/* * 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 . */ #if !defined(_TD_TSDB_FILE_H_) #define _TD_TSDB_FILE_H_ #include #include "taosdef.h" #include "tglobalcfg.h" #ifdef __cplusplus extern "C" { #endif #define tsdbGetKeyFileId(key, daysPerFile, precision) ((key) / tsMsPerDay[(precision)] / (daysPerFile)) #define tsdbGetMaxNumOfFiles(keep, daysPerFile) ((keep) / (daysPerFile) + 3) typedef enum { TSDB_FILE_TYPE_HEAD = 0, // .head file type TSDB_FILE_TYPE_DATA, // .data file type TSDB_FILE_TYPE_LAST, // .last file type TSDB_FILE_TYPE_MAX } TSDB_FILE_TYPE; extern const char *tsdbFileSuffix[]; typedef struct { int8_t type; char fname[128]; int64_t size; // total size of the file int64_t tombSize; // unused file size } SFile; typedef struct { int32_t fileId; SFile files[TSDB_FILE_TYPE_MAX]; } SFileGroup; // TSDB file handle typedef struct { int32_t daysPerFile; int32_t keep; int32_t minRowPerFBlock; int32_t maxRowsPerFBlock; int32_t maxTables; SFileGroup fGroup[]; } STsdbFileH; /** * if numOfSubBlocks == -1, then the SCompBlock is a sub-block * if numOfSubBlocks == 1, then the SCompBlock refers to the data block, and offset/len refer to * the data block offset and length * if numOfSubBlocks > 1, then the offset/len refer to the offset of the first sub-block in the * binary */ typedef struct { int64_t last : 1; // If the block in data file or last file int64_t offset : 63; // Offset of data block or sub-block index depending on numOfSubBlocks int32_t algorithm : 8; // Compression algorithm int32_t numOfPoints : 24; // Number of total points int32_t sversion; // Schema version int32_t len; // Data block length or nothing int16_t numOfSubBlocks; // Number of sub-blocks; int16_t numOfCols; TSKEY keyFirst; TSKEY keyLast; } SCompBlock; #define IS_VALID_TSDB_FILE_TYPE(type) ((type) >= TSDB_FILE_TYPE_HEAD && (type) < TSDB_FILE_TYPE_MAX) STsdbFileH *tsdbInitFile(char *dataDir, int32_t daysPerFile, int32_t keep, int32_t minRowsPerFBlock, int32_t maxRowsPerFBlock, int32_t maxTables); void tsdbCloseFile(STsdbFileH *pFileH); int tsdbCreateFileGroup(char *dataDir, int fileId, SFileGroup *pFGroup, int maxTables); void tsdbGetKeyRangeOfFileId(int32_t daysPerFile, int8_t precision, int32_t fileId, TSKEY *minKey, TSKEY *maxKey); #ifdef __cplusplus } #endif #endif // _TD_TSDB_FILE_H_