taosdata / TDengine / #4513

/*

 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>

 *

 * This program is free software: you can use, redistribute, and/or modify

 * it under the terms of the GNU Affero General Public License, version 3

 * or later ("AGPL"), as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.

 *

 * You should have received a copy of the GNU Affero General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef _TD_VNODE_TSDB_H_

#define _TD_VNODE_TSDB_H_

// #include "../tsdb/tsdbFile2.h"

// #include "../tsdb/tsdbMerge.h"

// #include "../tsdb/tsdbSttFileRW.h"

#include "tsimplehash.h"

#include "vnodeInt.h"

#ifdef __cplusplus

extern "C" {

#endif

// tsdbDebug ================

// clang-format off

#define tsdbFatal(...) do { if (tsdbDebugFlag & DEBUG_FATAL) { taosPrintLog("TSD FATAL ", DEBUG_FATAL, 255,           __VA_ARGS__); }} while(0)

#define tsdbError(...) do { if (tsdbDebugFlag & DEBUG_ERROR) { taosPrintLog("TSD ERROR ", DEBUG_ERROR, 255,           __VA_ARGS__); }} while(0)

#define tsdbWarn(...)  do { if (tsdbDebugFlag & DEBUG_WARN)  { taosPrintLog("TSD WARN  ", DEBUG_WARN,  255,           __VA_ARGS__); }} while(0)

#define tsdbInfo(...)  do { if (tsdbDebugFlag & DEBUG_INFO)  { taosPrintLog("TSD INFO  ", DEBUG_INFO,  255,           __VA_ARGS__); }} while(0)

#define tsdbDebug(...) do { if (tsdbDebugFlag & DEBUG_DEBUG) { taosPrintLog("TSD DEBUG ", DEBUG_DEBUG, tsdbDebugFlag, __VA_ARGS__); }} while(0)

#define tsdbTrace(...) do { if (tsdbDebugFlag & DEBUG_TRACE) { taosPrintLog("TSD TRACE ", DEBUG_TRACE, tsdbDebugFlag, __VA_ARGS__); }} while(0)

// clang-format on

typedef struct TSDBROW          TSDBROW;

typedef struct TABLEID          TABLEID;

typedef struct TSDBKEY          TSDBKEY;

typedef struct SDelData         SDelData;

typedef struct SDelIdx          SDelIdx;

typedef struct STbData          STbData;

typedef struct SMemTable        SMemTable;

typedef struct STbDataIter      STbDataIter;

typedef struct SMapData         SMapData;

typedef struct SBlockIdx        SBlockIdx;

typedef struct SDataBlk         SDataBlk;

typedef struct SSttBlk          SSttBlk;

typedef struct SDiskDataHdr     SDiskDataHdr;

typedef struct SBlockData       SBlockData;

typedef struct SDelFile         SDelFile;

typedef struct SHeadFile        SHeadFile;

typedef struct SDataFile        SDataFile;

typedef struct SSttFile         SSttFile;

typedef struct SSmaFile         SSmaFile;

typedef struct SDFileSet        SDFileSet;

typedef struct SDataFWriter     SDataFWriter;

typedef struct SDataFReader     SDataFReader;

typedef struct SDelFWriter      SDelFWriter;

typedef struct SDelFReader      SDelFReader;

typedef struct STSDBRowIter     STSDBRowIter;

typedef struct STsdbFS          STsdbFS;

typedef struct SRowMerger       SRowMerger;

typedef struct STsdbReadSnap    STsdbReadSnap;

typedef struct SBlockInfo       SBlockInfo;

typedef struct SSmaInfo         SSmaInfo;

typedef struct SBlockCol        SBlockCol;

typedef struct SLDataIter       SLDataIter;

typedef struct SDiskCol         SDiskCol;

typedef struct SDiskData        SDiskData;

typedef struct SDiskDataBuilder SDiskDataBuilder;

typedef struct SBlkInfo         SBlkInfo;

typedef struct STsdbDataIter2   STsdbDataIter2;

typedef struct STsdbFilterInfo  STsdbFilterInfo;

typedef struct STFileSystem     STFileSystem;

typedef struct STsdbRowKey      STsdbRowKey;

#define TSDBROW_ROW_FMT ((int8_t)0x0)

#define TSDBROW_COL_FMT ((int8_t)0x1)

#define TSDB_FILE_DLMT ((uint32_t)0xF00AFA0F)

#define TSDB_FHDR_SIZE 512

#define VERSION_MIN 0

#define VERSION_MAX INT64_MAX

#define TSDBKEY_MIN ((TSDBKEY){.ts = TSKEY_MIN, .version = VERSION_MIN})

#define TSDBKEY_MAX ((TSDBKEY){.ts = TSKEY_MAX, .version = VERSION_MAX})

#define TABLE_SAME_SCHEMA(SUID1, UID1, SUID2, UID2) ((SUID1) ? (SUID1) == (SUID2) : (UID1) == (UID2))

#define PAGE_CONTENT_SIZE(PAGE) ((PAGE) - sizeof(TSCKSUM))

#define LOGIC_TO_FILE_OFFSET(LOFFSET, PAGE) \

  ((LOFFSET) / PAGE_CONTENT_SIZE(PAGE) * (PAGE) + (LOFFSET) % PAGE_CONTENT_SIZE(PAGE))

#define FILE_TO_LOGIC_OFFSET(OFFSET, PAGE) ((OFFSET) / (PAGE)*PAGE_CONTENT_SIZE(PAGE) + (OFFSET) % (PAGE))

#define PAGE_OFFSET(PGNO, PAGE)            (((PGNO)-1) * (PAGE))

