add redirect before syncPropose

include/libs/sync/sync.h

@@ -149,6 +149,7 @@ int32_t     syncReconfig(int64_t rid, const SSyncCfg* pSyncCfg);
 ESyncState  syncGetMyRole(int64_t rid);
 const char* syncGetMyRoleStr(int64_t rid);
 SyncTerm    syncGetMyTerm(int64_t rid);
+void        syncGetEpSet(int64_t rid, SEpSet* pEpSet);
 
 typedef enum {
   TAOS_SYNC_PROPOSE_SUCCESS = 0,

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

@@ -149,9 +149,13 @@ static void vmProcessWriteQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numO
 
     int32_t ret = syncPropose(vnodeGetSyncHandle(pVnode->pImpl), pRpc, false);
     if (ret == TAOS_SYNC_PROPOSE_NOT_LEADER) {
-      rsp.code = TSDB_CODE_SYN_NOT_LEADER;
-      tmsgSendRsp(&rsp);
-      // SEpSet epSet; TODO
+      // rsp.code = TSDB_CODE_SYN_NOT_LEADER;
+      // tmsgSendRsp(&rsp);
+
+      rsp.code = TSDB_CODE_RPC_REDIRECT;
+      SEpSet newEpSet;
+      syncGetEpSet(vnodeGetSyncHandle(pVnode->pImpl), &newEpSet);
+      tmsgSendRedirectRsp(&rsp, &newEpSet);
 
     } else if (ret == TAOS_SYNC_PROPOSE_OTHER_ERROR) {
       rsp.code = TSDB_CODE_SYN_INTERNAL_ERROR;

source/libs/sync/src/syncMain.c

@@ -153,6 +153,24 @@ SyncTerm syncGetMyTerm(int64_t rid) {
   return term;
 }
 
+void syncGetEpSet(int64_t rid, SEpSet* pEpSet) {
+  SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
+  if (pSyncNode == NULL) {
+    memset(pEpSet, 0, sizeof(*pEpSet));
+    return;
+  }
+  assert(rid == pSyncNode->rid);
+  pEpSet->numOfEps = 0;
+  for (int i = 0; i < pSyncNode->pRaftCfg->cfg.replicaNum; ++i) {
+    snprintf(pEpSet->eps->fqdn, sizeof(pEpSet->eps->fqdn), "%s", (pSyncNode->pRaftCfg->cfg.nodeInfo)[i].nodeFqdn);
+    pEpSet->eps->port = (pSyncNode->pRaftCfg->cfg.nodeInfo)[i].nodePort;
+    (pEpSet->numOfEps)++;
+  }
+  pEpSet->inUse = pSyncNode->pRaftCfg->cfg.myIndex;
+
+  taosReleaseRef(tsNodeRefId, pSyncNode->rid);
+}
+
 int32_t syncGetRespRpc(int64_t rid, uint64_t index, SRpcMsg* msg) {
   SSyncNode* pSyncNode = (SSyncNode*)taosAcquireRef(tsNodeRefId, rid);
   if (pSyncNode == NULL) {