enh: refact syncMsg code

include/dnode/mnode/mnode.h

@@ -99,7 +99,6 @@ int32_t mndGetLoad(SMnode *pMnode, SMnodeLoad *pLoad);
  */
 int32_t mndProcessRpcMsg(SRpcMsg *pMsg);
 int32_t mndProcessSyncMsg(SRpcMsg *pMsg);
-int32_t mndProcessSyncCtrlMsg(SRpcMsg *pMsg);
 int32_t mndPreProcessQueryMsg(SRpcMsg *pMsg);
 void    mndPostProcessQueryMsg(SRpcMsg *pMsg);
 

include/libs/sync/sync.h

@@ -220,21 +220,13 @@ const char* syncStr(ESyncState state);
 bool        syncIsRestoreFinish(int64_t rid);
 int32_t     syncGetSnapshotByIndex(int64_t rid, SyncIndex index, SSnapshot* pSnapshot);
 
-int32_t syncReconfig(int64_t rid, SSyncCfg* pNewCfg);
-
-// build SRpcMsg, need to call syncPropose with SRpcMsg
-int32_t syncReconfigBuild(int64_t rid, const SSyncCfg* pNewCfg, SRpcMsg* pRpcMsg);
-
+int32_t syncReconfig(int64_t rid, SSyncCfg* pCfg);
 int32_t syncLeaderTransfer(int64_t rid);
-int32_t syncLeaderTransferTo(int64_t rid, SNodeInfo newLeader);
-
 int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex);
 int32_t syncEndSnapshot(int64_t rid);
-
 int32_t syncStepDown(int64_t rid, SyncTerm newTerm);
 
-SSyncNode* syncNodeAcquire(int64_t rid);
-void       syncNodeRelease(SSyncNode* pNode);
+int32_t syncProcessMsg(int64_t rid, SRpcMsg* pMsg);
 
 #ifdef __cplusplus
 }

source/dnode/mgmt/mgmt_mnode/src/mmWorker.c

@@ -67,24 +67,6 @@ static void mmProcessRpcMsg(SQueueInfo *pInfo, SRpcMsg *pMsg) {
   taosFreeQitem(pMsg);
 }
 
-static void mmProcessSyncCtrlMsg(SQueueInfo *pInfo, SRpcMsg *pMsg) {
-  SMnodeMgmt *pMgmt = pInfo->ahandle;
-  pMsg->info.node = pMgmt->pMnode;
-
-  const STraceId *trace = &pMsg->info.traceId;
-  dGTrace("msg:%p, get from mnode-sync-ctrl queue", pMsg);
-
-  SMsgHead *pHead = pMsg->pCont;
-  pHead->contLen = ntohl(pHead->contLen);
-  pHead->vgId = ntohl(pHead->vgId);
-
-  int32_t code = mndProcessSyncCtrlMsg(pMsg);
-
-  dGTrace("msg:%p, is freed, code:0x%x", pMsg, code);
-  rpcFreeCont(pMsg->pCont);
-  taosFreeQitem(pMsg);
-}
-
 static void mmProcessSyncMsg(SQueueInfo *pInfo, SRpcMsg *pMsg) {
   SMnodeMgmt *pMgmt = pInfo->ahandle;
   pMsg->info.node = pMgmt->pMnode;
@@ -252,7 +234,7 @@ int32_t mmStartWorker(SMnodeMgmt *pMgmt) {
       .min = 1,
       .max = 1,
       .name = "mnode-sync-ctrl",
-      .fp = (FItem)mmProcessSyncCtrlMsg,
+      .fp = (FItem)mmProcessSyncMsg,
       .param = pMgmt,
   };
   if (tSingleWorkerInit(&pMgmt->syncCtrlWorker, &scCfg) != 0) {

source/dnode/mgmt/mgmt_vnode/src/vmWorker.c

@@ -133,22 +133,6 @@ static void vmProcessSyncQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numOf
   }
 }
 
-static void vmProcessSyncCtrlQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
-  SVnodeObj *pVnode = pInfo->ahandle;
-  SRpcMsg   *pMsg = NULL;
-
-  for (int32_t i = 0; i < numOfMsgs; ++i) {
-    if (taosGetQitem(qall, (void **)&pMsg) == 0) continue;
-    const STraceId *trace = &pMsg->info.traceId;
-    dGTrace("vgId:%d, msg:%p get from vnode-sync queue", pVnode->vgId, pMsg);
-
-    int32_t code = vnodeProcessSyncCtrlMsg(pVnode->pImpl, pMsg, NULL);  // no response here
-    dGTrace("vgId:%d, msg:%p is freed, code:0x%x", pVnode->vgId, pMsg, code);
-    rpcFreeCont(pMsg->pCont);
-    taosFreeQitem(pMsg);
-  }
-}
-
 static int32_t vmPutMsgToQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg, EQueueType qtype) {
   const STraceId *trace = &pMsg->info.traceId;
   SMsgHead       *pHead = pMsg->pCont;
@@ -317,7 +301,7 @@ int32_t vmGetQueueSize(SVnodeMgmt *pMgmt, int32_t vgId, EQueueType qtype) {
 int32_t vmAllocQueue(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
   pVnode->pWriteQ = tWWorkerAllocQueue(&pMgmt->writePool, pVnode->pImpl, (FItems)vnodeProposeWriteMsg);
   pVnode->pSyncQ = tWWorkerAllocQueue(&pMgmt->syncPool, pVnode, (FItems)vmProcessSyncQueue);
-  pVnode->pSyncCtrlQ = tWWorkerAllocQueue(&pMgmt->syncCtrlPool, pVnode, (FItems)vmProcessSyncCtrlQueue);
+  pVnode->pSyncCtrlQ = tWWorkerAllocQueue(&pMgmt->syncCtrlPool, pVnode, (FItems)vmProcessSyncQueue);
   pVnode->pApplyQ = tWWorkerAllocQueue(&pMgmt->applyPool, pVnode->pImpl, (FItems)vnodeApplyWriteMsg);
   pVnode->pQueryQ = tQWorkerAllocQueue(&pMgmt->queryPool, pVnode, (FItem)vmProcessQueryQueue);
   pVnode->pStreamQ = tQWorkerAllocQueue(&pMgmt->streamPool, pVnode, (FItem)vmProcessStreamQueue);

source/dnode/mnode/impl/src/mndMain.c

@@ -474,128 +474,18 @@ void mndStop(SMnode *pMnode) {
   mndCleanupTimer(pMnode);
 }
 