#define OFFSET_PGNO(OFFSET, PAGE)          ((OFFSET) / (PAGE) + 1)

static FORCE_INLINE int64_t tsdbLogicToFileSize(int64_t lSize, int32_t szPage) {

  }

}

// tsdbUtil.c ==============================================================================================

// TSDBROW

#define TSDBROW_TS(ROW) (((ROW)->type == TSDBROW_ROW_FMT) ? (ROW)->pTSRow->ts : (ROW)->pBlockData->aTSKEY[(ROW)->iRow])

#define TSDBROW_VERSION(ROW) \

  (((ROW)->type == TSDBROW_ROW_FMT) ? (ROW)->version : (ROW)->pBlockData->aVersion[(ROW)->iRow])

#define TSDBROW_SVERSION(ROW)            ((ROW)->type == TSDBROW_ROW_FMT ? (ROW)->pTSRow->sver : -1)

#define TSDBROW_KEY(ROW)                 ((TSDBKEY){.version = TSDBROW_VERSION(ROW), .ts = TSDBROW_TS(ROW)})

#define tsdbRowFromTSRow(VERSION, TSROW) ((TSDBROW){.type = TSDBROW_ROW_FMT, .version = (VERSION), .pTSRow = (TSROW)})

#define tsdbRowFromBlockData(BLOCKDATA, IROW) \

  ((TSDBROW){.type = TSDBROW_COL_FMT, .pBlockData = (BLOCKDATA), .iRow = (IROW)})

#define TSDBROW_INIT_KEY(_ROW, _KEY)                             \

  {                                                              \

    if ((_ROW)->type == TSDBROW_ROW_FMT) {                       \

      _KEY.version = (_ROW)->version;                            \

      _KEY.ts = (_ROW)->pTSRow->ts;                              \

    } else {                                                     \

      _KEY.version = (_ROW)->pBlockData->aVersion[(_ROW)->iRow]; \

      _KEY.ts = (_ROW)->pBlockData->aTSKEY[(_ROW)->iRow];        \

    }                                                            \

  }

#define tColRowGetKey(_pBlock, _irow, _key)             \

  {                                                     \

    (_key)->ts = (_pBlock)->aTSKEY[(_irow)];            \

    (_key)->numOfPKs = 0;                               \

    if ((_pBlock)->nColData > 0) {                      \

      tColRowGetPrimaryKey((_pBlock), (_irow), (_key)); \

    }                                                   \

  }

void    tsdbRowGetColVal(TSDBROW *pRow, STSchema *pTSchema, int32_t iCol, SColVal *pColVal);

int32_t tsdbRowCompare(const void *p1, const void *p2);

int32_t tsdbRowCompareWithoutVersion(const void *p1, const void *p2);

int32_t tsdbRowKeyCmpr(const STsdbRowKey *key1, const STsdbRowKey *key2);

void    tsdbRowGetKey(TSDBROW *row, STsdbRowKey *key);

void    tColRowGetPrimaryKey(SBlockData *pBlock, int32_t irow, SRowKey *key);

// STSDBRowIter

int32_t  tsdbRowIterOpen(STSDBRowIter *pIter, TSDBROW *pRow, STSchema *pTSchema);

void     tsdbRowClose(STSDBRowIter *pIter);

SColVal *tsdbRowIterNext(STSDBRowIter *pIter);

// SRowMerger

int32_t tsdbRowMergerInit(SRowMerger *pMerger, STSchema *pSchema);

int32_t tsdbRowMergerAdd(SRowMerger *pMerger, TSDBROW *pRow, STSchema *pTSchema);

int32_t tsdbRowMergerGetRow(SRowMerger *pMerger, SRow **ppRow);

void    tsdbRowMergerClear(SRowMerger *pMerger);

void    tsdbRowMergerCleanup(SRowMerger *pMerger);

// TABLEID

int32_t tTABLEIDCmprFn(const void *p1, const void *p2);

// TSDBKEY

#define MIN_TSDBKEY(KEY1, KEY2) ((tsdbKeyCmprFn(&(KEY1), &(KEY2)) < 0) ? (KEY1) : (KEY2))

#define MAX_TSDBKEY(KEY1, KEY2) ((tsdbKeyCmprFn(&(KEY1), &(KEY2)) > 0) ? (KEY1) : (KEY2))

// SBlockCol

int32_t tPutBlockCol(SBuffer *buffer, const SBlockCol *pBlockCol, int32_t ver, uint32_t cmprAlg);

int32_t tGetBlockCol(SBufferReader *br, SBlockCol *pBlockCol, int32_t ver, uint32_t cmprAlg);

int32_t tBlockColCmprFn(const void *p1, const void *p2);

// SDataBlk

void    tDataBlkReset(SDataBlk *pBlock);

int32_t tPutDataBlk(uint8_t *p, void *ph);

int32_t tGetDataBlk(uint8_t *p, void *ph);

int32_t tDataBlkCmprFn(const void *p1, const void *p2);

bool    tDataBlkHasSma(SDataBlk *pDataBlk);

// SSttBlk

int32_t tPutSttBlk(uint8_t *p, void *ph);

int32_t tGetSttBlk(uint8_t *p, void *ph);

// SBlockIdx

int32_t tPutBlockIdx(uint8_t *p, void *ph);

int32_t tGetBlockIdx(uint8_t *p, void *ph);

int32_t tCmprBlockIdx(void const *lhs, void const *rhs);

int32_t tCmprBlockL(void const *lhs, void const *rhs);

// SBlockData

#define tBlockDataFirstRow(PBLOCKDATA)             tsdbRowFromBlockData(PBLOCKDATA, 0)

#define tBlockDataLastRow(PBLOCKDATA)              tsdbRowFromBlockData(PBLOCKDATA, (PBLOCKDATA)->nRow - 1)

