Merge pull request #18083 from taosdata/fix/TD-20052

enh: adjust sync append entry msg

source/libs/sync/inc/syncAppendEntries.h

@@ -88,7 +88,7 @@ extern "C" {
 //       /\ UNCHANGED <<candidateVars, leaderVars>>
 //
 
-int32_t syncNodeOnAppendEntries(SSyncNode* ths, SyncAppendEntries* pMsg);
+int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pMsg);
 
 #ifdef __cplusplus
 }

source/libs/sync/inc/syncInt.h

@@ -324,9 +324,6 @@ int32_t syncNodePeerStateInit(SSyncNode* pSyncNode);
 void syncLogRecvTimer(SSyncNode* pSyncNode, const SyncTimeout* pMsg, const char* s);
 void syncLogRecvLocalCmd(SSyncNode* pSyncNode, const SyncLocalCmd* pMsg, const char* s);
 
-void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s);
-void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s);
-
 void syncLogSendAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s);
 void syncLogRecvAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s);
 

source/libs/sync/inc/syncMessage.h

@@ -97,24 +97,6 @@ typedef struct SyncAppendEntries {
   char      data[];
 } SyncAppendEntries;
 
-SyncAppendEntries* syncAppendEntriesBuild(uint32_t dataLen, int32_t vgId);
-void               syncAppendEntriesDestroy(SyncAppendEntries* pMsg);
-void               syncAppendEntriesSerialize(const SyncAppendEntries* pMsg, char* buf, uint32_t bufLen);
-void               syncAppendEntriesDeserialize(const char* buf, uint32_t len, SyncAppendEntries* pMsg);
-char*              syncAppendEntriesSerialize2(const SyncAppendEntries* pMsg, uint32_t* len);
-SyncAppendEntries* syncAppendEntriesDeserialize2(const char* buf, uint32_t len);
-void               syncAppendEntries2RpcMsg(const SyncAppendEntries* pMsg, SRpcMsg* pRpcMsg);
-void               syncAppendEntriesFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntries* pMsg);
-SyncAppendEntries* syncAppendEntriesFromRpcMsg2(const SRpcMsg* pRpcMsg);
-cJSON*             syncAppendEntries2Json(const SyncAppendEntries* pMsg);
-char*              syncAppendEntries2Str(const SyncAppendEntries* pMsg);
-
-// for debug ----------------------
-void syncAppendEntriesPrint(const SyncAppendEntries* pMsg);
-void syncAppendEntriesPrint2(char* s, const SyncAppendEntries* pMsg);
-void syncAppendEntriesLog(const SyncAppendEntries* pMsg);
-void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg);
-
 typedef struct SyncAppendEntriesReply {
   uint32_t bytes;
   int32_t  vgId;
@@ -446,9 +428,8 @@ void syncLocalCmdLog2(char* s, const SyncLocalCmd* pMsg);
 
 // on message ----------------------
 int32_t syncNodeOnRequestVote(SSyncNode* pNode, const SRpcMsg* pMsg);
-int32_t syncNodeOnRequestVoteReply(SSyncNode* ths, const SRpcMsg* pMsg);
-
-int32_t syncNodeOnAppendEntries(SSyncNode* ths, SyncAppendEntries* pMsg);
+int32_t syncNodeOnRequestVoteReply(SSyncNode* pNode, const SRpcMsg* pMsg);
+int32_t syncNodeOnAppendEntries(SSyncNode* pNode, const SRpcMsg* pMsg);
 int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, SyncAppendEntriesReply* pMsg);
 
 int32_t syncNodeOnPreSnapshot(SSyncNode* ths, SyncPreSnapshot* pMsg);
@@ -478,6 +459,7 @@ int32_t syncClientRequestBuildFromRpcMsg(SRpcMsg* pClientRequestRpcMsg, const SR
 int32_t syncClientRequestBuildFromNoopEntry(SRpcMsg* pClientRequestRpcMsg, const SSyncRaftEntry* pEntry, int32_t vgId);
 int32_t syncBuildRequestVote(SRpcMsg* pMsg, int32_t vgId);
 int32_t syncBuildRequestVoteReply(SRpcMsg* pMsg, int32_t vgId);
+int32_t syncBuildAppendEntries(SRpcMsg* pMsg, int32_t dataLen, int32_t vgId);
 
