419 lines
14 KiB
Python
419 lines
14 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 mock
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import mox
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from oslo.config import cfg
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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.clients.os import glance
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from heat.engine.clients.os import nova
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from heat.engine import resource
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from heat.engine.resources.aws import wait_condition_handle as aws_wch
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from heat.engine.resources import instance
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from heat.engine.resources import loadbalancer as lb
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from heat.engine import rsrc_defn
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from heat.engine import scheduler
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from heat.tests import common
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from heat.tests import utils
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from heat.tests.v1_1 import fakes as fakes_v1_1
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lb_template = '''
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{
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"AWSTemplateFormatVersion": "2010-09-09",
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"Description": "LB Template",
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"Parameters" : {
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"KeyName" : {
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"Description" : "KeyName",
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"Type" : "String",
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"Default" : "test"
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}
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},
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"Resources": {
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"WikiServerOne": {
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"Type": "AWS::EC2::Instance",
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"Properties": {
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"ImageId": "F17-x86_64-gold",
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"InstanceType" : "m1.large",
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"KeyName" : "test",
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"UserData" : "some data"
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}
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},
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"LoadBalancer" : {
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"Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
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"Properties" : {
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"AvailabilityZones" : ["nova"],
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"Instances" : [{"Ref": "WikiServerOne"}],
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"Listeners" : [ {
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"LoadBalancerPort" : "80",
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"InstancePort" : "80",
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"Protocol" : "HTTP"
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}]
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}
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}
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}
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}
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'''
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lb_template_nokey = '''
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{
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"AWSTemplateFormatVersion": "2010-09-09",
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"Description": "LB Template",
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"Resources": {
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"WikiServerOne": {
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"Type": "AWS::EC2::Instance",
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"Properties": {
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"ImageId": "F17-x86_64-gold",
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"InstanceType" : "m1.large",
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"UserData" : "some data"
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}
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},
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"LoadBalancer" : {
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"Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
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"Properties" : {
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"AvailabilityZones" : ["nova"],
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"Instances" : [{"Ref": "WikiServerOne"}],
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"Listeners" : [ {
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"LoadBalancerPort" : "80",
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"InstancePort" : "80",
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"Protocol" : "HTTP"
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}]
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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 LoadBalancerTest(common.HeatTestCase):
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def setUp(self):
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super(LoadBalancerTest, self).setUp()
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self.fc = fakes_v1_1.FakeClient()
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self.m.StubOutWithMock(nova.NovaClientPlugin, '_create')
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self.m.StubOutWithMock(self.fc.servers, 'create')
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self.m.StubOutWithMock(resource.Resource, 'metadata_set')
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self.stub_keystoneclient(username='test_stack.CfnLBUser')
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cfg.CONF.set_default('heat_waitcondition_server_url',
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'http://server.test:8000/v1/waitcondition')
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def create_loadbalancer(self, t, stack, resource_name):
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resource_defns = stack.t.resource_definitions(stack)
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rsrc = lb.LoadBalancer(resource_name,
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resource_defns[resource_name],
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stack)
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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 _mock_get_image_id_success(self, imageId_input, imageId):
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self.m.StubOutWithMock(glance.GlanceClientPlugin, 'get_image_id')
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glance.GlanceClientPlugin.get_image_id(
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imageId_input).MultipleTimes().AndReturn(imageId)
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def _create_stubs(self, key_name='test', stub_meta=True):
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server_name = utils.PhysName(
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utils.PhysName('test_stack', 'LoadBalancer'),
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'LB_instance',
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limit=instance.Instance.physical_resource_name_limit)
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nova.NovaClientPlugin._create().AndReturn(self.fc)
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self.fc.servers.create(
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flavor=2, image=746, key_name=key_name,
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meta=None, nics=None, name=server_name,
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scheduler_hints=None, userdata=mox.IgnoreArg(),
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security_groups=None, availability_zone=None,
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block_device_mapping=None).AndReturn(
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self.fc.servers.list()[1])
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if stub_meta:
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resource.Resource.metadata_set(mox.IgnoreArg()).AndReturn(None)
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self.m.StubOutWithMock(aws_wch.WaitConditionHandle, 'get_status')
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aws_wch.WaitConditionHandle.get_status().AndReturn(['SUCCESS'])
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def test_loadbalancer(self):
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self._mock_get_image_id_success(u'F20-x86_64-cfntools', 746)
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self._create_stubs()
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self.m.ReplayAll()