#define tBlockDataFirstKey(PBLOCKDATA)             TSDBROW_KEY(&tBlockDataFirstRow(PBLOCKDATA))

#define tBlockDataLastKey(PBLOCKDATA)              TSDBROW_KEY(&tBlockDataLastRow(PBLOCKDATA))

#define tBlockDataGetColDataByIdx(PBLOCKDATA, IDX) (&(PBLOCKDATA)->aColData[IDX])

int32_t tBlockDataCreate(SBlockData *pBlockData);

void    tBlockDataDestroy(SBlockData *pBlockData);

int32_t tBlockDataInit(SBlockData *pBlockData, TABLEID *pId, STSchema *pTSchema, int16_t *aCid, int32_t nCid);

void    tBlockDataReset(SBlockData *pBlockData);

int32_t tBlockDataAppendRow(SBlockData *pBlockData, TSDBROW *pRow, STSchema *pTSchema, int64_t uid);

int32_t tBlockDataUpdateRow(SBlockData *pBlockData, TSDBROW *pRow, STSchema *pTSchema);

int32_t tBlockDataTryUpsertRow(SBlockData *pBlockData, TSDBROW *pRow, int64_t uid);

int32_t tBlockDataUpsertRow(SBlockData *pBlockData, TSDBROW *pRow, STSchema *pTSchema, int64_t uid);

void    tBlockDataClear(SBlockData *pBlockData);

int32_t tBlockDataCompress(SBlockData *bData, void *pCmprInfo, SBuffer *buffers, SBuffer *assist);

int32_t tBlockDataDecompress(SBufferReader *br, SBlockData *blockData, SBuffer *assist);

int32_t tBlockDataDecompressKeyPart(const SDiskDataHdr *hdr, SBufferReader *br, SBlockData *blockData, SBuffer *assist);

int32_t tBlockDataDecompressColData(const SDiskDataHdr *hdr, const SBlockCol *blockCol, SBufferReader *br,

                                    SBlockData *blockData, SBuffer *assist);

SColData *tBlockDataGetColData(SBlockData *pBlockData, int16_t cid);

int32_t   tBlockDataAddColData(SBlockData *pBlockData, int16_t cid, int8_t type, int8_t cflag, SColData **ppColData);

// SDiskDataHdr

int32_t tPutDiskDataHdr(SBuffer *buffer, const SDiskDataHdr *pHdr);

int32_t tGetDiskDataHdr(SBufferReader *br, SDiskDataHdr *pHdr);

// SDelIdx

int32_t tPutDelIdx(uint8_t *p, void *ph);

int32_t tGetDelIdx(uint8_t *p, void *ph);

int32_t tCmprDelIdx(void const *lhs, void const *rhs);

// SDelData

int32_t tPutDelData(uint8_t *p, void *ph);

int32_t tGetDelData(uint8_t *p, void *ph);

// SMapData

#define tMapDataInit() ((SMapData){0})

void    tMapDataReset(SMapData *pMapData);

void    tMapDataClear(SMapData *pMapData);

int32_t tMapDataPutItem(SMapData *pMapData, void *pItem, int32_t (*tPutItemFn)(uint8_t *, void *));

int32_t tMapDataCopy(SMapData *pFrom, SMapData *pTo);

void    tMapDataGetItemByIdx(SMapData *pMapData, int32_t idx, void *pItem, int32_t (*tGetItemFn)(uint8_t *, void *));

int32_t tMapDataSearch(SMapData *pMapData, void *pSearchItem, int32_t (*tGetItemFn)(uint8_t *, void *),

                       int32_t (*tItemCmprFn)(const void *, const void *), void *pItem);

int32_t tPutMapData(uint8_t *p, SMapData *pMapData);

int32_t tGetMapData(uint8_t *p, SMapData *pMapData, int32_t *decodedSize);

int32_t tMapDataToArray(SMapData *pMapData, int32_t itemSize, int32_t (*tGetItemFn)(uint8_t *, void *),

                        SArray **ppArray);

// other

int32_t tsdbKeyFid(TSKEY key, int32_t minutes, int8_t precision);

void    tsdbFidKeyRange(int32_t fid, int32_t minutes, int8_t precision, TSKEY *minKey, TSKEY *maxKey);

int32_t tsdbFidLevel(int32_t fid, STsdbKeepCfg *pKeepCfg, int64_t nowSec);

int32_t tsdbBuildDeleteSkyline(SArray *aDelData, int32_t sidx, int32_t eidx, SArray *aSkyline);

int32_t tPutColumnDataAgg(SBuffer *buffer, SColumnDataAgg *pColAgg);

int32_t tGetColumnDataAgg(SBufferReader *br, SColumnDataAgg *pColAgg);

int32_t tRowInfoCmprFn(const void *p1, const void *p2);

// tsdbMemTable ==============================================================================================

// SMemTable

int32_t  tsdbMemTableCreate(STsdb *pTsdb, SMemTable **ppMemTable);

void     tsdbMemTableDestroy(SMemTable *pMemTable, bool proactive);

STbData *tsdbGetTbDataFromMemTable(SMemTable *pMemTable, tb_uid_t suid, tb_uid_t uid);

int32_t  tsdbRefMemTable(SMemTable *pMemTable, SQueryNode *pQNode);

void     tsdbUnrefMemTable(SMemTable *pMemTable, SQueryNode *pNode, bool proactive);

// STbDataIter

int32_t tsdbTbDataIterCreate(STbData *pTbData, STsdbRowKey *pFrom, int8_t backward, STbDataIter **ppIter);

void   *tsdbTbDataIterDestroy(STbDataIter *pIter);

void    tsdbTbDataIterOpen(STbData *pTbData, STsdbRowKey *pFrom, int8_t backward, STbDataIter *pIter);

bool    tsdbTbDataIterNext(STbDataIter *pIter);

void    tsdbMemTableCountRows(SMemTable *pMemTable, SSHashObj *pTableMap, int64_t *rowsNum);

int32_t tsdbMemTableSaveToCache(SMemTable *pMemTable, void *func);

