def _create_stubs(self, key_name='test', stub_meta=True):
self.m.StubOutWithMock(user.User, 'keystone')
user.User.keystone().AndReturn(self.fkc)
self.m.StubOutWithMock(user.AccessKey, 'keystone')
user.AccessKey.keystone().AndReturn(self.fkc)
self.m.StubOutWithMock(wc.WaitConditionHandle, 'keystone')
wc.WaitConditionHandle.keystone().MultipleTimes().AndReturn(self.fkc)
server_name = utils.PhysName(
utils.PhysName('test_stack', 'LoadBalancer'), 'LB_instance')
clients.OpenStackClients.nova("compute").MultipleTimes().AndReturn(
self.fc)
self.fc.servers.create(flavor=2,
image=745,
key_name=key_name,
meta=None,
nics=None,
name=server_name,
scheduler_hints=None,
userdata=mox.IgnoreArg(),
security_groups=None,
availability_zone=None).AndReturn(
self.fc.servers.list()[1])
if stub_meta:
Metadata.__set__(mox.IgnoreArg(), mox.IgnoreArg()).AndReturn(None)
self.m.StubOutWithMock(wc.WaitConditionHandle, 'get_status')
wc.WaitConditionHandle.get_status().AndReturn(['SUCCESS'])
def _create_stubs(self, key_name='test', stub_meta=True):
self.m.StubOutWithMock(user.User, 'keystone')
user.User.keystone().AndReturn(self.fkc)
self.m.StubOutWithMock(user.AccessKey, 'keystone')
user.AccessKey.keystone().AndReturn(self.fkc)
self.m.StubOutWithMock(wc.WaitConditionHandle, 'keystone')
wc.WaitConditionHandle.keystone().MultipleTimes().AndReturn(self.fkc)
server_name = utils.PhysName(utils.PhysName('test_stack',
'LoadBalancer'),
'LB_instance')
clients.OpenStackClients.nova(
"compute").MultipleTimes().AndReturn(self.fc)
self.fc.servers.create(
flavor=2, image=745, key_name=key_name,
meta=None, nics=None, name=server_name,
scheduler_hints=None, userdata=mox.IgnoreArg(),
security_groups=None, availability_zone=None).AndReturn(
self.fc.servers.list()[1])
if stub_meta:
Metadata.__set__(mox.IgnoreArg(),
mox.IgnoreArg()).AndReturn(None)
self.m.StubOutWithMock(wc.WaitConditionHandle, 'get_status')
wc.WaitConditionHandle.get_status().AndReturn(['SUCCESS'])
def test_scaling_policy_cooldown_none(self):
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=self.params)
# Create initial group
self._stub_lb_reload(1)
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = rsrc
self.assertEqual(['WebServerGroup-0'], rsrc.get_instance_names())
# Create the scaling policy no Cooldown property, should behave the
# same as when Cooldown==0
properties = t['Resources']['WebServerScaleUpPolicy']['Properties']
del(properties['Cooldown'])
self._stub_lb_reload(2)
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.StubOutWithMock(asc.ScalingPolicy, 'keystone')
asc.ScalingPolicy.keystone().MultipleTimes().AndReturn(
self.fc)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.signal()
self.assertEqual(['WebServerGroup-0', 'WebServerGroup-1'],
rsrc.get_instance_names())
# Now trigger another scale-up without changing time, should work
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()
).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()
).AndReturn(previous_meta)
self._stub_lb_reload(3, unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.signal()
self.assertEqual(['WebServerGroup-0', 'WebServerGroup-1',
'WebServerGroup-2'],
rsrc.get_instance_names())
rsrc.delete()
self.m.VerifyAll()
def test_scaling_policy_cooldown_toosoon(self):
t = template_format.parse(as_template)
stack = parse_stack(t, params=self.params)
# Create initial group
self._stub_lb_reload(1)
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = rsrc
self.assertEqual('WebServerGroup-0', rsrc.resource_id)
# Scale up one
self._stub_lb_reload(2)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.StubOutWithMock(asc.ScalingPolicy, 'keystone')
asc.ScalingPolicy.keystone().MultipleTimes().AndReturn(
self.fc)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.signal()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
rsrc.resource_id)
# Now move time on 10 seconds - Cooldown in template is 60
# so this should not update the policy metadata, and the
# scaling group instances should be unchanged
# Note we have to stub Metadata.__get__ since up_policy isn't
# stored in the DB (because the stack hasn't really been created)
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=10)
self.m.StubOutWithMock(timeutils, 'utcnow')
timeutils.utcnow().MultipleTimes().AndReturn(now)
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()
).AndReturn(previous_meta)
self.m.ReplayAll()
up_policy.signal()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
rsrc.resource_id)
rsrc.delete()
self.m.VerifyAll()
def test_scaling_policy_cooldown_ok(self):
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=self.params)
# Create initial group
self._stub_lb_reload(1)
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = rsrc
self.assertEqual(['WebServerGroup-0'], rsrc.get_instance_names())
# Scale up one
self._stub_lb_reload(2)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.StubOutWithMock(asc.ScalingPolicy, 'keystone')
asc.ScalingPolicy.keystone().MultipleTimes().AndReturn(
self.fc)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.signal()
self.assertEqual(['WebServerGroup-0', 'WebServerGroup-1'],
rsrc.get_instance_names())
# Now move time on 61 seconds - Cooldown in template is 60
# so this should trigger a scale-up
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()
).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()
