tscUtil.h 10.7 KB
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/*
 * 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 TDENGINE_TSCUTIL_H
#define TDENGINE_TSCUTIL_H

#ifdef __cplusplus
extern "C" {
#endif

/*
 * @date   2018/09/30
 */
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#include "os.h"
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#include "textbuffer.h"
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#include "tscSecondaryMerge.h"
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#include "tsclient.h"
#include "tsdb.h"
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#define UTIL_METER_IS_SUPERTABLE(metaInfo) \
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  (((metaInfo)->pMeterMeta != NULL) && ((metaInfo)->pMeterMeta->meterType == TSDB_METER_METRIC))
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#define UTIL_METER_IS_NOMRAL_METER(metaInfo) (!(UTIL_METER_IS_SUPERTABLE(metaInfo)))
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#define UTIL_METER_IS_CREATE_FROM_METRIC(metaInfo) \
  (((metaInfo)->pMeterMeta != NULL) && ((metaInfo)->pMeterMeta->meterType == TSDB_METER_MTABLE))
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#define TSDB_COL_IS_TAG(f) (((f)&TSDB_COL_TAG) != 0)

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typedef struct SParsedColElem {
  int16_t colIndex;
  int16_t offset;
} SParsedColElem;

typedef struct SParsedDataColInfo {
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  int16_t        numOfCols;
  int16_t        numOfAssignedCols;
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  SParsedColElem elems[TSDB_MAX_COLUMNS];
  bool           hasVal[TSDB_MAX_COLUMNS];
} SParsedDataColInfo;

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typedef struct SJoinSubquerySupporter {
  SSubqueryState* pState;
  SSqlObj*        pObj;           // parent SqlObj
  int32_t         subqueryIndex;  // index of sub query
  int64_t         interval;       // interval time
  SLimitVal       limit;          // limit info
  uint64_t        uid;            // query meter uid
  SColumnBaseInfo colList;        // previous query information
  SSqlExprInfo    exprsInfo;
  SFieldInfo      fieldsInfo;
  STagCond        tagCond;
  SSqlGroupbyExpr groupbyExpr;
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  struct STSBuf*  pTSBuf;          // the TSBuf struct that holds the compressed timestamp array
  FILE*           f;               // temporary file in order to create TSBuf
  char            path[PATH_MAX];  // temporary file path
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} SJoinSubquerySupporter;

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int32_t tscCreateDataBlock(size_t initialSize, int32_t rowSize, int32_t startOffset, const char* name,
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                           SMeterMeta* pMeterMeta, STableDataBlocks** dataBlocks);
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void    tscAppendDataBlock(SDataBlockList* pList, STableDataBlocks* pBlocks);
void    tscDestroyDataBlock(STableDataBlocks* pDataBlock);

SParamInfo* tscAddParamToDataBlock(STableDataBlocks* pDataBlock, char type, uint8_t timePrec, short bytes,
                                   uint32_t offset);

SDataBlockList* tscCreateBlockArrayList();

void*   tscDestroyBlockArrayList(SDataBlockList* pList);
int32_t tscCopyDataBlockToPayload(SSqlObj* pSql, STableDataBlocks* pDataBlock);
void    tscFreeUnusedDataBlocks(SDataBlockList* pList);
int32_t tscMergeTableDataBlocks(SSqlObj* pSql, SDataBlockList* pDataList);
int32_t tscGetDataBlockFromList(void* pHashList, SDataBlockList* pDataBlockList, int64_t id, int32_t size,
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                                int32_t startOffset, int32_t rowSize, const char* tableId, SMeterMeta* pMeterMeta,
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                                STableDataBlocks** dataBlocks);
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SVnodeSidList*    tscGetVnodeSidList(SMetricMeta* pMetricmeta, int32_t vnodeIdx);
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SMeterSidExtInfo* tscGetMeterSidInfo(SVnodeSidList* pSidList, int32_t idx);

/**
 *
 * for the projection query on metric or point interpolation query on metric,
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 * we iterate all the meters, instead of invoke query on all qualified meters simultaneously.
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 *
 * @param pSql  sql object
 * @return
 */
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bool tscIsPointInterpQuery(SQueryInfo* pQueryInfo);
bool tscIsTWAQuery(SQueryInfo* pQueryInfo);
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bool tscProjectionQueryOnSTable(SQueryInfo *pQueryInfo, int32_t tableIndex);
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bool tscProjectionQueryOnTable(SQueryInfo* pQueryInfo);
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bool tscIsTwoStageMergeMetricQuery(SQueryInfo* pQueryInfo, int32_t tableIndex);
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bool tscQueryOnMetric(SSqlCmd* pCmd);
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bool tscQueryMetricTags(SQueryInfo* pQueryInfo);
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bool tscIsSelectivityWithTagQuery(SSqlCmd* pCmd);

