320 lines
12 KiB
Python
320 lines
12 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import copy
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import mox
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from heat.common import exception
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from heat.common import template_format
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from heat.engine import parser
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from heat.engine import resource
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from heat.engine import resources
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from heat.engine.resources import image
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from heat.engine.resources import instance
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from heat.engine.resources import nova_keypair
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from heat.engine import scheduler
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from heat.tests.common import HeatTestCase
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from heat.tests import utils
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ig_template = '''
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{
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"AWSTemplateFormatVersion" : "2010-09-09",
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"Description" : "Template to create multiple instances.",
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"Parameters" : {},
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"Resources" : {
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"JobServerGroup" : {
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"Type" : "OS::Heat::InstanceGroup",
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"Properties" : {
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"LaunchConfigurationName" : { "Ref" : "JobServerConfig" },
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"Size" : "1",
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"AvailabilityZones" : ["nova"]
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}
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},
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"JobServerConfig" : {
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"Type" : "AWS::AutoScaling::LaunchConfiguration",
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"Properties": {
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"ImageId" : "foo",
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"InstanceType" : "m1.large",
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"KeyName" : "test",
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"SecurityGroups" : [ "sg-1" ],
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"UserData" : "jsconfig data"
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}
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}
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}
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}
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'''
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class InstanceGroupTest(HeatTestCase):
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def setUp(self):
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super(InstanceGroupTest, self).setUp()
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def _stub_create(self, num, instance_class=instance.Instance):
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"""
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Expect creation of C{num} number of Instances.
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:param instance_class: The resource class to expect to be created
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instead of instance.Instance.
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"""
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self.m.StubOutWithMock(parser.Stack, 'validate')
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parser.Stack.validate()
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self.m.StubOutWithMock(nova_keypair.KeypairConstraint, 'validate')
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nova_keypair.KeypairConstraint.validate(
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mox.IgnoreArg(), mox.IgnoreArg()).MultipleTimes().AndReturn(True)
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self.m.StubOutWithMock(image.ImageConstraint, 'validate')
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image.ImageConstraint.validate(
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mox.IgnoreArg(), mox.IgnoreArg()).MultipleTimes().AndReturn(True)
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self.m.StubOutWithMock(instance_class, 'handle_create')
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self.m.StubOutWithMock(instance_class, 'check_create_complete')
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cookie = object()
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for x in range(num):
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instance_class.handle_create().AndReturn(cookie)
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instance_class.check_create_complete(cookie).AndReturn(False)
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instance_class.check_create_complete(
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cookie).MultipleTimes().AndReturn(True)
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def create_resource(self, t, stack, resource_name):
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# subsequent resources may need to reference previous created resources
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# use the stack's resource objects instead of instantiating new ones
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rsrc = stack[resource_name]
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self.assertIsNone(rsrc.validate())
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scheduler.TaskRunner(rsrc.create)()
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self.assertEqual((rsrc.CREATE, rsrc.COMPLETE), rsrc.state)
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return rsrc
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def test_instance_group(self):
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t = template_format.parse(ig_template)
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stack = utils.parse_stack(t)
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# start with min then delete
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self._stub_create(1)
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self.m.StubOutWithMock(instance.Instance, 'FnGetAtt')
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instance.Instance.FnGetAtt('PublicIp').AndReturn('1.2.3.4')
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self.m.ReplayAll()
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self.create_resource(t, stack, 'JobServerConfig')
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rsrc = self.create_resource(t, stack, 'JobServerGroup')
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self.assertEqual(utils.PhysName(stack.name, rsrc.name),
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rsrc.FnGetRefId())
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self.assertEqual('1.2.3.4', rsrc.FnGetAtt('InstanceList'))
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nested = rsrc.nested()
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self.assertEqual(nested.id, rsrc.resource_id)
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rsrc.delete()
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self.m.VerifyAll()
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def test_instance_group_custom_resource(self):
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"""
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If AWS::EC2::Instance is overridden, InstanceGroup will automatically
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use that overridden resource type.
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"""
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# resources may need to be initialised if this is the first test run.
