From ae014c3eeb3a797434f7698a7e5ae310c94e5093 Mon Sep 17 00:00:00 2001
From: Jed Reynolds <jed@candelatech.com>
Date: Thu, 4 Jun 2020 22:52:09 -0700
Subject: [PATCH] LFUtils.py: updates portListToAliasMap to have debug param,
 raise exception on empty/no results

---
 py-json/LANforge/LFUtils.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/py-json/LANforge/LFUtils.py b/py-json/LANforge/LFUtils.py
index 20c1f077..0a32b080 100644
--- a/py-json/LANforge/LFUtils.py
+++ b/py-json/LANforge/LFUtils.py
@@ -204,10 +204,12 @@ def generateRandomHex():
 #       }
 #   },
 #   { ... }
-
-def portListToAliasMap(json_list):
+def portListToAliasMap(json_list, debug_=False):
     reverse_map = {}
-    if len(json_list) < 1:
+    if (json_list is None) or (len(json_list) < 1):
+        if debug_:
+            print("portListToAliasMap: no json_list provided")
+            raise ValueError("portListToAliasMap: no json_list provided")
         return reverse_map
 
     json_interfaces = json_list