refactor(sync): add sync local cmd

include/libs/sync/sync.h

@@ -232,6 +232,8 @@ 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);
+
 #ifdef __cplusplus
 }
 #endif

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

@@ -586,6 +586,11 @@ int32_t mndProcessSyncMsg(SRpcMsg *pMsg) {
     SRpcMsg rsp = {.code = code, .info = pMsg->info};
     tmsgSendRsp(&rsp);
 
+  } 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;

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

@@ -350,6 +350,11 @@ int32_t vnodeProcessSyncMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
     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;

source/libs/sync/src/syncMain.c

@@ -528,6 +528,20 @@ int32_t syncEndSnapshot(int64_t rid) {
   return code;
 }
 
+int32_t syncStepDown(int64_t rid, SyncTerm newTerm) {
+  SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
+  if (pSyncNode == NULL) {
+    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
+    return -1;
+  }
+  ASSERT(rid == pSyncNode->rid);
+
+  syncNodeStepDown(pSyncNode, newTerm);
+
+  taosReleaseRef(tsNodeRefId, pSyncNode->rid);
+  return 0;
+}
+
 int32_t syncNodeLeaderTransfer(SSyncNode* pSyncNode) {
   if (pSyncNode->peersNum == 0) {
     sDebug("only one replica, cannot leader transfer");
@@ -3041,12 +3055,6 @@ int32_t syncNodeOnHeartbeat(SSyncNode* ths, SyncHeartbeat* pMsg) {
   SRpcMsg rpcMsg;
   syncHeartbeatReply2RpcMsg(pMsgReply, &rpcMsg);
 
-#if 1
-  if (pMsg->term >= ths->pRaftStore->currentTerm && ths->state != TAOS_SYNC_STATE_FOLLOWER) {
-    syncNodeStepDown(ths, pMsg->term);
-  }
-#endif
-
   if (pMsg->term == ths->pRaftStore->currentTerm && ths->state != TAOS_SYNC_STATE_LEADER) {
     syncNodeResetElectTimer(ths);
     ths->minMatchIndex = pMsg->minMatchIndex;
@@ -3058,6 +3066,12 @@ int32_t syncNodeOnHeartbeat(SSyncNode* ths, SyncHeartbeat* pMsg) {
 #endif
   }
 
+#if 1
+  if (pMsg->term >= ths->pRaftStore->currentTerm && ths->state != TAOS_SYNC_STATE_FOLLOWER) {
+    syncNodeStepDown(ths, pMsg->term);
+  }
+#endif
+
   /*
     // htonl
     SMsgHead* pHead = rpcMsg.pCont;
@@ -3081,6 +3095,17 @@ int32_t syncNodeOnHeartbeatReply(SSyncNode* ths, SyncHeartbeatReply* pMsg) {
   return 0;
 }
 
+int32_t syncNodeOnLocalCmd(SSyncNode* ths, SyncLocalCmd* pMsg) {
+  if (pMsg->cmd == SYNC_LOCAL_CMD_STEP_DOWN) {
+    syncNodeStepDown(ths, pMsg->sdNewTerm);
+
+  } else {
+    syncNodeErrorLog(ths, "error local cmd");
+  }
+
+  return 0;
+}
+
 // TLA+ Spec
 // ClientRequest(i, v) ==
 //     /\ state[i] = Leader