def test_clears_lock_if_change_power_state_fails(self):
class TestException(Exception):
pass
pcs = self.patch_autospec(power, "power_change_starting")
pcs.return_value = fail(TestException("boom"))
system_id = factory.make_name("system_id")
hostname = factory.make_hostname()
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable]
)
power_change = random.choice(["on", "off", "cycle"])
context = sentinel.context
logger = self.useFixture(TwistedLoggerFixture())
yield power.maybe_change_power_state(
system_id, hostname, power_driver.name, power_change, context
)
self.assertNotIn(system_id, power.power_action_registry)
self.assertDocTestMatches(
"""\
%s: Power %s failed.
Traceback (most recent call last):
...
%s.TestException: boom
"""
% (hostname, power_change, __name__),
logger.dump(),
)
def test_calls_change_power_state_later(self):
self.patch_methods_using_rpc()
system_id = factory.make_name("system_id")
hostname = factory.make_name("hostname")
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable]
)
power_change = random.choice(["on", "off", "cycle"])
context = {
factory.make_name("context-key"): factory.make_name("context-val")
}
yield power.maybe_change_power_state(
system_id, hostname, power_driver.name, power_change, context
)
self.assertThat(
power.change_power_state,
MockCalledOnceWith(
system_id,
hostname,
power_driver.name,
power_change,
context,
power.reactor,
),
)
def test_clears_lock_if_change_power_state_is_cancelled(self):
# Patch in an unfired Deferred here. This will pause the call so that
# we can grab the delayed call from the registry in time to cancel it.
self.patch_autospec(power, 'change_power_state')
power.change_power_state.return_value = Deferred()
self.patch_autospec(power, 'power_change_failure')
system_id = factory.make_name('system_id')
hostname = factory.make_hostname()
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(['on', 'off', 'cycle'])
context = sentinel.context
logger = self.useFixture(TwistedLoggerFixture())
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
# Get the Deferred from the registry and cancel it.
_, d = power.power_action_registry[system_id]
d.cancel()
yield d
self.assertNotIn(system_id, power.power_action_registry)
self.assertDocTestMatches(
"""\
%s: Power could not be set to %s; timed out.
""" % (hostname, power_change), logger.dump())
self.assertThat(
power.power_change_failure,
MockCalledOnceWith(system_id, hostname, power_change, "Timed out"))
def test_clears_lock_if_change_power_state_fails(self):
class TestException(Exception):
pass
pcs = self.patch_autospec(power, 'power_change_starting')
pcs.return_value = fail(TestException('boom'))
system_id = factory.make_name('system_id')
hostname = factory.make_hostname()
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(['on', 'off', 'cycle'])
context = sentinel.context
logger = self.useFixture(TwistedLoggerFixture())
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
reactor.runUntilCurrent() # Run all delayed calls.
self.assertNotIn(system_id, power.power_action_registry)
self.assertDocTestMatches(
"""\
%s: Power %s failed.
Traceback (most recent call last):
...
%s.TestException: boom
""" % (hostname, power_change, __name__), logger.dump())
def test_calls_change_power_state_with_timeout(self):
self.patch_methods_using_rpc()
defer_with_timeout = self.patch(power, "deferWithTimeout")
system_id = factory.make_name("system_id")
hostname = factory.make_name("hostname")
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable]
)
power_change = random.choice(["on", "off", "cycle"])
context = {
factory.make_name("context-key"): factory.make_name("context-val")
}
yield power.maybe_change_power_state(
system_id, hostname, power_driver.name, power_change, context
)
self.assertThat(
defer_with_timeout,
MockCalledOnceWith(
power.CHANGE_POWER_STATE_TIMEOUT,
power.change_power_state,
system_id,
hostname,
power_driver.name,
power_change,
context,
power.reactor,
),
)
def test_always_returns_deferred(self):
clock = Clock()
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
d = power.maybe_change_power_state(sentinel.system_id,
sentinel.hostname,
power_driver.name,
random.choice(("on", "off")),
sentinel.context,
clock=clock)
self.assertThat(d, IsInstance(Deferred))
def test_clears_lock_if_change_power_state_success(self):
self.patch_methods_using_rpc()
system_id = factory.make_name('system_id')
hostname = factory.make_name('hostname')
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(['on', 'off', 'cycle'])
context = {
factory.make_name('context-key'): factory.make_name('context-val')
}
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
self.assertNotIn(system_id, power.power_action_registry)
def test_checks_missing_packages(self):
self.patch_methods_using_rpc()
system_id = factory.make_name('system_id')
hostname = factory.make_name('hostname')
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(['on', 'off', 'cycle'])
context = {
factory.make_name('context-key'): factory.make_name('context-val')
}
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
self.assertThat(power_driver.detect_missing_packages,
MockCalledOnceWith())
def test_clears_lock_if_change_power_state_success(self):
self.patch_methods_using_rpc()
system_id = factory.make_name("system_id")
hostname = factory.make_name("hostname")
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(["on", "off", "cycle"])
context = {
factory.make_name("context-key"): factory.make_name("context-val")
}
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
self.assertNotIn(system_id, power.power_action_registry)
def test_does_nothing_when_change_matches_in_progress_change(self):
system_id = factory.make_name('system_id')
hostname = factory.make_name('hostname')
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
current_power_change = power_change = (random.choice(
['on', 'off', 'cycle']))
context = {
factory.make_name('context-key'): factory.make_name('context-val')