// STbData

int32_t tsdbGetNRowsInTbData(STbData *pTbData);

// tsdbFile.c ==============================================================================================

typedef enum { TSDB_HEAD_FILE = 0, TSDB_DATA_FILE, TSDB_LAST_FILE, TSDB_SMA_FILE } EDataFileT;

bool    tsdbDelFileIsSame(SDelFile *pDelFile1, SDelFile *pDelFile2);

int32_t tPutHeadFile(uint8_t *p, SHeadFile *pHeadFile);

int32_t tPutDataFile(uint8_t *p, SDataFile *pDataFile);

int32_t tPutSttFile(uint8_t *p, SSttFile *pSttFile);

int32_t tPutSmaFile(uint8_t *p, SSmaFile *pSmaFile);

int32_t tPutDelFile(uint8_t *p, SDelFile *pDelFile);

int32_t tGetDelFile(uint8_t *p, SDelFile *pDelFile);

int32_t tPutDFileSet(uint8_t *p, SDFileSet *pSet);

int32_t tGetDFileSet(uint8_t *p, SDFileSet *pSet);

void tsdbHeadFileName(STsdb *pTsdb, SDiskID did, int32_t fid, SHeadFile *pHeadF, char fname[]);

void tsdbDataFileName(STsdb *pTsdb, SDiskID did, int32_t fid, SDataFile *pDataF, char fname[]);

void tsdbSttFileName(STsdb *pTsdb, SDiskID did, int32_t fid, SSttFile *pSttF, char fname[]);

void tsdbSmaFileName(STsdb *pTsdb, SDiskID did, int32_t fid, SSmaFile *pSmaF, char fname[]);

// SDelFile

void tsdbDelFileName(STsdb *pTsdb, SDelFile *pFile, char fname[]);

// tsdbFS.c ==============================================================================================

int32_t tsdbFSOpen(STsdb *pTsdb, int8_t rollback);

int32_t tsdbFSClose(STsdb *pTsdb);

void    tsdbGetCurrentFName(STsdb *pTsdb, char *current, char *current_t);

// tsdbReaderWriter.c ==============================================================================================

// SDataFReader

int32_t tsdbDataFReaderOpen(SDataFReader **ppReader, STsdb *pTsdb, SDFileSet *pSet);

void    tsdbDataFReaderClose(SDataFReader **ppReader);

int32_t tsdbReadBlockIdx(SDataFReader *pReader, SArray *aBlockIdx);

int32_t tsdbReadDataBlk(SDataFReader *pReader, SBlockIdx *pBlockIdx, SMapData *mDataBlk);

int32_t tsdbReadSttBlk(SDataFReader *pReader, int32_t iStt, SArray *aSttBlk);

// SDelFReader

int32_t tsdbDelFReaderOpen(SDelFReader **ppReader, SDelFile *pFile, STsdb *pTsdb);

void    tsdbDelFReaderClose(SDelFReader **ppReader);

int32_t tsdbReadDelDatav1(SDelFReader *pReader, SDelIdx *pDelIdx, SArray *aDelData, int64_t maxVer);

int32_t tsdbReadDelData(SDelFReader *pReader, SDelIdx *pDelIdx, SArray *aDelData);

int32_t tsdbReadDelIdx(SDelFReader *pReader, SArray *aDelIdx);

// tsdbRead.c ==============================================================================================

int32_t tsdbTakeReadSnap2(STsdbReader *pReader, _query_reseek_func_t reseek, STsdbReadSnap **ppSnap, const char *id);

void    tsdbUntakeReadSnap2(STsdbReader *pReader, STsdbReadSnap *pSnap, bool proactive);

int32_t tsdbGetTableSchema(SMeta *pMeta, int64_t uid, STSchema **pSchema, int64_t *suid,

                           SSchemaWrapper **pSchemaWrapper);

// tsdbMerge.c ==============================================================================================

typedef struct {

  STsdb  *tsdb;

  int32_t fid;

} SMergeArg;

int32_t tsdbMerge(void *arg);

// tsdbDataIter.c ==============================================================================================

#define TSDB_MEM_TABLE_DATA_ITER 0

#define TSDB_DATA_FILE_DATA_ITER 1

#define TSDB_STT_FILE_DATA_ITER  2

#define TSDB_TOMB_FILE_DATA_ITER 3

#define TSDB_FILTER_FLAG_BY_VERSION           0x1

#define TSDB_FILTER_FLAG_BY_TABLEID           0x2

#define TSDB_FILTER_FLAG_IGNORE_DROPPED_TABLE 0x4

#define TSDB_RBTN_TO_DATA_ITER(pNode) ((STsdbDataIter2 *)(((char *)pNode) - offsetof(STsdbDataIter2, rbtn)))

/* open */

int32_t tsdbOpenDataFileDataIter(SDataFReader *pReader, STsdbDataIter2 **ppIter);

int32_t tsdbOpenSttFileDataIter(SDataFReader *pReader, int32_t iStt, STsdbDataIter2 **ppIter);

int32_t tsdbOpenTombFileDataIter(SDelFReader *pReader, STsdbDataIter2 **ppIter);

/* close */

void tsdbCloseDataIter2(STsdbDataIter2 *pIter);

/* cmpr */

int32_t tsdbDataIterCmprFn(const SRBTreeNode *pNode1, const SRBTreeNode *pNode2);

/* next */

int32_t tsdbDataIterNext2(STsdbDataIter2 *pIter, STsdbFilterInfo *pFilterInfo);