 #ifdef __cplusplus
 }

source/libs/sync/inc/syncReplication.h

@@ -53,9 +53,6 @@ int32_t syncNodeSendHeartbeat(SSyncNode* pSyncNode, const SRaftId* pDestId, cons
 int32_t syncNodeReplicate(SSyncNode* pSyncNode);
 int32_t syncNodeReplicateOne(SSyncNode* pSyncNode, SRaftId* pDestId);
 
-int32_t syncNodeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* pDestId, const SyncAppendEntries* pMsg);
-int32_t syncNodeMaybeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* pDestId, const SyncAppendEntries* pMsg);
-
 #ifdef __cplusplus
 }
 #endif

source/libs/sync/src/syncAppendEntries.c

@@ -18,6 +18,7 @@
 #include "syncMessage.h"
 #include "syncRaftLog.h"
 #include "syncRaftStore.h"
+#include "syncUtil.h"
 
 // TLA+ Spec
 // HandleAppendEntriesRequest(i, j, m) ==
@@ -123,7 +124,21 @@ int32_t syncNodeFollowerCommit(SSyncNode* ths, SyncIndex newCommitIndex) {
   return 0;
 }
 
-int32_t syncNodeOnAppendEntries(SSyncNode* ths, SyncAppendEntries* pMsg) {
+void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
+  char     host[64];
+  uint16_t port;
+  syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
+
+  sNTrace(pSyncNode,
+          "recv sync-append-entries from %s:%d {term:%" PRId64 ", pre-index:%" PRId64 ", pre-term:%" PRId64
+          ", cmt:%" PRId64 ", pterm:%" PRId64 ", datalen:%d}, %s",
+          host, port, pMsg->term, pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->commitIndex, pMsg->privateTerm,
+          pMsg->dataLen, s);
+}
+
+int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
+  SyncAppendEntries* pMsg = pRpcMsg->pCont;
+
   // if already drop replica, do not process
   if (!syncNodeInRaftGroup(ths, &(pMsg->srcId))) {
     syncLogRecvAppendEntries(ths, pMsg, "not in my config");

source/libs/sync/src/syncMain.c

@@ -150,9 +150,7 @@ int32_t syncProcessMsg(int64_t rid, SRpcMsg* pMsg) {
   } else if (pMsg->msgType == TDMT_SYNC_REQUEST_VOTE_REPLY) {
     code = syncNodeOnRequestVoteReply(pSyncNode, pMsg);
   } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES) {
-    SyncAppendEntries* pSyncMsg = syncAppendEntriesFromRpcMsg2(pMsg);
-    code = syncNodeOnAppendEntries(pSyncNode, pSyncMsg);
-    syncAppendEntriesDestroy(pSyncMsg);
+    syncNodeOnAppendEntries(pSyncNode, pMsg);
   } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
     SyncAppendEntriesReply* pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pMsg);
     code = syncNodeOnAppendEntriesReply(pSyncNode, pSyncMsg);
@@ -2533,29 +2531,6 @@ void syncLogRecvTimer(SSyncNode* pSyncNode, const SyncTimeout* pMsg, const char*
           syncTimerTypeStr(pMsg->timeoutType), pMsg->logicClock, pMsg->timerMS, pMsg->data, s);
 }
 
-void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
-  char     host[64];
-  uint16_t port;
-  syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
-  sNTrace(pSyncNode,
-          "send sync-append-entries to %s:%d, {term:%" PRId64 ", pre-index:%" PRId64 ", pre-term:%" PRId64
-          ", pterm:%" PRId64 ", cmt:%" PRId64 ", datalen:%d}, %s",
-          host, port, pMsg->term, pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->privateTerm, pMsg->commitIndex,
-          pMsg->dataLen, s);
-}
-
-void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
-  char     host[64];
-  uint16_t port;
-  syncUtilU642Addr(pMsg->srcId.addr, host, sizeof(host), &port);
-
-  sNTrace(pSyncNode,
-          "recv sync-append-entries from %s:%d {term:%" PRId64 ", pre-index:%" PRId64 ", pre-term:%" PRId64
-          ", cmt:%" PRId64 ", pterm:%" PRId64 ", datalen:%d}, %s",
-          host, port, pMsg->term, pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->commitIndex, pMsg->privateTerm,
-          pMsg->dataLen, s);
-}
-
 void syncLogSendAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s) {
   char     host[64];
   uint16_t port;

