
def test_consumer(kafka_broker, version):
# 0.8.2 brokers need a topic to function well
if version >= (0, 8, 2) and version < (0, 9):
topic(simple_client(kafka_broker))
consumer = KafkaConsumer(bootstrap_servers=get_connect_str(kafka_broker))
consumer.poll(500)
assert len(consumer._client._conns) > 0
node_id = list(consumer._client._conns.keys())[0]
assert consumer._client._conns[node_id].state is ConnectionStates.CONNECTED
@pytest.mark.skipif(version() < (0, 9), reason='Unsupported Kafka Version')
@pytest.mark.skipif(not version(), reason="No KAFKA_VERSION set")
def test_group(kafka_broker, topic):
num_partitions = 4
connect_str = get_connect_str(kafka_broker)
consumers = {}
stop = {}
threads = {}
messages = collections.defaultdict(list)
def consumer_thread(i):
assert i not in consumers
assert i not in stop
stop[i] = threading.Event()
consumers[i] = KafkaConsumer(topic,
bootstrap_servers=connect_str,
heartbeat_interval_ms=500)
while not stop[i].is_set():
for tp, records in six.itervalues(consumers[i].poll(100)):
messages[i][tp].extend(records)
consumers[i].close()
del consumers[i]
del stop[i]
num_consumers = 4
for i in range(num_consumers):
t = threading.Thread(target=consumer_thread, args=(i,))
t.start()
threads[i] = t
try:
timeout = time.time() + 35
while True:
for c in range(num_consumers):
# Verify all consumers have been created
if c not in consumers:
break
# Verify all consumers have an assignment
elif not consumers[c].assignment():
break
# If all consumers exist and have an assignment
else:
# Verify all consumers are in the same generation
# then log state and break while loop
generations = set([consumer._coordinator.generation
for consumer in list(consumers.values())])
if len(generations) == 1:
for c, consumer in list(consumers.items()):
logging.info("[%s] %s %s: %s", c,
consumer._coordinator.generation,
consumer._coordinator.member_id,
consumer.assignment())
break
assert time.time() < timeout, "timeout waiting for assignments"
group_assignment = set()
for c in range(num_consumers):
assert len(consumers[c].assignment()) != 0
assert set.isdisjoint(consumers[c].assignment(), group_assignment)
group_assignment.update(consumers[c].assignment())
assert group_assignment == set([
TopicPartition(topic, partition)
for partition in range(num_partitions)])
finally:
for c in range(num_consumers):
stop[c].set()
threads[c].join()
@pytest.mark.skipif(not version(), reason="No KAFKA_VERSION set")
def test_paused(kafka_broker, topic):
consumer = KafkaConsumer(bootstrap_servers=get_connect_str(kafka_broker))
topics = [TopicPartition(topic, 1)]
consumer.assign(topics)
assert set(topics) == consumer.assignment()
assert set() == consumer.paused()
consumer.pause(topics[0])
assert set([topics[0]]) == consumer.paused()
consumer.resume(topics[0])
assert set() == consumer.paused()
consumer.unsubscribe()
assert set() == consumer.paused()
def test_heartbeat_timeout(conn, mocker):
mocker.patch('kafka.client_async.KafkaClient.check_version', return_value = (0, 9))
mocker.patch('time.time', return_value = 1234)
consumer = KafkaConsumer('foobar')
mocker.patch.object(consumer._coordinator.heartbeat, 'ttl', return_value = 0)
assert consumer._next_timeout() == 1234
|
