/usr/lib/python2.7/dist-packages/celery/tests/worker/test_consumer.py is in python-celery 3.1.6-1ubuntu1.
This file is owned by root:root, with mode 0o644.
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import errno
import socket
from billiard.exceptions import RestartFreqExceeded
from celery.datastructures import LimitedSet
from celery.worker import state as worker_state
from celery.worker.consumer import (
Consumer,
Heart,
Tasks,
Agent,
Mingle,
Gossip,
dump_body,
CLOSE,
)
from celery.tests.case import AppCase, ContextMock, Mock, SkipTest, call, patch
class test_Consumer(AppCase):
def get_consumer(self, no_hub=False, **kwargs):
consumer = Consumer(
on_task_request=Mock(),
init_callback=Mock(),
pool=Mock(),
app=self.app,
timer=Mock(),
controller=Mock(),
hub=None if no_hub else Mock(),
**kwargs
)
consumer.blueprint = Mock()
consumer._restart_state = Mock()
consumer.connection = _amqp_connection()
consumer.connection_errors = (socket.error, OSError, )
return consumer
def test_taskbuckets_defaultdict(self):
c = self.get_consumer()
self.assertIsNone(c.task_buckets['fooxasdwx.wewe'])
def test_dump_body_buffer(self):
msg = Mock()
msg.body = 'str'
try:
buf = buffer(msg.body)
except NameError:
raise SkipTest('buffer type not available')
self.assertTrue(dump_body(msg, buf))
def test_sets_heartbeat(self):
c = self.get_consumer(amqheartbeat=10)
self.assertEqual(c.amqheartbeat, 10)
self.app.conf.BROKER_HEARTBEAT = 20
c = self.get_consumer(amqheartbeat=None)
self.assertEqual(c.amqheartbeat, 20)
def test_gevent_bug_disables_connection_timeout(self):
with patch('celery.worker.consumer._detect_environment') as de:
de.return_value = 'gevent'
self.app.conf.BROKER_CONNECTION_TIMEOUT = 33.33
self.get_consumer()
self.assertIsNone(self.app.conf.BROKER_CONNECTION_TIMEOUT)
def test_limit_task(self):
c = self.get_consumer()
with patch('celery.worker.consumer.task_reserved') as reserved:
bucket = Mock()
request = Mock()
bucket.can_consume.return_value = True
c._limit_task(request, bucket, 3)
bucket.can_consume.assert_called_with(3)
reserved.assert_called_with(request)
c.on_task_request.assert_called_with(request)
with patch('celery.worker.consumer.task_reserved') as reserved:
bucket.can_consume.return_value = False
bucket.expected_time.return_value = 3.33
c._limit_task(request, bucket, 4)
bucket.can_consume.assert_called_with(4)
c.timer.call_after.assert_called_with(
3.33, c._limit_task, (request, bucket, 4),
)
bucket.expected_time.assert_called_with(4)
self.assertFalse(reserved.called)
def test_start_blueprint_raises_EMFILE(self):
c = self.get_consumer()
exc = c.blueprint.start.side_effect = OSError()
exc.errno = errno.EMFILE
with self.assertRaises(OSError):
c.start()
def test_max_restarts_exceeded(self):
c = self.get_consumer()
def se(*args, **kwargs):
c.blueprint.state = CLOSE
raise RestartFreqExceeded()
c._restart_state.step.side_effect = se
c.blueprint.start.side_effect = socket.error()
with patch('celery.worker.consumer.sleep') as sleep:
c.start()
sleep.assert_called_with(1)
def _closer(self, c):
def se(*args, **kwargs):
c.blueprint.state = CLOSE
return se
def test_collects_at_restart(self):
c = self.get_consumer()
c.connection.collect.side_effect = MemoryError()
c.blueprint.start.side_effect = socket.error()
c.blueprint.restart.side_effect = self._closer(c)
c.start()
c.connection.collect.assert_called_with()
def test_register_with_event_loop(self):
c = self.get_consumer()
c.register_with_event_loop(Mock(name='loop'))
def test_on_close_clears_semaphore_timer_and_reqs(self):
with patch('celery.worker.consumer.reserved_requests') as reserved:
c = self.get_consumer()
c.on_close()
c.controller.semaphore.clear.assert_called_with()
c.timer.clear.assert_called_with()
reserved.clear.assert_called_with()
c.pool.flush.assert_called_with()
c.controller = None
c.timer = None
c.pool = None
c.on_close()
def test_connect_error_handler(self):
