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34 lines
907 B
34 lines
907 B
#ifndef LEVELDB_BLOB_FILE_H_
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#define LEVELDB_BLOB_FILE_H_
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#include <string>
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#include "leveldb/status.h"
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#include "leveldb/slice.h"
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#include "leveldb/env.h"
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namespace leveldb {
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namespace blob {
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class BlobFile {
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public:
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explicit BlobFile(WritableFile* dest);
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BlobFile(WritableFile* dest, uint64_t dest_length);
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~BlobFile();
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// 添加一条记录，记录写入的偏移量
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Status AddRecord(const Slice& key, const Slice& value, uint64_t& offset);
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private:
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WritableFile* dest_; // 用于写入数据的目标文件
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uint64_t head_; // 当前写入位置的偏移量
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uint64_t bfid_; // 用于标识 BlobFile 的唯一 ID
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// uint64_t head_; // 当前写入文件的偏移量
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Status EmitDynamicRecord(const Slice& key, const Slice& value, uint64_t& offset);
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};
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} // namespace blob
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} // namespace leveldb
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#endif // LEVELDB_BLOB_FILE_H_
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