salt/tests/unit/utils/process_test.py
2015-01-30 22:25:05 +00:00

133 lines
4.1 KiB
Python

# -*- coding: utf-8 -*-
# Import python libs
from __future__ import absolute_import
import os
import time
import signal
import multiprocessing
# Import Salt Testing libs
from salttesting import TestCase
from salttesting.helpers import ensure_in_syspath
ensure_in_syspath('../../')
# Import salt libs
import salt.utils.process
# Import 3rd-party libs
import salt.ext.six as six
from salt.ext.six.moves import range # pylint: disable=import-error,redefined-builtin
class TestProcessManager(TestCase):
def test_basic(self):
'''
Make sure that the process is alive 2s later
'''
def spin():
while True:
time.sleep(1)
process_manager = salt.utils.process.ProcessManager()
process_manager.add_process(spin)
initial_pid = next(six.iterkeys(process_manager._process_map))
time.sleep(2)
process_manager.check_children()
assert initial_pid == next(six.iterkeys(process_manager._process_map))
process_manager.kill_children()
def test_kill(self):
def spin():
while True:
time.sleep(1)
process_manager = salt.utils.process.ProcessManager()
process_manager.add_process(spin)
initial_pid = next(six.iterkeys(process_manager._process_map))
# kill the child
os.kill(initial_pid, signal.SIGTERM)
# give the OS time to give the signal...
time.sleep(0.1)
process_manager.check_children()
assert initial_pid != next(six.iterkeys(process_manager._process_map))
process_manager.kill_children()
def test_restarting(self):
'''
Make sure that the process is alive 2s later
'''
def die():
time.sleep(1)
process_manager = salt.utils.process.ProcessManager()
process_manager.add_process(die)
initial_pid = next(six.iterkeys(process_manager._process_map))
time.sleep(2)
process_manager.check_children()
assert initial_pid != next(six.iterkeys(process_manager._process_map))
process_manager.kill_children()
def test_counter(self):
def incr(counter, num):
for _ in range(0, num):
counter.value += 1
counter = multiprocessing.Value('i', 0)
process_manager = salt.utils.process.ProcessManager()
process_manager.add_process(incr, args=(counter, 2))
time.sleep(1)
process_manager.check_children()
time.sleep(1)
# we should have had 2 processes go at it
assert counter.value == 4
process_manager.kill_children()
class TestThreadPool(TestCase):
def test_basic(self):
'''
Make sure the threadpool can do things
'''
def incr_counter(counter):
counter.value += 1
counter = multiprocessing.Value('i', 0)
pool = salt.utils.process.ThreadPool()
sent = pool.fire_async(incr_counter, args=(counter,))
self.assertTrue(sent)
time.sleep(1) # Sleep to let the threads do things
self.assertEqual(counter.value, 1)
self.assertEqual(pool._job_queue.qsize(), 0)
def test_full_queue(self):
'''
Make sure that a full threadpool acts as we expect
'''
def incr_counter(counter):
counter.value += 1
counter = multiprocessing.Value('i', 0)
# Create a pool with no workers and 1 queue size
pool = salt.utils.process.ThreadPool(0, 1)
# make sure we can put the one item in
sent = pool.fire_async(incr_counter, args=(counter,))
self.assertTrue(sent)
# make sure we can't put more in
sent = pool.fire_async(incr_counter, args=(counter,))
self.assertFalse(sent)
time.sleep(1) # Sleep to let the threads do things
# make sure no one updated the counter
self.assertEqual(counter.value, 0)
# make sure the queue is still full
self.assertEqual(pool._job_queue.qsize(), 1)
if __name__ == '__main__':
from integration import run_tests
run_tests(
[TestProcessManager, TestThreadPool],
needs_daemon=False
)