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resources.initialise()
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class MyInstance(instance.Instance):
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"""A customized Instance resource."""
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original_instance = resource.get_class("AWS::EC2::Instance")
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resource._register_class("AWS::EC2::Instance", MyInstance)
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self.addCleanup(resource._register_class, "AWS::EC2::Instance",
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original_instance)
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t = template_format.parse(ig_template)
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stack = utils.parse_stack(t)
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self._stub_create(1, instance_class=MyInstance)
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self.m.ReplayAll()
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self.create_resource(t, stack, 'JobServerConfig')
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rsrc = self.create_resource(t, stack, 'JobServerGroup')
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self.assertEqual(utils.PhysName(stack.name, rsrc.name),
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rsrc.FnGetRefId())
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rsrc.delete()
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self.m.VerifyAll()
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def test_missing_image(self):
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t = template_format.parse(ig_template)
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stack = utils.parse_stack(t)
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self.create_resource(t, stack, 'JobServerConfig')
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rsrc = stack['JobServerGroup']
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self.m.StubOutWithMock(instance.Instance, 'handle_create')
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not_found = exception.ImageNotFound(image_name='bla')
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instance.Instance.handle_create().AndRaise(not_found)
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self.m.StubOutWithMock(parser.Stack, 'validate')
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parser.Stack.validate()
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self.m.StubOutWithMock(nova_keypair.KeypairConstraint, 'validate')
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nova_keypair.KeypairConstraint.validate(
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mox.IgnoreArg(), mox.IgnoreArg()).MultipleTimes().AndReturn(True)
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self.m.StubOutWithMock(image.ImageConstraint, 'validate')
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image.ImageConstraint.validate(
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mox.IgnoreArg(), mox.IgnoreArg()).MultipleTimes().AndReturn(True)
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self.m.ReplayAll()
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create = scheduler.TaskRunner(rsrc.create)
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self.assertRaises(exception.ResourceFailure, create)
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self.assertEqual((rsrc.CREATE, rsrc.FAILED), rsrc.state)
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self.m.VerifyAll()
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def test_handle_update_size(self):
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t = template_format.parse(ig_template)
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properties = t['Resources']['JobServerGroup']['Properties']
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properties['Size'] = '2'
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stack = utils.parse_stack(t)
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self._stub_create(2)
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self.m.ReplayAll()
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self.create_resource(t, stack, 'JobServerConfig')
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rsrc = self.create_resource(t, stack, 'JobServerGroup')
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self.m.VerifyAll()
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self.m.UnsetStubs()
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# Increase min size to 5
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self._stub_create(3)
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self.m.StubOutWithMock(instance.Instance, 'FnGetAtt')
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instance.Instance.FnGetAtt('PublicIp').AndReturn('10.0.0.2')
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instance.Instance.FnGetAtt('PublicIp').AndReturn('10.0.0.3')
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instance.Instance.FnGetAtt('PublicIp').AndReturn('10.0.0.4')
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instance.Instance.FnGetAtt('PublicIp').AndReturn('10.0.0.5')
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instance.Instance.FnGetAtt('PublicIp').AndReturn('10.0.0.6')
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self.m.ReplayAll()
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update_snippet = copy.deepcopy(rsrc.parsed_template())
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update_snippet['Properties']['Size'] = '5'
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tmpl_diff = {'Properties': {'Size': '5'}}
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prop_diff = {'Size': '5'}
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self.assertIsNone(rsrc.handle_update(update_snippet, tmpl_diff,
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prop_diff))
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self.assertEqual('10.0.0.2,10.0.0.3,10.0.0.4,10.0.0.5,10.0.0.6',
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rsrc.FnGetAtt('InstanceList'))
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rsrc.delete()
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self.m.VerifyAll()
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def test_create_error(self):
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"""
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If a resource in an instance group fails to be created, the instance
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group itself will fail and the broken inner resource will remain.