-int32_t mndProcessSyncCtrlMsg(SRpcMsg *pMsg) {
-  SMnode    *pMnode = pMsg->info.node;
-  SSyncMgmt *pMgmt = &pMnode->syncMgmt;
-  int32_t    code = 0;
-
-  mInfo("vgId:%d, process sync ctrl msg", 1);
-
-  if (!syncIsInit()) {
-    mError("failed to process sync msg:%p type:%s since syncEnv stop", pMsg, TMSG_INFO(pMsg->msgType));
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-
-  SSyncNode *pSyncNode = syncNodeAcquire(pMgmt->sync);
-  if (pSyncNode == NULL) {
-    mError("failed to process sync msg:%p type:%s since syncNode is null", pMsg, TMSG_INFO(pMsg->msgType));
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-
-  if (pMsg->msgType == TDMT_SYNC_HEARTBEAT) {
-    SyncHeartbeat *pSyncMsg = syncHeartbeatFromRpcMsg2(pMsg);
-    code = syncNodeOnHeartbeat(pSyncNode, pSyncMsg);
-    syncHeartbeatDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_HEARTBEAT_REPLY) {
-    SyncHeartbeatReply *pSyncMsg = syncHeartbeatReplyFromRpcMsg2(pMsg);
-    code = syncNodeOnHeartbeatReply(pSyncNode, pSyncMsg);
-    syncHeartbeatReplyDestroy(pSyncMsg);
-  }
-
-  syncNodeRelease(pSyncNode);
-
-  if (code != 0) {
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-  }
-  return code;
-}
-
 int32_t mndProcessSyncMsg(SRpcMsg *pMsg) {
   SMnode    *pMnode = pMsg->info.node;
   SSyncMgmt *pMgmt = &pMnode->syncMgmt;
-  int32_t    code = 0;
-
-  if (!syncIsInit()) {
-    mError("failed to process sync msg:%p type:%s since syncEnv stop", pMsg, TMSG_INFO(pMsg->msgType));
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-
-  SSyncNode *pSyncNode = syncNodeAcquire(pMgmt->sync);
-  if (pSyncNode == NULL) {
-    mError("failed to process sync msg:%p type:%s since syncNode is null", pMsg, TMSG_INFO(pMsg->msgType));
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-
-  if (pMsg->msgType == TDMT_SYNC_TIMEOUT) {
-    SyncTimeout *pSyncMsg = syncTimeoutFromRpcMsg2(pMsg);
-    code = syncNodeOnTimer(pSyncNode, pSyncMsg);
-    syncTimeoutDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_PING) {
-    SyncPing *pSyncMsg = syncPingFromRpcMsg2(pMsg);
-    code = syncNodeOnPing(pSyncNode, pSyncMsg);
-    syncPingDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_PING_REPLY) {
-    SyncPingReply *pSyncMsg = syncPingReplyFromRpcMsg2(pMsg);
-    code = syncNodeOnPingReply(pSyncNode, pSyncMsg);
-    syncPingReplyDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_CLIENT_REQUEST) {
-    SyncClientRequest *pSyncMsg = syncClientRequestFromRpcMsg2(pMsg);
-    code = syncNodeOnClientRequest(pSyncNode, pSyncMsg, NULL);
-    syncClientRequestDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_REQUEST_VOTE) {
-    SyncRequestVote *pSyncMsg = syncRequestVoteFromRpcMsg2(pMsg);
-    code = syncNodeOnRequestVote(pSyncNode, pSyncMsg);
-    syncRequestVoteDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_REQUEST_VOTE_REPLY) {
-    SyncRequestVoteReply *pSyncMsg = syncRequestVoteReplyFromRpcMsg2(pMsg);
-    code = syncNodeOnRequestVoteReply(pSyncNode, pSyncMsg);
-    syncRequestVoteReplyDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES) {
-    SyncAppendEntries *pSyncMsg = syncAppendEntriesFromRpcMsg2(pMsg);
-    code = syncNodeOnAppendEntries(pSyncNode, pSyncMsg);
-    syncAppendEntriesDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
-    SyncAppendEntriesReply *pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pMsg);
-    code = syncNodeOnAppendEntriesReply(pSyncNode, pSyncMsg);
-    syncAppendEntriesReplyDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_SNAPSHOT_SEND) {
-    SyncSnapshotSend *pSyncMsg = syncSnapshotSendFromRpcMsg2(pMsg);
-    code = syncNodeOnSnapshot(pSyncNode, pSyncMsg);
-    syncSnapshotSendDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_SNAPSHOT_RSP) {
-    SyncSnapshotRsp *pSyncMsg = syncSnapshotRspFromRpcMsg2(pMsg);
-    code = syncNodeOnSnapshotReply(pSyncNode, pSyncMsg);
-    syncSnapshotRspDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_LOCAL_CMD) {
-    SyncLocalCmd *pSyncMsg = syncLocalCmdFromRpcMsg2(pMsg);
-    code = syncNodeOnLocalCmd(pSyncNode, pSyncMsg);
-    syncLocalCmdDestroy(pSyncMsg);
-
-  } else {
-    mError("failed to process msg:%p since invalid type:%s", pMsg, TMSG_INFO(pMsg->msgType));
-    code = -1;
-  }
 
-  syncNodeRelease(pSyncNode);
+  const STraceId *trace = &pMsg->info.traceId;
+  mGTrace("vgId:1, sync msg:%p will be processed, type:%s", pMsg, TMSG_INFO(pMsg->msgType));
 
+  int32_t code = syncProcessMsg(pMgmt->sync, pMsg);
   if (code != 0) {
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
+    mGError("vgId:1, failed to process sync msg:%p type:%s since %s", pMsg, TMSG_INFO(pMsg->msgType), terrstr());
   }
+
   return code;
 }
 

source/dnode/vnode/inc/vnode.h

@@ -83,7 +83,6 @@ int32_t vnodePreprocessQueryMsg(SVnode *pVnode, SRpcMsg *pMsg);
 
 int32_t vnodeProcessWriteMsg(SVnode *pVnode, SRpcMsg *pMsg, int64_t version, SRpcMsg *pRsp);
 int32_t vnodeProcessSyncMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
-int32_t vnodeProcessSyncCtrlMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
 int32_t vnodeProcessQueryMsg(SVnode *pVnode, SRpcMsg *pMsg);
 int32_t vnodeProcessFetchMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo);
 void    vnodeProposeWriteMsg(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs);

source/dnode/vnode/src/vnd/vnodeSync.c

@@ -230,142 +230,16 @@ void vnodeApplyWriteMsg(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
   }
 }
 
-int32_t vnodeProcessSyncCtrlMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
-  int32_t         code = 0;
-  const STraceId *trace = &pMsg->info.traceId;
-
-  if (!syncIsInit()) {
-    vGError("vgId:%d, msg:%p failed to process since sync env not start", pVnode->config.vgId, pMsg);
-    terrno = TSDB_CODE_APP_ERROR;
-    return -1;
-  }
-
-  SSyncNode *pSyncNode = syncNodeAcquire(pVnode->sync);
-  if (pSyncNode == NULL) {
-    vGError("vgId:%d, msg:%p failed to process since invalid sync node", pVnode->config.vgId, pMsg);
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-
-  vGTrace("vgId:%d, sync msg:%p will be processed, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
-
-  if (pMsg->msgType == TDMT_SYNC_HEARTBEAT) {
-    SyncHeartbeat *pSyncMsg = syncHeartbeatFromRpcMsg2(pMsg);
-    code = syncNodeOnHeartbeat(pSyncNode, pSyncMsg);
-    syncHeartbeatDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_HEARTBEAT_REPLY) {
-    SyncHeartbeatReply *pSyncMsg = syncHeartbeatReplyFromRpcMsg2(pMsg);
-    code = syncNodeOnHeartbeatReply(pSyncNode, pSyncMsg);
-    syncHeartbeatReplyDestroy(pSyncMsg);
-
-  } else {
-    vGError("vgId:%d, msg:%p failed to process since error msg type:%d", pVnode->config.vgId, pMsg, pMsg->msgType);
-    code = -1;
-  }
-
-  vTrace("vgId:%d, sync msg:%p is processed, type:%s code:0x%x", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType),
-         code);
-  syncNodeRelease(pSyncNode);
-  if (code != 0 && terrno == 0) {
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-  }
-  return code;
-}
-
 int32_t vnodeProcessSyncMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
-  int32_t         code = 0;
   const STraceId *trace = &pMsg->info.traceId;
-
-  if (!syncIsInit()) {
-    vGError("vgId:%d, msg:%p failed to process since sync env not start", pVnode->config.vgId, pMsg);
-    terrno = TSDB_CODE_APP_ERROR;
-    return -1;
-  }
-
-  SSyncNode *pSyncNode = syncNodeAcquire(pVnode->sync);
-  if (pSyncNode == NULL) {
-    vGError("vgId:%d, msg:%p failed to process since invalid sync node", pVnode->config.vgId, pMsg);
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-
   vGTrace("vgId:%d, sync msg:%p will be processed, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
 