// structs =======================

struct STsdbFS {

  SDelFile *pDelFile;

  SArray   *aDFileSet;  // SArray<SDFileSet>

};

typedef struct {

#ifdef USE_ROCKSDB

  rocksdb_t                           *db;

  rocksdb_comparator_t                *my_comparator;

  rocksdb_block_based_table_options_t *tableoptions;

  rocksdb_options_t                   *options;

  rocksdb_flushoptions_t              *flushoptions;

  rocksdb_writeoptions_t              *writeoptions;

  rocksdb_readoptions_t               *readoptions;

  rocksdb_writebatch_t                *writebatch;

  TdThreadMutex                        writeBatchMutex;

#endif

  int32_t                              sver;

  tb_uid_t                             suid;

  tb_uid_t                             uid;

  STSchema                            *pTSchema;

  SArray                              *ctxArray;

} SRocksCache;

typedef struct {

  STsdb *pTsdb;

  int    flush_count;

} SCacheFlushState;

typedef struct SCompMonitor SCompMonitor;

typedef struct SSsMigrateMonitor SSsMigrateMonitor;

struct STsdb {

  char                *path;

  SVnode              *pVnode;

  char                 name[VNODE_TSDB_NAME_LEN];

  STsdbKeepCfg         keepCfg;

  TdThreadMutex        mutex;

  bool                 bgTaskDisabled;

  SMemTable           *mem;

  SMemTable           *imem;

  STsdbFS              fs;  // old

  SLRUCache           *lruCache;

  TdThreadMutex        lruMutex;

  SLRUCache           *biCache;

  TdThreadMutex        biMutex;

  SLRUCache           *bCache;

  TdThreadMutex        bMutex;

  SLRUCache           *pgCache;

  TdThreadMutex        pgMutex;

  struct STFileSystem *pFS;  // new

  SRocksCache          rCache;

  SCompMonitor        *pCompMonitor;

  SSsMigrateMonitor   *pSsMigrateMonitor;

  struct {

    SVHashTable *ht;

    SArray      *arr;

  } *commitInfo;

};

struct TSDBKEY {

  int64_t version;

  TSKEY   ts;

};

typedef struct SMemSkipListNode SMemSkipListNode;

typedef struct SMemSkipList {

  int64_t           size;

  uint32_t          seed;

  int8_t            maxLevel;

  int8_t            level;

  SMemSkipListNode *pHead;

  SMemSkipListNode *pTail;

} SMemSkipList;

struct STbData {

  tb_uid_t     suid;

  tb_uid_t     uid;

  TSKEY        minKey;

  TSKEY        maxKey;

  SRWLatch     lock;

  SDelData    *pHead;

  SDelData    *pTail;

  SMemSkipList sl;

  STbData     *next;

  SRBTreeNode  rbtn[1];

};

struct SMemTable {

  SRWLatch         latch;

  STsdb           *pTsdb;

  SVBufPool       *pPool;

  volatile int32_t nRef;

  int64_t          minVer;

  int64_t          maxVer;

  TSKEY            minKey;

  TSKEY            maxKey;

  int64_t          nRow;

  int64_t          nDel;

  int32_t          nTbData;

  int32_t          nBucket;

  STbData        **aBucket;

  SRBTree          tbDataTree[1];

};

struct TSDBROW {

  int8_t type;  // TSDBROW_ROW_FMT for row from tsRow, TSDBROW_COL_FMT for row from block data

  union {

    struct {

      int64_t version;

      SRow   *pTSRow;

    };

    struct {

      SBlockData *pBlockData;

      int32_t     iRow;

    };

  };

};

struct SMemSkipListNode {

  int8_t            level;

  TSDBROW           row;

  SMemSkipListNode *forwards[0];

};

struct STsdbRowKey {

  SRowKey key;

  int64_t version;

};

struct SBlockIdx {

  int64_t suid;

  int64_t uid;

  int64_t offset;

  int64_t size;

};

struct SMapData {

  int32_t  nItem;

  int32_t  nData;

  int32_t *aOffset;

  uint8_t *pData;

};

struct SBlockCol {

  int16_t  cid;

  int8_t   type;

  int8_t   cflag;

  int8_t   flag;      // HAS_NONE|HAS_NULL|HAS_VALUE

  int32_t  szOrigin;  // original column value size (only save for variant data type)

  int32_t  szBitmap;  // bitmap size, 0 only for flag == HAS_VAL

  int32_t  szOffset;  // offset size, 0 only for non-variant-length type

  int32_t  szValue;   // value size, 0 when flag == (HAS_NULL | HAS_NONE)

  int32_t  offset;

  uint32_t alg;

};

struct SBlockInfo {

  int64_t offset;  // block data offset

  int32_t szBlock;

  int32_t szKey;

};

struct SSmaInfo {

  int64_t offset;

  int32_t size;

};

struct SBlkInfo {

  int64_t minUid;

  int64_t maxUid;

  TSKEY   minKey;

  TSKEY   maxKey;

  int64_t minVer;

  int64_t maxVer;

  TSDBKEY minTKey;

  TSDBKEY maxTKey;

};

struct SDataBlk {

  TSDBKEY    minKey;

  TSDBKEY    maxKey;

  int64_t    minVer;

  int64_t    maxVer;

  int32_t    nRow;

  int8_t     hasDup;

  int8_t     nSubBlock;

  SBlockInfo aSubBlock[1];

  SSmaInfo   smaInfo;

};

struct SSttBlk {

  int64_t    suid;

  int64_t    minUid;

  int64_t    maxUid;

  TSKEY      minKey;

  TSKEY      maxKey;

  int64_t    minVer;

  int64_t    maxVer;

  int32_t    nRow;

