def test_max_batch_size(self):
q = Queue()
consumer = Consumer(q, TEST_API_KEY, flush_at=100000, flush_interval=3)
track = {
'type': 'track',
'event': 'python event',
'distinct_id': 'distinct_id'
}
msg_size = len(json.dumps(track).encode())
# number of messages in a maximum-size batch
n_msgs = int(475000 / msg_size)
def mock_post_fn(_, data, **kwargs):
res = mock.Mock()
res.status_code = 200
self.assertTrue(
len(data.encode()) < 500000,
'batch size (%d) exceeds 500KB limit' % len(data.encode()))
return res
with mock.patch('posthog.request._session.post',
side_effect=mock_post_fn) as mock_post:
consumer.start()
for _ in range(0, n_msgs + 2):
q.put(track)
q.join()
self.assertEquals(mock_post.call_count, 2)
def __init__(self,
api_key=None,
host=None,
debug=False,
max_queue_size=10000,
send=True,
on_error=None,
flush_at=100,
flush_interval=0.5,
gzip=False,
max_retries=3,
sync_mode=False,
timeout=15,
thread=1):
require('api_key', api_key, string_types)
self.queue = queue.Queue(max_queue_size)
self.api_key = api_key
self.on_error = on_error
self.debug = debug
self.send = send
self.sync_mode = sync_mode
self.host = host
self.gzip = gzip
self.timeout = timeout
if debug:
self.log.setLevel(logging.DEBUG)
if sync_mode:
self.consumers = None
else:
# On program exit, allow the consumer thread to exit cleanly.
# This prevents exceptions and a messy shutdown when the
# interpreter is destroyed before the daemon thread finishes
# execution. However, it is *not* the same as flushing the queue!
# To guarantee all messages have been delivered, you'll still need
# to call flush().
if send:
atexit.register(self.join)
for n in range(thread):
self.consumers = []
consumer = Consumer(
self.queue,
api_key,
host=host,
on_error=on_error,
flush_at=flush_at,
flush_interval=flush_interval,
gzip=gzip,
retries=max_retries,
timeout=timeout,
)
self.consumers.append(consumer)
# if we've disabled sending, just don't start the consumer
if send:
consumer.start()
def test_multiple_uploads_per_interval(self):
# Put _flush_at*2_ items in the queue at once, then pause for
# _flush_interval_. The consumer should upload 2 times.
q = Queue()
flush_interval = 0.5
flush_at = 10
consumer = Consumer(q,
TEST_API_KEY,
flush_at=flush_at,
flush_interval=flush_interval)
with mock.patch('posthog.consumer.batch_post') as mock_post:
consumer.start()
for i in range(0, flush_at * 2):
track = {
'type': 'track',
'event': 'python event %d' % i,
'distinct_id': 'distinct_id'
}
q.put(track)
time.sleep(flush_interval * 1.1)
self.assertEqual(mock_post.call_count, 2)
def test_flush_interval(self):
# Put _n_ items in the queue, pausing a little bit more than
# _flush_interval_ after each one.
# The consumer should upload _n_ times.
q = Queue()
flush_interval = 0.3
consumer = Consumer(q,
TEST_API_KEY,
flush_at=10,
flush_interval=flush_interval)
with mock.patch('posthog.consumer.batch_post') as mock_post:
consumer.start()
for i in range(0, 3):
track = {
'type': 'track',
'event': 'python event %d' % i,
'distinct_id': 'distinct_id'
}
q.put(track)
time.sleep(flush_interval * 1.1)
self.assertEqual(mock_post.call_count, 3)