).AndReturn(previous_meta)
now = now + datetime.timedelta(seconds=61)
self._stub_lb_reload(3, unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.signal()
self.assertEqual(['WebServerGroup-0', 'WebServerGroup-1',
'WebServerGroup-2'],
rsrc.get_instance_names())
rsrc.delete()
self.m.VerifyAll()
def test_scaling_group_cooldown_ok(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group, 2 instances, Cooldown 60s
properties = t['Resources']['WebServerGroup']['Properties']
properties['DesiredCapacity'] = '2'
properties['Cooldown'] = '60'
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
self._stub_create(2)
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 2')
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# reduce by 50%
self._stub_lb_reload(['WebServerGroup-0'])
self._stub_meta_expected(now, 'PercentChangeInCapacity : -50')
self.m.ReplayAll()
resource.adjust(-50, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0', resource.resource_id)
# Now move time on 61 seconds - Cooldown in template is 60
# so this should update the policy metadata, and the
# scaling group instances updated
previous_meta = {
timeutils.strtime(now): 'PercentChangeInCapacity : -50'
}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=61)
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), resource,
mox.IgnoreArg()).AndReturn(previous_meta)
# raise by 200%, should work
self._stub_lb_reload(
['WebServerGroup-0', 'WebServerGroup-1', 'WebServerGroup-2'],
unset=False)
self._stub_create(2)
self._stub_meta_expected(now, 'PercentChangeInCapacity : 200')
self.m.ReplayAll()
resource.adjust(200, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
resource.resource_id)
resource.delete()
def test_scaling_policy_cooldown_none(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group
self._stub_lb_reload(['WebServerGroup-0'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0', resource.resource_id)
# Create the scaling policy no Cooldown property, should behave the
# same as when Cooldown==0
properties = t['Resources']['WebServerScaleUpPolicy']['Properties']
del (properties['Cooldown'])
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# Now trigger another scale-up without changing time, should work
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy,
mox.IgnoreArg()).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), resource,
mox.IgnoreArg()).AndReturn(previous_meta)
self._stub_lb_reload(
['WebServerGroup-0', 'WebServerGroup-1', 'WebServerGroup-2'],
unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
resource.resource_id)
resource.delete()
self.m.VerifyAll()
def test_scaling_policy_cooldown_none(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group
self._stub_lb_reload(['WebServerGroup-0'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0', resource.resource_id)
# Create the scaling policy no Cooldown property, should behave the
# same as when Cooldown==0
properties = t['Resources']['WebServerScaleUpPolicy']['Properties']
del(properties['Cooldown'])
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# Now trigger another scale-up without changing time, should work
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()
).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), resource, mox.IgnoreArg()
).AndReturn(previous_meta)
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1',
'WebServerGroup-2'], unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
resource.resource_id)
resource.delete()
self.m.VerifyAll()
def test_scaling_group_cooldown_toosoon(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group, 2 instances, Cooldown 60s
properties = t['Resources']['WebServerGroup']['Properties']
properties['DesiredCapacity'] = '2'
properties['Cooldown'] = '60'
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 2')
self._stub_create(2)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# reduce by 50%
self._stub_lb_reload(['WebServerGroup-0'])
self._stub_meta_expected(now, 'PercentChangeInCapacity : -50')
self.m.ReplayAll()
resource.adjust(-50, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0', resource.resource_id)
# Now move time on 10 seconds - Cooldown in template is 60
# so this should not update the policy metadata, and the
# scaling group instances should be unchanged
# Note we have to stub Metadata.__get__ since up_policy isn't
# stored in the DB (because the stack hasn't really been created)
previous_meta = {
timeutils.strtime(now): 'PercentChangeInCapacity : -50'
}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=10)
self.m.StubOutWithMock(timeutils, 'utcnow')
timeutils.utcnow().AndReturn(now)
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), resource,
mox.IgnoreArg()).AndReturn(previous_meta)
self.m.ReplayAll()
# raise by 200%, too soon for Cooldown so there should be no change
resource.adjust(200, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0', resource.resource_id)
resource.delete()
def test_scaling_group_cooldown_toosoon(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group, 2 instances, Cooldown 60s
properties = t['Resources']['WebServerGroup']['Properties']
properties['DesiredCapacity'] = '2'
properties['Cooldown'] = '60'
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 2')
self._stub_create(2)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# reduce by 50%
