Change to use Enum

Changes operation and operational status types to
IntEnums

Change-Id: If204c3a7d3cf0f3407792a5ae54b4c1077898e67
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
diff --git a/osm_common/dataclasses/temporal_dataclasses.py b/osm_common/dataclasses/temporal_dataclasses.py
index 3b8a857..37736c7 100644
--- a/osm_common/dataclasses/temporal_dataclasses.py
+++ b/osm_common/dataclasses/temporal_dataclasses.py
@@ -16,7 +16,9 @@
 #######################################################################################
 
 from dataclasses import dataclass
+from enum import auto, IntEnum
 
+#######################################################################################
 # Workflow Dataclasses
 
 
@@ -42,6 +44,7 @@
     op_id: str
 
 
+#######################################################################################
 # Activity Dataclasses
 
 
@@ -60,6 +63,12 @@
     vim_uuid: str
 
 
+class VimState(IntEnum):
+    PROCESSING = auto()
+    ENABLED = auto()
+    ERROR = auto()
+
+
 @dataclass
 class UpdateVimStateInput:
     """
@@ -71,7 +80,7 @@
         The UUID of the VIM account as stored in the OSM vim
         collection in Mongo
 
-    operational_state : str
+    operational_state : VimState
         A representation of the operational state (ENABLED or ERROR)
         of the VIM.
 
@@ -82,10 +91,15 @@
     """
 
     vim_uuid: str
-    operational_state: str
+    operational_state: VimState
     message: str
 
 
+class VimOperationState(IntEnum):
+    COMPLETED = auto()
+    FAILED = auto()
+
+
 @dataclass
 class UpdateVimOperationStateInput:
     """
@@ -102,7 +116,7 @@
         The operation (task) id for this workflow.  This is used
         to update the status of the operation in Mongo vim collection.
 
-    op_state : str
+    op_state : VimOperationState
         A representation of the state of the specified operation id,
         such as COMPLETED, or FAILED.
 
@@ -114,7 +128,7 @@
 
     vim_uuid: str
     op_id: str
-    op_state: str
+    op_state: VimOperationState
     message: str