  SBlockInfo bInfo;

};

// (SBlockData){.suid = 0, .uid = 0}: block data not initialized

// (SBlockData){.suid = suid, .uid = uid}: block data for ONE child table int .data file

// (SBlockData){.suid = suid, .uid = 0}: block data for N child tables int .last file

// (SBlockData){.suid = 0, .uid = uid}: block data for 1 normal table int .last/.data file

struct SBlockData {

  int64_t   suid;      // 0 means normal table block data, otherwise child table block data

  int64_t   uid;       // 0 means block data in .last file, otherwise in .data file

  int32_t   nRow;      // number of rows

  int64_t  *aUid;      // uids of each row, only exist in block data in .last file (uid == 0)

  int64_t  *aVersion;  // versions of each row

  TSKEY    *aTSKEY;    // timestamp of each row

  int32_t   nColData;

  SColData *aColData;

};

struct TABLEID {

  tb_uid_t suid;

  tb_uid_t uid;

};

struct STbDataIter {

  STbData          *pTbData;

  int8_t            backward;

  SMemSkipListNode *pNode;

  TSDBROW          *pRow;

  TSDBROW           row;

};

struct SDelData {

  int64_t   version;

  TSKEY     sKey;

  TSKEY     eKey;

  SDelData *pNext;

};

struct SDelIdx {

  tb_uid_t suid;

  tb_uid_t uid;

  int64_t  offset;

  int64_t  size;

};

struct SDiskDataHdr {

  uint32_t delimiter;

  uint32_t fmtVer;

  int64_t  suid;

  int64_t  uid;

  int32_t  szUid;

  int32_t  szVer;

  int32_t  szKey;

  int32_t  szBlkCol;

  int32_t  nRow;

  uint32_t cmprAlg;

  // fmtVer == 1

  int8_t    numOfPKs;

  SBlockCol primaryBlockCols[TD_MAX_PK_COLS];

};

struct SDelFile {

  volatile int32_t nRef;

  int64_t commitID;

  int64_t size;

  int64_t offset;

};

struct SHeadFile {

  volatile int32_t nRef;

  int64_t commitID;

  int64_t size;

  int64_t offset;

};

struct SDataFile {

  volatile int32_t nRef;

  int64_t commitID;

  int64_t size;

};

struct SSttFile {

  volatile int32_t nRef;

  int64_t commitID;

  int64_t size;

  int64_t offset;

};

struct SSmaFile {

  volatile int32_t nRef;

  int64_t commitID;

  int64_t size;

};

struct SDFileSet {

  SDiskID    diskId;

  int32_t    fid;

  SHeadFile *pHeadF;

  SDataFile *pDataF;

  SSmaFile  *pSmaF;

  uint8_t    nSttF;

  SSttFile  *aSttF[TSDB_STT_TRIGGER_ARRAY_SIZE];

};

struct STSDBRowIter {

  TSDBROW *pRow;

  union {

    SRowIter *pIter;

    struct {

      int32_t iColData;

      SColVal cv;

    };

  };

};

struct SRowMerger {

  STSchema *pTSchema;

  int64_t   version;

  SArray   *pArray;  // SArray<SColVal>

};

typedef struct {

  char       *path;

  int32_t     szPage;

  int32_t     flag;

  TdFilePtr   pFD;

  int64_t     pgno;

  uint8_t    *pBuf;

  int64_t     szFile;

  STsdb      *pTsdb;

  const char *objName;

  uint8_t     ssFile;

  int32_t     lcn;

  int32_t     fid;

  int64_t     cid;

  int64_t     blkno;

} STsdbFD;

struct SDelFWriter {

  STsdb   *pTsdb;

  SDelFile fDel;

  STsdbFD *pWriteH;

  uint8_t *aBuf[1];

};

#include "tarray2.h"

typedef struct STFileSet STFileSet;

typedef TARRAY2(STFileSet *) TFileSetArray;

// fset range

typedef struct STFileSetRange STFileSetRange;

typedef TARRAY2(STFileSetRange *) TFileSetRangeArray;  // disjoint ranges

void tsdbTFileSetRangeClear(STFileSetRange **fsr);

void tsdbTFileSetRangeArrayDestroy(TFileSetRangeArray **ppArr);

// fset partition

enum {

  TSDB_FSET_RANGE_TYP_HEAD = 0,

  TSDB_FSET_RANGE_TYP_DATA,

  TSDB_FSET_RANGE_TYP_SMA,

  TSDB_FSET_RANGE_TYP_TOMB,

  TSDB_FSET_RANGE_TYP_STT,

  TSDB_FSET_RANGE_TYP_MAX,

};

typedef TARRAY2(SVersionRange) SVerRangeList;

struct STsdbFSetPartition {

  int64_t       fid;

  int8_t        stat;

  SVerRangeList verRanges[TSDB_FSET_RANGE_TYP_MAX];

};

typedef struct STsdbFSetPartition STsdbFSetPartition;

typedef TARRAY2(STsdbFSetPartition *) STsdbFSetPartList;

STsdbFSetPartList *tsdbFSetPartListCreate();

void               tsdbFSetPartListDestroy(STsdbFSetPartList **ppList);

int32_t            tDeserializeTsdbFSetPartList(void *buf, int32_t bufLen, STsdbFSetPartList *pList);

int32_t            tsdbFSetPartListToRangeDiff(STsdbFSetPartList *pList, TFileSetRangeArray **ppRanges);

// snap rep format

typedef enum ETsdbRepFmt {

  TSDB_SNAP_REP_FMT_DEFAULT = 0,

  TSDB_SNAP_REP_FMT_RAW,

  TSDB_SNAP_REP_FMT_HYBRID,

} ETsdbRepFmt;

typedef struct STsdbRepOpts {

  ETsdbRepFmt format;