self._stub_lb_reload(['WebServerGroup-0'])
self._stub_meta_expected(now, 'PercentChangeInCapacity : -50')
self.m.ReplayAll()
resource.adjust(-50, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0',
resource.resource_id)
# Now move time on 10 seconds - Cooldown in template is 60
# so this should not update the policy metadata, and the
# scaling group instances should be unchanged
# Note we have to stub Metadata.__get__ since up_policy isn't
# stored in the DB (because the stack hasn't really been created)
previous_meta = {timeutils.strtime(now):
'PercentChangeInCapacity : -50'}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=10)
self.m.StubOutWithMock(timeutils, 'utcnow')
timeutils.utcnow().AndReturn(now)
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), resource, mox.IgnoreArg()
).AndReturn(previous_meta)
self.m.ReplayAll()
# raise by 200%, too soon for Cooldown so there should be no change
resource.adjust(200, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0', resource.resource_id)
resource.delete()
def test_scaling_group_cooldown_ok(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group, 2 instances, Cooldown 60s
properties = t['Resources']['WebServerGroup']['Properties']
properties['DesiredCapacity'] = '2'
properties['Cooldown'] = '60'
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
self._stub_create(2)
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 2')
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# reduce by 50%
self._stub_lb_reload(['WebServerGroup-0'])
self._stub_meta_expected(now, 'PercentChangeInCapacity : -50')
self.m.ReplayAll()
resource.adjust(-50, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0',
resource.resource_id)
# Now move time on 61 seconds - Cooldown in template is 60
# so this should update the policy metadata, and the
# scaling group instances updated
previous_meta = {timeutils.strtime(now):
'PercentChangeInCapacity : -50'}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=61)
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), resource, mox.IgnoreArg()
).AndReturn(previous_meta)
# raise by 200%, should work
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1',
'WebServerGroup-2'], unset=False)
self._stub_create(2)
self._stub_meta_expected(now, 'PercentChangeInCapacity : 200')
self.m.ReplayAll()
resource.adjust(200, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
resource.resource_id)
resource.delete()
def _stub_meta_expected(self, now, data, nmeta=1):
# Stop time at now
self.m.StubOutWithMock(timeutils, 'utcnow')
timeutils.utcnow().MultipleTimes().AndReturn(now)
# Then set a stub to ensure the metadata update is as
# expected based on the timestamp and data
self.m.StubOutWithMock(Metadata, '__set__')
expected = {timeutils.strtime(now): data}
# Note for ScalingPolicy, we expect to get a metadata
# update for the policy and autoscaling group, so pass nmeta=2
for x in range(nmeta):
Metadata.__set__(mox.IgnoreArg(), expected).AndReturn(None)
def _stub_meta_expected(self, now, data, nmeta=1):
# Stop time at now
self.m.StubOutWithMock(timeutils, 'utcnow')
timeutils.utcnow().MultipleTimes().AndReturn(now)
# Then set a stub to ensure the metadata update is as
# expected based on the timestamp and data
self.m.StubOutWithMock(Metadata, '__set__')
expected = {timeutils.strtime(now): data}
# Note for ScalingPolicy, we expect to get a metadata
# update for the policy and autoscaling group, so pass nmeta=2
for x in range(nmeta):
Metadata.__set__(mox.IgnoreArg(), expected).AndReturn(None)
def test_scaling_policy_cooldown_ok(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group
self._stub_lb_reload(['WebServerGroup-0'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0', resource.resource_id)
# Scale up one
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# Now move time on 61 seconds - Cooldown in template is 60
# so this should trigger a scale-up
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy,
mox.IgnoreArg()).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), resource,
mox.IgnoreArg()).AndReturn(previous_meta)
now = now + datetime.timedelta(seconds=61)
self._stub_lb_reload(
['WebServerGroup-0', 'WebServerGroup-1', 'WebServerGroup-2'],
unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
resource.resource_id)
resource.delete()
self.m.VerifyAll()
def test_scaling_group_cooldown_zero(self):
t = template_format.parse(as_template)
stack = parse_stack(t)
# Create initial group, 2 instances, Cooldown 0
properties = t['Resources']['WebServerGroup']['Properties']
properties['DesiredCapacity'] = '2'
properties['Cooldown'] = '0'
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 2')
self._stub_create(2)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# reduce by 50%
self._stub_lb_reload(['WebServerGroup-0'])
self._stub_meta_expected(now, 'PercentChangeInCapacity : -50')
self.m.ReplayAll()
resource.adjust(-50, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0', resource.resource_id)
# Don't move time, since cooldown is zero, it should work
previous_meta = {
timeutils.strtime(now): 'PercentChangeInCapacity : -50'
}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), resource,
mox.IgnoreArg()).AndReturn(previous_meta)
# raise by 200%, should work
self._stub_lb_reload(
['WebServerGroup-0', 'WebServerGroup-1', 'WebServerGroup-2'],