-  if (pMsg->msgType == TDMT_SYNC_TIMEOUT) {
-    SyncTimeout *pSyncMsg = syncTimeoutFromRpcMsg2(pMsg);
-    ASSERT(pSyncMsg != NULL);
-    code = syncNodeOnTimer(pSyncNode, pSyncMsg);
-    syncTimeoutDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_PING) {
-    SyncPing *pSyncMsg = syncPingFromRpcMsg2(pMsg);
-    ASSERT(pSyncMsg != NULL);
-    code = syncNodeOnPing(pSyncNode, pSyncMsg);
-    syncPingDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_PING_REPLY) {
-    SyncPingReply *pSyncMsg = syncPingReplyFromRpcMsg2(pMsg);
-    ASSERT(pSyncMsg != NULL);
-    code = syncNodeOnPingReply(pSyncNode, pSyncMsg);
-    syncPingReplyDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_CLIENT_REQUEST) {
-    SyncClientRequest *pSyncMsg = syncClientRequestFromRpcMsg2(pMsg);
-    ASSERT(pSyncMsg != NULL);
-    code = syncNodeOnClientRequest(pSyncNode, pSyncMsg, NULL);
-    syncClientRequestDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_REQUEST_VOTE) {
-    SyncRequestVote *pSyncMsg = syncRequestVoteFromRpcMsg2(pMsg);
-    ASSERT(pSyncMsg != NULL);
-    code = syncNodeOnRequestVote(pSyncNode, pSyncMsg);
-    syncRequestVoteDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_REQUEST_VOTE_REPLY) {
-    SyncRequestVoteReply *pSyncMsg = syncRequestVoteReplyFromRpcMsg2(pMsg);
-    ASSERT(pSyncMsg != NULL);
-    code = syncNodeOnRequestVoteReply(pSyncNode, pSyncMsg);
-    syncRequestVoteReplyDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES) {
-    SyncAppendEntries *pSyncMsg = syncAppendEntriesFromRpcMsg2(pMsg);
-    ASSERT(pSyncMsg != NULL);
-    code = syncNodeOnAppendEntries(pSyncNode, pSyncMsg);
-    syncAppendEntriesDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
-    SyncAppendEntriesReply *pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pMsg);
-    ASSERT(pSyncMsg != NULL);
-    code = syncNodeOnAppendEntriesReply(pSyncNode, pSyncMsg);
-    syncAppendEntriesReplyDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_SNAPSHOT_SEND) {
-    SyncSnapshotSend *pSyncMsg = syncSnapshotSendFromRpcMsg2(pMsg);
-    code = syncNodeOnSnapshot(pSyncNode, pSyncMsg);
-    syncSnapshotSendDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_SNAPSHOT_RSP) {
-    SyncSnapshotRsp *pSyncMsg = syncSnapshotRspFromRpcMsg2(pMsg);
-    code = syncNodeOnSnapshotReply(pSyncNode, pSyncMsg);
-    syncSnapshotRspDestroy(pSyncMsg);
-
-  } else if (pMsg->msgType == TDMT_SYNC_LOCAL_CMD) {
-    SyncLocalCmd *pSyncMsg = syncLocalCmdFromRpcMsg2(pMsg);
-    code = syncNodeOnLocalCmd(pSyncNode, pSyncMsg);
-    syncLocalCmdDestroy(pSyncMsg);
-
-  } else {
-    vGError("vgId:%d, msg:%p failed to process since error msg type:%d", pVnode->config.vgId, pMsg, pMsg->msgType);
-    code = -1;
+  int32_t code = syncProcessMsg(pVnode->sync, pMsg);
+  if (code != 0) {
+    vGError("vgId:%d, failed to process sync msg:%p type:%s since %s", pVnode->config.vgId, pMsg,
+           TMSG_INFO(pMsg->msgType), terrstr());
   }
 
-  vTrace("vgId:%d, sync msg:%p is processed, type:%s code:0x%x", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType),
-         code);
-  syncNodeRelease(pSyncNode);
-  if (code != 0 && terrno == 0) {
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-  }
   return code;
 }
 

source/libs/sync/inc/syncInt.h

@@ -302,7 +302,6 @@ int32_t syncGetSnapshotMeta(int64_t rid, struct SSnapshotMeta* sMeta);
 int32_t syncGetSnapshotMetaByIndex(int64_t rid, SyncIndex snapshotIndex, struct SSnapshotMeta* sMeta);
 
 bool syncNodeCanChange(SSyncNode* pSyncNode);
-bool syncNodeCheckNewConfig(SSyncNode* pSyncNode, const SSyncCfg* pNewCfg);
 
 int32_t syncNodeLeaderTransfer(SSyncNode* pSyncNode);
 int32_t syncNodeLeaderTransferTo(SSyncNode* pSyncNode, SNodeInfo newLeader);

source/libs/sync/src/syncEnv.c

@@ -80,6 +80,7 @@ SSyncNode *syncNodeAcquire(int64_t rid) {
   SSyncNode *pNode = taosAcquireRef(gNodeRefId, rid);
   if (pNode == NULL) {
     sTrace("failed to acquire node from refId:%" PRId64, rid);
+    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
   }
 
   return pNode;

source/libs/sync/src/syncMain.c

@@ -13,6 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _DEFAULT_SOURCE
 #include "sync.h"
 #include "syncAppendEntries.h"
 #include "syncAppendEntriesReply.h"
@@ -34,8 +35,6 @@
 #include "syncUtil.h"
 #include "syncVoteMgr.h"
 
