/usr/lib/python2.7/dist-packages/celery/tests/worker/test_autoscale.py is in python-celery 3.1.20-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | from __future__ import absolute_import
import sys
from celery.concurrency.base import BasePool
from celery.five import monotonic
from celery.worker import state
from celery.worker import autoscale
from celery.tests.case import AppCase, Mock, patch, sleepdeprived
class Object(object):
pass
class MockPool(BasePool):
shrink_raises_exception = False
shrink_raises_ValueError = False
def __init__(self, *args, **kwargs):
super(MockPool, self).__init__(*args, **kwargs)
self._pool = Object()
self._pool._processes = self.limit
def grow(self, n=1):
self._pool._processes += n
def shrink(self, n=1):
if self.shrink_raises_exception:
raise KeyError('foo')
if self.shrink_raises_ValueError:
raise ValueError('foo')
self._pool._processes -= n
@property
def num_processes(self):
return self._pool._processes
class test_WorkerComponent(AppCase):
def test_register_with_event_loop(self):
parent = Mock(name='parent')
parent.autoscale = True
parent.consumer.on_task_message = set()
w = autoscale.WorkerComponent(parent)
self.assertIsNone(parent.autoscaler)
self.assertTrue(w.enabled)
hub = Mock(name='hub')
w.create(parent)
w.register_with_event_loop(parent, hub)
self.assertIn(
parent.autoscaler.maybe_scale,
parent.consumer.on_task_message,
)
hub.call_repeatedly.assert_called_with(
parent.autoscaler.keepalive, parent.autoscaler.maybe_scale,
)
parent.hub = hub
hub.on_init = []
w.instantiate = Mock()
w.register_with_event_loop(parent, Mock(name='loop'))
self.assertTrue(parent.consumer.on_task_message)
class test_Autoscaler(AppCase):
def setup(self):
self.pool = MockPool(3)
def test_stop(self):
class Scaler(autoscale.Autoscaler):
alive = True
joined = False
def is_alive(self):
return self.alive
def join(self, timeout=None):
self.joined = True
worker = Mock(name='worker')
x = Scaler(self.pool, 10, 3, worker=worker)
x._is_stopped.set()
x.stop()
self.assertTrue(x.joined)
x.joined = False
x.alive = False
x.stop()
self.assertFalse(x.joined)
@sleepdeprived(autoscale)
def test_body(self):
worker = Mock(name='worker')
x = autoscale.Autoscaler(self.pool, 10, 3, worker=worker)
x.body()
self.assertEqual(x.pool.num_processes, 3)
for i in range(20):
state.reserved_requests.add(i)
x.body()
x.body()
self.assertEqual(x.pool.num_processes, 10)
self.assertTrue(worker.consumer._update_prefetch_count.called)
state.reserved_requests.clear()
x.body()
self.assertEqual(x.pool.num_processes, 10)
x._last_action = monotonic() - 10000
x.body()
self.assertEqual(x.pool.num_processes, 3)
self.assertTrue(worker.consumer._update_prefetch_count.called)
def test_run(self):
class Scaler(autoscale.Autoscaler):
scale_called = False
def body(self):
self.scale_called = True
self._is_shutdown.set()
worker = Mock(name='worker')
x = Scaler(self.pool, 10, 3, worker=worker)
x.run()
self.assertTrue(x._is_shutdown.isSet())
self.assertTrue(x._is_stopped.isSet())
self.assertTrue(x.scale_called)
def test_shrink_raises_exception(self):
worker = Mock(name='worker')
x = autoscale.Autoscaler(self.pool, 10, 3, worker=worker)
x.scale_up(3)
x._last_action = monotonic() - 10000
x.pool.shrink_raises_exception = True
x.scale_down(1)
@patch('celery.worker.autoscale.debug')
def test_shrink_raises_ValueError(self, debug):
worker = Mock(name='worker')
x = autoscale.Autoscaler(self.pool, 10, 3, worker=worker)
x.scale_up(3)
x._last_action = monotonic() - 10000
x.pool.shrink_raises_ValueError = True
x.scale_down(1)
self.assertTrue(debug.call_count)
def test_update_and_force(self):
worker = Mock(name='worker')
x = autoscale.Autoscaler(self.pool, 10, 3, worker=worker)
self.assertEqual(x.processes, 3)
x.force_scale_up(5)
self.assertEqual(x.processes, 8)
x.update(5, None)
self.assertEqual(x.processes, 5)
x.force_scale_down(3)
self.assertEqual(x.processes, 2)
x.update(3, None)
self.assertEqual(x.processes, 3)
x.force_scale_down(1000)
self.assertEqual(x.min_concurrency, 0)
self.assertEqual(x.processes, 0)
x.force_scale_up(1000)
x.min_concurrency = 1
x.force_scale_down(1)
x.update(max=300, min=10)
x.update(max=300, min=2)
x.update(max=None, min=None)
def test_info(self):
worker = Mock(name='worker')
x = autoscale.Autoscaler(self.pool, 10, 3, worker=worker)
info = x.info()
self.assertEqual(info['max'], 10)
self.assertEqual(info['min'], 3)
self.assertEqual(info['current'], 3)
@patch('os._exit')
def test_thread_crash(self, _exit):
class _Autoscaler(autoscale.Autoscaler):
def body(self):
self._is_shutdown.set()
raise OSError('foo')
worker = Mock(name='worker')
x = _Autoscaler(self.pool, 10, 3, worker=worker)
stderr = Mock()
p, sys.stderr = sys.stderr, stderr
try:
x.run()
finally:
sys.stderr = p
_exit.assert_called_with(1)
self.assertTrue(stderr.write.call_count)
|