unset=False)
self._stub_meta_expected(now, 'PercentChangeInCapacity : 200')
self._stub_create(2)
self.m.ReplayAll()
resource.adjust(200, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
resource.resource_id)
resource.delete()
self.m.VerifyAll()
def test_scaling_policy_cooldown_ok(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group
self._stub_lb_reload(['WebServerGroup-0'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0', resource.resource_id)
# Scale up one
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# Now move time on 61 seconds - Cooldown in template is 60
# so this should trigger a scale-up
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()
).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), resource, mox.IgnoreArg()
).AndReturn(previous_meta)
now = now + datetime.timedelta(seconds=61)
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1',
'WebServerGroup-2'], unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
resource.resource_id)
resource.delete()
self.m.VerifyAll()
def test_scaling_policy_cooldown_toosoon(self):
t = self.load_template()
stack = self.parse_stack(t)
# Create initial group
self._stub_lb_reload(['WebServerGroup-0'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = resource
self.assertEqual('WebServerGroup-0', resource.resource_id)
# Scale up one
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
# Now move time on 10 seconds - Cooldown in template is 60
# so this should not update the policy metadata, and the
# scaling group instances should be unchanged
# Note we have to stub Metadata.__get__ since up_policy isn't
# stored in the DB (because the stack hasn't really been created)
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=10)
self.m.StubOutWithMock(timeutils, 'utcnow')
timeutils.utcnow().AndReturn(now)
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy,
mox.IgnoreArg()).AndReturn(previous_meta)
self.m.ReplayAll()
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
resource.resource_id)
resource.delete()
self.m.VerifyAll()
def test_scaling_policy_cooldown_zero(self):
t = template_format.parse(as_template)
stack = parse_stack(t)
# Create initial group
self._stub_lb_reload(1)
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = rsrc
self.assertEqual('WebServerGroup-0', rsrc.resource_id)
# Create the scaling policy (with Cooldown=0) and scale up one
properties = t['Resources']['WebServerScaleUpPolicy']['Properties']
properties['Cooldown'] = '0'
self._stub_lb_reload(2)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
rsrc.resource_id)
# Now trigger another scale-up without changing time, should work
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()
).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()
).AndReturn(previous_meta)
self._stub_lb_reload(3, unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
rsrc.resource_id)
rsrc.delete()
self.m.VerifyAll()
def test_scaling_group_cooldown_zero(self):
t = template_format.parse(as_template)
stack = parse_stack(t)
# Create initial group, 2 instances, Cooldown 0
properties = t['Resources']['WebServerGroup']['Properties']
properties['DesiredCapacity'] = '2'
properties['Cooldown'] = '0'
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 2')
self._stub_create(2)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = rsrc
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
rsrc.resource_id)
# reduce by 50%
self._stub_lb_reload(['WebServerGroup-0'])
self._stub_meta_expected(now, 'PercentChangeInCapacity : -50')
self.m.ReplayAll()
rsrc.adjust(-50, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0',
rsrc.resource_id)
# Don't move time, since cooldown is zero, it should work
previous_meta = {timeutils.strtime(now):
'PercentChangeInCapacity : -50'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()
).AndReturn(previous_meta)
# raise by 200%, should work
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1',
'WebServerGroup-2'], unset=False)
self._stub_meta_expected(now, 'PercentChangeInCapacity : 200')
self._stub_create(2)
self.m.ReplayAll()
rsrc.adjust(200, 'PercentChangeInCapacity')
self.assertEqual('WebServerGroup-0,WebServerGroup-1,WebServerGroup-2',
rsrc.resource_id)
rsrc.delete()
self.m.VerifyAll()
def test_scaling_group_cooldown_toosoon(self):
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=self.params)
# Create initial group, 2 instances, Cooldown 60s
properties = t["Resources"]["WebServerGroup"]["Properties"]
properties["DesiredCapacity"] = "2"
properties["Cooldown"] = "60"
self._stub_lb_reload(2)
now = timeutils.utcnow()
self._stub_meta_expected(now, "ExactCapacity : 2")
self._stub_create(2)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, "WebServerGroup")
stack.resources["WebServerGroup"] = rsrc
self.assertEqual(["WebServerGroup-0", "WebServerGroup-1"], rsrc.get_instance_names())
# reduce by 50%
self._stub_lb_reload(1)
self._stub_validate()
self._stub_meta_expected(now, "PercentChangeInCapacity : -50")
self.m.ReplayAll()
rsrc.adjust(-50, "PercentChangeInCapacity")
self.assertEqual(["WebServerGroup-0"], rsrc.get_instance_names())
# Now move time on 10 seconds - Cooldown in template is 60
# so this should not update the policy metadata, and the
# scaling group instances should be unchanged
# Note we have to stub Metadata.__get__ since up_policy isn't
# stored in the DB (because the stack hasn't really been created)
previous_meta = {timeutils.strtime(now): "PercentChangeInCapacity : -50"}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=10)
