class WeakLocksTests(SynchronousTestCase):
"""
Tests for `WeakLocks`
"""
def setUp(self):
"""
Sample `WeakLocks` object
"""
self.locks = WeakLocks()
def test_returns_deferlock(self):
"""
`get_lock` returns a `DeferredLock`
"""
self.assertIsInstance(self.locks.get_lock('a'), DeferredLock)
def test_same_lock(self):
"""
`get_lock` on same uuid returns same `DeferredLock`
"""
self.assertIs(self.locks.get_lock('a'), self.locks.get_lock('a'))
def test_diff_lock(self):
"""
`get_lock` on different uuid returns different `DeferredLock`
"""
self.assertIsNot(self.locks.get_lock('a'), self.locks.get_lock('b'))
class WeakLocksTests(SynchronousTestCase):
"""
Tests for `WeakLocks`
"""
def setUp(self):
"""
Sample `WeakLocks` object
"""
self.locks = WeakLocks()
def test_returns_deferlock(self):
"""
`get_lock` returns a `DeferredLock`
"""
self.assertIsInstance(self.locks.get_lock('a'), DeferredLock)
def test_same_lock(self):
"""
`get_lock` on same uuid returns same `DeferredLock`
"""
self.assertIs(self.locks.get_lock('a'), self.locks.get_lock('a'))
def test_diff_lock(self):
"""
`get_lock` on different uuid returns different `DeferredLock`
"""
self.assertIsNot(self.locks.get_lock('a'), self.locks.get_lock('b'))
def _test_throttle(self, cfg_name, stype, method):
"""Test a specific throttling configuration."""
locks = WeakLocks()
set_config_data({'cloud_client': {'throttling': {cfg_name: 500}}})
self.addCleanup(set_config_data, {})
clock = Clock()
bracket = _default_throttler(locks, clock, stype, method, 'tenant1')
if bracket is None:
self.fail("No throttler for %s and %s" % (stype, method))
d = bracket(lambda: 'foo')
clock.advance(499)
self.assertNoResult(d)
clock.advance(500)
self.assertEqual(self.successResultOf(d), 'foo')
# also make sure that the lock is shared between different calls to the
# throttler.
bracket1 = _default_throttler(locks, clock, stype, method, 'tenant1')
result1 = bracket1(lambda: 'bar1')
bracket2 = _default_throttler(locks, clock, stype, method, 'tenant1')
result2 = bracket2(lambda: 'bar2')
clock.advance(499)
self.assertNoResult(result1)
self.assertNoResult(result2)
clock.advance(1)
self.assertEqual(self.successResultOf(result1), 'bar1')
self.assertNoResult(result2)
clock.advance(500)
self.assertEqual(self.successResultOf(result2), 'bar2')
def get_cloud_client_dispatcher(reactor, authenticator, log, service_configs):
"""
Get a dispatcher suitable for running :obj:`ServiceRequest` and
:obj:`TenantScope` intents.
"""
# this throttler could be parameterized but for now it's basically a hack
# that we want to keep private to this module
throttler = partial(_default_throttler, WeakLocks(), reactor)
return TypeDispatcher({
TenantScope: partial(perform_tenant_scope, authenticator, log,
service_configs, throttler),
_Throttle: _perform_throttle,
})
def test_post_and_delete_not_the_same(self):
"""
The throttlers for POST and DELETE to cloud servers are different.
"""
set_config_data({
"cloud_client": {
"throttling": {
"create_server_delay": 1,
"delete_server_delay": 0.4
}
}
})
clock = Clock()
locks = WeakLocks()
deleter = _default_throttler(locks, clock, ServiceType.CLOUD_SERVERS,
'delete', 'any-tenant')
poster = _default_throttler(locks, clock, ServiceType.CLOUD_SERVERS,
'post', 'any-tenant')
self.assertIsNot(deleter, poster)
def _test_tenant(self, cfg_name, stype, method):
"""
Test a specific throttling configuration, and ensure that locks are
per-tenant.
"""
locks = WeakLocks()
set_config_data({'cloud_client': {'throttling': {cfg_name: 500}}})
self.addCleanup(set_config_data, {})
clock = Clock()
bracket1 = _default_throttler(locks, clock, stype, method, 'tenant1')
if bracket1 is None:
self.fail("No throttler for %s and %s" % (stype, method))
result1 = bracket1(lambda: 'bar1')
bracket2 = _default_throttler(locks, clock, stype, method, 'tenant2')
result2 = bracket2(lambda: 'bar2')
self.assertNoResult(result1)
self.assertNoResult(result2)
clock.advance(500)
self.assertEqual(self.successResultOf(result1), 'bar1')
self.assertEqual(self.successResultOf(result2), 'bar2')
def test_no_config(self):
""" No config results in no throttling """
bracket = _default_throttler(WeakLocks(), None,
ServiceType.CLOUD_SERVERS, 'get',
'any-tenant')
self.assertIs(bracket, None)
def test_mismatch(self):
"""policy doesn't have a throttler for random junk."""
bracket = _default_throttler(WeakLocks(), None, 'foo', 'get',
'any-tenant')
self.assertIs(bracket, None)
def setUp(self):
"""
Sample `WeakLocks` object
"""
self.locks = WeakLocks()
def setUp(self):
"""
Sample `WeakLocks` object
"""
self.locks = WeakLocks()
