resource_manager: Add OrderedEnum

Borrowed from:
<https://github.com/woodruffw/ordered_enum/tree/master/src/ordered_enum>

1 files changed, 13 insertions, 0 deletions

diff --git a/wqflask/wqflask/resource_manager.py b/wqflask/wqflask/resource_manager.py
index dfd853b2..330600ed 100644
--- a/wqflask/wqflask/resource_manager.py
+++ b/wqflask/wqflask/resource_manager.py
@@ -1,13 +1,26 @@
 import redis
 import json
+import functools
 
+from enum import Enum
 
 
 
 from typing import Dict
 
 
+@functools.total_ordering
+class OrderedEnum(Enum):
+    @classmethod
+    @functools.lru_cache(None)
+    def _member_list(cls):
+        return list(cls)
 
+    def __lt__(self, other):
+        if self.__class__ is other.__class__:
+            member_list = self.__class__._member_list()
+            return member_list.index(self) < member_list.index(other)
+        return NotImplemented