diff --git a/source/libs/sync/inc/syncMessage.h b/source/libs/sync/inc/syncMessage.h
index 77dfdf282d09382feeedc14c09e10116c5bb604f..7dc04d0b86c8908e471cef89d120a5761662ae65 100644
--- a/source/libs/sync/inc/syncMessage.h
+++ b/source/libs/sync/inc/syncMessage.h
@@ -34,27 +34,12 @@ typedef struct SyncPing {
   char     data[];
 } SyncPing;
 
-SyncPing* syncPingBuild(uint32_t dataLen);
-SyncPing* syncPingBuild2(const SRaftId* srcId, const SRaftId* destId, int32_t vgId, const char* str);
-SyncPing* syncPingBuild3(const SRaftId* srcId, const SRaftId* destId, int32_t vgId);
+
 void      syncPingDestroy(SyncPing* pMsg);
 void      syncPingSerialize(const SyncPing* pMsg, char* buf, uint32_t bufLen);
 void      syncPingDeserialize(const char* buf, uint32_t len, SyncPing* pMsg);
-char*     syncPingSerialize2(const SyncPing* pMsg, uint32_t* len);
 SyncPing* syncPingDeserialize2(const char* buf, uint32_t len);
-int32_t   syncPingSerialize3(const SyncPing* pMsg, char* buf, int32_t bufLen);
-SyncPing* syncPingDeserialize3(void* buf, int32_t bufLen);
-void      syncPing2RpcMsg(const SyncPing* pMsg, SRpcMsg* pRpcMsg);
-void      syncPingFromRpcMsg(const SRpcMsg* pRpcMsg, SyncPing* pMsg);
 SyncPing* syncPingFromRpcMsg2(const SRpcMsg* pRpcMsg);
-cJSON*    syncPing2Json(const SyncPing* pMsg);
-char*     syncPing2Str(const SyncPing* pMsg);
-
-// for debug ----------------------
-void syncPingPrint(const SyncPing* pMsg);
-void syncPingPrint2(char* s, const SyncPing* pMsg);
-void syncPingLog(const SyncPing* pMsg);
-void syncPingLog2(char* s, const SyncPing* pMsg);
 
 // ---------------------------------------------
 typedef struct SyncPingReply {
diff --git a/source/libs/sync/src/syncMessage.c b/source/libs/sync/src/syncMessage.c
index e3434aba734747fb8301572a5f6f8f459eff7277..565b21eb555876cbab0d3f8353695298a887e1be 100644
--- a/source/libs/sync/src/syncMessage.c
+++ b/source/libs/sync/src/syncMessage.c
@@ -151,31 +151,6 @@ void syncTimeoutLog2(char* s, const SyncTimeout* pMsg) {
   }
 }
 
-// ---- message process SyncPing----
-SyncPing* syncPingBuild(uint32_t dataLen) {
-  uint32_t  bytes = sizeof(SyncPing) + dataLen;
-  SyncPing* pMsg = taosMemoryMalloc(bytes);
-  memset(pMsg, 0, bytes);
-  pMsg->bytes = bytes;
-  pMsg->msgType = TDMT_SYNC_PING;
-  pMsg->dataLen = dataLen;
-  return pMsg;
-}
-
-SyncPing* syncPingBuild2(const SRaftId* srcId, const SRaftId* destId, int32_t vgId, const char* str) {
-  uint32_t  dataLen = strlen(str) + 1;
-  SyncPing* pMsg = syncPingBuild(dataLen);
-  pMsg->vgId = vgId;
-  pMsg->srcId = *srcId;
-  pMsg->destId = *destId;
-  snprintf(pMsg->data, pMsg->dataLen, "%s", str);
-  return pMsg;
-}
-
-SyncPing* syncPingBuild3(const SRaftId* srcId, const SRaftId* destId, int32_t vgId) {
-  SyncPing* pMsg = syncPingBuild2(srcId, destId, vgId, "ping");
-  return pMsg;
-}
 
 void syncPingDestroy(SyncPing* pMsg) {
   if (pMsg != NULL) {
@@ -194,16 +169,6 @@ void syncPingDeserialize(const char* buf, uint32_t len, SyncPing* pMsg) {