-// ------ local funciton ---------
-// enqueue message ----
 static void    syncNodeEqPingTimer(void* param, void* tmrId);
 static void    syncNodeEqElectTimer(void* param, void* tmrId);
 static void    syncNodeEqHeartbeatTimer(void* param, void* tmrId);
@@ -44,158 +43,145 @@ static int32_t syncNodeAppendNoop(SSyncNode* ths);
 static void    syncNodeEqPeerHeartbeatTimer(void* param, void* tmrId);
 static bool    syncIsConfigChanged(const SSyncCfg* pOldCfg, const SSyncCfg* pNewCfg);
 
-// process message ----
-int32_t syncNodeOnPing(SSyncNode* ths, SyncPing* pMsg);
-int32_t syncNodeOnPingReply(SSyncNode* ths, SyncPingReply* pMsg);
-
 int64_t syncOpen(SSyncInfo* pSyncInfo) {
-  SSyncNode* pNode = syncNodeOpen(pSyncInfo);
-  if (pNode == NULL) {
+  SSyncNode* pSyncNode = syncNodeOpen(pSyncInfo);
+  if (pSyncNode == NULL) {
     sError("vgId:%d, failed to open sync node", pSyncInfo->vgId);
     return -1;
   }
 
-  pNode->rid = syncNodeAdd(pNode);
-  if (pNode->rid < 0) {
-    syncNodeClose(pNode);
+  pSyncNode->rid = syncNodeAdd(pSyncNode);
+  if (pSyncNode->rid < 0) {
+    syncNodeClose(pSyncNode);
     return -1;
   }
 
-  return pNode->rid;
+  return pSyncNode->rid;
 }
 
 void syncStart(int64_t rid) {
-  SSyncNode* pNode = syncNodeAcquire(rid);
-  if (pNode != NULL) {
-    syncNodeStart(pNode);
-    syncNodeRelease(pNode);
+  SSyncNode* pSyncNode = syncNodeAcquire(rid);
+  if (pSyncNode != NULL) {
+    syncNodeStart(pSyncNode);
+    syncNodeRelease(pSyncNode);
   }
 }
 
 void syncStop(int64_t rid) {
-  SSyncNode* pNode = syncNodeAcquire(rid);
-  if (pNode != NULL) {
-    syncNodeRelease(pNode);
-    syncNodeRemove(rid);
-  }
-}
-
-bool syncNodeCheckNewConfig(SSyncNode* pSyncNode, const SSyncCfg* pNewCfg) {
-  bool IamInNew = syncNodeInConfig(pSyncNode, pNewCfg);
-  if (!IamInNew) {
-    return false;
-  }
-
-  if (pNewCfg->replicaNum > pSyncNode->replicaNum + 1) {
-    return false;
-  }
-
-  if (pNewCfg->replicaNum < pSyncNode->replicaNum - 1) {
-    return false;
-  }
-
-  return true;
-}
-
-int32_t syncReconfigBuild(int64_t rid, const SSyncCfg* pNewCfg, SRpcMsg* pRpcMsg) {
   SSyncNode* pSyncNode = syncNodeAcquire(rid);
-  if (pSyncNode == NULL) {
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-  ASSERT(rid == pSyncNode->rid);
-  int32_t ret = 0;
-
-  if (!syncNodeCheckNewConfig(pSyncNode, pNewCfg)) {
+  if (pSyncNode != NULL) {
     syncNodeRelease(pSyncNode);
-    terrno = TSDB_CODE_SYN_NEW_CONFIG_ERROR;
-    sError("invalid new config. vgId:%d", pSyncNode->vgId);
-    return -1;
+    syncNodeRemove(rid);
   }
+}
 