self.m.StubOutWithMock(timeutils, "utcnow")
timeutils.utcnow().MultipleTimes().AndReturn(now)
self.m.StubOutWithMock(Metadata, "__get__")
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()).AndReturn(previous_meta)
self.m.ReplayAll()
# raise by 200%, too soon for Cooldown so there should be no change
rsrc.adjust(200, "PercentChangeInCapacity")
self.assertEqual(["WebServerGroup-0"], rsrc.get_instance_names())
rsrc.delete()
def test_scaling_policy_cooldown_none(self):
t = template_format.parse(as_template)
stack = parse_stack(t)
# Create initial group
self._stub_lb_reload(["WebServerGroup-0"])
now = timeutils.utcnow()
self._stub_meta_expected(now, "ExactCapacity : 1")
self._stub_create(1)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, "WebServerGroup")
stack.resources["WebServerGroup"] = resource
self.assertEqual("WebServerGroup-0", resource.resource_id)
# Create the scaling policy no Cooldown property, should behave the
# same as when Cooldown==0
properties = t["Resources"]["WebServerScaleUpPolicy"]["Properties"]
del (properties["Cooldown"])
self._stub_lb_reload(["WebServerGroup-0", "WebServerGroup-1"])
now = timeutils.utcnow()
self._stub_meta_expected(now, "ChangeInCapacity : 1", 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack, "WebServerScaleUpPolicy")
up_policy.alarm()
self.assertEqual("WebServerGroup-0,WebServerGroup-1", resource.resource_id)
# Now trigger another scale-up without changing time, should work
previous_meta = {timeutils.strtime(now): "ChangeInCapacity : 1"}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, "__get__")
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), resource, mox.IgnoreArg()).AndReturn(previous_meta)
self._stub_lb_reload(["WebServerGroup-0", "WebServerGroup-1", "WebServerGroup-2"], unset=False)
self._stub_meta_expected(now, "ChangeInCapacity : 1", 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.alarm()
self.assertEqual("WebServerGroup-0,WebServerGroup-1,WebServerGroup-2", resource.resource_id)
resource.delete()
self.m.VerifyAll()
def test_scaling_policy_cooldown_toosoon(self):
t = template_format.parse(as_template)
stack = parse_stack(t)
# Create initial group
self._stub_lb_reload(["WebServerGroup-0"])
now = timeutils.utcnow()
self._stub_meta_expected(now, "ExactCapacity : 1")
self._stub_create(1)
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, "WebServerGroup")
stack.resources["WebServerGroup"] = resource
self.assertEqual("WebServerGroup-0", resource.resource_id)
# Scale up one
self._stub_lb_reload(["WebServerGroup-0", "WebServerGroup-1"])
self._stub_meta_expected(now, "ChangeInCapacity : 1", 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack, "WebServerScaleUpPolicy")
up_policy.alarm()
self.assertEqual("WebServerGroup-0,WebServerGroup-1", resource.resource_id)
# Now move time on 10 seconds - Cooldown in template is 60
# so this should not update the policy metadata, and the
# scaling group instances should be unchanged
# Note we have to stub Metadata.__get__ since up_policy isn't
# stored in the DB (because the stack hasn't really been created)
previous_meta = {timeutils.strtime(now): "ChangeInCapacity : 1"}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=10)
self.m.StubOutWithMock(timeutils, "utcnow")
timeutils.utcnow().AndReturn(now)
self.m.StubOutWithMock(Metadata, "__get__")
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()).AndReturn(previous_meta)
self.m.ReplayAll()
up_policy.alarm()
self.assertEqual("WebServerGroup-0,WebServerGroup-1", resource.resource_id)
resource.delete()
self.m.VerifyAll()
def test_scaling_group_cooldown_ok(self):
t = template_format.parse(as_template)
stack = parse_stack(t)
# Create initial group, 2 instances, Cooldown 60s
properties = t["Resources"]["WebServerGroup"]["Properties"]
properties["DesiredCapacity"] = "2"
properties["Cooldown"] = "60"
self._stub_lb_reload(["WebServerGroup-0", "WebServerGroup-1"])
self._stub_create(2)
now = timeutils.utcnow()
self._stub_meta_expected(now, "ExactCapacity : 2")
self.m.ReplayAll()
resource = self.create_scaling_group(t, stack, "WebServerGroup")
stack.resources["WebServerGroup"] = resource
self.assertEqual("WebServerGroup-0,WebServerGroup-1", resource.resource_id)
# reduce by 50%
self._stub_lb_reload(["WebServerGroup-0"])
self._stub_meta_expected(now, "PercentChangeInCapacity : -50")
self.m.ReplayAll()
resource.adjust(-50, "PercentChangeInCapacity")
self.assertEqual("WebServerGroup-0", resource.resource_id)
# Now move time on 61 seconds - Cooldown in template is 60
# so this should update the policy metadata, and the
# scaling group instances updated
previous_meta = {timeutils.strtime(now): "PercentChangeInCapacity : -50"}
self.m.VerifyAll()
self.m.UnsetStubs()
now = now + datetime.timedelta(seconds=61)
self.m.StubOutWithMock(Metadata, "__get__")
Metadata.__get__(mox.IgnoreArg(), resource, mox.IgnoreArg()).AndReturn(previous_meta)
# raise by 200%, should work
self._stub_lb_reload(["WebServerGroup-0", "WebServerGroup-1", "WebServerGroup-2"], unset=False)
self._stub_create(2)
self._stub_meta_expected(now, "PercentChangeInCapacity : 200")
self.m.ReplayAll()
resource.adjust(200, "PercentChangeInCapacity")
