53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
#pragma once
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#ifndef MESSMER_BLOCKSTORE_INTERFACE_BLOCKSTORE2_H_
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#define MESSMER_BLOCKSTORE_INTERFACE_BLOCKSTORE2_H_
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#include "Block.h"
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#include <string>
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#include <boost/optional.hpp>
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#include <cpp-utils/pointer/unique_ref.h>
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#include <cpp-utils/data/Data.h>
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#include <cpp-utils/random/Random.h>
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namespace blockstore {
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class BlockStore2 {
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public:
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virtual ~BlockStore2() {}
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virtual BlockId createBlockId() const {
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return BlockId::Random();
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}
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WARN_UNUSED_RESULT
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virtual bool tryCreate(const BlockId &blockId, const cpputils::Data &data) = 0;
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WARN_UNUSED_RESULT
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virtual bool remove(const BlockId &blockId) = 0;
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WARN_UNUSED_RESULT
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virtual boost::optional<cpputils::Data> load(const BlockId &blockId) const = 0;
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// Store the block with the given blockId. If it doesn't exist, it is created.
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virtual void store(const BlockId &blockId, const cpputils::Data &data) = 0;
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BlockId create(const cpputils::Data& data) {
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while (true) {
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BlockId blockId = createBlockId();
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bool success = tryCreate(blockId, data);
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if (success) {
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return blockId;
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}
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}
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}
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virtual uint64_t numBlocks() const = 0;
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//TODO Test estimateNumFreeBytes
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virtual uint64_t estimateNumFreeBytes() const = 0;
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virtual uint64_t blockSizeFromPhysicalBlockSize(uint64_t blockSize) const = 0; // TODO Test
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virtual void forEachBlock(std::function<void (const BlockId &)> callback) const = 0;
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};
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}
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#endif
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