Add test for performance in constraint validation

There are follow important changes in patch:
 - New constraint was added. This constraint emulate delay during
   resolving custom constraint for property.
 - New property was added for TestResource. This property uses new
   constraint.
 - Added Rally scenario create-delete, which uses template with
   ResourceGroup of TestResources with custom constraint.


Depends-On: I06183138d54c1cb971a58a158a15f3f5b25cba4d

Change-Id: I53d83f59be9bd27db451f87aaae2d8446f287c17

heat/engine/constraint/common_constraints.py

@@ -12,6 +12,7 @@
 #    under the License.
 
 import croniter
+import eventlet
 import netaddr
 import pytz
 import six
@@ -23,6 +24,12 @@ from heat.common.i18n import _
 from heat.engine import constraints
 
 
+class TestConstraintDelay(constraints.BaseCustomConstraint):
+
+    def validate_with_client(self, client, value):
+        eventlet.sleep(value)
+
+
 class IPConstraint(constraints.BaseCustomConstraint):
 
     def validate(self, value, context):

heat/engine/resources/openstack/heat/test_resource.py

@@ -18,6 +18,7 @@ import six
 
 from heat.common.i18n import _
 from heat.engine import attributes
+from heat.engine import constraints
 from heat.engine import properties
 from heat.engine import resource
 from heat.engine import support
@@ -44,10 +45,12 @@ class TestResource(resource.Resource):
         VALUE, UPDATE_REPLACE, FAIL,
         CLIENT_NAME, ENTITY_NAME,
         WAIT_SECS, ACTION_WAIT_SECS, ATTR_WAIT_SECS,
+        CONSTRAINT_PROP_SECS,
     ) = (
         'value', 'update_replace', 'fail',
         'client_name', 'entity_name',
         'wait_secs', 'action_wait_secs', 'attr_wait_secs',
+        'constraint_prop_secs',
     )
 
     ATTRIBUTES = (
@@ -57,6 +60,16 @@ class TestResource(resource.Resource):
     )
 
     properties_schema = {
+        CONSTRAINT_PROP_SECS: properties.Schema(
+            properties.Schema.NUMBER,
+            _('Number value for delay during resolve constraint.'),
+            default=0,
+            update_allowed=True,
+            constraints=[
+                constraints.CustomConstraint('test_constr')
+            ],
+            support_status=support.SupportStatus(version='6.0.0')
+        ),
         ATTR_WAIT_SECS: properties.Schema(
             properties.Schema.NUMBER,
             _('Number value for timeout during resolving output value.'),

rally-scenarios/extra/rg_template_with_constraint.yaml

@@ -0,0 +1,19 @@
+heat_template_version: 2013-05-23
+description: Template for testing caching.
+parameters:
+  count:
+    type: number
+    default: 40
+  delay:
+    type: number
+    default: 0.3
+
+resources:
+  rg:
+    type: OS::Heat::ResourceGroup
+    properties:
+      count: {get_param: count}
+      resource_def:
+          type: OS::Heat::TestResource
+          properties:
+            constraint_prop_secs: {get_param: delay}

rally-scenarios/heat-fakevirt.yaml

@@ -20,3 +20,15 @@
         users:
           tenants: 10
           users_per_tenant: 3
+
+    -
+      args:
+        template_path: "~/.rally/extra/rg_template_with_constraint.yaml"
+      runner:
+        type: "constant"
+        times: 10
+        concurrency: 2
+      context:
+        users:
+          tenants: 1
+          users_per_tenant: 1

setup.cfg

@@ -103,6 +103,7 @@ heat.constraints =
     ip_addr = heat.engine.constraint.common_constraints:IPConstraint
     mac_addr = heat.engine.constraint.common_constraints:MACConstraint
     net_cidr = heat.engine.constraint.common_constraints:CIDRConstraint
+    test_constr = heat.engine.constraint.common_constraints:TestConstraintDelay
     keystone.role = heat.engine.clients.os.keystone:KeystoneRoleConstraint
     keystone.domain = heat.engine.clients.os.keystone:KeystoneDomainConstraint
     keystone.project = heat.engine.clients.os.keystone:KeystoneProjectConstraint