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void tscAddSpecialColumnForSelect(SQueryInfo* pQueryInfo, int32_t outputColIndex, int16_t functionId, SColumnIndex* pIndex,
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                                  SSchema* pColSchema, int16_t isTag);
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void addRequiredTagColumn(SQueryInfo* pQueryInfo, int32_t tagColIndex, int32_t tableIndex);
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int32_t setMeterID(SMeterMetaInfo* pMeterMetaInfo, SSQLToken* pzTableName, SSqlObj* pSql);
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void    tscClearInterpInfo(SQueryInfo* pQueryInfo);
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bool tscIsInsertOrImportData(char* sqlstr);

/* use for keep current db info temporarily, for handle table with db prefix */
void tscGetDBInfoFromMeterId(char* meterId, char* db);

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int tscAllocPayload(SSqlCmd* pCmd, int size);
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void tscFieldInfoSetValFromSchema(SFieldInfo* pFieldInfo, int32_t index, SSchema* pSchema);
void tscFieldInfoSetValFromField(SFieldInfo* pFieldInfo, int32_t index, TAOS_FIELD* pField);
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void tscFieldInfoSetValue(SFieldInfo* pFieldInfo, int32_t index, int8_t type, const char* name, int16_t bytes);
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void tscFieldInfoUpdateVisible(SFieldInfo* pFieldInfo, int32_t index, bool visible);
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void tscFieldInfoCalOffset(SQueryInfo* pQueryInfo);
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void tscFieldInfoUpdateOffsetForInterResult(SQueryInfo* pQueryInfo);
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void tscFieldInfoCopy(SFieldInfo* src, SFieldInfo* dst, const int32_t* indexList, int32_t size);
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void tscFieldInfoCopyAll(SFieldInfo* dst, SFieldInfo* src);
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TAOS_FIELD* tscFieldInfoGetField(SQueryInfo* pQueryInfo, int32_t index);
int16_t     tscFieldInfoGetOffset(SQueryInfo* pQueryInfo, int32_t index);
int32_t     tscGetResRowLength(SQueryInfo* pQueryInfo);
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void        tscClearFieldInfo(SFieldInfo* pFieldInfo);
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int32_t tscNumOfFields(SQueryInfo* pQueryInfo);
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int32_t tscFieldInfoCompare(SFieldInfo* pFieldInfo1, SFieldInfo* pFieldInfo2);
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void addExprParams(SSqlExpr* pExpr, char* argument, int32_t type, int32_t bytes, int16_t tableIndex);
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SSqlExpr* tscSqlExprInsert(SQueryInfo* pQueryInfo, int32_t index, int16_t functionId, SColumnIndex* pColIndex, int16_t type,
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                           int16_t size, int16_t interSize);
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SSqlExpr* tscSqlExprInsertEmpty(SQueryInfo* pQueryInfo, int32_t index, int16_t functionId);
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SSqlExpr* tscSqlExprUpdate(SQueryInfo* pQueryInfo, int32_t index, int16_t functionId, int16_t srcColumnIndex, int16_t type,
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                           int16_t size);

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SSqlExpr* tscSqlExprGet(SQueryInfo* pQueryInfo, int32_t index);
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void      tscSqlExprCopy(SSqlExprInfo* dst, const SSqlExprInfo* src, uint64_t uid);
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SColumnBase* tscColumnBaseInfoInsert(SQueryInfo* pQueryInfo, SColumnIndex* colIndex);
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void         tscColumnFilterInfoCopy(SColumnFilterInfo* dst, const SColumnFilterInfo* src);
void         tscColumnBaseCopy(SColumnBase* dst, const SColumnBase* src);
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void         tscColumnBaseInfoCopy(SColumnBaseInfo* dst, const SColumnBaseInfo* src, int16_t tableIndex);
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SColumnBase* tscColumnBaseInfoGet(SColumnBaseInfo* pColumnBaseInfo, int32_t index);
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void         tscColumnBaseInfoUpdateTableIndex(SColumnBaseInfo* pColList, int16_t tableIndex);
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void tscColumnBaseInfoReserve(SColumnBaseInfo* pColumnBaseInfo, int32_t size);
void tscColumnBaseInfoDestroy(SColumnBaseInfo* pColumnBaseInfo);
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int32_t tscValidateName(SSQLToken* pToken);

void tscIncStreamExecutionCount(void* pStream);

