fix(query): check probe in timer

src/client/inc/tsclient.h

@@ -397,9 +397,15 @@ typedef struct SSqlObj {
   int32_t          retryReason;  // previous error code
   struct SSqlObj  *prev, *next;
   int64_t          self;
+  
   // connect alive
-  int64_t          lastUpdate;
+  int64_t          lastProbe;    
+  int64_t          lastAlive;
   char             noAckCnt; // no recevie ack from sever count
+  void *           pPrevContext;
+  void *           pPrevConn;
+  void *           pPrevFdObj;
+  int32_t          prevFd;
 } SSqlObj;
 
 typedef struct SSqlStream {

src/client/src/tscServer.c

@@ -283,21 +283,40 @@ void tscProcessHeartBeatRsp(void *param, TAOS_RES *tres, int code) {
 
 // pSql connection link is broken
 bool dealConnBroken(SSqlObj * pSql) {
+  // TODO
+
   return true;
 }
 
 // if return true, send probe connection msg to sever ok
 bool sendProbeConnMsg(SSqlObj* pSql) {
-  pSql->noAckCnt++;
-  tscDebug("0x%"PRIx64" sendProbeConnMsg noAckCnt:%d", pSql->self, pSql->noAckCnt);
+  // check time out
+  int32_t probeTimeout = 60*1000;   // over this value send probe msg
+  int32_t killTimeout  = 3*60*1000; // over this value query can be killed
+  int64_t stime = MAX(pSql->stime, pSql->lastAlive);
+  int32_t diff = (int32_t)(taosGetTimestampMs() - stime);
+  if (diff < probeTimeout) {
+    // exec time short , need not probe alive
+    return true;
+  }
 
-  // send
-  pSql->rpcRid
+  if (diff > killTimeout) {
+    // need kill query
+    tscDebug("PROBE 0x%"PRIx64" need killed, noAckCnt:%d diff=%d", pSql->self, pSql->noAckCnt, diff);
+    return false;
+  }
 
-  
-  
+  if (pSql->pPrevContext == NULL || pSql->pPrevConn == NULL ||  pSql->pPrevFdObj == NULL || pSql->prevFd <= 0) {
+    // last connect info save uncompletely, so can't probe
+    return true;
+  }
 
-  return true;
+  // It's long time from lastAlive, so need probe
+  pSql->noAckCnt++;
+  pSql->lastProbe = taosGetTimestampMs();
+  tscDebug("0x%"PRIx64" sendProbeConnMsg noAckCnt:%d diff=%d", pSql->self, pSql->noAckCnt, diff);
+
+  return rpcSendProbe(pSql->rpcRid, pSql->pPrevContext, pSql->pPrevConn, pSql->pPrevFdObj, pSql->prevFd);
 }
 
 // check have broken link queries than killed
@@ -350,11 +369,10 @@ void tscProcessActivityTimer(void *handle, void *tmrId) {
     // call check if have query doing
     if(pObj->sqlList && pObj->sqlList->next) {
       // have queries executing
-      checkBrokenQueies();
+      checkBrokenQueies(pObj);
     }
   }
 
-
   // send self connetion and queries
   pHB->retry = 0;
   int32_t code = tscBuildAndSendRequest(pHB, NULL);
@@ -398,8 +416,12 @@ int tscSendMsgToServer(SSqlObj *pSql) {
     return TSDB_CODE_FAILED;
   }
 
-  rpcSendRequest(pObj->pRpcObj->pDnodeConn, &pSql->epSet, &rpcMsg, &pSql->rpcRid);
-  return TSDB_CODE_SUCCESS;
+  if(rpcSendRequest(pObj->pRpcObj->pDnodeConn, &pSql->epSet, &rpcMsg, &pSql->rpcRid)) {
+    saveSendInfo(pSql->rpcRid, &pSql->pPrevContext, &pSql->pPrevConn, &pSql->pPrevFdObj, &pSql->prevFd);
+    return TSDB_CODE_SUCCESS;
+  }
+
+  return TSDB_CODE_FAILED;
 }
 
 // handle three situation

src/inc/trpc.h

@@ -85,7 +85,7 @@ void  rpcClose(void *);
 void *rpcMallocCont(int contLen);
 void  rpcFreeCont(void *pCont);
 void *rpcReallocCont(void *ptr, int contLen);
-void  rpcSendRequest(void *thandle, const SRpcEpSet *pEpSet, SRpcMsg *pMsg, int64_t *rid);
+bool  rpcSendRequest(void *thandle, const SRpcEpSet *pEpSet, SRpcMsg *pMsg, int64_t *rid);
 void  rpcSendResponse(const SRpcMsg *pMsg);
 void  rpcSendRedirectRsp(void *pConn, const SRpcEpSet *pEpSet); 
 int   rpcGetConnInfo(void *thandle, SRpcConnInfo *pInfo);
@@ -93,7 +93,10 @@ void  rpcSendRecv(void *shandle, SRpcEpSet *pEpSet, SRpcMsg *pReq, SRpcMsg *pRsp
 int   rpcReportProgress(void *pConn, char *pCont, int contLen);
 void  rpcCancelRequest(int64_t rid);
 int32_t rpcUnusedSession(void * rpcInfo, bool bLock);
-
+// send rpc Refid connection probe alive message 
+bool rpcSendProbe(int64_t rpcRid, void* pPrevContext, void* pPrevConn, void* pPrevFdObj, int32_t prevFd);
+// after sql request send , save conn info
+bool saveSendInfo(int64_t rpcRid, void** ppContext, void** ppConn, void** ppFdObj, int32_t* pFd);
 