} STsdbRepOpts;

int32_t tSerializeTsdbRepOpts(void *buf, int32_t bufLen, STsdbRepOpts *pInfo);

int32_t tDeserializeTsdbRepOpts(void *buf, int32_t bufLen, STsdbRepOpts *pInfo);

// snap read

struct STsdbReadSnap {

  SMemTable     *pMem;

  SQueryNode    *pNode;

  SMemTable     *pIMem;

  SQueryNode    *pINode;

  TFileSetArray *pfSetArray;

};

struct SDataFWriter {

  STsdb    *pTsdb;

  SDFileSet wSet;

  STsdbFD *pHeadFD;

  STsdbFD *pDataFD;

  STsdbFD *pSmaFD;

  STsdbFD *pSttFD;

  SHeadFile fHead;

  SDataFile fData;

  SSmaFile  fSma;

  SSttFile  fStt[TSDB_STT_TRIGGER_ARRAY_SIZE];

  uint8_t *aBuf[4];

};

struct SDataFReader {

  STsdb     *pTsdb;

  SDFileSet *pSet;

  STsdbFD   *pHeadFD;

  STsdbFD   *pDataFD;

  STsdbFD   *pSmaFD;

  STsdbFD   *aSttFD[TSDB_STT_TRIGGER_ARRAY_SIZE];

  uint8_t   *aBuf[3];

};

// NOTE: do NOT change the order of the fields

typedef struct {

  int64_t suid;

  int64_t uid;

  TSDBROW row;

} SRowInfo;

typedef struct SSttBlockLoadCostInfo {

  int64_t loadBlocks;

  int64_t loadStatisBlocks;

  double  blockElapsedTime;

  double  statisElapsedTime;

} SSttBlockLoadCostInfo;

typedef struct SBlockDataInfo {

  SBlockData data;

  bool       pin;

  int32_t    sttBlockIndex;

} SBlockDataInfo;

// todo: move away

typedef struct {

  SArray *pUid;

  SArray *pFirstTs;

  SArray *pLastTs;

  SArray *pCount;

  SArray *pFirstKey;

  SArray *pLastKey;

} SSttTableRowsInfo;

typedef struct SSttBlockLoadInfo {

  SBlockDataInfo        blockData[2];  // buffered block data

  SArray               *aSttBlk;

  int32_t               currentLoadBlockIndex;

  STSchema             *pSchema;

  int16_t              *colIds;

  int32_t               numOfCols;

  bool                  checkRemainingRow;  // todo: no assign value?

  bool                  isLast;

  bool                  sttBlockLoaded;

  SSttTableRowsInfo     info;

  SSttBlockLoadCostInfo cost;

} SSttBlockLoadInfo;

typedef struct SMergeTree {

  int8_t      backward;

  SRBTree     rbt;

  SLDataIter *pIter;

  SLDataIter *pPinnedBlockIter;

  const char *idStr;

  bool        ignoreEarlierTs;

} SMergeTree;

typedef struct {

  int64_t   suid;

  int64_t   uid;

  STSchema *pTSchema;

} SSkmInfo;

struct SDiskCol {

  SBlockCol      bCol;

  const uint8_t *pBit;

  const uint8_t *pOff;

  const uint8_t *pVal;

  SColumnDataAgg agg;

};

struct SDiskData {

  SDiskDataHdr   hdr;

  const uint8_t *pUid;

  const uint8_t *pVer;

  const uint8_t *pKey;

  SArray        *aDiskCol;  // SArray<SDiskCol>

};

struct SDiskDataBuilder {

  int64_t      suid;

  int64_t      uid;

  int32_t      nRow;

  uint8_t      cmprAlg;

  uint8_t      calcSma;

  SCompressor *pUidC;

  SCompressor *pVerC;

  SCompressor *pKeyC;

  int32_t      nBuilder;

  SArray      *aBuilder;  // SArray<SDiskColBuilder>

  uint8_t     *aBuf[2];

  SDiskData    dd;

  SBlkInfo     bi;

};

struct SLDataIter {

  SRBTreeNode            node;

  SSttBlk               *pSttBlk;

  int64_t                cid;  // for debug purpose

  int8_t                 backward;

  int32_t                iSttBlk;

  int32_t                iRow;

  SRowInfo               rInfo;

  uint64_t               uid;

  STimeWindow            timeWindow;

  SVersionRange          verRange;

  SSttBlockLoadInfo     *pBlockLoadInfo;

  SRowKey               *pStartRowKey;  // current row key

  bool                   ignoreEarlierTs;

  struct SSttFileReader *pReader;

};

#define tMergeTreeGetRow(_t) (&((_t)->pIter->rInfo.row))

struct SSttFileReader;

typedef int32_t (*_load_tomb_fn)(STsdbReader *pReader, struct SSttFileReader *pSttFileReader,

                                 SSttBlockLoadInfo *pLoadInfo);

typedef struct SMergeTreeConf {

  int8_t        backward;

  STsdb        *pTsdb;

  uint64_t      suid;

  uint64_t      uid;

  STimeWindow   timewindow;

  SVersionRange verRange;

  bool          strictTimeRange;

  SArray       *pSttFileBlockIterArray;

  void         *pCurrentFileset;

  STSchema     *pSchema;

  int16_t      *pCols;

  int32_t       numOfCols;

  SRowKey      *pCurRowKey;

  _load_tomb_fn loadTombFn;

  void         *pReader;

  void         *idstr;

  bool          rspRows;  // response the rows in stt-file, if possible

} SMergeTreeConf;

typedef struct SSttDataInfoForTable {

  SArray *pKeyRangeList;

  int64_t numOfRows;