self.assertEqual("WebServerGroup-0,WebServerGroup-1,WebServerGroup-2", resource.resource_id)
resource.delete()
def test_scaling_policy_cooldown_none(self):
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=self.params)
# Create initial group
self._stub_lb_reload(1)
now = timeutils.utcnow()
self._stub_meta_expected(now, "ExactCapacity : 1")
self._stub_create(1)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, "WebServerGroup")
stack.resources["WebServerGroup"] = rsrc
self.assertEqual(["WebServerGroup-0"], rsrc.get_instance_names())
# Create the scaling policy no Cooldown property, should behave the
# same as when Cooldown==0
properties = t["Resources"]["WebServerScaleUpPolicy"]["Properties"]
del (properties["Cooldown"])
self._stub_lb_reload(2)
now = timeutils.utcnow()
self._stub_meta_expected(now, "ChangeInCapacity : 1", 2)
self._stub_create(1)
self.m.StubOutWithMock(asc.ScalingPolicy, "keystone")
asc.ScalingPolicy.keystone().MultipleTimes().AndReturn(self.fc)
self.m.ReplayAll()
up_policy = self.create_scaling_policy(t, stack, "WebServerScaleUpPolicy")
up_policy.signal()
self.assertEqual(["WebServerGroup-0", "WebServerGroup-1"], rsrc.get_instance_names())
# Now trigger another scale-up without changing time, should work
previous_meta = {timeutils.strtime(now): "ChangeInCapacity : 1"}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, "__get__")
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()).AndReturn(previous_meta)
# stub for the metadata accesses while creating the addtional instance
Metadata.__get__(mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg())
self._stub_lb_reload(3, unset=False)
self._stub_meta_expected(now, "ChangeInCapacity : 1", 2)
self._stub_create(1)
self.m.ReplayAll()
up_policy.signal()
self.assertEqual(["WebServerGroup-0", "WebServerGroup-1", "WebServerGroup-2"], rsrc.get_instance_names())
rsrc.delete()
self.m.VerifyAll()
def test_scaling_group_cooldown_zero(self):
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=self.params)
# Create initial group, 2 instances, Cooldown 0
properties = t["Resources"]["WebServerGroup"]["Properties"]
properties["DesiredCapacity"] = "2"
properties["Cooldown"] = "0"
self._stub_lb_reload(2)
now = timeutils.utcnow()
self._stub_meta_expected(now, "ExactCapacity : 2")
self._stub_create(2)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, "WebServerGroup")
stack.resources["WebServerGroup"] = rsrc
self.assertEqual(["WebServerGroup-0", "WebServerGroup-1"], rsrc.get_instance_names())
# reduce by 50%
self._stub_lb_reload(1)
self._stub_meta_expected(now, "PercentChangeInCapacity : -50")
self._stub_validate()
self.m.ReplayAll()
rsrc.adjust(-50, "PercentChangeInCapacity")
self.assertEqual(["WebServerGroup-0"], rsrc.get_instance_names())
# Don't move time, since cooldown is zero, it should work
previous_meta = {timeutils.strtime(now): "PercentChangeInCapacity : -50"}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, "__get__")
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()).AndReturn(previous_meta)
# stub for the metadata accesses while creating the two instances
Metadata.__get__(mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg())
Metadata.__get__(mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg())
# raise by 200%, should work
self._stub_lb_reload(3, unset=False)
self._stub_meta_expected(now, "PercentChangeInCapacity : 200")
self._stub_create(2)
self.m.ReplayAll()
rsrc.adjust(200, "PercentChangeInCapacity")
self.assertEqual(["WebServerGroup-0", "WebServerGroup-1", "WebServerGroup-2"], rsrc.get_instance_names())
rsrc.delete()
self.m.VerifyAll()
def test_scaling_policy_update(self):
t = template_format.parse(as_template)
stack = parse_stack(t)
# Create initial group
self._stub_lb_reload(['WebServerGroup-0'])
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = rsrc
self.assertEqual('WebServerGroup-0', rsrc.resource_id)
# Create initial scaling policy
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
# Scale up one
self._stub_lb_reload(['WebServerGroup-0', 'WebServerGroup-1'])
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
# Trigger alarm
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1', rsrc.resource_id)
# Update scaling policy
update_snippet = copy.deepcopy(up_policy.parsed_template())
update_snippet['Properties']['ScalingAdjustment'] = '2'
self.assertEqual(None, up_policy.update(update_snippet))
self.assertEqual('2', up_policy.properties['ScalingAdjustment'])
# Now move time on 61 seconds - Cooldown in template is 60
# so this should trigger a scale-up
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy,
mox.IgnoreArg()).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), rsrc,
mox.IgnoreArg()).AndReturn(previous_meta)
now = now + datetime.timedelta(seconds=61)
self._stub_lb_reload([
'WebServerGroup-0', 'WebServerGroup-1', 'WebServerGroup-2',
'WebServerGroup-3'
],
unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 2', 2)
self._stub_create(2)
self.m.ReplayAll()
# Trigger alarm
up_policy.alarm()
self.assertEqual(
'WebServerGroup-0,WebServerGroup-1,'
'WebServerGroup-2,WebServerGroup-3', rsrc.resource_id)
rsrc.delete()
self.m.VerifyAll()
def test_loadbalancer(self):
self.m.StubOutWithMock(user.User, 'keystone')
user.User.keystone().MultipleTimes().AndReturn(self.fkc)
self.m.StubOutWithMock(user.AccessKey, 'keystone')