 #ifdef __cplusplus
 }

src/rpc/src/rpcMain.c

@@ -193,7 +193,7 @@ static SRpcConn *rpcAllocateClientConn(SRpcInfo *pRpc);
 static SRpcConn *rpcAllocateServerConn(SRpcInfo *pRpc, SRecvInfo *pRecv);
 static SRpcConn *rpcGetConnObj(SRpcInfo *pRpc, int sid, SRecvInfo *pRecv);
 
-static void  rpcSendReqToServer(SRpcInfo *pRpc, SRpcReqContext *pContext);
+static bool  rpcSendReqToServer(SRpcInfo *pRpc, SRpcReqContext *pContext);
 static void  rpcSendQuickRsp(SRpcConn *pConn, int32_t code);
 static void  rpcSendErrorMsgToPeer(SRecvInfo *pRecv, int32_t code);
 static bool  rpcSendMsgToPeer(SRpcConn *pConn, void *data, int dataLen);
@@ -385,7 +385,7 @@ void *rpcReallocCont(void *ptr, int contLen) {
   return start + sizeof(SRpcReqContext) + sizeof(SRpcHead);
 }
 
-void rpcSendRequest(void *shandle, const SRpcEpSet *pEpSet, SRpcMsg *pMsg, int64_t *pRid) {
+bool rpcSendRequest(void *shandle, const SRpcEpSet *pEpSet, SRpcMsg *pMsg, int64_t *pRid) {
   SRpcInfo       *pRpc = (SRpcInfo *)shandle;
   SRpcReqContext *pContext;
 
@@ -415,7 +415,7 @@ void rpcSendRequest(void *shandle, const SRpcEpSet *pEpSet, SRpcMsg *pMsg, int64
   pContext->rid = taosAddRef(tsRpcRefId, pContext);
   if (pRid) *pRid = pContext->rid;
 
-  rpcSendReqToServer(pRpc, pContext);
+  return rpcSendReqToServer(pRpc, pContext);
 }
 
 void rpcSendResponse(const SRpcMsg *pRsp) {
@@ -1302,7 +1302,7 @@ static void rpcSendErrorMsgToPeer(SRecvInfo *pRecv, int32_t code) {
   return; 
 }
 
-static void rpcSendReqToServer(SRpcInfo *pRpc, SRpcReqContext *pContext) {
+static bool rpcSendReqToServer(SRpcInfo *pRpc, SRpcReqContext *pContext) {
   SRpcHead  *pHead = rpcHeadFromCont(pContext->pCont);
   char      *msg = (char *)pHead;
   int        msgLen = rpcMsgLenFromCont(pContext->contLen);
@@ -1313,7 +1313,7 @@ static void rpcSendReqToServer(SRpcInfo *pRpc, SRpcReqContext *pContext) {
   if (pConn == NULL) {
     pContext->code = terrno;
     taosTmrStart(rpcProcessConnError, 1, pContext, pRpc->tmrCtrl);
-    return;
+    return false;
   }
 
   pContext->pConn = pConn;
@@ -1342,11 +1342,12 @@ static void rpcSendReqToServer(SRpcInfo *pRpc, SRpcReqContext *pContext) {
   pConn->reqMsgLen = msgLen;
   pConn->pContext = pContext;
 
-  rpcSendMsgToPeer(pConn, msg, msgLen);
+  bool ret = rpcSendMsgToPeer(pConn, msg, msgLen);
   if (pConn->connType != RPC_CONN_TCPC)
     taosTmrReset(rpcProcessRetryTimer, tsRpcTimer, pConn, pRpc->tmrCtrl, &pConn->pTimer);
 
   rpcUnlockConn(pConn);
+  return ret;
 }
 
 static bool rpcSendMsgToPeer(SRpcConn *pConn, void *msg, int msgLen) {
@@ -1763,7 +1764,28 @@ _END:
   return ret;
 }
 
-
+// after sql request send , save conn info
 bool saveSendInfo(int64_t rpcRid, void** ppContext, void** ppConn, void** ppFdObj, int32_t* pFd) {
- return true;
+  if(rpcRid < 0) {
+    tError("ACK saveSendInfo rpcRid=%" PRId64 " less than zero, invalid.", rpcRid);
+    return false;
+  }  
+  // get req content
+  SRpcReqContext *pContext = taosAcquireRef(tsRpcRefId, rpcRid);
+  if (pContext == NULL) {
+    tError("ACK rpcRid=%" PRId64 " get context NULL.", rpcRid);
+    return false;
+  }
+
+  if (ppContext)
+    *ppContext = pContext;
+  if (ppConn)
+    *ppConn    = pContext->pConn;
+  if (ppFdObj)
+    *ppFdObj   = pContext->pConn->chandle;
+  if (pFd)
+    *pFd       = taosGetFdID(pContext->pConn->chandle);
+
+  taosReleaseRef(tsRpcRefId, rpcRid);
+  return true;
 }