   ASSERT(pMsg->bytes == sizeof(SyncPing) + pMsg->dataLen);
 }
 
-char* syncPingSerialize2(const SyncPing* pMsg, uint32_t* len) {
-  char* buf = taosMemoryMalloc(pMsg->bytes);
-  ASSERT(buf != NULL);
-  syncPingSerialize(pMsg, buf, pMsg->bytes);
-  if (len != NULL) {
-    *len = pMsg->bytes;
-  }
-  return buf;
-}
-
 SyncPing* syncPingDeserialize2(const char* buf, uint32_t len) {
   uint32_t  bytes = *((uint32_t*)buf);
   SyncPing* pMsg = taosMemoryMalloc(bytes);
@@ -213,117 +178,6 @@ SyncPing* syncPingDeserialize2(const char* buf, uint32_t len) {
   return pMsg;
 }
 
-int32_t syncPingSerialize3(const SyncPing* pMsg, char* buf, int32_t bufLen) {
-  SEncoder encoder = {0};
-  tEncoderInit(&encoder, buf, bufLen);
-  if (tStartEncode(&encoder) < 0) {
-    return -1;
-  }
-
-  if (tEncodeU32(&encoder, pMsg->bytes) < 0) {
-    return -1;
-  }
-  if (tEncodeI32(&encoder, pMsg->vgId) < 0) {
-    return -1;
-  }
-  if (tEncodeU32(&encoder, pMsg->msgType) < 0) {
-    return -1;
-  }
-  if (tEncodeU64(&encoder, pMsg->srcId.addr) < 0) {
-    return -1;
-  }
-  if (tEncodeI32(&encoder, pMsg->srcId.vgId) < 0) {
-    return -1;
-  }
-  if (tEncodeU64(&encoder, pMsg->destId.addr) < 0) {
-    return -1;
-  }
-  if (tEncodeI32(&encoder, pMsg->destId.vgId) < 0) {
-    return -1;
-  }
-  if (tEncodeU32(&encoder, pMsg->dataLen) < 0) {
-    return -1;
-  }
-  if (tEncodeBinary(&encoder, pMsg->data, pMsg->dataLen)) {
-    return -1;
-  }
-
-  tEndEncode(&encoder);
-  int32_t tlen = encoder.pos;
-  tEncoderClear(&encoder);
-  return tlen;
-}
-
-SyncPing* syncPingDeserialize3(void* buf, int32_t bufLen) {
-  SDecoder decoder = {0};
-  tDecoderInit(&decoder, buf, bufLen);
-  if (tStartDecode(&decoder) < 0) {
-    return NULL;
-  }
-
-  SyncPing* pMsg = NULL;
-  uint32_t  bytes;
-  if (tDecodeU32(&decoder, &bytes) < 0) {
-    return NULL;
-  }
-
-  pMsg = taosMemoryMalloc(bytes);
-  ASSERT(pMsg != NULL);
-  pMsg->bytes = bytes;
-
-  if (tDecodeI32(&decoder, &pMsg->vgId) < 0) {
-    taosMemoryFree(pMsg);
-    return NULL;
-  }
-  if (tDecodeU32(&decoder, &pMsg->msgType) < 0) {
-    taosMemoryFree(pMsg);
-    return NULL;
-  }
-  if (tDecodeU64(&decoder, &pMsg->srcId.addr) < 0) {
-    taosMemoryFree(pMsg);
-    return NULL;
-  }
-  if (tDecodeI32(&decoder, &pMsg->srcId.vgId) < 0) {
-    taosMemoryFree(pMsg);
-    return NULL;
-  }
-  if (tDecodeU64(&decoder, &pMsg->destId.addr) < 0) {
-    taosMemoryFree(pMsg);
-    return NULL;
-  }
-  if (tDecodeI32(&decoder, &pMsg->destId.vgId) < 0) {
-    taosMemoryFree(pMsg);
-    return NULL;
-  }
-  if (tDecodeU32(&decoder, &pMsg->dataLen) < 0) {
-    taosMemoryFree(pMsg);
-    return NULL;
-  }
-  uint32_t len;
-  char*    data = NULL;
-  if (tDecodeBinary(&decoder, (uint8_t**)(&data), &len) < 0) {
-    taosMemoryFree(pMsg);
-    return NULL;
-  }
-  ASSERT(len == pMsg->dataLen);
-  memcpy(pMsg->data, data, len);
-
-  tEndDecode(&decoder);
-  tDecoderClear(&decoder);
-  return pMsg;
-}
-