user.AccessKey.keystone().MultipleTimes().AndReturn(self.fkc)
lb.LoadBalancer.nova().AndReturn(self.fc)
instance.Instance.nova().MultipleTimes().AndReturn(self.fc)
self.fc.servers.create(
flavor=2, image=745, key_name='test',
meta=None, nics=None, name=u'test_stack.LoadBalancer.LB_instance',
scheduler_hints=None, userdata=mox.IgnoreArg(),
security_groups=None, availability_zone=None).AndReturn(
self.fc.servers.list()[1])
#stack.Stack.create_with_template(mox.IgnoreArg()).AndReturn(None)
Metadata.__set__(mox.IgnoreArg(),
mox.IgnoreArg()).MultipleTimes().AndReturn(None)
lb.LoadBalancer.nova().MultipleTimes().AndReturn(self.fc)
self.m.ReplayAll()
t = self.load_template()
s = self.parse_stack(t)
resource = self.create_loadbalancer(t, s, 'LoadBalancer')
hc = {
'Target': 'HTTP:80/',
'HealthyThreshold': '3',
'UnhealthyThreshold': '5',
'Interval': '30',
'Timeout': '5'}
resource.t['Properties']['HealthCheck'] = hc
self.assertEqual(None, resource.validate())
hc['Timeout'] = 35
self.assertEqual(
{'Error': 'Interval must be larger than Timeout'},
resource.validate())
hc['Timeout'] = 5
self.assertEqual('LoadBalancer', resource.FnGetRefId())
templ = template_format.parse(lb.lb_template)
ha_cfg = resource._haproxy_config(templ,
resource.properties['Instances'])
self.assertRegexpMatches(ha_cfg, 'bind \*:80')
self.assertRegexpMatches(ha_cfg, 'server server1 1\.2\.3\.4:80 '
'check inter 30s fall 5 rise 3')
self.assertRegexpMatches(ha_cfg, 'timeout check 5s')
id_list = []
for inst_name in ['WikiServerOne1', 'WikiServerOne2']:
inst = instance.Instance(inst_name,
s.t['Resources']['WikiServerOne'],
s)
id_list.append(inst.FnGetRefId())
resource.nested().create()
resource.reload(id_list)
self.assertEqual('4.5.6.7', resource.FnGetAtt('DNSName'))
self.assertEqual('', resource.FnGetAtt('SourceSecurityGroupName'))
try:
resource.FnGetAtt('Foo')
raise Exception('Expected InvalidTemplateAttribute')
except exception.InvalidTemplateAttribute:
pass
self.assertEqual(lb.LoadBalancer.UPDATE_REPLACE,
resource.handle_update({}))
self.m.VerifyAll()
def test_scaling_policy_update(self):
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=self.params)
# Create initial group
self._stub_lb_reload(1)
now = timeutils.utcnow()
self._stub_meta_expected(now, "ExactCapacity : 1")
self._stub_create(1)
self.m.StubOutWithMock(asc.ScalingPolicy, "keystone")
asc.ScalingPolicy.keystone().MultipleTimes().AndReturn(self.fc)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, "WebServerGroup")
stack.resources["WebServerGroup"] = rsrc
self.assertEqual(["WebServerGroup-0"], rsrc.get_instance_names())
# Create initial scaling policy
up_policy = self.create_scaling_policy(t, stack, "WebServerScaleUpPolicy")
# Scale up one
self._stub_lb_reload(2)
self._stub_meta_expected(now, "ChangeInCapacity : 1", 2)
self._stub_create(1)
self.m.ReplayAll()
# Trigger alarm
up_policy.signal()
self.assertEqual(["WebServerGroup-0", "WebServerGroup-1"], rsrc.get_instance_names())
# Update scaling policy
update_snippet = copy.deepcopy(up_policy.parsed_template())
update_snippet["Properties"]["ScalingAdjustment"] = "2"
self.assertEqual(None, up_policy.update(update_snippet))
self.assertEqual("2", up_policy.properties["ScalingAdjustment"])
# Now move time on 61 seconds - Cooldown in template is 60
# so this should trigger a scale-up
previous_meta = {timeutils.strtime(now): "ChangeInCapacity : 1"}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, "__get__")
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()).AndReturn(previous_meta)
# stub for the metadata accesses while creating the two instances
Metadata.__get__(mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg())
Metadata.__get__(mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg())
now = now + datetime.timedelta(seconds=61)
self._stub_lb_reload(4, unset=False)
self._stub_meta_expected(now, "ChangeInCapacity : 2", 2)
self._stub_create(2)
self.m.ReplayAll()
# Trigger alarm
up_policy.signal()
self.assertEqual(
["WebServerGroup-0", "WebServerGroup-1", "WebServerGroup-2", "WebServerGroup-3"], rsrc.get_instance_names()
)
rsrc.delete()
self.m.VerifyAll()
def test_loadbalancer(self):
self.m.StubOutWithMock(user.User, 'keystone')
user.User.keystone().MultipleTimes().AndReturn(self.fkc)
self.m.StubOutWithMock(user.AccessKey, 'keystone')
user.AccessKey.keystone().MultipleTimes().AndReturn(self.fkc)
self.m.StubOutWithMock(wc.WaitConditionHandle, 'keystone')
wc.WaitConditionHandle.keystone().MultipleTimes().AndReturn(self.fkc)
lb.LoadBalancer.nova().AndReturn(self.fc)
instance.Instance.nova().MultipleTimes().AndReturn(self.fc)
self.fc.servers.create(flavor=2,
image=745,
key_name='test',
meta=None,
nics=None,
name=u'test_stack.LoadBalancer.LB_instance',
scheduler_hints=None,
userdata=mox.IgnoreArg(),
security_groups=None,
availability_zone=None).AndReturn(
self.fc.servers.list()[1])
Metadata.__set__(mox.IgnoreArg(),
mox.IgnoreArg()).MultipleTimes().AndReturn(None)
lb.LoadBalancer.nova().MultipleTimes().AndReturn(self.fc)
self.m.StubOutWithMock(wc.WaitConditionHandle, 'get_status')
wc.WaitConditionHandle.get_status().AndReturn(['SUCCESS'])
self.m.ReplayAll()
t = self.load_template()
s = self.parse_stack(t)
resource = self.create_loadbalancer(t, s, 'LoadBalancer')
hc = {
'Target': 'HTTP:80/',
'HealthyThreshold': '3',
'UnhealthyThreshold': '5',
