def test_read_request_load_succeeds(self):
"""
ReadRequestLoadScenario starts and stops without collapsing.
"""
c = Clock()
node1 = Node(uuid=uuid4(), public_address=IPAddress('10.0.0.1'))
node2 = Node(uuid=uuid4(), public_address=IPAddress('10.0.0.2'))
cluster = BenchmarkCluster(
node1.public_address,
lambda reactor: FakeFlockerClient([node1, node2]),
{node1.public_address, node2.public_address},
default_volume_size=DEFAULT_VOLUME_SIZE
)
sample_size = 5
s = ReadRequestLoadScenario(c, cluster, sample_size=sample_size)
d = s.start()
# Request rate samples are recorded every second and we need to
# collect enough samples to establish the rate which is defined
# by `sample_size`. Therefore, advance the clock by
# `sample_size` seconds to obtain enough samples.
c.pump(repeat(1, sample_size))
s.maintained().addBoth(lambda x: self.fail())
d.addCallback(lambda ignored: s.stop())
self.successResultOf(d)
def test_read_request_load_succeeds(self):
"""
ReadRequestLoadScenario starts and stops without collapsing.
"""
c = Clock()
node1 = Node(uuid=uuid4(), public_address=IPAddress('10.0.0.1'))
node2 = Node(uuid=uuid4(), public_address=IPAddress('10.0.0.2'))
cluster = BenchmarkCluster(
node1.public_address,
lambda reactor: FakeFlockerClient([node1, node2]),
{node1.public_address, node2.public_address},
default_volume_size=DEFAULT_VOLUME_SIZE)
sample_size = 5
s = ReadRequestLoadScenario(c, cluster, sample_size=sample_size)
d = s.start()
# Request rate samples are recorded every second and we need to
# collect enough samples to establish the rate which is defined
# by `sample_size`. Therefore, advance the clock by
# `sample_size` seconds to obtain enough samples.
c.pump(repeat(1, sample_size))
s.maintained().addBoth(lambda x: self.fail())
d.addCallback(lambda ignored: s.stop())
self.successResultOf(d)
def test_scenario_timeouts_if_requests_not_completed(self):
"""
`ReadRequestLoadScenario` should timeout if the outstanding
requests for the scenarion do not complete within the specified
time.
"""
c = Clock()
cluster = self.make_cluster(RequestErrorFakeFlockerClient)
sample_size = 5
s = ReadRequestLoadScenario(c,
cluster,
request_rate=10,
sample_size=sample_size)
# Set the delay for the requests to be longer than the scenario
# timeout
cluster.get_control_service(c).delay = s.timeout + 10
d = s.start()
s.maintained().addBoth(lambda x: self.fail())
# Advance the clock by `sample_size` seconds to establish the
# requested rate.
c.pump(repeat(1, sample_size))
cluster.get_control_service(c).fail_requests = True
c.advance(1)
cluster.get_control_service(c).fail_requests = False
d.addCallback(lambda ignored: s.stop())
# Advance the clock by the timeout value so it is triggered
# before the requests complete.
self.assertNoResult(d)
c.advance(s.timeout + 1)
self.assertTrue(s.rate_measurer.outstanding() > 0)
self.successResultOf(d)
def test_scenario_stops_only_when_no_outstanding_requests(self):
"""
`ReadRequestLoadScenario` should only be considered as stopped
when all outstanding requests made by it have completed.
"""
c = Clock()
cluster = self.make_cluster(RequestErrorFakeFlockerClient)
delay = 1
cluster.get_control_service(c).delay = delay
sample_size = 5
s = ReadRequestLoadScenario(c,
cluster,
request_rate=10,
sample_size=sample_size)
d = s.start()
s.maintained().addBoth(lambda x: self.fail())
# Advance the clock by `sample_size` seconds to establish the
# requested rate.
c.pump(repeat(1, sample_size))
# Force the control service to fail requests for one second.
# These requests will fail after the delay period set in the
# control service.
cluster.get_control_service(c).fail_requests = True
c.advance(1)
cluster.get_control_service(c).fail_requests = False
d.addCallback(lambda ignored: s.stop())
# The scenario should not successfully stop until after the
# delay period for the failed requests.
self.assertNoResult(d)
c.advance(delay)
self.successResultOf(d)
def test_scenario_timeouts_if_requests_not_completed(self):
"""
`ReadRequestLoadScenario` should timeout if the outstanding
requests for the scenarion do not complete within the specified
time.
"""
c = Clock()
cluster = self.make_cluster(RequestErrorFakeFlockerClient)
sample_size = 5
s = ReadRequestLoadScenario(
c, cluster, request_rate=10, sample_size=sample_size
)
# Set the delay for the requests to be longer than the scenario
# timeout
cluster.get_control_service(c).delay = s.timeout + 10
d = s.start()
s.maintained().addBoth(lambda x: self.fail())
# Advance the clock by `sample_size` seconds to establish the
# requested rate.
c.pump(repeat(1, sample_size))
cluster.get_control_service(c).fail_requests = True
c.advance(1)
cluster.get_control_service(c).fail_requests = False
d.addCallback(lambda ignored: s.stop())
# Advance the clock by the timeout value so it is triggered
# before the requests complete.
self.assertNoResult(d)
c.advance(s.timeout + 1)
self.assertTrue(s.rate_measurer.outstanding() > 0)
self.successResultOf(d)
def test_scenario_stops_only_when_no_outstanding_requests(self):
"""
`ReadRequestLoadScenario` should only be considered as stopped
when all outstanding requests made by it have completed.
"""
c = Clock()
cluster = self.make_cluster(RequestErrorFakeFlockerClient)
delay = 1
cluster.get_control_service(c).delay = delay
sample_size = 5
s = ReadRequestLoadScenario(
c, cluster, request_rate=10, sample_size=sample_size
)
d = s.start()
s.maintained().addBoth(lambda x: self.fail())
# Advance the clock by `sample_size` seconds to establish the
# requested rate.
c.pump(repeat(1, sample_size))
# Force the control service to fail requests for one second.
# These requests will fail after the delay period set in the
# control service.
cluster.get_control_service(c).fail_requests = True
c.advance(1)
cluster.get_control_service(c).fail_requests = False
d.addCallback(lambda ignored: s.stop())
# The scenario should not successfully stop until after the
# delay period for the failed requests.
self.assertNoResult(d)
c.advance(delay)
self.successResultOf(d)
