From de5cf746feba8323d734e8a3d279ab257db68463 Mon Sep 17 00:00:00 2001
From: Kefei Mo <kefei.mo@pnnl.gov>
Date: Fri, 20 Oct 2023 12:40:22 -0500
Subject: [PATCH 1/2] revivied Craig s code to resolved the issue that uuid has
 extra chars when using vctl status

---
 volttron/platform/control/control_utils.py | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/volttron/platform/control/control_utils.py b/volttron/platform/control/control_utils.py
index a4300e6603..c33034e2a2 100644
--- a/volttron/platform/control/control_utils.py
+++ b/volttron/platform/control/control_utils.py
@@ -36,11 +36,11 @@
 # under Contract DE-AC05-76RL01830
 # }}}
 import collections
-import itertools
 import sys
 import re
 from volttron.platform import jsonapi
 from volttron.platform.agent.utils import is_secure_mode
+import os
 
 _stdout = sys.stdout
 _stderr = sys.stderr
@@ -48,10 +48,13 @@
 
 def _calc_min_uuid_length(agents):
     n = 0
-    for agent1, agent2 in itertools.combinations(agents, 2):
-        common_len = sum(1 for a, b in zip(agent1.uuid, agent2.uuid) if a == b)
-        if common_len > n:
-            n = common_len
+    for agent1 in agents:
+        for agent2 in agents:
+            if agent1 is agent2:
+                continue
+            common_len = len(os.path.commonprefix([agent1.uuid, agent2.uuid]))
+            if common_len > n:
+                n = common_len
     return n + 1
 
 

From 8a513f0cae88c4ab6dc4044985188ec9b78cdb5f Mon Sep 17 00:00:00 2001
From: Kefei Mo <kefei.mo@pnnl.gov>
Date: Fri, 20 Oct 2023 13:14:30 -0500
Subject: [PATCH 2/2] optimized _calc_min_uuid_length(agents)

---
 volttron/platform/control/control_utils.py | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/volttron/platform/control/control_utils.py b/volttron/platform/control/control_utils.py
index c33034e2a2..8aad804fd7 100644
--- a/volttron/platform/control/control_utils.py
+++ b/volttron/platform/control/control_utils.py
@@ -47,15 +47,9 @@
 
 
 def _calc_min_uuid_length(agents):
-    n = 0
-    for agent1 in agents:
-        for agent2 in agents:
-            if agent1 is agent2:
-                continue
-            common_len = len(os.path.commonprefix([agent1.uuid, agent2.uuid]))
-            if common_len > n:
-                n = common_len
-    return n + 1
+    agent_ids = [agent.uuid for agent in agents]
+    common_len = len(os.path.commonprefix(agent_ids))
+    return common_len + 1
 
 
 def _list_agents(aip):