100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_META_H_
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#define _TD_META_H_
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#include "taosmsg.h"
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#include "os.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* ------------------------ APIs Exposed ------------------------ */
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// Types exported
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typedef uint64_t tb_uid_t;
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typedef struct SMeta SMeta;
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typedef struct SMetaOpts SMetaOpts;
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typedef struct SMetaQueryHandle SMetaQueryHandle;
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typedef struct SMetaQueryOpts SMetaQueryOpts;
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typedef struct STableOpts STableOpts;
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// SMeta operations
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int metaCreate(const char *path);
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void metaDestroy(const char *path);
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SMeta *metaOpen(SMetaOpts *);
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void metaClose(SMeta *);
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int metaCreateTable(SMeta *, const STableOpts *);
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int metaDropTable(SMeta *, uint64_t tuid_t);
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int metaAlterTable(SMeta *, void *);
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int metaCommit(SMeta *);
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// Options
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SMetaOpts *metaOptionsCreate();
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void metaOptionsDestroy(SMetaOpts *);
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void metaOptionsSetCache(SMetaOpts *, size_t capacity);
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// SMetaQueryHandle
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SMetaQueryHandle *metaQueryHandleCreate(SMetaQueryOpts *);
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void metaQueryHandleDestroy(SMetaQueryHandle *);
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// SMetaQueryOpts
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SMetaQueryOpts *metaQueryOptionsCreate();
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void metaQueryOptionsDestroy(SMetaQueryOpts *);
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// STableOpts
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#define META_TABLE_OPTS_DECLARE(name) STableOpts name = {0}
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void metaNormalTableOptsInit(STableOpts *, const char *name, const STSchema *pSchema);
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void metaSuperTableOptsInit(STableOpts *, const char *name, tb_uid_t uid, const STSchema *pSchema,
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const STSchema *pTagSchema);
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void metaChildTableOptsInit(STableOpts *, const char *name, tb_uid_t suid, const SKVRow tags);
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void metaTableOptsClear(STableOpts *);
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/* ------------------------ Impl should hidden ------------------------ */
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typedef enum { META_INIT_TABLE = 0, META_SUPER_TABLE = 1, META_CHILD_TABLE = 2, META_NORMAL_TABLE = 3 } EMetaTableT;
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typedef struct SSuperTableOpts {
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tb_uid_t uid;
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STSchema *pSchema; // (ts timestamp, a int)
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STSchema *pTagSchema; // (tag1 binary(10), tag2 int)
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} SSuperTableOpts;
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typedef struct SChildTableOpts {
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tb_uid_t suid; // super table uid
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SKVRow tags; // tag value of the child table
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} SChildTableOpts;
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typedef struct SNormalTableOpts {
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STSchema *pSchema;
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} SNormalTableOpts;
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struct STableOpts {
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int8_t type;
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char * name;
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union {
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SSuperTableOpts superOpts;
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SChildTableOpts childOpts;
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SNormalTableOpts normalOpts;
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};
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_META_H_*/
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