Sync template processing

tripleo-heat-templates and tripleo-common now both have their own code
for template processing as of Ie664c9c5f455b7320a58a26f35bc403355408d9b.

As the above commit mentions, this duplication should be refactored in
the future so these 2 processes can share the same code. In the short
term however, we need to keep these 2 in sync. This patch adds handling
of the disable_constraints logic to the tripleo-common code so that the
2 are in sync.

Partially-implements: blueprint split-stack-software-configuration
Change-Id: Id318d0bc3a6358749b7b83b16640012611f15c4f

tripleo_common/actions/templates.py

@@ -134,6 +134,9 @@ class ProcessTemplatesAction(base.TripleOAction):
             raise Exception(error_msg)
 
         role_names = [r.get('name') for r in role_data]
+        r_map = {}
+        for r in role_data:
+            r_map[r.get('name')] = r
         excl_templates = j2_excl_data.get('name')
 
         for f in [f.get('name') for f in container_files[1]]:
@@ -150,6 +153,8 @@ class ProcessTemplatesAction(base.TripleOAction):
                 for role in role_names:
                     j2_data = {'role': role}
                     LOG.info("jinja2 rendering role %s" % role)
+                    if r_map[role].get('disable_constraints', False):
+                        j2_data['disable_constraints'] = True
                     out_f = "-".join(
                         [role.lower(),
                          os.path.basename(f).replace('.role.j2.yaml',

tripleo_common/tests/actions/test_templates.py

@@ -71,6 +71,27 @@ name:
 J2_EXCLUDES_EMPTY_FILE = """
 """
 
+ROLE_DATA_DISABLE_CONSTRAINTS_YAML = """
+- name: RoleWithDisableConstraints
+  disable_constraints: True
+"""
+
+JINJA_SNIPPET_DISABLE_CONSTRAINTS = """
+  {{role}}Image:
+    type: string
+    default: overcloud-full
+{% if disable_constraints is not defined %}
+    constraints:
+      - custom_constraint: glance.image
+{% endif %}
+"""
+
+EXPECTED_JINJA_RESULT_DISABLE_CONSTRAINTS = """
+  RoleWithDisableConstraintsImage:
+    type: string
+    default: overcloud-full
+"""
+
 
 class UploadTemplatesActionTest(base.TestCase):
 
@@ -190,6 +211,44 @@ class ProcessTemplatesActionTest(base.TestCase):
         swift.put_object.assert_has_calls(
             put_object_mock_calls, any_order=True)
 
+    @mock.patch('tripleo_common.actions.base.TripleOAction.get_object_client')
+    @mock.patch('mistral.context.ctx')
+    def test_process_custom_roles_disable_constraints(
+            self, ctx_mock, get_obj_client_mock):
+
+        def return_multiple_files(*args):
+            if args[1] == constants.OVERCLOUD_J2_NAME:
+                return ['', JINJA_SNIPPET_DISABLE_CONSTRAINTS]
+            if args[1] == 'disable-constraints.role.j2.yaml':
+                return ['', JINJA_SNIPPET_DISABLE_CONSTRAINTS]
+            if args[1] == constants.OVERCLOUD_J2_EXCLUDES:
+                return ['', J2_EXCLUDES]
+            elif args[1] == constants.OVERCLOUD_J2_ROLES_NAME:
+                return ['', ROLE_DATA_DISABLE_CONSTRAINTS_YAML]
+
+        def return_container_files(*args):
+            return ('headers', [{'name': constants.OVERCLOUD_J2_NAME},
+                                {'name': 'disable-constraints.role.j2.yaml'},
+                                {'name': constants.OVERCLOUD_J2_ROLES_NAME}])
+
+        # setup swift
+        swift = mock.MagicMock()
+        swift.get_object = mock.MagicMock(side_effect=return_multiple_files)
+        swift.get_container = mock.MagicMock(
+            side_effect=return_container_files)
+        get_obj_client_mock.return_value = swift
+
+        # Test
+        action = templates.ProcessTemplatesAction()
+        action._process_custom_roles()
+
+        put_object_mock_call = mock.call(
+            constants.DEFAULT_CONTAINER_NAME,
+            "rolewithdisableconstraints-disable-constraints.yaml",
+            EXPECTED_JINJA_RESULT_DISABLE_CONSTRAINTS)
+        self.assertEqual(swift.put_object.call_args_list[1],
+                         put_object_mock_call)
+
     @mock.patch('tripleo_common.actions.base.TripleOAction.get_object_client')
     @mock.patch('mistral.context.ctx')
     def test_j2_render_and_put(self, ctx_mock, get_obj_client_mock):