enh(stream): refactor and serialize the attributes of history tasks.

include/common/tcommon.h

@@ -54,6 +54,11 @@ typedef struct SSessionKey {
   uint64_t    groupId;
 } SSessionKey;
 
+typedef struct SVersionRange {
+  uint64_t minVer;
+  uint64_t maxVer;
+} SVersionRange;
+
 static inline int winKeyCmprImpl(const void* pKey1, const void* pKey2) {
   SWinKey* pWin1 = (SWinKey*)pKey1;
   SWinKey* pWin2 = (SWinKey*)pKey2;

include/libs/stream/tstream.h

@@ -276,6 +276,11 @@ typedef struct SStreamStatus {
   int8_t keepTaskStatus;
 } SStreamStatus;
 
+typedef struct SHistoryDataRange {
+  SVersionRange range;
+  STimeWindow   window;
+} SHistoryDataRange;
+
 struct SStreamTask {
   SStreamId       id;
   int32_t         totalLevel;
@@ -290,9 +295,9 @@ struct SStreamTask {
   STaskExec       exec;
   int8_t          fillHistory;  // fill history
 
-  int64_t         ekey;         // end ts key
-  int64_t         endVer;       // end version
-  SStreamId       historyTaskId;
+  SHistoryDataRange dataRange;
+  SStreamId         historyTaskId;
+
   // children info
   SArray* childEpInfo;  // SArray<SStreamChildEpInfo*>
   int32_t nextCheckId;

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

@@ -476,7 +476,7 @@ int32_t mndPersistStreamTasks(SMnode *pMnode, STrans *pTrans, SStreamObj *pStrea
     }
   }
 
-  // persistent stream task for history data
+  // persistent stream task for already stored ts data
   if (pStream->conf.fillHistory) {
     level = taosArrayGetSize(pStream->pHTasksList);
 
@@ -493,7 +493,6 @@ int32_t mndPersistStreamTasks(SMnode *pMnode, STrans *pTrans, SStreamObj *pStrea
     }
   }
 
-
   return 0;
 }
 
@@ -639,6 +638,7 @@ static int32_t mndPersistTaskDropReq(STrans *pTrans, SStreamTask *pTask) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
+
   pReq->head.vgId = htonl(pTask->nodeId);
   pReq->taskId = pTask->id.taskId;
   STransAction action = {0};

source/dnode/vnode/src/inc/tsdb.h

@@ -64,7 +64,6 @@ typedef struct STsdbReadSnap    STsdbReadSnap;
 typedef struct SBlockInfo       SBlockInfo;
 typedef struct SSmaInfo         SSmaInfo;
 typedef struct SBlockCol        SBlockCol;
-typedef struct SVersionRange    SVersionRange;
 typedef struct SLDataIter       SLDataIter;
 typedef struct SDiskCol         SDiskCol;
 typedef struct SDiskData        SDiskData;
@@ -376,11 +375,6 @@ struct TSDBKEY {
   TSKEY   ts;
 };
 
-struct SVersionRange {
-  uint64_t minVer;
-  uint64_t maxVer;
-};
-
 typedef struct SMemSkipListNode SMemSkipListNode;
 struct SMemSkipListNode {
   int8_t            level;

source/libs/stream/src/streamTask.c

@@ -187,6 +187,13 @@ int32_t tEncodeStreamTask(SEncoder* pEncoder, const SStreamTask* pTask) {
   if (tEncodeI64(pEncoder, pTask->chkInfo.version) < 0) return -1;
   if (tEncodeI8(pEncoder, pTask->fillHistory) < 0) return -1;
 
+  if (tEncodeI64(pEncoder, pTask->historyTaskId.streamId)) return -1;
+  if (tEncodeI32(pEncoder, pTask->historyTaskId.taskId)) return -1;
+  if (tEncodeU64(pEncoder, pTask->dataRange.range.minVer)) return -1;
+  if (tEncodeU64(pEncoder, pTask->dataRange.range.maxVer)) return -1;
+  if (tEncodeI64(pEncoder, pTask->dataRange.window.skey)) return -1;
+  if (tEncodeI64(pEncoder, pTask->dataRange.window.ekey)) return -1;
+
   int32_t epSz = taosArrayGetSize(pTask->childEpInfo);
   if (tEncodeI32(pEncoder, epSz) < 0) return -1;
   for (int32_t i = 0; i < epSz; i++) {
@@ -240,6 +247,13 @@ int32_t tDecodeStreamTask(SDecoder* pDecoder, SStreamTask* pTask) {
   if (tDecodeI64(pDecoder, &pTask->chkInfo.version) < 0) return -1;
   if (tDecodeI8(pDecoder, &pTask->fillHistory) < 0) return -1;
 
+  if (tDecodeI64(pDecoder, &pTask->historyTaskId.streamId)) return -1;
+  if (tDecodeI32(pDecoder, &pTask->historyTaskId.taskId)) return -1;
+  if (tDecodeU64(pDecoder, &pTask->dataRange.range.minVer)) return -1;
+  if (tDecodeU64(pDecoder, &pTask->dataRange.range.maxVer)) return -1;
+  if (tDecodeI64(pDecoder, &pTask->dataRange.window.skey)) return -1;
+  if (tDecodeI64(pDecoder, &pTask->dataRange.window.ekey)) return -1;
+
   int32_t epSz;
   if (tDecodeI32(pDecoder, &epSz) < 0) return -1;
   pTask->childEpInfo = taosArrayInit(epSz, sizeof(void*));