} SSttDataInfoForTable;

int32_t tMergeTreeOpen2(SMergeTree *pMTree, SMergeTreeConf *pConf, SSttDataInfoForTable *pTableInfo);

void    tMergeTreeAddIter(SMergeTree *pMTree, SLDataIter *pIter);

int32_t tMergeTreeNext(SMergeTree *pMTree, bool *pHasNext);

void    tMergeTreePinSttBlock(SMergeTree *pMTree);

void    tMergeTreeUnpinSttBlock(SMergeTree *pMTree);

bool    tMergeTreeIgnoreEarlierTs(SMergeTree *pMTree);

void    tMergeTreeClose(SMergeTree *pMTree);

int32_t tCreateSttBlockLoadInfo(STSchema *pSchema, int16_t *colList, int32_t numOfCols, SSttBlockLoadInfo **pInfo);

void    destroySttBlockLoadInfo(SSttBlockLoadInfo *pLoadInfo);

void    destroySttBlockReader(SArray *pLDataIterArray, SSttBlockLoadCostInfo *pLoadCost);

// tsdbCache ==============================================================================================

typedef enum {

  READER_EXEC_DATA = 0x1,

  READER_EXEC_ROWS = 0x2,

} EExecMode;

#define LAST_COL_VERSION_1 (0x1)  // add primary key, version

#define LAST_COL_VERSION_2 (0x2)  // add cache status

#define LAST_COL_VERSION   LAST_COL_VERSION_2

typedef enum {

  TSDB_LAST_CACHE_VALID = 0,  // last_cache has valid data

  TSDB_LAST_CACHE_NO_CACHE,   // last_cache has no data, but tsdb may have data

} ELastCacheStatus;

typedef struct {

  SRowKey          rowKey;

  int8_t           dirty;

  SColVal          colVal;

  ELastCacheStatus cacheStatus;

} SLastCol;

typedef struct {

  int8_t      lflag;

  STsdbRowKey tsdbRowKey;

  SColVal     colVal;

} SLastUpdateCtx;

int32_t tsdbOpenCache(STsdb *pTsdb);

void    tsdbCloseCache(STsdb *pTsdb);

int32_t tsdbCacheRowFormatUpdate(STsdb *pTsdb, tb_uid_t suid, tb_uid_t uid, int64_t version, int32_t nRow, SRow **aRow);

int32_t tsdbCacheColFormatUpdate(STsdb *pTsdb, tb_uid_t suid, tb_uid_t uid, SBlockData *pBlockData);

int32_t tsdbCacheDel(STsdb *pTsdb, tb_uid_t suid, tb_uid_t uid, TSKEY sKey, TSKEY eKey);

int32_t tsdbCacheInsertLast(SLRUCache *pCache, tb_uid_t uid, TSDBROW *row, STsdb *pTsdb);

int32_t tsdbCacheInsertLastrow(SLRUCache *pCache, STsdb *pTsdb, tb_uid_t uid, TSDBROW *row, bool dup);

void    tsdbCacheRelease(SLRUCache *pCache, LRUHandle *h);

int32_t tsdbCacheGetBlockIdx(SLRUCache *pCache, SDataFReader *pFileReader, LRUHandle **handle);

int32_t tsdbBICacheRelease(SLRUCache *pCache, LRUHandle *h);

int32_t tsdbCacheGetBlockSs(SLRUCache *pCache, STsdbFD *pFD, LRUHandle **handle);

int32_t tsdbCacheGetPageSs(SLRUCache *pCache, STsdbFD *pFD, int64_t pgno, LRUHandle **handle);

void    tsdbCacheSetPageSs(SLRUCache *pCache, STsdbFD *pFD, int64_t pgno, uint8_t *pPage);

int32_t tsdbCacheDeleteLastrow(SLRUCache *pCache, tb_uid_t uid, TSKEY eKey);

int32_t tsdbCacheDeleteLast(SLRUCache *pCache, tb_uid_t uid, TSKEY eKey);

int32_t tsdbCacheDelete(SLRUCache *pCache, tb_uid_t uid, TSKEY eKey);

int32_t tsdbGetFsSize(STsdb *tsdb, SDbSizeStatisInfo *pInfo);

// ========== inline functions ==========

static FORCE_INLINE int32_t tsdbKeyCmprFn(const void *p1, const void *p2) {

  TSDBKEY *pKey1 = (TSDBKEY *)p1;

  TSDBKEY *pKey2 = (TSDBKEY *)p2;

  if (pKey1->ts < pKey2->ts) {

    return -1;

  } else if (pKey1->ts > pKey2->ts) {

    return 1;

  }

  if (pKey1->version < pKey2->version) {

    return -1;

  } else if (pKey1->version > pKey2->version) {

    return 1;

  }

  return 0;

}

// #define SL_NODE_FORWARD(n, l)  ((n)->forwards[l])

// #define SL_NODE_BACKWARD(n, l) ((n)->forwards[(n)->level + (l)])

static FORCE_INLINE TSDBROW *tsdbTbDataIterGet(STbDataIter *pIter) {

  }

    }

  } else {

    }

  }

}

typedef struct {

  int64_t  suid;

  int64_t  uid;

  SDelData delData;

} SDelInfo;

struct STsdbDataIter2 {

  STsdbDataIter2 *next;

  SRBTreeNode     rbtn;

  int32_t  type;

  SRowInfo rowInfo;

  SDelInfo delInfo;

  union {

    // TSDB_MEM_TABLE_DATA_ITER

    struct {

      SMemTable *pMemTable;

    } mIter;

    // TSDB_DATA_FILE_DATA_ITER

    struct {

      SDataFReader *pReader;

      SArray       *aBlockIdx;  // SArray<SBlockIdx>