417a701636
- Fixed numBlocks() in OnDiskBlockStore, FakeBlockStore, CachingBlockStore, ... - CachingBlockStore caches created blocks and doesn't directly create them in the underlying blockstore
38 lines
904 B
C++
38 lines
904 B
C++
#pragma once
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#ifndef FSPP_BLOCKSTORE_BLOCKSTORE_H_
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#define FSPP_BLOCKSTORE_BLOCKSTORE_H_
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#include "Block.h"
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#include <string>
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#include <memory>
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#include "../utils/Data.h"
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namespace blockstore {
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class BlockStore {
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public:
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virtual ~BlockStore() {}
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virtual Key createKey() = 0;
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//Returns nullptr if key already exists
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virtual std::unique_ptr<Block> tryCreate(const Key &key, Data data) = 0;
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//TODO Use boost::optional (if key doesn't exist)
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// Return nullptr if block with this key doesn't exists
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virtual std::unique_ptr<Block> load(const Key &key) = 0;
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virtual void remove(std::unique_ptr<Block> block) = 0;
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virtual uint64_t numBlocks() const = 0;
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std::unique_ptr<Block> create(const Data &data) {
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std::unique_ptr<Block> block(nullptr);
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while(block.get() == nullptr) {
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//TODO Copy necessary?
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block = tryCreate(createKey(), data.copy());
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}
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return block;
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}
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};
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}
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#endif
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