self.app.connection = _amqp_connection()
conn = self.app.connection.return_value
c = self.get_consumer()
self.assertTrue(c.connect())
self.assertTrue(conn.ensure_connection.called)
errback = conn.ensure_connection.call_args[0][0]
conn.alt = [(1, 2, 3)]
errback(Mock(), 0)
class test_Heart(AppCase):
def test_start(self):
c = Mock()
c.timer = Mock()
c.event_dispatcher = Mock()
with patch('celery.worker.heartbeat.Heart') as hcls:
h = Heart(c)
self.assertTrue(h.enabled)
self.assertIsNone(c.heart)
h.start(c)
self.assertTrue(c.heart)
hcls.assert_called_with(c.timer, c.event_dispatcher)
c.heart.start.assert_called_with()
class test_Tasks(AppCase):
def test_stop(self):
c = Mock()
tasks = Tasks(c)
self.assertIsNone(c.task_consumer)
self.assertIsNone(c.qos)
c.task_consumer = Mock()
tasks.stop(c)
def test_stop_already_stopped(self):
c = Mock()
tasks = Tasks(c)
tasks.stop(c)
class test_Agent(AppCase):
def test_start(self):
c = Mock()
agent = Agent(c)
agent.instantiate = Mock()
agent.agent_cls = 'foo:Agent'
self.assertIsNotNone(agent.create(c))
agent.instantiate.assert_called_with(agent.agent_cls, c.connection)
class test_Mingle(AppCase):
def test_start_no_replies(self):
c = Mock()
c.app.connection = _amqp_connection()
mingle = Mingle(c)
I = c.app.control.inspect.return_value = Mock()
I.hello.return_value = {}
mingle.start(c)
def test_start(self):
try:
c = Mock()
c.app.connection = _amqp_connection()
mingle = Mingle(c)
self.assertTrue(mingle.enabled)
Aig = LimitedSet()
Big = LimitedSet()
Aig.add('Aig-1')
Aig.add('Aig-2')
Big.add('Big-1')
I = c.app.control.inspect.return_value = Mock()
I.hello.return_value = {
'A@example.com': {
'clock': 312,
'revoked': Aig._data,
},
'B@example.com': {
'clock': 29,
'revoked': Big._data,
},
'C@example.com': {
'error': 'unknown method',
},
}
mingle.start(c)
I.hello.assert_called_with(c.hostname, worker_state.revoked._data)
c.app.clock.adjust.assert_has_calls([
call(312), call(29),
], any_order=True)
self.assertIn('Aig-1', worker_state.revoked)
self.assertIn('Aig-2', worker_state.revoked)
self.assertIn('Big-1', worker_state.revoked)
finally:
worker_state.revoked.clear()
def _amqp_connection():
connection = ContextMock()
connection.return_value = ContextMock()
connection.return_value.transport.driver_type = 'amqp'
return connection
class test_Gossip(AppCase):
def test_init(self):
c = self.Consumer()
c.app.connection = _amqp_connection()
g = Gossip(c)
self.assertTrue(g.enabled)
self.assertIs(c.gossip, g)
def test_election(self):
c = self.Consumer()
c.app.connection = _amqp_connection()
g = Gossip(c)
g.start(c)
g.election('id', 'topic', 'action')
self.assertListEqual(g.consensus_replies['id'], [])
g.dispatcher.send.assert_called_with(
'worker-elect', id='id', topic='topic', cver=1, action='action',
)
def test_call_task(self):
c = self.Consumer()
c.app.connection = _amqp_connection()
g = Gossip(c)
g.start(c)
with patch('celery.worker.consumer.signature') as signature:
sig = signature.return_value = Mock()
task = Mock()
g.call_task(task)
signature.assert_called_with(task, app=c.app)
sig.apply_async.assert_called_with()
sig.apply_async.side_effect = MemoryError()
with patch('celery.worker.consumer.error') as error:
g.call_task(task)
self.assertTrue(error.called)
def Event(self, id='id', clock=312,
hostname='foo@example.com', pid=4312,
topic='topic', action='action', cver=1):
return {
'id': id,
'clock': clock,
'hostname': hostname,
'pid': pid,
'topic': topic,
'action': action,
'cver': cver,
}
def test_on_elect(self):
c = self.Consumer()
c.app.connection = _amqp_connection()
g = Gossip(c)
g.start(c)
event = self.Event('id1')
g.on_elect(event)
in_heap = g.consensus_requests['id1']
self.assertTrue(in_heap)
g.dispatcher.send.assert_called_with('worker-elect-ack', id='id1')
event.pop('clock')
with patch('celery.worker.consumer.error') as error:
g.on_elect(event)
self.assertTrue(error.called)
def Consumer(self, hostname='foo@x.com', pid=4312):