-void syncPing2RpcMsg(const SyncPing* pMsg, SRpcMsg* pRpcMsg) {
-  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
-  pRpcMsg->msgType = pMsg->msgType;
-  pRpcMsg->contLen = pMsg->bytes;
-  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
-  syncPingSerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
-}
-
-void syncPingFromRpcMsg(const SRpcMsg* pRpcMsg, SyncPing* pMsg) {
-  syncPingDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
-}
 
 SyncPing* syncPingFromRpcMsg2(const SRpcMsg* pRpcMsg) {
   SyncPing* pMsg = syncPingDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
@@ -331,96 +185,6 @@ SyncPing* syncPingFromRpcMsg2(const SRpcMsg* pRpcMsg) {
   return pMsg;
 }
 
-cJSON* syncPing2Json(const SyncPing* pMsg) {
-  char   u64buf[128] = {0};
-  cJSON* pRoot = cJSON_CreateObject();
-
-  if (pMsg != NULL) {
-    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
-    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
-    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
-
-    cJSON* pSrcId = cJSON_CreateObject();
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
-    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
-    {
-      uint64_t u64 = pMsg->srcId.addr;
-      cJSON*   pTmp = pSrcId;
-      char     host[128] = {0};
-      uint16_t port;
-      syncUtilU642Addr(u64, host, sizeof(host), &port);
-      cJSON_AddStringToObject(pTmp, "addr_host", host);
-      cJSON_AddNumberToObject(pTmp, "addr_port", port);
-    }
-    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
-    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
-
-    cJSON* pDestId = cJSON_CreateObject();
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
-    cJSON_AddStringToObject(pDestId, "addr", u64buf);
-    {
-      uint64_t u64 = pMsg->destId.addr;
-      cJSON*   pTmp = pDestId;
-      char     host[128] = {0};
-      uint16_t port;
-      syncUtilU642Addr(u64, host, sizeof(host), &port);
-      cJSON_AddStringToObject(pTmp, "addr_host", host);
-      cJSON_AddNumberToObject(pTmp, "addr_port", port);
-    }
-    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
-    cJSON_AddItemToObject(pRoot, "destId", pDestId);
-
-    cJSON_AddNumberToObject(pRoot, "dataLen", pMsg->dataLen);
-    char* s;
-    s = syncUtilPrintBin((char*)(pMsg->data), pMsg->dataLen);
-    cJSON_AddStringToObject(pRoot, "data", s);
-    taosMemoryFree(s);
-    s = syncUtilPrintBin2((char*)(pMsg->data), pMsg->dataLen);
-    cJSON_AddStringToObject(pRoot, "data2", s);
-    taosMemoryFree(s);
-  }
-
-  cJSON* pJson = cJSON_CreateObject();
-  cJSON_AddItemToObject(pJson, "SyncPing", pRoot);
-  return pJson;
-}
-
-char* syncPing2Str(const SyncPing* pMsg) {
-  cJSON* pJson = syncPing2Json(pMsg);
-  char*  serialized = cJSON_Print(pJson);
-  cJSON_Delete(pJson);
-  return serialized;
-}
-
-// for debug ----------------------
-void syncPingPrint(const SyncPing* pMsg) {
-  char* serialized = syncPing2Str(pMsg);