source/libs/sync/src/syncMessage.c

@@ -63,7 +63,6 @@ int32_t syncClientRequestBuildFromRpcMsg(SRpcMsg* pClientRequestRpcMsg, const SR
   pClientRequest->dataLen = pOriginalRpcMsg->contLen;
   memcpy(pClientRequest->data, (char*)pOriginalRpcMsg->pCont, pOriginalRpcMsg->contLen);
 
-
   return 0;
 }
 
@@ -122,175 +121,22 @@ int32_t syncBuildRequestVoteReply(SRpcMsg* pMsg, int32_t vgId) {
   return 0;
 }
 
-// ---- message process SyncAppendEntries----
-SyncAppendEntries* syncAppendEntriesBuild(uint32_t dataLen, int32_t vgId) {
-  uint32_t           bytes = sizeof(SyncAppendEntries) + dataLen;
-  SyncAppendEntries* pMsg = taosMemoryMalloc(bytes);
-  memset(pMsg, 0, bytes);
-  pMsg->bytes = bytes;
-  pMsg->vgId = vgId;
+int32_t syncBuildAppendEntries(SRpcMsg* pMsg, int32_t dataLen, int32_t vgId) {
+  int32_t bytes = sizeof(SyncAppendEntries) + dataLen;
+  pMsg->pCont = rpcMallocCont(bytes);
   pMsg->msgType = TDMT_SYNC_APPEND_ENTRIES;
-  pMsg->dataLen = dataLen;
-  return pMsg;
-}
-
-void syncAppendEntriesDestroy(SyncAppendEntries* pMsg) {
-  if (pMsg != NULL) {
-    taosMemoryFree(pMsg);
-  }
-}
-
-void syncAppendEntriesSerialize(const SyncAppendEntries* pMsg, char* buf, uint32_t bufLen) {
-  ASSERT(pMsg->bytes <= bufLen);
-  memcpy(buf, pMsg, pMsg->bytes);
-}
-
-void syncAppendEntriesDeserialize(const char* buf, uint32_t len, SyncAppendEntries* pMsg) {
-  memcpy(pMsg, buf, len);
-  ASSERT(len == pMsg->bytes);
-  ASSERT(pMsg->bytes == sizeof(SyncAppendEntries) + pMsg->dataLen);
-}
-
-char* syncAppendEntriesSerialize2(const SyncAppendEntries* pMsg, uint32_t* len) {
-  char* buf = taosMemoryMalloc(pMsg->bytes);
-  ASSERT(buf != NULL);
-  syncAppendEntriesSerialize(pMsg, buf, pMsg->bytes);
-  if (len != NULL) {
-    *len = pMsg->bytes;
-  }
-  return buf;
-}
-
-SyncAppendEntries* syncAppendEntriesDeserialize2(const char* buf, uint32_t len) {
-  uint32_t           bytes = *((uint32_t*)buf);
-  SyncAppendEntries* pMsg = taosMemoryMalloc(bytes);
-  ASSERT(pMsg != NULL);
-  syncAppendEntriesDeserialize(buf, len, pMsg);
-  ASSERT(len == pMsg->bytes);
-  return pMsg;
-}
-
-void syncAppendEntries2RpcMsg(const SyncAppendEntries* pMsg, SRpcMsg* pRpcMsg) {
-  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
-  pRpcMsg->msgType = pMsg->msgType;
-  pRpcMsg->contLen = pMsg->bytes;
-  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
-  syncAppendEntriesSerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
-}
-
-void syncAppendEntriesFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntries* pMsg) {
-  syncAppendEntriesDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
-}
-
-SyncAppendEntries* syncAppendEntriesFromRpcMsg2(const SRpcMsg* pRpcMsg) {
-  SyncAppendEntries* pMsg = syncAppendEntriesDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
-  ASSERT(pMsg != NULL);
-  return pMsg;
-}
-
-cJSON* syncAppendEntries2Json(const SyncAppendEntries* 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);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
-    cJSON_AddStringToObject(pRoot, "term", u64buf);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
-    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->prevLogIndex);
-    cJSON_AddStringToObject(pRoot, "prevLogIndex", u64buf);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->prevLogTerm);
-    cJSON_AddStringToObject(pRoot, "pre_log_term", u64buf);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->commitIndex);
-    cJSON_AddStringToObject(pRoot, "commitIndex", u64buf);
-
-    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);
+  pMsg->contLen = bytes;
+  if (pMsg->pCont == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
   }
 
