43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
#pragma once
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#ifndef MESSMER_BLOCKSTORE_IMPLEMENTATIONS_LOWTOHIGHLEVEL_LOWTOHIGHLEVELBLOCKSTORE_H_
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#define MESSMER_BLOCKSTORE_IMPLEMENTATIONS_LOWTOHIGHLEVEL_LOWTOHIGHLEVELBLOCKSTORE_H_
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#include "../../interface/BlockStore.h"
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#include "../../interface/BlockStore2.h"
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#include <cpp-utils/macros.h>
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#include <cpp-utils/pointer/cast.h>
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#include <iostream>
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// TODO Think each function through and make sure it's as performant
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// to use LowToHighLevelBlockStore<OnDiskBlockStore2> as to use
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// OnDiskBlockStore directly (i.e. no additional stores/loads from the disk)
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// (same for other base block stores)
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namespace blockstore {
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namespace lowtohighlevel {
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class LowToHighLevelBlockStore final: public BlockStore {
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public:
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LowToHighLevelBlockStore(cpputils::unique_ref<BlockStore2> baseBlockStore);
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BlockId createBlockId() override;
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boost::optional<cpputils::unique_ref<Block>> tryCreate(const BlockId &blockId, cpputils::Data data) override;
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cpputils::unique_ref<Block> overwrite(const blockstore::BlockId &blockId, cpputils::Data data) override;
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boost::optional<cpputils::unique_ref<Block>> load(const BlockId &blockId) override;
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void remove(const BlockId &blockId) 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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cpputils::unique_ref<BlockStore2> _baseBlockStore;
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DISALLOW_COPY_AND_ASSIGN(LowToHighLevelBlockStore);
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};
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}
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}
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#endif
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