}
power.power_action_registry[system_id] = (current_power_change,
sentinel.d)
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
self.assertThat(power.power_action_registry,
Equals({system_id: (power_change, sentinel.d)}))
def test_errors_when_change_conflicts_with_in_progress_change(self):
system_id = factory.make_name('system_id')
hostname = factory.make_name('hostname')
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_changes = ['on', 'off']
random.shuffle(power_changes)
current_power_change, power_change = power_changes
context = {
factory.make_name('context-key'): factory.make_name('context-val')
}
power.power_action_registry[system_id] = (current_power_change,
sentinel.d)
with ExpectedException(exceptions.PowerActionAlreadyInProgress):
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name,
power_change, context)
def test_errors_when_missing_packages(self):
self.patch_methods_using_rpc()
system_id = factory.make_name("system_id")
hostname = factory.make_name("hostname")
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(["on", "off", "cycle"])
context = {
factory.make_name("context-key"): factory.make_name("context-val")
}
power_driver.detect_missing_packages.return_value = ["gone"]
with ExpectedException(exceptions.PowerActionFail):
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name,
power_change, context)
self.assertThat(power_driver.detect_missing_packages,
MockCalledOnceWith())
def test_adds_action_to_registry(self):
self.patch_methods_using_rpc()
system_id = factory.make_name('system_id')
hostname = factory.make_name('hostname')
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(['on', 'off', 'cycle'])
context = {
factory.make_name('context-key'): factory.make_name('context-val')
}
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
self.assertEqual({system_id: (power_change, ANY)},
power.power_action_registry)
reactor.runUntilCurrent() # Run all delayed calls.
self.assertEqual({}, power.power_action_registry)
def test_clears_lock_if_change_power_state_is_cancelled(self):
# Patch in an unfired Deferred here. This will pause the call so that
# we can grab the delayed call from the registry in time to cancel it.
self.patch_autospec(power, "change_power_state")
power.change_power_state.return_value = Deferred()
self.patch_autospec(power, "power_change_failure")
system_id = factory.make_name("system_id")
hostname = factory.make_hostname()
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable]
)
power_change = random.choice(["on", "off", "cycle"])
context = sentinel.context
logger = self.useFixture(TwistedLoggerFixture())
ret = yield power.maybe_change_power_state(
system_id, hostname, power_driver.name, power_change, context
)
# Get the Deferred from the registry and cancel it.
_, d = power.power_action_registry[system_id]
d.cancel()
yield d
# LP: #1761600 - If the deferLater value is returned the RPC call waits
# for the power change to complete. This holds up the UI. Make sure
# nothing is returned.
self.assertIsNone(ret)
self.assertNotIn(system_id, power.power_action_registry)
self.assertDocTestMatches(
"""\
%s: Power could not be set to %s; timed out.
"""
% (hostname, power_change),
logger.dump(),
)
self.assertThat(
power.power_change_failure,
MockCalledOnceWith(system_id, hostname, power_change, "Timed out"),
)
def test_calls_change_power_state_later(self):
self.patch_methods_using_rpc()
system_id = factory.make_name('system_id')
hostname = factory.make_name('hostname')
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(['on', 'off', 'cycle'])
context = {
factory.make_name('context-key'): factory.make_name('context-val')
}
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
reactor.runUntilCurrent() # Run all delayed calls.
self.assertThat(
power.change_power_state,
MockCalledOnceWith(system_id, hostname, power_driver.name,
power_change, context, power.reactor))
def test_does_nothing_when_change_matches_in_progress_change(self):
system_id = factory.make_name("system_id")
hostname = factory.make_name("hostname")
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
current_power_change = power_change = random.choice(
["on", "off", "cycle"])
context = {
factory.make_name("context-key"): factory.make_name("context-val")
}
power.power_action_registry[system_id] = (
current_power_change,
sentinel.d,
)
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
self.assertThat(
power.power_action_registry,
Equals({system_id: (power_change, sentinel.d)}),
)
def test__calls_change_power_state_with_timeout(self):
self.patch_methods_using_rpc()
defer_with_timeout = self.patch(power, 'deferWithTimeout')
system_id = factory.make_name('system_id')
hostname = factory.make_name('hostname')
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(['on', 'off', 'cycle'])
context = {
factory.make_name('context-key'): factory.make_name('context-val')
}
yield power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
self.assertThat(
defer_with_timeout,
MockCalledOnceWith(power.CHANGE_POWER_STATE_TIMEOUT,
power.change_power_state, system_id, hostname,
power_driver.name, power_change, context,
power.reactor))
def test_adds_action_to_registry(self):
self.patch_methods_using_rpc()
system_id = factory.make_name("system_id")
hostname = factory.make_name("hostname")
power_driver = random.choice(
[driver for _, driver in PowerDriverRegistry if driver.queryable])
power_change = random.choice(["on", "off", "cycle"])
context = {
factory.make_name("context-key"): factory.make_name("context-val")
}
d = power.maybe_change_power_state(system_id, hostname,
power_driver.name, power_change,
context)
# XXX - maybe_change_power_state is resolving before the yield. This
# causes power.power_action_registry to be reset before it can be
# checked.
# self.assertEqual(
# {system_id: (power_change, ANY)},
# power.power_action_registry)
yield d
self.assertEqual({}, power.power_action_registry)