-  cJSON* pJson = cJSON_CreateObject();
-  cJSON_AddItemToObject(pJson, "SyncAppendEntries", pRoot);
-  return pJson;
-}
-
-char* syncAppendEntries2Str(const SyncAppendEntries* pMsg) {
-  cJSON* pJson = syncAppendEntries2Json(pMsg);
-  char*  serialized = cJSON_Print(pJson);
-  cJSON_Delete(pJson);
-  return serialized;
-}
-
-// for debug ----------------------
-void syncAppendEntriesPrint(const SyncAppendEntries* pMsg) {
-  char* serialized = syncAppendEntries2Str(pMsg);
-  printf("syncAppendEntriesPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesPrint2(char* s, const SyncAppendEntries* pMsg) {
-  char* serialized = syncAppendEntries2Str(pMsg);
-  printf("syncAppendEntriesPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesLog(const SyncAppendEntries* pMsg) {
-  char* serialized = syncAppendEntries2Str(pMsg);
-  sTrace("syncAppendEntriesLog | len:%d | %s", (int32_t)strlen(serialized), serialized);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg) {
-  if (gRaftDetailLog) {
-    char* serialized = syncAppendEntries2Str(pMsg);
-    sTrace("syncAppendEntriesLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
-    taosMemoryFree(serialized);
-  }
+  SyncAppendEntries* pAppendEntries = pMsg->pCont;
+  pAppendEntries->bytes = bytes;
+  pAppendEntries->vgId = vgId;
+  pAppendEntries->msgType = TDMT_SYNC_APPEND_ENTRIES;
+  pAppendEntries->dataLen = dataLen;
+  return 0;
 }
 
 // ---- message process SyncAppendEntriesReply----

source/libs/sync/src/syncReplication.c

@@ -20,6 +20,9 @@
 #include "syncRaftStore.h"
 #include "syncUtil.h"
 
+static int32_t syncNodeSendAppendEntries(SSyncNode* pNode, const SRaftId* destRaftId, SRpcMsg* pRpcMsg);
+static int32_t syncNodeMaybeSendAppendEntries(SSyncNode* pNode, const SRaftId* destRaftId, SRpcMsg* pRpcMsg);
+
 // TLA+ Spec
 // AppendEntries(i, j) ==
 //    /\ i /= j
@@ -65,6 +68,7 @@ int32_t syncNodeReplicateOne(SSyncNode* pSyncNode, SRaftId* pDestId) {
   SyncTerm  preLogTerm = syncNodeGetPreTerm(pSyncNode, nextIndex);
 
   // prepare entry
+  SRpcMsg            rpcMsg = {0};
   SyncAppendEntries* pMsg = NULL;
 
   SSyncRaftEntry* pEntry;
@@ -73,26 +77,23 @@ int32_t syncNodeReplicateOne(SSyncNode* pSyncNode, SRaftId* pDestId) {
   if (code == 0) {
     ASSERT(pEntry != NULL);
 
-    pMsg = syncAppendEntriesBuild(pEntry->bytes, pSyncNode->vgId);
-    ASSERT(pMsg != NULL);
-    memcpy(pMsg->data, pEntry, pEntry->bytes);
-    syncEntryDestory(pEntry);
+    code = syncBuildAppendEntries(&rpcMsg, pEntry->bytes, pSyncNode->vgId);
+    ASSERT(code == 0);
 
