1 files changed, 44 insertions, 0 deletions
diff --git a/kubernetes/vvp/charts/vvp-em-uwsgi/resources/config/em/envbool.py b/kubernetes/vvp/charts/vvp-em-uwsgi/resources/config/em/envbool.py
new file mode 100644
index 0000000000..31f4385d16
--- /dev/null
+++ b/kubernetes/vvp/charts/vvp-em-uwsgi/resources/config/em/envbool.py
@@ -0,0 +1,44 @@
+# Copyright © 2018 Amdocs, AT&T, Bell Canada
+#
+# 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.
+
+"""
+envbool.py
+
+Return which environment is currently running on (to setting.py).
+
+"""
+import os
+
+
+def envbool(key, default=False, unknown=True):
+    """Return a boolean value based on that of an environment variable.
+
+    Environment variables have no native boolean type. They are always strings, and may be empty or
+    unset (which differs from empty.) Furthermore, notions of what is "truthy" in shell script
+    differ from that of python.
+
+    This function converts environment variables to python boolean True or False in
+    case-insensitive, expected ways to avoid pitfalls:
+
+        "True", "true", and "1" become True
+        "False", "false", and "0" become False
+        unset or empty becomes False by default (toggle with 'default' parameter.)
+        any other value becomes True by default (toggle with 'unknown' parameter.)
+
+    """
+    return {
+        'true': True, '1': True,  # 't': True,
+        'false': False, '0': False,  # 'f': False.
+        '': default,
+    }.get(os.getenv(key, '').lower(), unknown)