c = Mock()
c.app.connection = _amqp_connection()
c.hostname = hostname
c.pid = pid
return c
def setup_election(self, g, c):
g.start(c)
g.clock = self.app.clock
self.assertNotIn('idx', g.consensus_replies)
self.assertIsNone(g.on_elect_ack({'id': 'idx'}))
g.state.alive_workers.return_value = [
'foo@x.com', 'bar@x.com', 'baz@x.com',
]
g.consensus_replies['id1'] = []
g.consensus_requests['id1'] = []
e1 = self.Event('id1', 1, 'foo@x.com')
e2 = self.Event('id1', 2, 'bar@x.com')
e3 = self.Event('id1', 3, 'baz@x.com')
g.on_elect(e1)
g.on_elect(e2)
g.on_elect(e3)
self.assertEqual(len(g.consensus_requests['id1']), 3)
with patch('celery.worker.consumer.info'):
g.on_elect_ack(e1)
self.assertEqual(len(g.consensus_replies['id1']), 1)
g.on_elect_ack(e2)
self.assertEqual(len(g.consensus_replies['id1']), 2)
g.on_elect_ack(e3)
with self.assertRaises(KeyError):
g.consensus_replies['id1']
def test_on_elect_ack_win(self):
c = self.Consumer(hostname='foo@x.com') # I will win
g = Gossip(c)
handler = g.election_handlers['topic'] = Mock()
self.setup_election(g, c)
handler.assert_called_with('action')
def test_on_elect_ack_lose(self):
c = self.Consumer(hostname='bar@x.com') # I will lose
c.app.connection = _amqp_connection()
g = Gossip(c)
handler = g.election_handlers['topic'] = Mock()
self.setup_election(g, c)
self.assertFalse(handler.called)
def test_on_elect_ack_win_but_no_action(self):
c = self.Consumer(hostname='foo@x.com') # I will win
g = Gossip(c)
g.election_handlers = {}
with patch('celery.worker.consumer.error') as error:
self.setup_election(g, c)
self.assertTrue(error.called)
def test_on_node_join(self):
c = self.Consumer()
g = Gossip(c)
with patch('celery.worker.consumer.debug') as debug:
g.on_node_join(c)
debug.assert_called_with('%s joined the party', 'foo@x.com')
def test_on_node_leave(self):
c = self.Consumer()
g = Gossip(c)
with patch('celery.worker.consumer.debug') as debug:
g.on_node_leave(c)
debug.assert_called_with('%s left', 'foo@x.com')
def test_on_node_lost(self):
c = self.Consumer()
g = Gossip(c)
with patch('celery.worker.consumer.info') as info:
g.on_node_lost(c)
info.assert_called_with('missed heartbeat from %s', 'foo@x.com')
def test_register_timer(self):
c = self.Consumer()
g = Gossip(c)
g.register_timer()
c.timer.call_repeatedly.assert_called_with(g.interval, g.periodic)
tref = g._tref
g.register_timer()
tref.cancel.assert_called_with()
def test_periodic(self):
c = self.Consumer()
g = Gossip(c)
g.on_node_lost = Mock()
state = g.state = Mock()
worker = Mock()
state.workers = {'foo': worker}
worker.alive = True
worker.hostname = 'foo'
g.periodic()
worker.alive = False
g.periodic()
g.on_node_lost.assert_called_with(worker)
with self.assertRaises(KeyError):
state.workers['foo']
def test_on_message(self):
c = self.Consumer()
g = Gossip(c)
prepare = Mock()
prepare.return_value = 'worker-online', {}
g.update_state = Mock()
worker = Mock()
g.on_node_join = Mock()
g.on_node_leave = Mock()
g.update_state.return_value = worker, 1
message = Mock()
message.delivery_info = {'routing_key': 'worker-online'}
message.headers = {'hostname': 'other'}
handler = g.event_handlers['worker-online'] = Mock()
g.on_message(prepare, message)
handler.assert_called_with(message.payload)
g.event_handlers = {}
g.on_message(prepare, message)
g.on_node_join.assert_called_with(worker)
message.delivery_info = {'routing_key': 'worker-offline'}
prepare.return_value = 'worker-offline', {}
g.on_message(prepare, message)
g.on_node_leave.assert_called_with(worker)
message.delivery_info = {'routing_key': 'worker-baz'}
prepare.return_value = 'worker-baz', {}
g.update_state.return_value = worker, 0
g.on_message(prepare, message)
g.on_node_leave.reset_mock()
message.headers = {'hostname': g.hostname}
g.on_message(prepare, message)
self.assertFalse(g.on_node_leave.called)
g.clock.forward.assert_called_with()
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