-  printf("syncPingPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncPingPrint2(char* s, const SyncPing* pMsg) {
-  char* serialized = syncPing2Str(pMsg);
-  printf("syncPingPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncPingLog(const SyncPing* pMsg) {
-  char* serialized = syncPing2Str(pMsg);
-  sTrace("syncPingLog | len:%d | %s", (int32_t)strlen(serialized), serialized);
-  taosMemoryFree(serialized);
-}
-
-void syncPingLog2(char* s, const SyncPing* pMsg) {
-  if (gRaftDetailLog) {
-    char* serialized = syncPing2Str(pMsg);
-    sTrace("syncPingLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
-    taosMemoryFree(serialized);
-  }
-}
-
 // ---- message process SyncPingReply----
 SyncPingReply* syncPingReplyBuild(uint32_t dataLen) {
   uint32_t       bytes = sizeof(SyncPingReply) + dataLen;
diff --git a/source/libs/sync/test/sync_test_lib/inc/syncTest.h b/source/libs/sync/test/sync_test_lib/inc/syncTest.h
index ff4535ec875b6e7fcb37b4206eba4ba88787f2bb..93da2df5a20b8cda6c8eab60cb3566bcaef596af 100644
--- a/source/libs/sync/test/sync_test_lib/inc/syncTest.h
+++ b/source/libs/sync/test/sync_test_lib/inc/syncTest.h
@@ -125,6 +125,23 @@ void   syncRpcMsgPrint2(char* s, SRpcMsg* pMsg);
 void   syncRpcMsgLog(SRpcMsg* pMsg);
 void   syncRpcMsgLog2(char* s, SRpcMsg* pMsg);
 
+
+// origin syncMessage
+SyncPing* syncPingBuild(uint32_t dataLen);
+SyncPing* syncPingBuild2(const SRaftId* srcId, const SRaftId* destId, int32_t vgId, const char* str);
+SyncPing* syncPingBuild3(const SRaftId* srcId, const SRaftId* destId, int32_t vgId);
+char*     syncPingSerialize2(const SyncPing* pMsg, uint32_t* len);
+int32_t   syncPingSerialize3(const SyncPing* pMsg, char* buf, int32_t bufLen);
+SyncPing* syncPingDeserialize3(void* buf, int32_t bufLen);
+void      syncPing2RpcMsg(const SyncPing* pMsg, SRpcMsg* pRpcMsg);
+void      syncPingFromRpcMsg(const SRpcMsg* pRpcMsg, SyncPing* pMsg);
+cJSON*    syncPing2Json(const SyncPing* pMsg);
+char*     syncPing2Str(const SyncPing* pMsg);
+void      syncPingPrint(const SyncPing* pMsg);
+void      syncPingPrint2(char* s, const SyncPing* pMsg);
+void      syncPingLog(const SyncPing* pMsg);
+void      syncPingLog2(char* s, const SyncPing* pMsg);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c b/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
index 012382d69d3bcda0a4f6cd2c2daae6f9b7830a99..cdd2ae045d4b60c2480ba16101ad94861015e0a8 100644
--- a/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
+++ b/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
@@ -16,6 +16,244 @@
 #define _DEFAULT_SOURCE
 #include "syncTest.h"
 
+// ---- message process SyncPing----
+SyncPing* syncPingBuild(uint32_t dataLen) {
+  uint32_t  bytes = sizeof(SyncPing) + dataLen;
+  SyncPing* pMsg = taosMemoryMalloc(bytes);
+  memset(pMsg, 0, bytes);
+  pMsg->bytes = bytes;
+  pMsg->msgType = TDMT_SYNC_PING;
+  pMsg->dataLen = dataLen;
+  return pMsg;
+}
+
+SyncPing* syncPingBuild2(const SRaftId* srcId, const SRaftId* destId, int32_t vgId, const char* str) {