+    pMsg = rpcMsg.pCont;
+    memcpy(pMsg->data, pEntry, pEntry->bytes);
   } else {
     if (terrno == TSDB_CODE_WAL_LOG_NOT_EXIST) {
       // no entry in log
-      pMsg = syncAppendEntriesBuild(0, pSyncNode->vgId);
-      ASSERT(pMsg != NULL);
+      code = syncBuildAppendEntries(&rpcMsg, 0, pSyncNode->vgId);
+      ASSERT(code == 0);
 
+      pMsg = rpcMsg.pCont;
     } else {
-      do {
-        char     host[64];
-        uint16_t port;
-        syncUtilU642Addr(pDestId->addr, host, sizeof(host), &port);
-        sNError(pSyncNode, "replicate to %s:%d error, next-index:%" PRId64, host, port, nextIndex);
-      } while (0);
-
-      syncAppendEntriesDestroy(pMsg);
+      char     host[64];
+      uint16_t port;
+      syncUtilU642Addr(pDestId->addr, host, sizeof(host), &port);
+      sNError(pSyncNode, "replicate to %s:%d error, next-index:%" PRId64, host, port, nextIndex);
       return -1;
     }
   }
@@ -109,9 +110,7 @@ int32_t syncNodeReplicateOne(SSyncNode* pSyncNode, SRaftId* pDestId) {
   // pMsg->privateTerm = syncIndexMgrGetTerm(pSyncNode->pNextIndex, pDestId);
 
   // send msg
-  syncNodeMaybeSendAppendEntries(pSyncNode, pDestId, pMsg);
-  syncAppendEntriesDestroy(pMsg);
-
+  syncNodeMaybeSendAppendEntries(pSyncNode, pDestId, &rpcMsg);
   return 0;
 }
 
@@ -137,13 +136,23 @@ int32_t syncNodeReplicate(SSyncNode* pSyncNode) {
   return 0;
 }
 
-int32_t syncNodeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncAppendEntries* pMsg) {
-  int32_t ret = 0;
-  syncLogSendAppendEntries(pSyncNode, pMsg, "");
+static void syncLogSendAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMsg, const char* s) {
+  char     host[64];
+  uint16_t port;
+  syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
+  sNTrace(pSyncNode,
+          "send sync-append-entries to %s:%d, {term:%" PRId64 ", pre-index:%" PRId64 ", pre-term:%" PRId64
+          ", pterm:%" PRId64 ", cmt:%" PRId64 ", datalen:%d}, %s",
+          host, port, pMsg->term, pMsg->prevLogIndex, pMsg->prevLogTerm, pMsg->privateTerm, pMsg->commitIndex,
+          pMsg->dataLen, s);
+}
 
-  SRpcMsg rpcMsg;
-  syncAppendEntries2RpcMsg(pMsg, &rpcMsg);
-  syncNodeSendMsgById(destRaftId, pSyncNode, &rpcMsg);
+int32_t syncNodeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftId, SRpcMsg* pRpcMsg) {
+  int32_t            ret = 0;
+  SyncAppendEntries* pMsg = pRpcMsg->pCont;
+
+  syncLogSendAppendEntries(pSyncNode, pMsg, "");
+  syncNodeSendMsgById(destRaftId, pSyncNode, pRpcMsg);
 
   SPeerState* pState = syncNodeGetPeerState(pSyncNode, destRaftId);
   if (pState == NULL) {
@@ -159,32 +168,24 @@ int32_t syncNodeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftI
   return ret;
 }
 
-int32_t syncNodeMaybeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncAppendEntries* pMsg) {
-  int32_t ret = 0;
-  if (syncNodeNeedSendAppendEntries(pSyncNode, destRaftId, pMsg)) {
-    ret = syncNodeSendAppendEntries(pSyncNode, destRaftId, pMsg);
+int32_t syncNodeMaybeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftId, SRpcMsg* pRpcMsg) {
+  int32_t            ret = 0;
+  SyncAppendEntries* pMsg = pRpcMsg->pCont;
 
