neutron loadbalancer resource: provider property

Neutron LBaaS data model allows the users to pick a specific
provider to implement a given load balancer instance (described
by Pool in LBaaS v1.0 API). This commit brings this option into
the heat resources as a property and an attribute.

Co-Authored-By: Magesh GV <magesh.gv@oneconvergence.com>
Change-Id: Id55b8e615516c2ffd9d06980fb60707b207c356e

heat/engine/resources/openstack/neutron/loadbalancer.py

@@ -184,10 +184,10 @@ class Pool(neutron.NeutronResource):
 
     PROPERTIES = (
         PROTOCOL, SUBNET_ID, SUBNET, LB_METHOD, NAME, DESCRIPTION,
-        ADMIN_STATE_UP, VIP, MONITORS,
+        ADMIN_STATE_UP, VIP, MONITORS, PROVIDER,
     ) = (
         'protocol', 'subnet_id', 'subnet', 'lb_method', 'name', 'description',
-        'admin_state_up', 'vip', 'monitors',
+        'admin_state_up', 'vip', 'monitors', 'provider',
     )
 
     _VIP_KEYS = (
@@ -208,10 +208,10 @@ class Pool(neutron.NeutronResource):
 
     ATTRIBUTES = (
         ADMIN_STATE_UP_ATTR, NAME_ATTR, PROTOCOL_ATTR, SUBNET_ID_ATTR,
-        LB_METHOD_ATTR, DESCRIPTION_ATTR, TENANT_ID, VIP_ATTR,
+        LB_METHOD_ATTR, DESCRIPTION_ATTR, TENANT_ID, VIP_ATTR, PROVIDER_ATTR,
     ) = (
         'admin_state_up', 'name', 'protocol', 'subnet_id',
-        'lb_method', 'description', 'tenant_id', 'vip',
+        'lb_method', 'description', 'tenant_id', 'vip', 'provider',
     )
 
     properties_schema = {
@@ -268,6 +268,11 @@ class Pool(neutron.NeutronResource):
             default=True,
             update_allowed=True
         ),
+        PROVIDER: properties.Schema(
+            properties.Schema.STRING,
+            _('LBaaS provider to implement this load balancer instance.'),
+            support_status=support.SupportStatus(version='2015.2'),
+        ),
         VIP: properties.Schema(
             properties.Schema.MAP,
             _('IP address and port of the pool.'),
@@ -376,6 +381,11 @@ class Pool(neutron.NeutronResource):
             _('Vip associated with the pool.'),
             type=attributes.Schema.MAP
         ),
+        PROVIDER_ATTR: attributes.Schema(
+            _('Provider implementing this load balancer instance.'),
+            support_status=support.SupportStatus(version='2015.2'),
+            type=attributes.Schema.STRING,
+        ),
     }
 
     def validate(self):

heat/tests/neutron/test_neutron_loadbalancer.py

@@ -59,6 +59,22 @@ resources:
         subnet: sub9999
 '''
 
+pool_template_with_provider = '''
+heat_template_version: 2015-04-30
+description: Template to test load balancer resources
+resources:
+  pool:
+    type: OS::Neutron::Pool
+    properties:
+      protocol: HTTP
+      subnet: sub123
+      lb_method: ROUND_ROBIN
+      provider: test_prov
+      vip:
+        protocol_port: 80
+
+'''
+
 pool_template = '''
 heat_template_version: 2015-04-30
 description: Template to test load balancer resources
@@ -547,6 +563,40 @@ class PoolTest(common.HeatTestCase):
         self.assertEqual((rsrc.CREATE, rsrc.COMPLETE), rsrc.state)
         self.m.VerifyAll()
 
+    def test_create_pool_with_provider(self):
+        neutronV20.find_resourceid_by_name_or_id(
+            mox.IsA(neutronclient.Client),
+            'subnet',
+            'sub123'
+        ).MultipleTimes().AndReturn('sub123')
+        neutronclient.Client.create_pool({
+            'pool': {
+                'subnet_id': 'sub123', 'protocol': u'HTTP',
+                'name': utils.PhysName('test_stack', 'pool'),
+                'lb_method': 'ROUND_ROBIN', 'admin_state_up': True,
+                'provider': 'test_prov'}}
+        ).AndReturn({'pool': {'id': '5678'}})
+        neutronclient.Client.create_vip({
+            'vip': {
+                'protocol': u'HTTP', 'name': 'pool.vip',
+                'admin_state_up': True, 'subnet_id': u'sub123',
+                'pool_id': '5678', 'protocol_port': 80}}
+        ).AndReturn({'vip': {'id': 'xyz'}})
+        neutronclient.Client.show_pool('5678').MultipleTimes().AndReturn(
+            {'pool': {'status': 'ACTIVE', 'provider': 'test_prov'}})
+        neutronclient.Client.show_vip('xyz').AndReturn(
+            {'vip': {'status': 'ACTIVE'}})
+        snippet = template_format.parse(pool_template_with_provider)
+        self.stack = utils.parse_stack(snippet)
+        resource_defns = self.stack.t.resource_definitions(self.stack)
+        rsrc = loadbalancer.Pool(
+            'pool', resource_defns['pool'], self.stack)
+        self.m.ReplayAll()
+        scheduler.TaskRunner(rsrc.create)()
+        self.assertEqual((rsrc.CREATE, rsrc.COMPLETE), rsrc.state)
+        self.assertEqual("test_prov", rsrc.FnGetAtt("provider"))
+        self.m.VerifyAll()
+
     def test_failing_validation_with_session_persistence(self):
         msg = _('Property cookie_name is required, when '
                 'session_persistence type is set to APP_COOKIE.')