OpenStack Orchestration (Heat)
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#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import copy
import mock
import six
from heat.common import exception
from heat.common import grouputils
from heat.common import template_format
from heat.engine import resource
from heat.engine.resources.openstack.heat import instance_group as instgrp
from heat.engine import rsrc_defn
from heat.engine import scheduler
from heat.engine import stack as parser
from heat.tests.autoscaling import inline_templates
from heat.tests import common
from heat.tests import utils
class TestInstanceGroup(common.HeatTestCase):
def setUp(self):
super(TestInstanceGroup, self).setUp()
t = template_format.parse(inline_templates.as_template)
self.stack = utils.parse_stack(t, params=inline_templates.as_params)
self.defn = rsrc_defn.ResourceDefinition(
'asg', 'OS::Heat::InstanceGroup',
{'Size': 2, 'AvailabilityZones': ['zoneb'],
'LaunchConfigurationName': 'config'})
self.instance_group = instgrp.InstanceGroup('asg',
self.defn, self.stack)
def test_child_template(self):
self.instance_group._create_template = mock.Mock(return_value='tpl')
self.assertEqual('tpl', self.instance_group.child_template())
self.instance_group._create_template.assert_called_once_with(2)
def test_child_params(self):
expected = {'parameters': {},
'resource_registry': {
'OS::Heat::ScaledResource': 'AWS::EC2::Instance'}}
self.assertEqual(expected, self.instance_group.child_params())
def test_tags_default(self):
expected = [{'Value': u'asg',
'Key': 'metering.groupname'}]
self.assertEqual(expected, self.instance_group._tags())
def test_tags_with_extra(self):
self.instance_group.properties.data['Tags'] = [
{'Key': 'fee', 'Value': 'foo'}]
expected = [{'Key': 'fee', 'Value': 'foo'},
{'Value': u'asg',
'Key': 'metering.groupname'}]
self.assertEqual(expected, self.instance_group._tags())
def test_tags_with_metering(self):
self.instance_group.properties.data['Tags'] = [
{'Key': 'metering.fee', 'Value': 'foo'}]
expected = [{'Key': 'metering.fee', 'Value': 'foo'}]
self.assertEqual(expected, self.instance_group._tags())
def test_validate_launch_conf(self):
props = self.instance_group.properties.data
props['LaunchConfigurationName'] = 'urg_i_cant_spell'
creator = scheduler.TaskRunner(self.instance_group.create)
error = self.assertRaises(exception.ResourceFailure, creator)
self.assertIn('(urg_i_cant_spell) reference can not be found.',
six.text_type(error))
def test_validate_launch_conf_no_ref(self):
props = self.instance_group.properties.data
props['LaunchConfigurationName'] = 'JobServerConfig'
creator = scheduler.TaskRunner(self.instance_group.create)
error = self.assertRaises(exception.ResourceFailure, creator)
self.assertIn('(JobServerConfig) reference can not be',
six.text_type(error))
def test_handle_create(self):
self.instance_group.create_with_template = mock.Mock(return_value=None)
self.instance_group.validate_launchconfig = mock.Mock(
return_value=None)
self.instance_group._create_template = mock.Mock(return_value='{}')
self.instance_group.handle_create()
self.instance_group.validate_launchconfig.assert_called_once_with()
self.instance_group._create_template.assert_called_once_with(2)
self.instance_group.create_with_template.assert_called_once_with('{}')
def test_update_in_failed(self):
self.instance_group.state_set('CREATE', 'FAILED')
# to update the failed instance_group
self.instance_group.resize = mock.Mock(return_value=None)
self.instance_group.handle_update(self.defn, None, None)
self.instance_group.resize.assert_called_once_with(2)
def test_handle_delete(self):
self.instance_group.delete_nested = mock.Mock(return_value=None)
self.instance_group.handle_delete()
self.instance_group.delete_nested.assert_called_once_with()
def test_handle_update_size(self):
self.instance_group._try_rolling_update = mock.Mock(return_value=None)
self.instance_group.resize = mock.Mock(return_value=None)
props = {'Size': 5}
defn = rsrc_defn.ResourceDefinition(
'nopayload',
'AWS::AutoScaling::AutoScalingGroup',
props)
self.instance_group.handle_update(defn, None, props)
self.instance_group.resize.assert_called_once_with(5)
def test_attributes(self):
mock_members = self.patchobject(grouputils, 'get_members')
instances = []
for ip_ex in six.moves.range(1, 4):
inst = mock.Mock()
inst.FnGetAtt.return_value = '2.1.3.%d' % ip_ex
instances.append(inst)
mock_members.return_value = instances
res = self.instance_group._resolve_attribute('InstanceList')
self.assertEqual('2.1.3.1,2.1.3.2,2.1.3.3', res)
class TestLaunchConfig(common.HeatTestCase):
def create_resource(self, t, stack, resource_name):
# subsequent resources may need to reference previous created resources
# use the stack's resource objects instead of instantiating new ones
rsrc = stack[resource_name]
self.assertIsNone(rsrc.validate())
scheduler.TaskRunner(rsrc.create)()
self.assertEqual((rsrc.CREATE, rsrc.COMPLETE), rsrc.state)
return rsrc
def test_update_metadata_replace(self):
"""Updating the config's metadata causes a config replacement."""
