homework-jianmu/include/libs/stream/streamSnapshot.h

36 lines
1.6 KiB
C

/*
* 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 _STREAM_BACKEDN_SNAPSHOT_H_
#define _STREAM_BACKEDN_SNAPSHOT_H_
#include "tcommon.h"
#define STREAM_STATE_TRANSFER "stream-state-transfer"
typedef struct SStreamSnapReader SStreamSnapReader;
typedef struct SStreamSnapWriter SStreamSnapWriter;
typedef struct SStreamSnapHandle SStreamSnapHandle;
typedef struct SStreamSnapBlockHdr SStreamSnapBlockHdr;
int32_t streamSnapReaderOpen(void* pMeta, int64_t sver, int64_t ever, char* path, SStreamSnapReader** ppReader);
int32_t streamSnapReaderClose(SStreamSnapReader* pReader);
int32_t streamSnapRead(SStreamSnapReader* pReader, uint8_t** ppData, int64_t* size);
// SMetaSnapWriter ========================================
int32_t streamSnapWriterOpen(void* pMeta, int64_t sver, int64_t ever, char* path, SStreamSnapWriter** ppWriter);
int32_t streamSnapWrite(SStreamSnapWriter* pWriter, uint8_t* pData, uint32_t nData);
int32_t streamSnapWriterClose(SStreamSnapWriter* ppWriter, int8_t rollback);
#endif