+  if (syncNodeNeedSendAppendEntries(pSyncNode, destRaftId, pMsg)) {
+    ret = syncNodeSendAppendEntries(pSyncNode, destRaftId, pRpcMsg);
   } else {
     char    logBuf[128];
     char    host[64];
     int16_t port;
     syncUtilU642Addr(destRaftId->addr, host, sizeof(host), &port);
     sNTrace(pSyncNode, "do not repcate to %s:%d for index:%" PRId64, host, port, pMsg->prevLogIndex + 1);
+    rpcFreeCont(pRpcMsg->pCont);
   }
 
   return ret;
 }
 
-int32_t syncNodeAppendEntries(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncAppendEntries* pMsg) {
-  int32_t ret = 0;
-  syncLogSendAppendEntries(pSyncNode, pMsg, "");
-
-  SRpcMsg rpcMsg;
-  syncAppendEntries2RpcMsg(pMsg, &rpcMsg);
-  syncNodeSendMsgById(destRaftId, pSyncNode, &rpcMsg);
-  return ret;
-}
-
 int32_t syncNodeSendHeartbeat(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncHeartbeat* pMsg) {
   int32_t ret = 0;
   syncLogSendHeartbeat(pSyncNode, pMsg, "");

source/libs/sync/test/sync_test_lib/inc/syncTest.h

@@ -277,6 +277,24 @@ void syncRequestVoteReplyPrint2(char* s, const SyncRequestVoteReply* pMsg);
 void syncRequestVoteReplyLog(const SyncRequestVoteReply* pMsg);
 void syncRequestVoteReplyLog2(char* s, const SyncRequestVoteReply* pMsg);
 
+SyncAppendEntries* syncAppendEntriesBuild(uint32_t dataLen, int32_t vgId);
+void               syncAppendEntriesDestroy(SyncAppendEntries* pMsg);
+void               syncAppendEntriesSerialize(const SyncAppendEntries* pMsg, char* buf, uint32_t bufLen);
+void               syncAppendEntriesDeserialize(const char* buf, uint32_t len, SyncAppendEntries* pMsg);
+char*              syncAppendEntriesSerialize2(const SyncAppendEntries* pMsg, uint32_t* len);
+SyncAppendEntries* syncAppendEntriesDeserialize2(const char* buf, uint32_t len);
+void               syncAppendEntries2RpcMsg(const SyncAppendEntries* pMsg, SRpcMsg* pRpcMsg);
+void               syncAppendEntriesFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntries* pMsg);
+SyncAppendEntries* syncAppendEntriesFromRpcMsg2(const SRpcMsg* pRpcMsg);
+cJSON*             syncAppendEntries2Json(const SyncAppendEntries* pMsg);
+char*              syncAppendEntries2Str(const SyncAppendEntries* pMsg);
+
+// for debug ----------------------
+void syncAppendEntriesPrint(const SyncAppendEntries* pMsg);
+void syncAppendEntriesPrint2(char* s, const SyncAppendEntries* pMsg);
+void syncAppendEntriesLog(const SyncAppendEntries* pMsg);
+void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg);
+
 #ifdef __cplusplus
 }
 #endif

