Add cps client to PCI app

- Add CPS client
- Add configuration to switch between
  CPS and config DB

Issue-ID: OPTFRA-978
Signed-off-by: krishnaa96 <krishna.moorthy6@wipro.com>
Change-Id: Ibce259123864a16e5f9e3b8e53563151d8036a88

1 files changed, 37 insertions, 0 deletions

diff --git a/apps/pci/optimizers/config/config_client.py b/apps/pci/optimizers/config/config_client.py
new file mode 100644
index 0000000..7e5a737
--- /dev/null
+++ b/apps/pci/optimizers/config/config_client.py
@@ -0,0 +1,37 @@
+# -------------------------------------------------------------------------
+#   Copyright (C) 2021 Wipro Limited.
+#
+#   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.
+#
+# -------------------------------------------------------------------------
+#
+
+
+class ConfigClient(object):
+
+    subclasses = {}
+
+    @classmethod
+    def register_subclass(cls, type):
+        def decorator(subclass):
+            cls.subclasses[type] = subclass
+            return subclass
+
+        return decorator
+
+    @classmethod
+    def create(cls, type):
+        if type not in cls.subclasses:
+            raise ValueError('Bad config client type {}'.format(type))
+
+        return cls.subclasses[type]()