46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
#pragma once
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#ifndef MESSMER_BLOCKSTORE_IMPLEMENTATIONS_ONDISK_ONDISKBLOCKSTORE2_H_
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#define MESSMER_BLOCKSTORE_IMPLEMENTATIONS_ONDISK_ONDISKBLOCKSTORE2_H_
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#include "../../interface/BlockStore2.h"
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#include <boost/filesystem/path.hpp>
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#include <cpp-utils/macros.h>
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#include <cpp-utils/pointer/unique_ref.h>
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#include <cpp-utils/logging/logging.h>
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namespace blockstore {
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namespace ondisk {
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class OnDiskBlockStore2 final: public BlockStore2 {
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public:
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explicit OnDiskBlockStore2(const boost::filesystem::path& path);
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bool tryCreate(const BlockId &blockId, const cpputils::Data &data) override;
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bool remove(const BlockId &blockId) override;
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boost::optional<cpputils::Data> load(const BlockId &blockId) const override;
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void store(const BlockId &blockId, const cpputils::Data &data) override;
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uint64_t numBlocks() const override;
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uint64_t estimateNumFreeBytes() const override;
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uint64_t blockSizeFromPhysicalBlockSize(uint64_t blockSize) const override;
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void forEachBlock(std::function<void (const BlockId &)> callback) const override;
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private:
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boost::filesystem::path _rootDir;
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static const std::string FORMAT_VERSION_HEADER_PREFIX;
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static const std::string FORMAT_VERSION_HEADER;
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boost::filesystem::path _getFilepath(const BlockId &blockId) const;
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static cpputils::Data _checkAndRemoveHeader(const cpputils::Data &data);
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static bool _isAcceptedCryfsHeader(const cpputils::Data &data);
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static bool _isOtherCryfsHeader(const cpputils::Data &data);
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static unsigned int formatVersionHeaderSize();
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DISALLOW_COPY_AND_ASSIGN(OnDiskBlockStore2);
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};
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}
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}
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#endif
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