enh: refact fetch message

include/common/tmsg.h

@@ -1629,7 +1629,6 @@ int32_t tSerializeSSubQueryMsg(void *buf, int32_t bufLen, SSubQueryMsg *pReq);
 int32_t tDeserializeSSubQueryMsg(void *buf, int32_t bufLen, SSubQueryMsg *pReq);
 void tFreeSSubQueryMsg(SSubQueryMsg *pReq);
 
-
 typedef struct {
   SMsgHead header;
   uint64_t sId;
@@ -1667,6 +1666,10 @@ typedef struct {
   int32_t  execId;
 } SResFetchReq;
 
+int32_t tSerializeSResFetchReq(void *buf, int32_t bufLen, SResFetchReq *pReq);
+int32_t tDeserializeSResFetchReq(void *buf, int32_t bufLen, SResFetchReq *pReq);
+
+
 typedef struct {
   SMsgHead header;
   uint64_t sId;

source/common/src/tmsg.c

@@ -4723,6 +4723,61 @@ void tFreeSSubQueryMsg(SSubQueryMsg *pReq) {
   taosMemoryFreeClear(pReq->msg);
 }
 
+
+int32_t tSerializeSResFetchReq(void *buf, int32_t bufLen, SResFetchReq *pReq) {
+  int32_t headLen = sizeof(SMsgHead);
+  if (buf != NULL) {
+    buf = (char *)buf + headLen;
+    bufLen -= headLen;
+  }
+
+  SEncoder encoder = {0};
+  tEncoderInit(&encoder, buf, bufLen);
+  if (tStartEncode(&encoder) < 0) return -1;
+
+  if (tEncodeU64(&encoder, pReq->sId) < 0) return -1;
+  if (tEncodeU64(&encoder, pReq->queryId) < 0) return -1;
+  if (tEncodeU64(&encoder, pReq->taskId) < 0) return -1;
+  if (tEncodeI32(&encoder, pReq->execId) < 0) return -1;
+
+  tEndEncode(&encoder);
+
+  int32_t tlen = encoder.pos;
+  tEncoderClear(&encoder);
+
+  if (buf != NULL) {
+    SMsgHead *pHead = (SMsgHead *)((char *)buf - headLen);
+    pHead->vgId = htonl(pReq->header.vgId);
+    pHead->contLen = htonl(tlen + headLen);
+  }
+
+  return tlen + headLen;
+}
+
+int32_t tDeserializeSResFetchReq(void *buf, int32_t bufLen, SResFetchReq *pReq) {
+  int32_t headLen = sizeof(SMsgHead);
+
+  SMsgHead *pHead = buf;
+  pHead->vgId = pReq->header.vgId;
+  pHead->contLen = pReq->header.contLen;
+
+  SDecoder decoder = {0};
+  tDecoderInit(&decoder, (char *)buf + headLen, bufLen - headLen);
+
+  if (tStartDecode(&decoder) < 0) return -1;
+
+  if (tDecodeU64(&decoder, &pReq->sId) < 0) return -1;
+  if (tDecodeU64(&decoder, &pReq->queryId) < 0) return -1;
+  if (tDecodeU64(&decoder, &pReq->taskId) < 0) return -1;
+  if (tDecodeI32(&decoder, &pReq->execId) < 0) return -1;
+  
+  tEndDecode(&decoder);
+
+  tDecoderClear(&decoder);
+  return 0;
+}
+
+
 int32_t tSerializeSTqOffsetVal(SEncoder *pEncoder, STqOffsetVal *pOffset) {
   if (tEncodeI8(pEncoder, pOffset->type) < 0) return -1;
   if (tEncodeI64(pEncoder, pOffset->uid) < 0) return -1;

source/libs/executor/src/exchangeoperator.c

@@ -403,27 +403,42 @@ int32_t doSendFetchDataRequest(SExchangeInfo* pExchangeInfo, SExecTaskInfo* pTas
     loadRemoteDataCallback(pWrapper, &pBuf, code);
     taosMemoryFree(pWrapper);
   } else {
-    SResFetchReq* pMsg = taosMemoryCalloc(1, sizeof(SResFetchReq));
-    if (NULL == pMsg) {
+    SResFetchReq req = {0};
+    req.header.vgId = pSource->addr.nodeId;
+    req.sId = pSource->schedId;
+    req.taskId = pSource->taskId;
+    req.queryId = pTaskInfo->id.queryId;
+    req.execId = pSource->execId;
+
+    int32_t msgSize = tSerializeSResFetchReq(NULL, 0, &req);
+    if (msgSize < 0) {
       pTaskInfo->code = TSDB_CODE_QRY_OUT_OF_MEMORY;
       taosMemoryFree(pWrapper);
       return pTaskInfo->code;
     }
     
+    void* msg = taosMemoryCalloc(1, msgSize);
+    if (NULL == msg) {
+      pTaskInfo->code = TSDB_CODE_QRY_OUT_OF_MEMORY;
+      taosMemoryFree(pWrapper);
+      return pTaskInfo->code;
+    }
+    
+    if (tSerializeSResFetchReq(msg, msgSize, &req) < 0) {
+      pTaskInfo->code = TSDB_CODE_QRY_OUT_OF_MEMORY;
+      taosMemoryFree(pWrapper);
+      taosMemoryFree(msg);
+      return pTaskInfo->code;
+    }
+
     qDebug("%s build fetch msg and send to vgId:%d, ep:%s, taskId:0x%" PRIx64 ", execId:%d, %d/%" PRIzu,
            GET_TASKID(pTaskInfo), pSource->addr.nodeId, pSource->addr.epSet.eps[0].fqdn, pSource->taskId,
            pSource->execId, sourceIndex, totalSources);
 