source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c

@@ -1307,4 +1307,175 @@ void syncRequestVoteReplyLog2(char* s, const SyncRequestVoteReply* pMsg) {
     sTrace("syncRequestVoteReplyLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
     taosMemoryFree(serialized);
   }
-}
+}
\ No newline at end of file
+
+// ---- message process SyncAppendEntries----
+SyncAppendEntries* syncAppendEntriesBuild(uint32_t dataLen, int32_t vgId) {
+  uint32_t           bytes = sizeof(SyncAppendEntries) + dataLen;
+  SyncAppendEntries* pMsg = taosMemoryMalloc(bytes);
+  memset(pMsg, 0, bytes);
+  pMsg->bytes = bytes;
+  pMsg->vgId = vgId;
+  pMsg->msgType = TDMT_SYNC_APPEND_ENTRIES;
+  pMsg->dataLen = dataLen;
+  return pMsg;
+}
+
+void syncAppendEntriesDestroy(SyncAppendEntries* pMsg) {
+  if (pMsg != NULL) {
+    taosMemoryFree(pMsg);
+  }
+}
+
+void syncAppendEntriesSerialize(const SyncAppendEntries* pMsg, char* buf, uint32_t bufLen) {
+  ASSERT(pMsg->bytes <= bufLen);
+  memcpy(buf, pMsg, pMsg->bytes);
+}
+
+void syncAppendEntriesDeserialize(const char* buf, uint32_t len, SyncAppendEntries* pMsg) {
+  memcpy(pMsg, buf, len);
+  ASSERT(len == pMsg->bytes);
+  ASSERT(pMsg->bytes == sizeof(SyncAppendEntries) + pMsg->dataLen);
+}
+
+char* syncAppendEntriesSerialize2(const SyncAppendEntries* pMsg, uint32_t* len) {
+  char* buf = taosMemoryMalloc(pMsg->bytes);
+  ASSERT(buf != NULL);
+  syncAppendEntriesSerialize(pMsg, buf, pMsg->bytes);
+  if (len != NULL) {
+    *len = pMsg->bytes;
+  }
+  return buf;
+}
+
+SyncAppendEntries* syncAppendEntriesDeserialize2(const char* buf, uint32_t len) {
+  uint32_t           bytes = *((uint32_t*)buf);
+  SyncAppendEntries* pMsg = taosMemoryMalloc(bytes);
+  ASSERT(pMsg != NULL);
+  syncAppendEntriesDeserialize(buf, len, pMsg);
+  ASSERT(len == pMsg->bytes);
+  return pMsg;
+}
+
+void syncAppendEntries2RpcMsg(const SyncAppendEntries* pMsg, SRpcMsg* pRpcMsg) {
+  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
+  pRpcMsg->msgType = pMsg->msgType;
+  pRpcMsg->contLen = pMsg->bytes;
+  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
+  syncAppendEntriesSerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
+}
+
+void syncAppendEntriesFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntries* pMsg) {
+  syncAppendEntriesDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
+}
+
+SyncAppendEntries* syncAppendEntriesFromRpcMsg2(const SRpcMsg* pRpcMsg) {
+  SyncAppendEntries* pMsg = syncAppendEntriesDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
+  ASSERT(pMsg != NULL);
+  return pMsg;
+}
+
+cJSON* syncAppendEntries2Json(const SyncAppendEntries* 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);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
+    cJSON_AddStringToObject(pRoot, "term", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
+    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->prevLogIndex);
+    cJSON_AddStringToObject(pRoot, "prevLogIndex", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->prevLogTerm);
+    cJSON_AddStringToObject(pRoot, "pre_log_term", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->commitIndex);
+    cJSON_AddStringToObject(pRoot, "commitIndex", u64buf);
+
+    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, "SyncAppendEntries", pRoot);
+  return pJson;
+}
+
+char* syncAppendEntries2Str(const SyncAppendEntries* pMsg) {
+  cJSON* pJson = syncAppendEntries2Json(pMsg);
+  char*  serialized = cJSON_Print(pJson);
+  cJSON_Delete(pJson);
+  return serialized;
+}
+
+// for debug ----------------------
+void syncAppendEntriesPrint(const SyncAppendEntries* pMsg) {
+  char* serialized = syncAppendEntries2Str(pMsg);
+  printf("syncAppendEntriesPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesPrint2(char* s, const SyncAppendEntries* pMsg) {
+  char* serialized = syncAppendEntries2Str(pMsg);
+  printf("syncAppendEntriesPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesLog(const SyncAppendEntries* pMsg) {
+  char* serialized = syncAppendEntries2Str(pMsg);
+  sTrace("syncAppendEntriesLog | len:%d | %s", (int32_t)strlen(serialized), serialized);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg) {
+  if (gRaftDetailLog) {
+    char* serialized = syncAppendEntries2Str(pMsg);
+    sTrace("syncAppendEntriesLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
+    taosMemoryFree(serialized);
+  }
+}