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"""
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t = template_format.parse(ig_template)
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stack = utils.parse_stack(t)
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self.m.StubOutWithMock(parser.Stack, 'validate')
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parser.Stack.validate()
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self.m.StubOutWithMock(nova_keypair.KeypairConstraint, 'validate')
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nova_keypair.KeypairConstraint.validate(
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mox.IgnoreArg(), mox.IgnoreArg()).MultipleTimes().AndReturn(True)
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self.m.StubOutWithMock(image.ImageConstraint, 'validate')
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image.ImageConstraint.validate(
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mox.IgnoreArg(), mox.IgnoreArg()).MultipleTimes().AndReturn(True)
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self.m.StubOutWithMock(instance.Instance, 'handle_create')
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instance.Instance.handle_create().AndRaise(Exception)
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self.m.ReplayAll()
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self.create_resource(t, stack, 'JobServerConfig')
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self.assertRaises(
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exception.ResourceFailure,
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self.create_resource, t, stack, 'JobServerGroup')
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rsrc = stack['JobServerGroup']
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self.assertEqual((rsrc.CREATE, rsrc.FAILED), rsrc.state)
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# The failed inner resource remains
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self.assertEqual(1, len(rsrc.nested().resources))
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child_resource = rsrc.nested().resources.values()[0]
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self.assertEqual((child_resource.CREATE, child_resource.FAILED),
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child_resource.state)
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self.m.VerifyAll()
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def test_update_error(self):
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"""
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If a resource in an instance group fails to be created during an
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update, the instance group itself will fail and the broken inner
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resource will remain.
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"""
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t = template_format.parse(ig_template)
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stack = utils.parse_stack(t)
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self._stub_create(1)
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self.m.ReplayAll()
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self.create_resource(t, stack, 'JobServerConfig')
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rsrc = self.create_resource(t, stack, 'JobServerGroup')
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self.assertEqual(1, len(rsrc.nested().resources))
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succeeded_instance = rsrc.nested().resources.values()[0]
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self.m.VerifyAll()
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self.m.UnsetStubs()
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self.m.StubOutWithMock(parser.Stack, 'validate')
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parser.Stack.validate()
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self.m.StubOutWithMock(nova_keypair.KeypairConstraint, 'validate')
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nova_keypair.KeypairConstraint.validate(
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mox.IgnoreArg(), mox.IgnoreArg()).MultipleTimes().AndReturn(True)
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self.m.StubOutWithMock(image.ImageConstraint, 'validate')
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image.ImageConstraint.validate(
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mox.IgnoreArg(), mox.IgnoreArg()).MultipleTimes().AndReturn(True)
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self.m.StubOutWithMock(instance.Instance, 'handle_create')
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instance.Instance.handle_create().AndRaise(Exception)
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self.m.ReplayAll()
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update_snippet = copy.deepcopy(rsrc.parsed_template())
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update_snippet['Properties']['Size'] = '2'
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updater = scheduler.TaskRunner(rsrc.update, update_snippet)
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self.assertRaises(exception.ResourceFailure, updater)
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self.assertEqual((rsrc.UPDATE, rsrc.FAILED), rsrc.state)
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# The failed inner resource remains
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self.assertEqual(2, len(rsrc.nested().resources))
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child_resource = [r for r in rsrc.nested().resources.values()
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if r.name != succeeded_instance.name][0]
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self.assertEqual((child_resource.CREATE, child_resource.FAILED),
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child_resource.state)
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self.m.VerifyAll()
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def test_update_fail_badprop(self):
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t = template_format.parse(ig_template)
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properties = t['Resources']['JobServerGroup']['Properties']
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properties['Size'] = '2'
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stack = utils.parse_stack(t)
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self._stub_create(2)
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self.m.ReplayAll()
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self.create_resource(t, stack, 'JobServerConfig')
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rsrc = self.create_resource(t, stack, 'JobServerGroup')
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self.m.ReplayAll()
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update_snippet = copy.deepcopy(rsrc.parsed_template())
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update_snippet['Properties']['AvailabilityZones'] = ['wibble']
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updater = scheduler.TaskRunner(rsrc.update, update_snippet)
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self.assertRaises(resource.UpdateReplace, updater)
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rsrc.delete()
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self.m.VerifyAll()
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