diff --git a/source/libs/sync/inc/syncSnapshot.h b/source/libs/sync/inc/syncSnapshot.h
index fd2119ce659b553124aa9a310c3790b29363628c..104da4861646b8b8287b854eeab0f2264f36c2bb 100644
--- a/source/libs/sync/inc/syncSnapshot.h
+++ b/source/libs/sync/inc/syncSnapshot.h
@@ -26,8 +26,29 @@ extern "C" {
 #include "syncInt.h"
 #include "taosdef.h"
 
-int32_t takeSnapshot(SSyncFSM *pFsm, SSnapshot *pSnapshot);
-int32_t restoreSnapshot(SSyncFSM *pFsm, SSnapshot *pSnapshot);
+typedef struct SSyncSnapshotSender {
+  bool       isStart;
+  int32_t    progressIndex;
+  void *     pCurrentBlock;
+  int32_t    len;
+  SSnapshot *pSnapshot;
+} SSyncSnapshotSender;
+
+int32_t snapshotSenderStart(SSyncSnapshotSender *pSender);
+int32_t snapshotSenderStop(SSyncSnapshotSender *pSender);
+int32_t snapshotSend(SSyncSnapshotSender *pSender);
+
+typedef struct SSyncSnapshotReceiver {
+  bool       isStart;
+  int32_t    progressIndex;
+  void *     pCurrentBlock;
+  int32_t    len;
+  SSnapshot *pSnapshot;
+} SSyncSnapshotReceiver;
+
+int32_t snapshotReceiverStart(SSyncSnapshotReceiver *pReceiver);
+int32_t snapshotReceiverStop(SSyncSnapshotReceiver *pReceiver);
+int32_t snapshotReceive(SSyncSnapshotReceiver *pReceiver);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/src/syncSnapshot.c b/source/libs/sync/src/syncSnapshot.c
index 42b2bd993b515789934268f4400fece4f040f7c5..5419adee2cd33fabe02bf275ec6e5dd0248956b9 100644
--- a/source/libs/sync/src/syncSnapshot.c
+++ b/source/libs/sync/src/syncSnapshot.c
@@ -15,6 +15,14 @@
 
 #include "syncSnapshot.h"
 
-int32_t takeSnapshot(SSyncFSM *pFsm, SSnapshot *pSnapshot) { return 0; }
+int32_t snapshotSenderStart(SSyncSnapshotSender *pSender) { return 0; }
 
-int32_t restoreSnapshot(SSyncFSM *pFsm, SSnapshot *pSnapshot) { return 0; }
\ No newline at end of file
+int32_t snapshotSenderStop(SSyncSnapshotSender *pSender) { return 0; }
+
+int32_t snapshotSend(SSyncSnapshotSender *pSender) { return 0; }
+
+int32_t snapshotReceiverStart(SSyncSnapshotReceiver *pReceiver) { return 0; }
+
+int32_t snapshotReceiverStop(SSyncSnapshotReceiver *pReceiver) { return 0; }
+
+int32_t snapshotReceive(SSyncSnapshotReceiver *pReceiver) { return 0; }