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bool tscValidateColumnId(SMeterMetaInfo* pMeterMetaInfo, int32_t colId);
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// get starter position of metric query condition (query on tags) in SSqlCmd.payload
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SCond* tsGetMetricQueryCondPos(STagCond* pCond, uint64_t tableIndex);
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void   tsSetMetricQueryCond(STagCond* pTagCond, uint64_t uid, const char* str);
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void tscTagCondCopy(STagCond* dest, const STagCond* src);
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void tscTagCondRelease(STagCond* pCond);

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void tscGetSrcColumnInfo(SSrcColumnInfo* pColInfo, SQueryInfo* pQueryInfo);
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void tscSetFreeHeatBeat(STscObj* pObj);
bool tscShouldFreeHeatBeat(SSqlObj* pHb);
void tscCleanSqlCmd(SSqlCmd* pCmd);
bool tscShouldFreeAsyncSqlObj(SSqlObj* pSql);
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void            tscRemoveAllMeterMetaInfo(SQueryInfo* pQueryInfo, const char* address, bool removeFromCache);
SMeterMetaInfo* tscGetMeterMetaInfo(SSqlCmd *pCmd, int32_t subClauseIndex, int32_t tableIndex);
SMeterMetaInfo* tscGetMeterMetaInfoFromQueryInfo(SQueryInfo *pQueryInfo, int32_t tableIndex);

SQueryInfo *tscGetQueryInfoDetail(SSqlCmd* pCmd, int32_t subClauseIndex);
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int32_t tscGetQueryInfoDetailSafely(SSqlCmd *pCmd, int32_t subClauseIndex, SQueryInfo** pQueryInfo);
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SMeterMetaInfo* tscGetMeterMetaInfoByUid(SQueryInfo* pQueryInfo, uint64_t uid, int32_t* index);
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void            tscClearMeterMetaInfo(SMeterMetaInfo* pMeterMetaInfo, bool removeFromCache);
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SMeterMetaInfo* tscAddMeterMetaInfo(SQueryInfo* pQueryInfo, const char* name, SMeterMeta* pMeterMeta, SMetricMeta* pMetricMeta,
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                                    int16_t numOfTags, int16_t* tags);
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SMeterMetaInfo* tscAddEmptyMeterMetaInfo(SQueryInfo *pQueryInfo);
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int32_t tscAddSubqueryInfo(SSqlCmd *pCmd);
void tscFreeSubqueryInfo(SSqlCmd* pCmd);
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void tscClearSubqueryInfo(SSqlCmd* pCmd);
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void tscGetMetricMetaCacheKey(SQueryInfo* pQueryInfo, char* keyStr, uint64_t uid);
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int  tscGetMetricMeta(SSqlObj* pSql, int32_t clauseIndex);
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int  tscGetMeterMeta(SSqlObj* pSql, SMeterMetaInfo* pMeterMetaInfo);
int  tscGetMeterMetaEx(SSqlObj* pSql, SMeterMetaInfo* pMeterMetaInfo, bool createIfNotExists);
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void tscResetForNextRetrieve(SSqlRes* pRes);

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void tscAddTimestampColumn(SQueryInfo* pQueryInfo, int16_t functionId, int16_t tableIndex);
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void tscDoQuery(SSqlObj* pSql);

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/**
 * The create object function must be successful expect for the out of memory issue.
 *
 * Therefore, the metermeta/metricmeta object is directly passed to the newly created subquery object from the
 * previous sql object, instead of retrieving the metermeta/metricmeta from cache.
 *
 * Because the metermeta/metricmeta may have been released by other threads, resulting in the retrieving failed as
 * well as the create function.
 *
 * @param pSql
 * @param vnodeIndex
 * @param tableIndex
 * @param fp
 * @param param
 * @param pPrevSql
 * @return
 */
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SSqlObj* createSubqueryObj(SSqlObj* pSql, int16_t tableIndex, void (*fp)(), void* param, SSqlObj* pPrevSql);
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void     addGroupInfoForSubquery(SSqlObj* pParentObj, SSqlObj* pSql, int32_t subClauseIndex, int32_t tableIndex);
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void doAddGroupColumnForSubquery(SQueryInfo* pQueryInfo, int32_t tagIndex);
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int16_t tscGetJoinTagColIndexByUid(STagCond* pTagCond, uint64_t uid);
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TAOS* taos_connect_a(char* ip, char* user, char* pass, char* db, uint16_t port, void (*fp)(void*, TAOS_RES*, int),
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                     void* param, void** taos);

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void sortRemoveDuplicates(STableDataBlocks* dataBuf);
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void tscPrintSelectClause(SSqlCmd* pCmd, int32_t subClauseIndex);
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#ifdef __cplusplus
}
#endif

#endif  // TDENGINE_TSCUTIL_H