lc_template = '''
{
"AWSTemplateFormatVersion" : "2010-09-09",
"Resources": {
"JobServerConfig" : {
"Type" : "AWS::AutoScaling::LaunchConfiguration",
"Metadata": {"foo": "bar"},
"Properties": {
"ImageId" : "foo",
"InstanceType" : "m1.large",
"KeyName" : "test",
}
}
}
}
'''
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.stub_KeypairConstraint_validate()
t = template_format.parse(lc_template)
stack = utils.parse_stack(t)
rsrc = self.create_resource(t, stack, 'JobServerConfig')
props = copy.copy(rsrc.properties.data)
metadata = copy.copy(rsrc.metadata_get())
update_snippet = rsrc_defn.ResourceDefinition(rsrc.name,
rsrc.type(),
props,
metadata)
# Change nothing in the first update
scheduler.TaskRunner(rsrc.update, update_snippet)()
self.assertEqual('bar', metadata['foo'])
metadata['foo'] = 'wibble'
update_snippet = rsrc_defn.ResourceDefinition(rsrc.name,
rsrc.type(),
props,
metadata)
# Changing metadata in the second update triggers UpdateReplace
updater = scheduler.TaskRunner(rsrc.update, update_snippet)
self.assertRaises(resource.UpdateReplace, updater)
class LoadbalancerReloadTest(common.HeatTestCase):
def test_Instances(self):
t = template_format.parse(inline_templates.as_template)
stack = utils.parse_stack(t)
lb = stack['ElasticLoadBalancer']
lb.update = mock.Mock(return_value=None)
defn = rsrc_defn.ResourceDefinition(
'asg', 'OS::Heat::InstanceGroup',
{'Size': 2,
'AvailabilityZones': ['zoneb'],
"LaunchConfigurationName": "LaunchConfig",
"LoadBalancerNames": ["ElasticLoadBalancer"]})
group = instgrp.InstanceGroup('asg', defn, stack)
mock_members = self.patchobject(grouputils, 'get_member_refids')
mock_members.return_value = ['aaaa', 'bbb']
expected = rsrc_defn.ResourceDefinition(
'ElasticLoadBalancer',
'AWS::ElasticLoadBalancing::LoadBalancer',
{'Instances': ['aaaa', 'bbb'],
'Listeners': [{'InstancePort': u'80',
'LoadBalancerPort': u'80',
'Protocol': 'HTTP'}],
'AvailabilityZones': ['nova']},
metadata={},
deletion_policy='Delete'
)
group._lb_reload()
mock_members.assert_called_once_with(group, exclude=[])
lb.update.assert_called_once_with(expected)
def test_members(self):
t = template_format.parse(inline_templates.as_template)
t['Resources']['ElasticLoadBalancer'] = {
'Type': 'OS::Neutron::LoadBalancer',
'Properties': {
'protocol_port': 8080,
}
}
stack = utils.parse_stack(t)
lb = stack['ElasticLoadBalancer']
lb.update = mock.Mock(return_value=None)
defn = rsrc_defn.ResourceDefinition(
'asg', 'OS::Heat::InstanceGroup',
{'Size': 2,
'AvailabilityZones': ['zoneb'],
"LaunchConfigurationName": "LaunchConfig",
"LoadBalancerNames": ["ElasticLoadBalancer"]})
group = instgrp.InstanceGroup('asg', defn, stack)
mock_members = self.patchobject(grouputils, 'get_member_refids')
mock_members.return_value = ['aaaa', 'bbb']
expected = rsrc_defn.ResourceDefinition(
'ElasticLoadBalancer',
'OS::Neutron::LoadBalancer',
{'protocol_port': 8080,
'members': ['aaaa', 'bbb']},
metadata={},
deletion_policy='Delete')
group._lb_reload()
mock_members.assert_called_once_with(group, exclude=[])
lb.update.assert_called_once_with(expected)
def test_lb_reload_invalid_resource(self):
t = template_format.parse(inline_templates.as_template)
t['Resources']['ElasticLoadBalancer'] = {
'Type': 'AWS::EC2::Volume',
'Properties': {
'AvailabilityZone': 'nova'
}
}
stack = utils.parse_stack(t)
lb = stack['ElasticLoadBalancer']
