Merge "dynamic action description"

watcher/applier/sync.py

@@ -0,0 +1,44 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2017 ZTE
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from watcher.applier.loading import default
+from watcher.common import context
+from watcher.common import exception
+from watcher import objects
+
+
+class Syncer(object):
+    """Syncs all available actions with the Watcher DB"""
+
+    def sync(self):
+        ctx = context.make_context()
+        action_loader = default.DefaultActionLoader()
+        available_actions = action_loader.list_available()
+        for action_type in available_actions.keys():
+            load_action = action_loader.load(action_type)
+            load_description = load_action.get_description()
+            try:
+                action_desc = objects.ActionDescription.get_by_type(
+                    ctx, action_type)
+                if action_desc.description != load_description:
+                    action_desc.description = load_description
+                    action_desc.save()
+            except exception.ActionDescriptionNotFound:
+                obj_action_desc = objects.ActionDescription(ctx)
+                obj_action_desc.action_type = action_type
+                obj_action_desc.description = load_description
+                obj_action_desc.create()