'Interval': '30',
'Timeout': '5'
}
resource.t['Properties']['HealthCheck'] = hc
self.assertEqual(None, resource.validate())
hc['Timeout'] = 35
self.assertEqual({'Error': 'Interval must be larger than Timeout'},
resource.validate())
hc['Timeout'] = 5
self.assertEqual('LoadBalancer', resource.FnGetRefId())
templ = template_format.parse(lb.lb_template)
ha_cfg = resource._haproxy_config(templ,
resource.properties['Instances'])
self.assertRegexpMatches(ha_cfg, 'bind \*:80')
self.assertRegexpMatches(
ha_cfg, 'server server1 1\.2\.3\.4:80 '
'check inter 30s fall 5 rise 3')
self.assertRegexpMatches(ha_cfg, 'timeout check 5s')
id_list = []
for inst_name in ['WikiServerOne1', 'WikiServerOne2']:
inst = instance.Instance(inst_name,
s.t['Resources']['WikiServerOne'], s)
id_list.append(inst.FnGetRefId())
resource.nested().create()
resource.reload(id_list)
self.assertEqual('4.5.6.7', resource.FnGetAtt('DNSName'))
self.assertEqual('', resource.FnGetAtt('SourceSecurityGroupName'))
try:
resource.FnGetAtt('Foo')
raise Exception('Expected InvalidTemplateAttribute')
except exception.InvalidTemplateAttribute:
pass
self.assertEqual(lb.LoadBalancer.UPDATE_REPLACE,
resource.handle_update({}))
self.m.VerifyAll()
def test_loadbalancer(self):
self.m.StubOutWithMock(scheduler.TaskRunner, '_sleep')
scheduler.TaskRunner._sleep(mox.IsA(int)).MultipleTimes()
self.m.StubOutWithMock(user.User, 'keystone')
user.User.keystone().AndReturn(self.fkc)
self.m.StubOutWithMock(user.AccessKey, 'keystone')
user.AccessKey.keystone().AndReturn(self.fkc)
self.m.StubOutWithMock(wc.WaitConditionHandle, 'keystone')
wc.WaitConditionHandle.keystone().MultipleTimes().AndReturn(self.fkc)
clients.OpenStackClients.nova(
"compute").MultipleTimes().AndReturn(self.fc)
self.fc.servers.create(
flavor=2, image=745, key_name='test',
meta=None, nics=None, name=u'test_stack.LoadBalancer.LB_instance',
scheduler_hints=None, userdata=mox.IgnoreArg(),
security_groups=None, availability_zone=None).AndReturn(
self.fc.servers.list()[1])
Metadata.__set__(mox.IgnoreArg(),
mox.IgnoreArg()).AndReturn(None)
self.m.StubOutWithMock(wc.WaitConditionHandle, 'get_status')
wc.WaitConditionHandle.get_status().AndReturn(['SUCCESS'])
self.m.ReplayAll()
t = template_format.parse(lb_template)
s = parse_stack(t)
s.store()
rsrc = self.create_loadbalancer(t, s, 'LoadBalancer')
hc = {
'Target': 'HTTP:80/',
'HealthyThreshold': '3',
'UnhealthyThreshold': '5',
'Interval': '30',
'Timeout': '5'}
rsrc.t['Properties']['HealthCheck'] = hc
self.assertEqual(None, rsrc.validate())
hc['Timeout'] = 35
self.assertEqual(
{'Error': 'Interval must be larger than Timeout'},
rsrc.validate())
hc['Timeout'] = 5
self.assertEqual('LoadBalancer', rsrc.FnGetRefId())
templ = template_format.parse(lb.lb_template)
ha_cfg = rsrc._haproxy_config(templ, rsrc.properties['Instances'])
self.assertRegexpMatches(ha_cfg, 'bind \*:80')
self.assertRegexpMatches(ha_cfg, 'server server1 1\.2\.3\.4:80 '
'check inter 30s fall 5 rise 3')
self.assertRegexpMatches(ha_cfg, 'timeout check 5s')
id_list = []
for inst_name in ['WikiServerOne1', 'WikiServerOne2']:
inst = instance.Instance(inst_name,
s.t['Resources']['WikiServerOne'],
s)
id_list.append(inst.FnGetRefId())
rsrc.reload(id_list)
self.assertEqual('4.5.6.7', rsrc.FnGetAtt('DNSName'))
self.assertEqual('', rsrc.FnGetAtt('SourceSecurityGroupName'))
try:
rsrc.FnGetAtt('Foo')
raise Exception('Expected InvalidTemplateAttribute')
except exception.InvalidTemplateAttribute:
pass
self.assertRaises(resource.UpdateReplace,
rsrc.handle_update, {}, {}, {})
self.m.VerifyAll()
def test_scaling_policy_update(self):
t = template_format.parse(as_template)
stack = parse_stack(t)
# Create initial group
self._stub_lb_reload(1)
now = timeutils.utcnow()
self._stub_meta_expected(now, 'ExactCapacity : 1')
self._stub_create(1)
self.m.ReplayAll()
rsrc = self.create_scaling_group(t, stack, 'WebServerGroup')
stack.resources['WebServerGroup'] = rsrc
self.assertEqual('WebServerGroup-0', rsrc.resource_id)
# Create initial scaling policy
up_policy = self.create_scaling_policy(t, stack,
'WebServerScaleUpPolicy')
# Scale up one
self._stub_lb_reload(2)
self._stub_meta_expected(now, 'ChangeInCapacity : 1', 2)
self._stub_create(1)
self.m.ReplayAll()
# Trigger alarm
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1',
rsrc.resource_id)
# Update scaling policy
update_snippet = copy.deepcopy(up_policy.parsed_template())
update_snippet['Properties']['ScalingAdjustment'] = '2'
self.assertEqual(None, up_policy.update(update_snippet))
self.assertEqual('2',
up_policy.properties['ScalingAdjustment'])
# Now move time on 61 seconds - Cooldown in template is 60
# so this should trigger a scale-up
previous_meta = {timeutils.strtime(now): 'ChangeInCapacity : 1'}
self.m.VerifyAll()
self.m.UnsetStubs()
self.m.StubOutWithMock(Metadata, '__get__')
Metadata.__get__(mox.IgnoreArg(), up_policy, mox.IgnoreArg()
).AndReturn(previous_meta)
Metadata.__get__(mox.IgnoreArg(), rsrc, mox.IgnoreArg()
).AndReturn(previous_meta)
now = now + datetime.timedelta(seconds=61)
self._stub_lb_reload(4, unset=False)
self._stub_meta_expected(now, 'ChangeInCapacity : 2', 2)
self._stub_create(2)
self.m.ReplayAll()
# Trigger alarm
up_policy.alarm()
self.assertEqual('WebServerGroup-0,WebServerGroup-1,'
'WebServerGroup-2,WebServerGroup-3',
rsrc.resource_id)
rsrc.delete()
self.m.VerifyAll()