/usr/lib/python3/dist-packages/celery/tests/functional/case.py is in python3-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 | from __future__ import absolute_import
import atexit
import logging
import os
import signal
import socket
import sys
import traceback
from itertools import count
from time import time
from celery import current_app
from celery.exceptions import TimeoutError
from celery.app.control import flatten_reply
from celery.utils.imports import qualname
from celery.tests.case import Case
HOSTNAME = socket.gethostname()
def say(msg):
sys.stderr.write('%s\n' % msg)
def try_while(fun, reason='Timed out', timeout=10, interval=0.5):
time_start = time()
for iterations in count(0):
if time() - time_start >= timeout:
raise TimeoutError()
ret = fun()
if ret:
return ret
class Worker(object):
started = False
worker_ids = count(1)
_shutdown_called = False
def __init__(self, hostname, loglevel='error', app=None):
self.hostname = hostname
self.loglevel = loglevel
self.app = app or current_app._get_current_object()
def start(self):
if not self.started:
self._fork_and_exec()
self.started = True
def _fork_and_exec(self):
pid = os.fork()
if pid == 0:
self.app.worker_main(['worker', '--loglevel=INFO',
'-n', self.hostname,
'-P', 'solo'])
os._exit(0)
self.pid = pid
def ping(self, *args, **kwargs):
return self.app.control.ping(*args, **kwargs)
def is_alive(self, timeout=1):
r = self.ping(destination=[self.hostname], timeout=timeout)
return self.hostname in flatten_reply(r)
def wait_until_started(self, timeout=10, interval=0.5):
try_while(
lambda: self.is_alive(interval),
"Worker won't start (after %s secs.)" % timeout,
interval=interval, timeout=timeout,
)
say('--WORKER %s IS ONLINE--' % self.hostname)
def ensure_shutdown(self, timeout=10, interval=0.5):
os.kill(self.pid, signal.SIGTERM)
try_while(
lambda: not self.is_alive(interval),
"Worker won't shutdown (after %s secs.)" % timeout,
timeout=10, interval=0.5,
)
say('--WORKER %s IS SHUTDOWN--' % self.hostname)
self._shutdown_called = True
def ensure_started(self):
self.start()
self.wait_until_started()
@classmethod
def managed(cls, hostname=None, caller=None):
hostname = hostname or socket.gethostname()
if caller:
hostname = '.'.join([qualname(caller), hostname])
else:
hostname += str(next(cls.worker_ids()))
worker = cls(hostname)
worker.ensure_started()
stack = traceback.format_stack()
@atexit.register
def _ensure_shutdown_once():
if not worker._shutdown_called:
say('-- Found worker not stopped at shutdown: %s\n%s' % (
worker.hostname,
'\n'.join(stack)))
worker.ensure_shutdown()
return worker
class WorkerCase(Case):
hostname = HOSTNAME
worker = None
@classmethod
def setUpClass(cls):
logging.getLogger('amqp').setLevel(logging.ERROR)
cls.worker = Worker.managed(cls.hostname, caller=cls)
@classmethod
def tearDownClass(cls):
cls.worker.ensure_shutdown()
def assertWorkerAlive(self, timeout=1):
self.assertTrue(self.worker.is_alive)
def inspect(self, timeout=1):
return self.app.control.inspect([self.worker.hostname],
timeout=timeout)
def my_response(self, response):
return flatten_reply(response)[self.worker.hostname]
def is_accepted(self, task_id, interval=0.5):
active = self.inspect(timeout=interval).active()
if active:
for task in active[self.worker.hostname]:
if task['id'] == task_id:
return True
return False
def is_reserved(self, task_id, interval=0.5):
reserved = self.inspect(timeout=interval).reserved()
if reserved:
for task in reserved[self.worker.hostname]:
if task['id'] == task_id:
return True
return False
def is_scheduled(self, task_id, interval=0.5):
schedule = self.inspect(timeout=interval).scheduled()
if schedule:
for item in schedule[self.worker.hostname]:
if item['request']['id'] == task_id:
return True
return False
def is_received(self, task_id, interval=0.5):
return (self.is_reserved(task_id, interval) or
self.is_scheduled(task_id, interval) or
self.is_accepted(task_id, interval))
def ensure_accepted(self, task_id, interval=0.5, timeout=10):
return try_while(lambda: self.is_accepted(task_id, interval),
'Task not accepted within timeout',
interval=0.5, timeout=10)
def ensure_received(self, task_id, interval=0.5, timeout=10):
return try_while(lambda: self.is_received(task_id, interval),
'Task not receied within timeout',
interval=0.5, timeout=10)
def ensure_scheduled(self, task_id, interval=0.5, timeout=10):
return try_while(lambda: self.is_scheduled(task_id, interval),
'Task not scheduled within timeout',
interval=0.5, timeout=10)
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