lb.update = mock.Mock(return_value=None)
defn = rsrc_defn.ResourceDefinition(
'asg', 'OS::Heat::InstanceGroup',
{'Size': 2,
'AvailabilityZones': ['zoneb'],
"LaunchConfigurationName": "LaunchConfig",
"LoadBalancerNames": ["ElasticLoadBalancer"]})
group = instgrp.InstanceGroup('asg', defn, stack)
mock_members = self.patchobject(grouputils, 'get_member_refids')
mock_members.return_value = ['aaaa', 'bbb']
error = self.assertRaises(exception.Error,
group._lb_reload)
self.assertEqual(
"Unsupported resource 'ElasticLoadBalancer' in "
"LoadBalancerNames",
six.text_type(error))
def test_lb_reload_static_resolve(self):
t = template_format.parse(inline_templates.as_template)
properties = t['Resources']['ElasticLoadBalancer']['Properties']
properties['AvailabilityZones'] = {'Fn::GetAZs': ''}
self.patchobject(parser.Stack, 'get_availability_zones',
return_value=['abc', 'xyz'])
mock_members = self.patchobject(grouputils, 'get_member_refids')
mock_members.return_value = ['aaaabbbbcccc']
# Check that the Fn::GetAZs is correctly resolved
expected = {u'Properties': {'Instances': ['aaaabbbbcccc'],
u'Listeners': [{u'InstancePort': u'80',
u'LoadBalancerPort': u'80',
u'Protocol': u'HTTP'}],
u'AvailabilityZones': ['abc', 'xyz']},
u'DeletionPolicy': 'Delete',
u'Metadata': {}}
stack = utils.parse_stack(t, params=inline_templates.as_params)
lb = stack['ElasticLoadBalancer']
lb.state_set(lb.CREATE, lb.COMPLETE)
lb.handle_update = mock.Mock(return_value=None)
group = stack['WebServerGroup']
group._lb_reload()
lb.handle_update.assert_called_once_with(
mock.ANY, expected,
{'Instances': ['aaaabbbbcccc']})
class ReplaceTest(common.HeatTestCase):
scenarios = [
('1', dict(min_in_service=0, batch_size=1, updates=2)),
('2', dict(min_in_service=0, batch_size=2, updates=1)),
('3', dict(min_in_service=3, batch_size=1, updates=3)),
('4', dict(min_in_service=3, batch_size=2, updates=2))]
def setUp(self):
super(ReplaceTest, self).setUp()
t = template_format.parse(inline_templates.as_template)
self.stack = utils.parse_stack(t, params=inline_templates.as_params)
lc = self.create_launch_config(t, self.stack)
lcid = lc.FnGetRefId()
self.defn = rsrc_defn.ResourceDefinition(
'asg', 'OS::Heat::InstanceGroup',
{'Size': 2, 'AvailabilityZones': ['zoneb'],
'LaunchConfigurationName': lcid})
self.group = instgrp.InstanceGroup('asg', self.defn, self.stack)
self.group._lb_reload = mock.Mock()
self.group.update_with_template = mock.Mock()
self.group.check_update_complete = mock.Mock()
self.group._nested = self.get_fake_nested_stack()
def create_launch_config(self, t, stack):
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.stub_SnapshotConstraint_validate()
rsrc = stack['LaunchConfig']
self.assertIsNone(rsrc.validate())
scheduler.TaskRunner(rsrc.create)()
self.assertEqual((rsrc.CREATE, rsrc.COMPLETE), rsrc.state)
return rsrc
def get_fake_nested_stack(self):
nested_t = '''
heat_template_version: 2013-05-23
description: AutoScaling Test
resources:
one:
type: ResourceWithPropsAndAttrs
properties:
Foo: hello
two:
type: ResourceWithPropsAndAttrs
properties:
Foo: fee
'''
return utils.parse_stack(template_format.parse(nested_t))
def test_rolling_updates(self):
self.group._replace(self.min_in_service, self.batch_size, 0)
self.assertEqual(self.updates,
len(self.group.update_with_template.call_args_list))
self.assertEqual(self.updates + 1,
len(self.group._lb_reload.call_args_list))