-    pMsg->header.vgId = htonl(pSource->addr.nodeId);
-    pMsg->sId = htobe64(pSource->schedId);
-    pMsg->taskId = htobe64(pSource->taskId);
-    pMsg->queryId = htobe64(pTaskInfo->id.queryId);
-    pMsg->execId = htonl(pSource->execId);
-
     // send the fetch remote task result reques
     SMsgSendInfo* pMsgSendInfo = taosMemoryCalloc(1, sizeof(SMsgSendInfo));
     if (NULL == pMsgSendInfo) {
-      taosMemoryFreeClear(pMsg);
+      taosMemoryFreeClear(msg);
       taosMemoryFree(pWrapper);
       qError("%s prepare message %d failed", GET_TASKID(pTaskInfo), (int32_t)sizeof(SMsgSendInfo));
       pTaskInfo->code = TSDB_CODE_QRY_OUT_OF_MEMORY;
@@ -432,8 +447,8 @@ int32_t doSendFetchDataRequest(SExchangeInfo* pExchangeInfo, SExecTaskInfo* pTas
 
     pMsgSendInfo->param = pWrapper;
     pMsgSendInfo->paramFreeFp = taosMemoryFree;
-    pMsgSendInfo->msgInfo.pData = pMsg;
-    pMsgSendInfo->msgInfo.len = sizeof(SResFetchReq);
+    pMsgSendInfo->msgInfo.pData = msg;
+    pMsgSendInfo->msgInfo.len = msgSize;
     pMsgSendInfo->msgType = pSource->fetchMsgType;
     pMsgSendInfo->fp = loadRemoteDataCallback;
 

source/libs/qworker/src/qwMsg.c

@@ -499,27 +499,22 @@ int32_t qWorkerProcessFetchMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int
     return TSDB_CODE_QRY_INVALID_INPUT;
   }
 
-  SResFetchReq *msg = pMsg->pCont;
+  SResFetchReq req = {0};
   SQWorker     *mgmt = (SQWorker *)qWorkerMgmt;
 
   qwUpdateTimeInQueue(mgmt, ts, FETCH_QUEUE);
   QW_STAT_INC(mgmt->stat.msgStat.fetchProcessed, 1);
 
-  if (NULL == msg || pMsg->contLen < sizeof(*msg)) {
-    QW_ELOG("invalid fetch msg, msg:%p, msgLen:%d", msg, pMsg->contLen);
+  if (tDeserializeSResFetchReq(pMsg->pCont, pMsg->contLen, &req) < 0) {
+    QW_ELOG("tDeserializeSResFetchReq %d failed", pMsg->contLen);
     QW_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
   }
 
-  msg->sId = be64toh(msg->sId);
-  msg->queryId = be64toh(msg->queryId);
-  msg->taskId = be64toh(msg->taskId);
-  msg->execId = ntohl(msg->execId);
-
-  uint64_t sId = msg->sId;
-  uint64_t qId = msg->queryId;
-  uint64_t tId = msg->taskId;
+  uint64_t sId = req.sId;
+  uint64_t qId = req.queryId;
+  uint64_t tId = req.taskId;
   int64_t  rId = 0;
-  int32_t  eId = msg->execId;
+  int32_t  eId = req.execId;
 
   SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0, .connInfo = pMsg->info, .msgType = pMsg->msgType};
 

source/libs/scheduler/src/schRemote.c

@@ -1083,22 +1083,29 @@ int32_t schBuildAndSendMsg(SSchJob *pJob, SSchTask *pTask, SQueryNodeAddr *addr,
     }
     case TDMT_SCH_FETCH:
     case TDMT_SCH_MERGE_FETCH: {
-      msgSize = sizeof(SResFetchReq);
+      SResFetchReq req = {0};
+      req.header.vgId = addr->nodeId;
+      req.sId = schMgmt.sId;
+      req.queryId = pJob->queryId;
+      req.taskId = pTask->taskId;
+      req.execId = pTask->execId;
+
+      msgSize = tSerializeSResFetchReq(NULL, 0, &req);
+      if (msgSize < 0) {
+        SCH_TASK_ELOG("tSerializeSResFetchReq get size, msgSize:%d", msgSize);
+        SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+      }
+      
       msg = taosMemoryCalloc(1, msgSize);
       if (NULL == msg) {
         SCH_TASK_ELOG("calloc %d failed", msgSize);
         SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
       }
 
-      SResFetchReq *pMsg = msg;
-
-      pMsg->header.vgId = htonl(addr->nodeId);
-
-      pMsg->sId = htobe64(schMgmt.sId);
-      pMsg->queryId = htobe64(pJob->queryId);
-      pMsg->taskId = htobe64(pTask->taskId);
-      pMsg->execId = htonl(pTask->execId);
-
+      if (tSerializeSResFetchReq(msg, msgSize, &req) < 0) {
+        SCH_TASK_ELOG("tSerializeSResFetchReq %d failed", msgSize);
+        SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+      }
       break;
     }
     case TDMT_SCH_DROP_TASK: {