From a701451a27d3a8ad42499a9d68e24bd4777d0c4c Mon Sep 17 00:00:00 2001
From: Minghao Li <castermode@gmail.com>
Date: Thu, 23 Jun 2022 11:09:01 +0800
Subject: [PATCH] refactor(sync): add trace log

---
 source/libs/sync/src/syncMain.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 4cd449de23..12f655ffb0 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -1455,6 +1455,17 @@ void syncNodeDoConfigChange(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncInde
     isAdd = false;
   }
 
+  // log begin config change
+  do {
+    char  eventLog[256];
+    char* pOldCfgStr = syncCfg2SimpleStr(&oldConfig);
+    char* pNewCfgStr = syncCfg2SimpleStr(pNewConfig);
+    snprintf(eventLog, sizeof(eventLog), "begin do config change, from %s to %s", pOldCfgStr, pNewCfgStr);
+    syncNodeEventLog(pSyncNode, eventLog);
+    taosMemoryFree(pOldCfgStr);
+    taosMemoryFree(pNewCfgStr);
+  } while (0);
+
   if (IamInNew) {
     pSyncNode->pRaftCfg->isStandBy = 0;  // change isStandBy to normal
   }
@@ -1613,6 +1624,17 @@ void syncNodeDoConfigChange(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncInde
   }
 
 _END:
+
+  // log end config change
+  do {
+    char  eventLog[256];
+    char* pOldCfgStr = syncCfg2SimpleStr(&oldConfig);
+    char* pNewCfgStr = syncCfg2SimpleStr(pNewConfig);
+    snprintf(eventLog, sizeof(eventLog), "end do config change, from %s to %s", pOldCfgStr, pNewCfgStr);
+    syncNodeEventLog(pSyncNode, eventLog);
+    taosMemoryFree(pOldCfgStr);
+    taosMemoryFree(pNewCfgStr);
+  } while (0);
   return;
 }
 
-- 
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