+  uint32_t  dataLen = strlen(str) + 1;
+  SyncPing* pMsg = syncPingBuild(dataLen);
+  pMsg->vgId = vgId;
+  pMsg->srcId = *srcId;
+  pMsg->destId = *destId;
+  snprintf(pMsg->data, pMsg->dataLen, "%s", str);
+  return pMsg;
+}
+
+SyncPing* syncPingBuild3(const SRaftId* srcId, const SRaftId* destId, int32_t vgId) {
+  SyncPing* pMsg = syncPingBuild2(srcId, destId, vgId, "ping");
+  return pMsg;
+}
+
+char* syncPingSerialize2(const SyncPing* pMsg, uint32_t* len) {
+  char* buf = taosMemoryMalloc(pMsg->bytes);
+  ASSERT(buf != NULL);
+  syncPingSerialize(pMsg, buf, pMsg->bytes);
+  if (len != NULL) {
+    *len = pMsg->bytes;
+  }
+  return buf;
+}
+
+void syncPing2RpcMsg(const SyncPing* pMsg, SRpcMsg* pRpcMsg) {
+  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
+  pRpcMsg->msgType = pMsg->msgType;
+  pRpcMsg->contLen = pMsg->bytes;
+  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
+  syncPingSerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
+}
+
+void syncPingFromRpcMsg(const SRpcMsg* pRpcMsg, SyncPing* pMsg) {
+  syncPingDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
+}
+
+SyncPing* syncPingDeserialize3(void* buf, int32_t bufLen) {
+  SDecoder decoder = {0};
+  tDecoderInit(&decoder, buf, bufLen);
+  if (tStartDecode(&decoder) < 0) {
+    return NULL;
+  }
+
+  SyncPing* pMsg = NULL;
+  uint32_t  bytes;
+  if (tDecodeU32(&decoder, &bytes) < 0) {
+    return NULL;
+  }
+
+  pMsg = taosMemoryMalloc(bytes);
+  ASSERT(pMsg != NULL);
+  pMsg->bytes = bytes;
+
+  if (tDecodeI32(&decoder, &pMsg->vgId) < 0) {
+    taosMemoryFree(pMsg);
+    return NULL;
+  }
+  if (tDecodeU32(&decoder, &pMsg->msgType) < 0) {
+    taosMemoryFree(pMsg);
+    return NULL;
+  }
+  if (tDecodeU64(&decoder, &pMsg->srcId.addr) < 0) {
+    taosMemoryFree(pMsg);
+    return NULL;
+  }
+  if (tDecodeI32(&decoder, &pMsg->srcId.vgId) < 0) {
+    taosMemoryFree(pMsg);
+    return NULL;
+  }
+  if (tDecodeU64(&decoder, &pMsg->destId.addr) < 0) {
+    taosMemoryFree(pMsg);
+    return NULL;
+  }
+  if (tDecodeI32(&decoder, &pMsg->destId.vgId) < 0) {
+    taosMemoryFree(pMsg);
+    return NULL;
+  }
+  if (tDecodeU32(&decoder, &pMsg->dataLen) < 0) {
+    taosMemoryFree(pMsg);
+    return NULL;
+  }
+  uint32_t len;
+  char*    data = NULL;
+  if (tDecodeBinary(&decoder, (uint8_t**)(&data), &len) < 0) {
+    taosMemoryFree(pMsg);
+    return NULL;
+  }
+  ASSERT(len == pMsg->dataLen);
+  memcpy(pMsg->data, data, len);
+
+  tEndDecode(&decoder);
+  tDecoderClear(&decoder);
+  return pMsg;
+}
+
+int32_t syncPingSerialize3(const SyncPing* pMsg, char* buf, int32_t bufLen) {
+  SEncoder encoder = {0};
+  tEncoderInit(&encoder, buf, bufLen);
+  if (tStartEncode(&encoder) < 0) {
+    return -1;
+  }
+
+  if (tEncodeU32(&encoder, pMsg->bytes) < 0) {
+    return -1;
+  }
+  if (tEncodeI32(&encoder, pMsg->vgId) < 0) {
+    return -1;
+  }
+  if (tEncodeU32(&encoder, pMsg->msgType) < 0) {
+    return -1;
+  }
+  if (tEncodeU64(&encoder, pMsg->srcId.addr) < 0) {
