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salt/tests/unit/utils/test_event.py
Pedro Algarvio 40a64191a1
Absolute imports and A LOT of code cleanup.
2017-03-01 01:33:07 +00:00

368 lines
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Python
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# -*- coding: utf-8 -*-
'''
:codeauthor: :email:`Pedro Algarvio (pedro@algarvio.me)`
tests.unit.utils.event_test
~~~~~~~~~~~~~~~~~~~~~~~~~~~
'''
# Import python libs
from __future__ import absolute_import
import os
import hashlib
import time
from tornado.testing import AsyncTestCase
import zmq
import zmq.eventloop.ioloop
# support pyzmq 13.0.x, TODO: remove once we force people to 14.0.x
if not hasattr(zmq.eventloop.ioloop, 'ZMQIOLoop'):
zmq.eventloop.ioloop.ZMQIOLoop = zmq.eventloop.ioloop.IOLoop
from contextlib import contextmanager
from multiprocessing import Process
# Import Salt Testing libs
from tests.support.unit import expectedFailure, skipIf, TestCase
# Import salt libs
import tests.integration as integration
from salt.utils.process import clean_proc
from salt.utils import event, to_bytes
# Import 3rd-+arty libs
from salt.ext.six.moves import range # pylint: disable=import-error,redefined-builtin
SOCK_DIR = os.path.join(integration.TMP, 'test-socks')
NO_LONG_IPC = False
if getattr(zmq, 'IPC_PATH_MAX_LEN', 103) <= 103:
NO_LONG_IPC = True
@contextmanager
def eventpublisher_process():
proc = event.EventPublisher({'sock_dir': SOCK_DIR})
proc.start()
try:
if os.environ.get('TRAVIS_PYTHON_VERSION', None) is not None:
# Travis is slow
time.sleep(10)
else:
time.sleep(2)
yield
finally:
clean_proc(proc)
class EventSender(Process):
def __init__(self, data, tag, wait):
super(EventSender, self).__init__()
self.data = data
self.tag = tag
self.wait = wait
def run(self):
me = event.MasterEvent(SOCK_DIR, listen=False)
time.sleep(self.wait)
me.fire_event(self.data, self.tag)
# Wait a few seconds before tearing down the zmq context
if os.environ.get('TRAVIS_PYTHON_VERSION', None) is not None:
# Travis is slow
time.sleep(10)
else:
time.sleep(2)
@contextmanager
def eventsender_process(data, tag, wait=0):
proc = EventSender(data, tag, wait)
proc.start()
try:
yield
finally:
clean_proc(proc)
@skipIf(NO_LONG_IPC, "This system does not support long IPC paths. Skipping event tests!")
class TestSaltEvent(TestCase):
def setUp(self):
if not os.path.exists(SOCK_DIR):
os.makedirs(SOCK_DIR)
def assertGotEvent(self, evt, data, msg=None):
self.assertIsNotNone(evt, msg)
for key in data:
self.assertIn(key, evt, '{0}: Key {1} missing'.format(msg, key))
assertMsg = '{0}: Key {1} value mismatch, {2} != {3}'
assertMsg = assertMsg.format(msg, key, data[key], evt[key])
self.assertEqual(data[key], evt[key], assertMsg)
def test_master_event(self):
me = event.MasterEvent(SOCK_DIR, listen=False)
self.assertEqual(
me.puburi, '{0}'.format(
os.path.join(SOCK_DIR, 'master_event_pub.ipc')
)
)
self.assertEqual(
me.pulluri,
'{0}'.format(
os.path.join(SOCK_DIR, 'master_event_pull.ipc')
)
)
def test_minion_event(self):
opts = dict(id='foo', sock_dir=SOCK_DIR)
id_hash = hashlib.sha256(to_bytes(opts['id'])).hexdigest()[:10]
me = event.MinionEvent(opts, listen=False)
self.assertEqual(
me.puburi,
'{0}'.format(
os.path.join(
SOCK_DIR, 'minion_event_{0}_pub.ipc'.format(id_hash)
)
)
)
self.assertEqual(
me.pulluri,
'{0}'.format(
os.path.join(
SOCK_DIR, 'minion_event_{0}_pull.ipc'.format(id_hash)
)
)
)
def test_minion_event_tcp_ipc_mode(self):
opts = dict(id='foo', ipc_mode='tcp')
me = event.MinionEvent(opts, listen=False)
self.assertEqual(me.puburi, 4510)
self.assertEqual(me.pulluri, 4511)
def test_minion_event_no_id(self):
me = event.MinionEvent(dict(sock_dir=SOCK_DIR), listen=False)
id_hash = hashlib.sha256(to_bytes('')).hexdigest()[:10]
self.assertEqual(
me.puburi,
'{0}'.format(
os.path.join(
SOCK_DIR, 'minion_event_{0}_pub.ipc'.format(id_hash)
)
)
)
self.assertEqual(
me.pulluri,
'{0}'.format(
os.path.join(
SOCK_DIR, 'minion_event_{0}_pull.ipc'.format(id_hash)
)
)
)
def test_event_single(self):
'''Test a single event is received'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
evt1 = me.get_event(tag='evt1')
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_single_no_block(self):
'''Test a single event is received, no block'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
start = time.time()
finish = start + 5
evt1 = me.get_event(wait=0, tag='evt1', no_block=True)
# We should get None and way before the 5 seconds wait since it's
# non-blocking, otherwise it would wait for an event which we
# didn't even send
self.assertIsNone(evt1, None)
self.assertLess(start, finish)
me.fire_event({'data': 'foo1'}, 'evt1')
evt1 = me.get_event(wait=0, tag='evt1')
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_single_wait_0_no_block_False(self):
'''Test a single event is received with wait=0 and no_block=False and doesn't spin the while loop'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
# This is too fast and will be None but assures we're not blocking
evt1 = me.get_event(wait=0, tag='evt1', no_block=False)
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_timeout(self):
'''Test no event is received if the timeout is reached'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
evt1 = me.get_event(tag='evt1')
self.assertGotEvent(evt1, {'data': 'foo1'})
evt2 = me.get_event(tag='evt1')
