415 lines
15 KiB
Python
415 lines
15 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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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 nova
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from heat.engine import node_data
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from heat.engine.resources.aws.lb import loadbalancer as lb
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from heat.engine import rsrc_defn
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from heat.tests import common
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from heat.tests.openstack.nova import fakes as fakes_nova
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from heat.tests import utils
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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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"LbFlavor" : {
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"Description" : "Flavor to use for LoadBalancer instance",
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"Type": "String",
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"Default": "m1.heat"
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},
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"LbImageId" : {
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"Description" : "Image to use",
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"Type" : "String",
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"Default" : "image123"
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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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"SecurityGroups": ["sg_1"],
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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_nova.FakeClient()
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def test_loadbalancer(self):
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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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resource_name = 'LoadBalancer'
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lb_defn = s.t.resource_definitions(s)[resource_name]
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rsrc = lb.LoadBalancer(resource_name, lb_defn, s)
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self.patchobject(nova.NovaClientPlugin, '_create',
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return_value=self.fc)
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initial_md = {'AWS::CloudFormation::Init':
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{'config':
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{'files':
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{'/etc/haproxy/haproxy.cfg': {'content': 'initial'}}}}}
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ha_cfg = '\n'.join(['\nglobal', ' daemon', ' maxconn 256',
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' stats socket /tmp/.haproxy-stats',
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'\ndefaults',
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' mode http\n timeout connect 5000ms',
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' timeout client 50000ms',
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' timeout server 50000ms\n\nfrontend http',
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' bind *:80\n default_backend servers',
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'\nbackend servers\n balance roundrobin',
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' option http-server-close',
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' option forwardfor\n option httpchk',
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'\n server server1 1.2.3.4:80',
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' server server2 0.0.0.0:80\n'])
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expected_md = {'AWS::CloudFormation::Init':
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{'config':
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{'files':
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{'/etc/haproxy/haproxy.cfg': {
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'content': ha_cfg}}}}}
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md = mock.Mock()
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md.metadata_get.return_value = copy.deepcopy(initial_md)
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rsrc.nested = mock.Mock(return_value={'LB_instance': md})
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prop_diff = {'Instances': ['WikiServerOne1', 'WikiServerOne2']}
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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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md.metadata_get.assert_called_once_with()
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md.metadata_set.assert_called_once_with(expected_md)
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def test_loadbalancer_validate_hchk_good(self):
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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 = self.setup_loadbalancer(hc=hc)
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rsrc._parse_nested_stack = mock.Mock()
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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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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 = self.setup_loadbalancer(hc=hc)
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rsrc._parse_nested_stack = mock.Mock()
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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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enforce_type=True)
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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_magic=True, cache_data=None, hc=None):
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template = template_format.parse(lb_template)
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if not include_magic:
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del template['Parameters']['KeyName']
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del template['Parameters']['LbFlavor']
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del template['Parameters']['LbImageId']
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if hc is not None:
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props = template['Resources']['LoadBalancer']['Properties']
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props['HealthCheck'] = hc
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self.stack = utils.parse_stack(template, cache_data=cache_data)
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resource_name = 'LoadBalancer'
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lb_defn = self.stack.t.resource_definitions(self.stack)[resource_name]
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return lb.LoadBalancer(resource_name, lb_defn, self.stack)
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def test_loadbalancer_refid(self):
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rsrc = self.setup_loadbalancer()
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self.assertEqual('LoadBalancer', rsrc.FnGetRefId())
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def test_loadbalancer_refid_convergence_cache_data(self):
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cache_data = {'LoadBalancer': node_data.NodeData.from_dict({
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'uuid': mock.ANY,
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'id': mock.ANY,
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'action': 'CREATE',
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'status': 'COMPLETE',
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'reference_id': 'LoadBalancer_convg_mock'
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})}
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rsrc = self.setup_loadbalancer(cache_data=cache_data)
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self.assertEqual('LoadBalancer_convg_mock', 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.assertNotIn('KeyName', 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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def test_child_params_with_flavor(self):
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rsrc = self.setup_loadbalancer()
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params = rsrc.child_params()
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self.assertEqual('m1.heat', params['LbFlavor'])
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def test_child_params_without_flavor(self):
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rsrc = self.setup_loadbalancer(False)
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params = rsrc.child_params()
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self.assertNotIn('LbFlavor', params)
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def test_child_params_with_image_id(self):
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rsrc = self.setup_loadbalancer()
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params = rsrc.child_params()
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self.assertEqual('image123', params['LbImageId'])
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def test_child_params_without_image_id(self):
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rsrc = self.setup_loadbalancer(False)
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params = rsrc.child_params()
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self.assertNotIn('LbImageId', params)
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def test_child_params_with_sec_gr(self):
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rsrc = self.setup_loadbalancer(False)
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params = rsrc.child_params()
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expected = {'SecurityGroups': ['sg_1']}
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self.assertEqual(expected, params)
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def test_child_params_default_sec_gr(self):
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template = template_format.parse(lb_template)
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del template['Parameters']['KeyName']
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del template['Parameters']['LbFlavor']
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del template['Resources']['LoadBalancer']['Properties'][
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'SecurityGroups']
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del template['Parameters']['LbImageId']
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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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rsrc = lb.LoadBalancer(resource_name, lb_defn, stack)
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params = rsrc.child_params()
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# None value means, that will be used default [] for parameter
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expected = {'SecurityGroups': None}
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self.assertEqual(expected, params)
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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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self.stack = utils.parse_stack(template_format.parse(lb_template))
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resource_name = 'LoadBalancer'
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lb_defn = self.stack.t.resource_definitions(self.stack)[resource_name]
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self.lb = lb.LoadBalancer(resource_name, lb_defn, self.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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