tsdbFS.h 1.7 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/>.
 */

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#include "tsdbFSet.h"

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#ifndef _TSDB_FILE_SYSTEM_H
#define _TSDB_FILE_SYSTEM_H

#ifdef __cplusplus
extern "C" {
#endif

/* Exposed Handle */
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typedef struct STFileSystem STFileSystem;
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typedef enum {
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  TSDB_FEDIT_COMMIT = 1,  //
  TSDB_FEDIT_MERGE
} EFEditT;
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/* Exposed APIs */
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// open/close
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int32_t tsdbOpenFS(STsdb *pTsdb, STFileSystem **fs, int8_t rollback);
int32_t tsdbCloseFS(STFileSystem **fs);
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// txn
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int32_t tsdbFSAllocEid(STFileSystem *pFS, int64_t *eid);
int32_t tsdbFSEditBegin(STFileSystem *fs, int64_t eid, const SArray *aFileOp, EFEditT etype);
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int32_t tsdbFSEditCommit(STFileSystem *pFS);
int32_t tsdbFSEditAbort(STFileSystem *pFS);
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// other
int32_t tsdbFSGetFSet(STFileSystem *fs, int32_t fid, const STFileSet **ppFSet);
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/* Exposed Structs */
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struct STFileSystem {
  STsdb  *pTsdb;
  tsem_t  canEdit;
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  int32_t state;
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  int64_t neid;
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  SArray *cstate;  // current state, SArray<STFileSet>
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  // new state
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  EFEditT etype;
  int64_t eid;
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  SArray *nstate;  // staging state, SArray<STFileSet>
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};

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#ifdef __cplusplus
}
#endif

#endif /*_TSDB_FILE_SYSTEM_H*/