Add and expose a feature flag library

src/etos_lib/etos.py

@@ -1,4 +1,4 @@
-# Copyright 2020 Axis Communications AB.
+# Copyright 2020-2021 Axis Communications AB.
 #
 # For a full list of individual contributors, please see the commit history.
 #
@@ -23,6 +23,7 @@
 from .lib.utils import Utils
 from .lib.http import Http
 from .lib.debug import Debug
+from .lib.feature_flags import FeatureFlags
 from .lib.database import Database
 from .lib.secrets import Secrets
 from .lib.exceptions import (
@@ -46,6 +47,7 @@ class ETOS:  # pylint: disable=too-many-instance-attributes
     __graphql = None
     __http = None
     __debug = None
+    __feature_flags = None
     __secrets = None
     __database = None
 
@@ -89,6 +91,13 @@ def debug(self):
             self.__debug = Debug()
         return self.__debug
 
+    @property
+    def feature_flags(self):
+        """Entry for feature flags for ETOS."""
+        if self.__feature_flags is None:
+            self.__feature_flags = FeatureFlags()
+        return self.__feature_flags
+
     @property
     def monitor(self):
         """Entry for ETOS Library monitor service."""

src/etos_lib/lib/feature_flags.py

@@ -0,0 +1,25 @@
+# Copyright 2021 Axis Communications AB.
+#
+# For a full list of individual contributors, please see the commit history.
+#
+# 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.
+"""ETOS feature flags."""
+import os
+
+class FeatureFlags:
+    """Feature flags for ETOS."""
+
+    @property
+    def clm(self):
+        """Whether or not CLM sending shall be enabled."""
+        return os.getenv("ETOS_FEATURE_CLM", "true") == "true"