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t = template_format.parse(lb_template)
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s = utils.parse_stack(t)
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s.store()
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rsrc = self.create_loadbalancer(t, s, 'LoadBalancer')
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id_list = []
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resource_defns = s.t.resource_definitions(s)
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for inst_name in ['WikiServerOne1', 'WikiServerOne2']:
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inst = instance.Instance(inst_name,
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resource_defns['WikiServerOne'],
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s)
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id_list.append(inst.FnGetRefId())
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prop_diff = {'Instances': id_list}
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props = copy.copy(rsrc.properties.data)
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props.update(prop_diff)
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update_defn = rsrc_defn.ResourceDefinition(rsrc.name, rsrc.type(),
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props)
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rsrc.handle_update(update_defn, {}, prop_diff)
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self.assertIsNone(rsrc.handle_update(rsrc.t, {}, {}))
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self.m.VerifyAll()
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def test_loadbalancer_nokey(self):
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self._mock_get_image_id_success(u'F20-x86_64-cfntools', 746)
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self._create_stubs(key_name=None, stub_meta=False)
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self.m.ReplayAll()
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t = template_format.parse(lb_template_nokey)
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s = utils.parse_stack(t)
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s.store()
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rsrc = self.create_loadbalancer(t, s, 'LoadBalancer')
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self.assertEqual('LoadBalancer', rsrc.name)
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self.m.VerifyAll()
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def test_loadbalancer_validate_hchk_good(self):
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rsrc = self.setup_loadbalancer()
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rsrc._parse_nested_stack = mock.Mock()
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hc = {
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'Target': 'HTTP:80/',
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'HealthyThreshold': '3',
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'UnhealthyThreshold': '5',
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'Interval': '30',
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'Timeout': '5'}
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rsrc.t['Properties']['HealthCheck'] = hc
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self.assertIsNone(rsrc.validate())
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def test_loadbalancer_validate_hchk_int_gt_tmo(self):
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rsrc = self.setup_loadbalancer()
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rsrc._parse_nested_stack = mock.Mock()
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hc = {
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'Target': 'HTTP:80/',
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'HealthyThreshold': '3',
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'UnhealthyThreshold': '5',
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'Interval': '30',
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'Timeout': '35'}
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rsrc.t['Properties']['HealthCheck'] = hc
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self.assertEqual(
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{'Error': 'Interval must be larger than Timeout'},
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rsrc.validate())
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def test_loadbalancer_validate_badtemplate(self):
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cfg.CONF.set_override('loadbalancer_template', '/a/noexist/x.y')
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rsrc = self.setup_loadbalancer()
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self.assertRaises(exception.StackValidationFailed, rsrc.validate)
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def setup_loadbalancer(self, include_keyname=True):
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template = template_format.parse(lb_template)
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if not include_keyname:
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del template['Parameters']['KeyName']
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stack = utils.parse_stack(template)
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resource_name = 'LoadBalancer'
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lb_defn = stack.t.resource_definitions(stack)[resource_name]
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return lb.LoadBalancer(resource_name, lb_defn, stack)
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def test_loadbalancer_refid(self):
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rsrc = self.setup_loadbalancer()
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rsrc.resource_id = mock.Mock(return_value='not-this')
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self.assertEqual('LoadBalancer', rsrc.FnGetRefId())
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def test_loadbalancer_attr_dnsname(self):
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rsrc = self.setup_loadbalancer()
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rsrc.get_output = mock.Mock(return_value='1.3.5.7')
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self.assertEqual('1.3.5.7', rsrc.FnGetAtt('DNSName'))
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rsrc.get_output.assert_called_once_with('PublicIp')
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def test_loadbalancer_attr_not_supported(self):
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rsrc = self.setup_loadbalancer()
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for attr in ['CanonicalHostedZoneName',
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'CanonicalHostedZoneNameID',
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'SourceSecurityGroup.GroupName',
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'SourceSecurityGroup.OwnerAlias']:
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self.assertEqual('', rsrc.FnGetAtt(attr))
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def test_loadbalancer_attr_invalid(self):
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rsrc = self.setup_loadbalancer()
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self.assertRaises(exception.InvalidTemplateAttribute,
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rsrc.FnGetAtt, 'Foo')
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def test_child_params_without_key_name(self):
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rsrc = self.setup_loadbalancer(False)
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self.assertEqual({}, rsrc.child_params())
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def test_child_params_with_key_name(self):
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rsrc = self.setup_loadbalancer()
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params = rsrc.child_params()
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self.assertEqual('test', params['KeyName'])
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def test_child_template_without_key_name(self):
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rsrc = self.setup_loadbalancer(False)
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parsed_template = {
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'Resources': {'LB_instance': {'Properties': {'KeyName': 'foo'}}},
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'Parameters': {'KeyName': 'foo'}
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}
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rsrc.get_parsed_template = mock.Mock(return_value=parsed_template)
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tmpl = rsrc.child_template()
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self.assertNotIn('KeyName', tmpl['Parameters'])
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self.assertNotIn('KeyName',
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tmpl['Resources']['LB_instance']['Properties'])
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def test_child_template_with_key_name(self):
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rsrc = self.setup_loadbalancer()
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rsrc.get_parsed_template = mock.Mock(return_value='foo')
