enh: rpc set default epset

include/libs/transport/trpc.h

@@ -125,6 +125,7 @@ void    rpcSendRedirectRsp(void *pConn, const SEpSet *pEpSet);
 void    rpcSendRequestWithCtx(void *thandle, const SEpSet *pEpSet, SRpcMsg *pMsg, int64_t *rid, SRpcCtx *ctx);
 int32_t rpcGetConnInfo(void *thandle, SRpcConnInfo *pInfo);
 void    rpcSendRecv(void *shandle, SEpSet *pEpSet, SRpcMsg *pReq, SRpcMsg *pRsp);
+void    rpcSetDefaultEpSet(void *thandle, const SEpSet *dst);
 
 #ifdef __cplusplus
 }

source/libs/transport/inc/transComm.h

@@ -155,7 +155,7 @@ typedef struct {
 
 #pragma pack(pop)
 
-typedef enum { Normal, Quit, Release, Register } STransMsgType;
+typedef enum { Normal, Quit, Release, Register, Update } STransMsgType;
 typedef enum { ConnNormal, ConnAcquire, ConnRelease, ConnBroken, ConnInPool } ConnStatus;
 
 #define container_of(ptr, type, member) ((type*)((char*)(ptr)-offsetof(type, member)))
@@ -231,6 +231,7 @@ void transSendRecv(void* shandle, const SEpSet* pEpSet, STransMsg* pMsg, STransM
 void transSendResponse(const STransMsg* msg);
 void transRegisterMsg(const STransMsg* msg);
 int  transGetConnInfo(void* thandle, STransHandleInfo* pInfo);
+void transSetDefaultEpSet(void* shandle, const SEpSet* dst);
 
 void* transInitServer(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle);
 void* transInitClient(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle);

source/libs/transport/src/trans.c

@@ -148,6 +148,10 @@ void rpcReleaseHandle(void* handle, int8_t type) {
   assert(type == TAOS_CONN_SERVER || type == TAOS_CONN_CLIENT);
   (*transReleaseHandle[type])(handle);
 }
+void rpcSetDefaultEpSet(void* thandle, const SEpSet* dst) {
+  // later
+  transSetDefaultEpSet(thandle, dst);
+}
 
 int32_t rpcInit() {
   // impl later

source/libs/transport/src/transCli.c

@@ -63,6 +63,10 @@ typedef struct SCliThrdObj {
   SDelayQueue*  delayQueue;
   uint64_t      nextTimeout;  // next timeout
   void*         pTransInst;   //
+
+  bool   useDefaultEpSet;
+  SEpSet defaultEpSet;
+
   bool quit;
 } SCliThrdObj;
 
@@ -116,7 +120,9 @@ static void cliHandleExcept(SCliConn* conn);
 static void cliHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd);
 static void cliHandleQuit(SCliMsg* pMsg, SCliThrdObj* pThrd);
 static void cliHandleRelease(SCliMsg* pMsg, SCliThrdObj* pThrd);
-static void (*cliAsyncHandle[])(SCliMsg* pMsg, SCliThrdObj* pThrd) = {cliHandleReq, cliHandleQuit, cliHandleRelease};
+static void cliHandleUpdate(SCliMsg* pMsg, SCliThrdObj* pThrd);
+static void (*cliAsyncHandle[])(SCliMsg* pMsg, SCliThrdObj* pThrd) = {cliHandleReq, cliHandleQuit, cliHandleRelease,
+                                                                      cliHandleUpdate};
 
 static void cliSendQuit(SCliThrdObj* thrd);
 static void destroyUserdata(STransMsg* userdata);
@@ -683,6 +689,15 @@ static void cliHandleRelease(SCliMsg* pMsg, SCliThrdObj* pThrd) {
     transUnrefCliHandle(conn);
   }
 }
+static void cliHandleUpdate(SCliMsg* pMsg, SCliThrdObj* pThrd) {
+  STransConnCtx* pCtx = pMsg->ctx;
+
+  pThrd->useDefaultEpSet = true;
+  pThrd->defaultEpSet = pCtx->epSet;
+
+  tsem_post(pCtx->pSem);
+  destroyCmsg(pMsg);
+}
 
 SCliConn* cliGetConn(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   SCliConn* conn = NULL;
@@ -712,6 +727,10 @@ void cliHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   STransConnCtx* pCtx = pMsg->ctx;
   STrans*        pTransInst = pThrd->pTransInst;
 
+  if (pThrd->useDefaultEpSet) {
+    pCtx->epSet = pThrd->defaultEpSet;
+  }
+
   SCliConn* conn = cliGetConn(pMsg, pThrd);
   if (conn != NULL) {
     conn->hThrdIdx = pCtx->hThrdIdx;
@@ -1067,4 +1086,28 @@ void transSendRecv(void* shandle, const SEpSet* pEpSet, STransMsg* pReq, STransM
   taosMemoryFree(pSem);
 }
 
+void transSetDefaultEpSet(void* ahandle, const SEpSet* dst) {
+  STrans* pTransInst = ahandle;
+  for (int i = 0; i < pTransInst->numOfThreads; i++) {
+    STransConnCtx* pCtx = taosMemoryCalloc(1, sizeof(STransConnCtx));
+    pCtx->hThrdIdx = i;
+    pCtx->epSet = *dst;
+    pCtx->pSem = taosMemoryCalloc(1, sizeof(tsem_t));
+    tsem_init(pCtx->pSem, 0, 0);
+
+    SCliMsg* cliMsg = taosMemoryCalloc(1, sizeof(SCliMsg));
+    cliMsg->ctx = pCtx;
+    cliMsg->type = Update;
+
+    SCliThrdObj* thrd = ((SCliObj*)pTransInst->tcphandle)->pThreadObj[i];
+    tDebug("send update epset at thread:%d, threadID:%" PRId64 "", i, thrd->thread);
+
+    tsem_t* pSem = pCtx->pSem;
+    transSendAsync(thrd->asyncPool, &(cliMsg->q));
+
+    tsem_wait(pSem);
+    tsem_destroy(pSem);
+    taosMemoryFree(pSem);
+  }
+}
 #endif