/* * Copyright (c) 2019 TAOS Data, Inc. * * 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 . */ #ifndef TDENGINE_QUERYEXECUTOR_H #define TDENGINE_QUERYEXECUTOR_H #include "os.h" #include "hash.h" #include "qFill.h" #include "qResultbuf.h" #include "qSqlparser.h" #include "qTsbuf.h" #include "query.h" #include "taosdef.h" #include "tarray.h" #include "tlockfree.h" #include "tsdb.h" #include "tsqlfunction.h" struct SColumnFilterElem; typedef bool (*__filter_func_t)(struct SColumnFilterElem* pFilter, char* val1, char* val2); typedef int32_t (*__block_search_fn_t)(char* data, int32_t num, int64_t key, int32_t order); typedef struct SGroupResInfo { int32_t groupId; int32_t numOfDataPages; int32_t pageId; int32_t rowId; } SGroupResInfo; typedef struct SWindowResultPool { int32_t elemSize; int32_t blockSize; int32_t numOfElemPerBlock; struct { int32_t blockIndex; int32_t pos; } position; SArray* pData; // SArray } SWindowResultPool; typedef struct SSqlGroupbyExpr { int16_t tableIndex; SArray* columnInfo; // SArray, group by columns information int16_t numOfGroupCols; int16_t orderIndex; // order by column index int16_t orderType; // order by type: asc/desc } SSqlGroupbyExpr; typedef struct SResultRow { int32_t pageId; // pageId & rowId is the position of current result in disk-based output buffer int32_t rowId:15; bool closed:1; // this result status: closed or opened uint16_t numOfRows; // number of rows of current time window SResultRowCellInfo* pCellInfo; // For each result column, there is a resultInfo union {STimeWindow win; char* key;}; // start key of current time window } SResultRow; /** * If the number of generated results is greater than this value, * query query will be halt and return results to client immediate. */ typedef struct SResultRec { int64_t total; // total generated result size in rows int64_t rows; // current result set size in rows int64_t capacity; // capacity of current result output buffer int32_t threshold; // result size threshold in rows. } SResultRec; typedef struct SWindowResInfo { SResultRow** pResult; // result list int16_t type; // data type for hash key int32_t capacity; // max capacity int32_t curIndex; // current start active index int32_t size; // number of result set int64_t startTime; // start time of the first time window for sliding query int64_t prevSKey; // previous (not completed) sliding window start key int64_t threshold; // threshold to halt query and return the generated results. int64_t interval; // time window interval } SWindowResInfo; typedef struct SColumnFilterElem { int16_t bytes; // column length __filter_func_t fp; SColumnFilterInfo filterInfo; } SColumnFilterElem; typedef struct SSingleColumnFilterInfo { void* pData; int32_t numOfFilters; SColumnInfo info; SColumnFilterElem* pFilters; } SSingleColumnFilterInfo; typedef struct STableQueryInfo { TSKEY lastKey; int32_t groupIndex; // group id in table list int16_t queryRangeSet; // denote if the query range is set, only available for interval query tVariant tag; STimeWindow win; STSCursor cur; void* pTable; // for retrieve the page id list SWindowResInfo windowResInfo; } STableQueryInfo; typedef struct SQueryCostInfo { uint64_t loadStatisTime; uint64_t loadFileBlockTime; uint64_t loadDataInCacheTime; uint64_t loadStatisSize; uint64_t loadFileBlockSize; uint64_t loadDataInCacheSize; uint64_t loadDataTime; uint64_t totalRows; uint64_t totalCheckedRows; uint32_t totalBlocks; uint32_t loadBlocks; uint32_t loadBlockStatis; uint32_t discardBlocks; uint64_t elapsedTime; uint64_t firstStageMergeTime; uint64_t winInfoSize; uint64_t tableInfoSize; uint64_t hashSize; uint64_t numOfTimeWindows; } SQueryCostInfo; typedef struct SQuery { int16_t numOfCols; int16_t numOfTags; SOrderVal order; STimeWindow window; SInterval interval; int16_t precision; int16_t numOfOutput; int16_t fillType; int16_t checkBuffer; // check if the buffer is full during scan each block SLimitVal limit; int32_t rowSize; SSqlGroupbyExpr* pGroupbyExpr; SExprInfo* pSelectExpr; SColumnInfo* colList; SColumnInfo* tagColList; int32_t numOfFilterCols; int64_t* fillVal; uint32_t status; // query status SResultRec rec; int32_t pos; tFilePage** sdata; STableQueryInfo* current; SSingleColumnFilterInfo* pFilterInfo; } SQuery; typedef struct SQueryRuntimeEnv { jmp_buf env; SResultRowCellInfo* resultInfo; // todo refactor to merge with SWindowResInfo SQuery* pQuery; SQLFunctionCtx* pCtx; int32_t numOfRowsPerPage; uint16_t offset[TSDB_MAX_COLUMNS]; uint16_t scanFlag; // denotes reversed scan of data or not SFillInfo* pFillInfo; SWindowResInfo windowResInfo; STSBuf* pTSBuf; STSCursor cur; SQueryCostInfo summary; void* pQueryHandle; void* pSecQueryHandle; // another thread for bool stableQuery; // super table query or not bool topBotQuery; // false bool groupbyNormalCol; // denote if this is a groupby normal column query bool hasTagResults; // if there are tag values in final result or not int32_t interBufSize; // intermediate buffer sizse int32_t prevGroupId; // previous executed group id SDiskbasedResultBuf* pResultBuf; // query result buffer based on blocked-wised disk file SHashObj* pWindowHashTable; // quick locate the window object for each result char* keyBuf; // window key buffer SWindowResultPool* pool; // window result object pool int32_t* rowCellInfoOffset;// offset value for each row result cell info } SQueryRuntimeEnv; enum { QUERY_RESULT_NOT_READY = 1, QUERY_RESULT_READY = 2, }; typedef struct SMemRef { int32_t ref; void *mem; void *imem; } SMemRef; typedef struct SQInfo { void* signature; int32_t code; // error code to returned to client int64_t owner; // if it is in execution void* tsdb; SMemRef memRef; int32_t vgId; STableGroupInfo tableGroupInfo; // table list SArray STableGroupInfo tableqinfoGroupInfo; // this is a group array list, including SArray structure SQueryRuntimeEnv runtimeEnv; SArray* arrTableIdInfo; int32_t groupIndex; /* * the query is executed position on which meter of the whole list. * when the index reaches the last one of the list, it means the query is completed. */ int32_t tableIndex; SGroupResInfo groupResInfo; void* pBuf; // allocated buffer for STableQueryInfo, sizeof(STableQueryInfo)*numOfTables; pthread_mutex_t lock; // used to synchronize the rsp/query threads tsem_t ready; int32_t dataReady; // denote if query result is ready or not void* rspContext; // response context } SQInfo; #endif // TDENGINE_QUERYEXECUTOR_H