self.assertIsNone(evt2)
def test_event_no_timeout(self):
'''Test no wait timeout, we should block forever, until we get one '''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
with eventsender_process({'data': 'foo2'}, 'evt2', 5):
evt = me.get_event(tag='evt2', wait=0, no_block=False)
self.assertGotEvent(evt, {'data': 'foo2'})
def test_event_matching(self):
'''Test a startswith match'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
evt1 = me.get_event(tag='ev')
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_matching_regex(self):
'''Test a regex match'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
evt1 = me.get_event(tag='^ev', match_type='regex')
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_matching_all(self):
'''Test an all match'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
evt1 = me.get_event(tag='')
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_matching_all_when_tag_is_None(self):
'''Test event matching all when not passing a tag'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
evt1 = me.get_event()
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_not_subscribed(self):
'''Test get_event drops non-subscribed events'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
me.fire_event({'data': 'foo2'}, 'evt2')
evt2 = me.get_event(tag='evt2')
evt1 = me.get_event(tag='evt1')
self.assertGotEvent(evt2, {'data': 'foo2'})
self.assertIsNone(evt1)
def test_event_subscription_cache(self):
'''Test subscriptions cache a message until requested'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.subscribe('evt1')
me.fire_event({'data': 'foo1'}, 'evt1')
me.fire_event({'data': 'foo2'}, 'evt2')
evt2 = me.get_event(tag='evt2')
evt1 = me.get_event(tag='evt1')
self.assertGotEvent(evt2, {'data': 'foo2'})
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_subscriptions_cache_regex(self):
'''Test regex subscriptions cache a message until requested'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.subscribe('e..1$', 'regex')
me.fire_event({'data': 'foo1'}, 'evt1')
me.fire_event({'data': 'foo2'}, 'evt2')
evt2 = me.get_event(tag='evt2')
evt1 = me.get_event(tag='evt1')
self.assertGotEvent(evt2, {'data': 'foo2'})
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_multiple_clients(self):
'''Test event is received by multiple clients'''
with eventpublisher_process():
me1 = event.MasterEvent(SOCK_DIR, listen=True)
me2 = event.MasterEvent(SOCK_DIR, listen=True)
# We need to sleep here to avoid a race condition wherein
# the second socket may not be connected by the time the first socket
# sends the event.
time.sleep(0.5)
me1.fire_event({'data': 'foo1'}, 'evt1')
evt1 = me1.get_event(tag='evt1')
self.assertGotEvent(evt1, {'data': 'foo1'})
evt2 = me2.get_event(tag='evt1')
self.assertGotEvent(evt2, {'data': 'foo1'})
@expectedFailure
def test_event_nested_sub_all(self):
'''Test nested event subscriptions do not drop events, get event for all tags'''
# Show why not to call get_event(tag='')
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
me.fire_event({'data': 'foo2'}, 'evt2')
evt2 = me.get_event(tag='')
evt1 = me.get_event(tag='')
self.assertGotEvent(evt2, {'data': 'foo2'})
self.assertGotEvent(evt1, {'data': 'foo1'})
def test_event_many(self):
'''Test a large number of events, one at a time'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
for i in range(500):
me.fire_event({'data': '{0}'.format(i)}, 'testevents')
evt = me.get_event(tag='testevents')
self.assertGotEvent(evt, {'data': '{0}'.format(i)}, 'Event {0}'.format(i))
def test_event_many_backlog(self):
'''Test a large number of events, send all then recv all'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
# Must not exceed zmq HWM
for i in range(500):
me.fire_event({'data': '{0}'.format(i)}, 'testevents')
for i in range(500):
evt = me.get_event(tag='testevents')
self.assertGotEvent(evt, {'data': '{0}'.format(i)}, 'Event {0}'.format(i))
# Test the fire_master function. As it wraps the underlying fire_event,
# we don't need to perform extensive testing.
def test_send_master_event(self):
'''Tests that sending an event through fire_master generates expected event'''
with eventpublisher_process():
me = event.MasterEvent(SOCK_DIR, listen=True)
data = {'data': 'foo1'}
me.fire_master(data, 'test_master')
evt = me.get_event(tag='fire_master')
self.assertGotEvent(evt, {'data': data, 'tag': 'test_master', 'events': None, 'pretag': None})
class TestAsyncEventPublisher(AsyncTestCase):
def get_new_ioloop(self):
return zmq.eventloop.ioloop.ZMQIOLoop()
def setUp(self):
super(TestAsyncEventPublisher, self).setUp()
self.opts = {'sock_dir': SOCK_DIR}
self.publisher = event.AsyncEventPublisher(
self.opts,
self.io_loop,
)
self.event = event.get_event('minion', opts=self.opts, io_loop=self.io_loop)
self.event.subscribe('')
self.event.set_event_handler(self._handle_publish)
def _handle_publish(self, raw):
self.tag, self.data = event.SaltEvent.unpack(raw)
self.stop()
def test_event_subscription(self):
'''Test a single event is received'''
me = event.MinionEvent(self.opts, listen=True)
me.fire_event({'data': 'foo1'}, 'evt1')
self.wait()
evt1 = me.get_event(tag='evt1')
self.assertEqual(self.tag, 'evt1')
self.data.pop('_stamp') # drop the stamp
self.assertEqual(self.data, {'data': 'foo1'})
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