+    return -1;
+  }
+  if (tEncodeI32(&encoder, pMsg->srcId.vgId) < 0) {
+    return -1;
+  }
+  if (tEncodeU64(&encoder, pMsg->destId.addr) < 0) {
+    return -1;
+  }
+  if (tEncodeI32(&encoder, pMsg->destId.vgId) < 0) {
+    return -1;
+  }
+  if (tEncodeU32(&encoder, pMsg->dataLen) < 0) {
+    return -1;
+  }
+  if (tEncodeBinary(&encoder, pMsg->data, pMsg->dataLen)) {
+    return -1;
+  }
+
+  tEndEncode(&encoder);
+  int32_t tlen = encoder.pos;
+  tEncoderClear(&encoder);
+  return tlen;
+}
+
+cJSON* syncPing2Json(const SyncPing* pMsg) {
+  char   u64buf[128] = {0};
+  cJSON* pRoot = cJSON_CreateObject();
+
+  if (pMsg != NULL) {
+    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
+    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
+    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
+
+    cJSON* pSrcId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
+    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->srcId.addr;
+      cJSON*   pTmp = pSrcId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
+    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
+
+    cJSON* pDestId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
+    cJSON_AddStringToObject(pDestId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->destId.addr;
+      cJSON*   pTmp = pDestId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
+    cJSON_AddItemToObject(pRoot, "destId", pDestId);
+
+    cJSON_AddNumberToObject(pRoot, "dataLen", pMsg->dataLen);
+    char* s;
+    s = syncUtilPrintBin((char*)(pMsg->data), pMsg->dataLen);
+    cJSON_AddStringToObject(pRoot, "data", s);
+    taosMemoryFree(s);
+    s = syncUtilPrintBin2((char*)(pMsg->data), pMsg->dataLen);
+    cJSON_AddStringToObject(pRoot, "data2", s);
+    taosMemoryFree(s);
+  }
+
+  cJSON* pJson = cJSON_CreateObject();
+  cJSON_AddItemToObject(pJson, "SyncPing", pRoot);
+  return pJson;
+}
+
+char* syncPing2Str(const SyncPing* pMsg) {
+  cJSON* pJson = syncPing2Json(pMsg);
+  char*  serialized = cJSON_Print(pJson);
+  cJSON_Delete(pJson);
+  return serialized;
+}
+
+// for debug ----------------------
+void syncPingPrint(const SyncPing* pMsg) {
+  char* serialized = syncPing2Str(pMsg);
+  printf("syncPingPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncPingPrint2(char* s, const SyncPing* pMsg) {
+  char* serialized = syncPing2Str(pMsg);
+  printf("syncPingPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncPingLog(const SyncPing* pMsg) {
+  char* serialized = syncPing2Str(pMsg);
+  sTrace("syncPingLog | len:%d | %s", (int32_t)strlen(serialized), serialized);
+  taosMemoryFree(serialized);
+}
+
+void syncPingLog2(char* s, const SyncPing* pMsg) {
+  if (gRaftDetailLog) {
+    char* serialized = syncPing2Str(pMsg);
+    sTrace("syncPingLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
+    taosMemoryFree(serialized);
+  }
+}
+
 // ---------------------------------------------
 cJSON* syncRpcMsg2Json(SRpcMsg* pRpcMsg) {
   cJSON* pRoot;