-  char* newconfig = syncCfg2Str((SSyncCfg*)pNewCfg);
-  pRpcMsg->msgType = TDMT_SYNC_CONFIG_CHANGE;
-  pRpcMsg->info.noResp = 1;
-  pRpcMsg->contLen = strlen(newconfig) + 1;
-  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
-  snprintf(pRpcMsg->pCont, pRpcMsg->contLen, "%s", newconfig);
-  taosMemoryFree(newconfig);
-
-  syncNodeRelease(pSyncNode);
-  return ret;
+static bool syncNodeCheckNewConfig(SSyncNode* pSyncNode, const SSyncCfg* pCfg) {
+  if (!syncNodeInConfig(pSyncNode, pCfg)) return false;
+  return abs(pCfg->replicaNum - pSyncNode->replicaNum) <= 1;
 }
 
 int32_t syncReconfig(int64_t rid, SSyncCfg* pNewCfg) {
   SSyncNode* pSyncNode = syncNodeAcquire(rid);
-  if (pSyncNode == NULL) {
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-  ASSERT(rid == pSyncNode->rid);
+  if (pSyncNode == NULL) return -1;
 
   if (!syncNodeCheckNewConfig(pSyncNode, pNewCfg)) {
     syncNodeRelease(pSyncNode);
     terrno = TSDB_CODE_SYN_NEW_CONFIG_ERROR;
-    sError("invalid new config. vgId:%d", pSyncNode->vgId);
+    sError("vgId:%d, failed to reconfig since invalid new config", pSyncNode->vgId);
     return -1;
   }
 
-#if 0
-  char*   newconfig = syncCfg2Str((SSyncCfg*)pNewCfg);
-  int32_t ret = 0;
-
-  SRpcMsg rpcMsg = {0};
-  rpcMsg.msgType = TDMT_SYNC_CONFIG_CHANGE;
-  rpcMsg.info.noResp = 1;
-  rpcMsg.contLen = strlen(newconfig) + 1;
-  rpcMsg.pCont = rpcMallocCont(rpcMsg.contLen);
-  snprintf(rpcMsg.pCont, rpcMsg.contLen, "%s", newconfig);
-  taosMemoryFree(newconfig);
-  ret = syncNodePropose(pSyncNode, &rpcMsg, false);
-
-  syncNodeRelease(pSyncNode);
-  return ret;
-#else
   syncNodeUpdateNewConfigIndex(pSyncNode, pNewCfg);
   syncNodeDoConfigChange(pSyncNode, pNewCfg, SYNC_INDEX_INVALID);
+
   if (pSyncNode->state == TAOS_SYNC_STATE_LEADER) {
     syncNodeStopHeartbeatTimer(pSyncNode);
 
     for (int32_t i = 0; i < TSDB_MAX_REPLICA; ++i) {
-      syncHbTimerInit(pSyncNode, &(pSyncNode->peerHeartbeatTimerArr[i]), (pSyncNode->replicasId)[i]);
+      syncHbTimerInit(pSyncNode, &pSyncNode->peerHeartbeatTimerArr[i], pSyncNode->replicasId[i]);
     }
 
     syncNodeStartHeartbeatTimer(pSyncNode);
-
     syncNodeReplicate(pSyncNode);
   }
+
   syncNodeRelease(pSyncNode);
   return 0;
-#endif
 }
 