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self.assertEqual('foo', rsrc.child_template())
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class HaProxyConfigTest(common.HeatTestCase):
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def setUp(self):
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super(HaProxyConfigTest, self).setUp()
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stack = utils.parse_stack(template_format.parse(lb_template))
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resource_name = 'LoadBalancer'
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lb_defn = stack.t.resource_definitions(stack)[resource_name]
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self.lb = lb.LoadBalancer(resource_name, lb_defn, stack)
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self.lb.client_plugin = mock.Mock()
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def _mock_props(self, props):
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def get_props(name):
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return props[name]
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self.lb.properties = mock.MagicMock()
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self.lb.properties.__getitem__.side_effect = get_props
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def test_combined(self):
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self.lb._haproxy_config_global = mock.Mock(return_value='one,')
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self.lb._haproxy_config_frontend = mock.Mock(return_value='two,')
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self.lb._haproxy_config_backend = mock.Mock(return_value='three,')
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self.lb._haproxy_config_servers = mock.Mock(return_value='four')
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actual = self.lb._haproxy_config([3, 5])
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self.assertEqual('one,two,three,four\n', actual)
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self.lb._haproxy_config_global.assert_called_once_with()
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self.lb._haproxy_config_frontend.assert_called_once_with()
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self.lb._haproxy_config_backend.assert_called_once_with()
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self.lb._haproxy_config_servers.assert_called_once_with([3, 5])
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def test_global(self):
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exp = '''
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global
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daemon
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maxconn 256
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stats socket /tmp/.haproxy-stats
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defaults
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mode http
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timeout connect 5000ms
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timeout client 50000ms
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timeout server 50000ms
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'''
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actual = self.lb._haproxy_config_global()
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self.assertEqual(exp, actual)
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def test_frontend(self):
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props = {'HealthCheck': {},
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'Listeners': [{'LoadBalancerPort': 4014}]}
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self._mock_props(props)
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exp = '''
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frontend http
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bind *:4014
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default_backend servers
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'''
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actual = self.lb._haproxy_config_frontend()
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self.assertEqual(exp, actual)
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def test_backend_with_timeout(self):
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props = {'HealthCheck': {'Timeout': 43}}
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self._mock_props(props)
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actual = self.lb._haproxy_config_backend()
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exp = '''
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backend servers
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balance roundrobin
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option http-server-close
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option forwardfor
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option httpchk
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timeout check 43s
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'''
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self.assertEqual(exp, actual)
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def test_backend_no_timeout(self):
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self._mock_props({'HealthCheck': None})
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be = self.lb._haproxy_config_backend()
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exp = '''
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backend servers
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balance roundrobin
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option http-server-close
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option forwardfor
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option httpchk
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'''
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self.assertEqual(exp, be)
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def test_servers_none(self):
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props = {'HealthCheck': {},
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'Listeners': [{'InstancePort': 1234}]}
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self._mock_props(props)
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actual = self.lb._haproxy_config_servers([])
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exp = ''
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self.assertEqual(exp, actual)
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def test_servers_no_check(self):
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props = {'HealthCheck': {},
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'Listeners': [{'InstancePort': 4511}]}
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self._mock_props(props)
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def fake_to_ipaddr(inst):
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return '192.168.1.%s' % inst
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to_ip = self.lb.client_plugin.return_value.server_to_ipaddress
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to_ip.side_effect = fake_to_ipaddr
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actual = self.lb._haproxy_config_servers(range(1, 3))
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exp = '''
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server server1 192.168.1.1:4511
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server server2 192.168.1.2:4511'''
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self.assertEqual(exp.replace('\n', '', 1), actual)
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def test_servers_servers_and_check(self):
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props = {'HealthCheck': {'HealthyThreshold': 1,
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'Interval': 2,
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'Target': 'HTTP:80/',
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'Timeout': 45,
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'UnhealthyThreshold': 5
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},
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'Listeners': [{'InstancePort': 1234}]}
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self._mock_props(props)
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def fake_to_ipaddr(inst):
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return '192.168.1.%s' % inst
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to_ip = self.lb.client_plugin.return_value.server_to_ipaddress
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to_ip.side_effect = fake_to_ipaddr
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actual = self.lb._haproxy_config_servers(range(1, 3))
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exp = '''
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server server1 192.168.1.1:1234 check inter 2s fall 5 rise 1
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server server2 192.168.1.2:1234 check inter 2s fall 5 rise 1'''
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self.assertEqual(exp.replace('\n', '', 1), actual)
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