-int32_t syncLeaderTransfer(int64_t rid) {
+int32_t syncProcessMsg(int64_t rid, SRpcMsg* pMsg) {
+  int32_t code = -1;
+  if (!syncIsInit()) return code;
+
   SSyncNode* pSyncNode = syncNodeAcquire(rid);
-  if (pSyncNode == NULL) {
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
+  if (pSyncNode == NULL) return code;
+
+  if (pMsg->msgType == TDMT_SYNC_HEARTBEAT) {
+    SyncHeartbeat* pSyncMsg = syncHeartbeatFromRpcMsg2(pMsg);
+    code = syncNodeOnHeartbeat(pSyncNode, pSyncMsg);
+    syncHeartbeatDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_HEARTBEAT_REPLY) {
+    SyncHeartbeatReply* pSyncMsg = syncHeartbeatReplyFromRpcMsg2(pMsg);
+    code = syncNodeOnHeartbeatReply(pSyncNode, pSyncMsg);
+    syncHeartbeatReplyDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_TIMEOUT) {
+    SyncTimeout* pSyncMsg = syncTimeoutFromRpcMsg2(pMsg);
+    code = syncNodeOnTimer(pSyncNode, pSyncMsg);
+    syncTimeoutDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_PING) {
+    SyncPing* pSyncMsg = syncPingFromRpcMsg2(pMsg);
+    code = syncNodeOnPing(pSyncNode, pSyncMsg);
+    syncPingDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_PING_REPLY) {
+    SyncPingReply* pSyncMsg = syncPingReplyFromRpcMsg2(pMsg);
+    code = syncNodeOnPingReply(pSyncNode, pSyncMsg);
+    syncPingReplyDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_CLIENT_REQUEST) {
+    SyncClientRequest* pSyncMsg = syncClientRequestFromRpcMsg2(pMsg);
+    code = syncNodeOnClientRequest(pSyncNode, pSyncMsg, NULL);
+    syncClientRequestDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_REQUEST_VOTE) {
+    SyncRequestVote* pSyncMsg = syncRequestVoteFromRpcMsg2(pMsg);
+    code = syncNodeOnRequestVote(pSyncNode, pSyncMsg);
+    syncRequestVoteDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_REQUEST_VOTE_REPLY) {
+    SyncRequestVoteReply* pSyncMsg = syncRequestVoteReplyFromRpcMsg2(pMsg);
+    code = syncNodeOnRequestVoteReply(pSyncNode, pSyncMsg);
+    syncRequestVoteReplyDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES) {
+    SyncAppendEntries* pSyncMsg = syncAppendEntriesFromRpcMsg2(pMsg);
+    code = syncNodeOnAppendEntries(pSyncNode, pSyncMsg);
+    syncAppendEntriesDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
+    SyncAppendEntriesReply* pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pMsg);
+    code = syncNodeOnAppendEntriesReply(pSyncNode, pSyncMsg);
+    syncAppendEntriesReplyDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_SNAPSHOT_SEND) {
+    SyncSnapshotSend* pSyncMsg = syncSnapshotSendFromRpcMsg2(pMsg);
+    code = syncNodeOnSnapshot(pSyncNode, pSyncMsg);
+    syncSnapshotSendDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_SNAPSHOT_RSP) {
+    SyncSnapshotRsp* pSyncMsg = syncSnapshotRspFromRpcMsg2(pMsg);
+    code = syncNodeOnSnapshotReply(pSyncNode, pSyncMsg);
+    syncSnapshotRspDestroy(pSyncMsg);
+  } else if (pMsg->msgType == TDMT_SYNC_LOCAL_CMD) {
+    SyncLocalCmd* pSyncMsg = syncLocalCmdFromRpcMsg2(pMsg);
+    code = syncNodeOnLocalCmd(pSyncNode, pSyncMsg);
+    syncLocalCmdDestroy(pSyncMsg);
+  } else {
+    sError("vgId:%d, failed to process msg:%p since invalid type:%s", pSyncNode->vgId, pMsg, TMSG_INFO(pMsg->msgType));
+    code = -1;
   }
-  ASSERT(rid == pSyncNode->rid);
 
-  int32_t ret = syncNodeLeaderTransfer(pSyncNode);
   syncNodeRelease(pSyncNode);
-  return ret;
+  return code;
 }
 
-int32_t syncLeaderTransferTo(int64_t rid, SNodeInfo newLeader) {
+int32_t syncLeaderTransfer(int64_t rid) {
   SSyncNode* pSyncNode = syncNodeAcquire(rid);
-  if (pSyncNode == NULL) {
-    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
-    return -1;
-  }
-  ASSERT(rid == pSyncNode->rid);
+  if (pSyncNode == NULL) return -1;
 
-  int32_t ret = syncNodeLeaderTransferTo(pSyncNode, newLeader);
+  int32_t ret = syncNodeLeaderTransfer(pSyncNode);
   syncNodeRelease(pSyncNode);
   return ret;
 }
@@ -3675,4 +3661,4 @@ void syncLogRecvLocalCmd(SSyncNode* pSyncNode, const SyncLocalCmd* pMsg, const c
   snprintf(logBuf, sizeof(logBuf), "recv sync-local-cmd {cmd:%d-%s, sd-new-term:%" PRIu64 "}, %s", pMsg->cmd,
            syncLocalCmdGetStr(pMsg->cmd), pMsg->sdNewTerm, s);
   syncNodeEventLog(pSyncNode, logBuf);
-}
\ No newline at end of file
+}