38 lines
956 B
C++
38 lines
956 B
C++
#pragma once
|
|
#ifndef FSPP_BLOCKSTORE_BLOCKSTORE_H_
|
|
#define FSPP_BLOCKSTORE_BLOCKSTORE_H_
|
|
|
|
#include "Block.h"
|
|
#include <string>
|
|
#include <memory>
|
|
#include <messmer/cpp-utils/data/Data.h>
|
|
|
|
namespace blockstore {
|
|
|
|
class BlockStore {
|
|
public:
|
|
virtual ~BlockStore() {}
|
|
|
|
virtual Key createKey() = 0;
|
|
//Returns nullptr if key already exists
|
|
virtual std::unique_ptr<Block> tryCreate(const Key &key, cpputils::Data data) = 0;
|
|
//TODO Use boost::optional (if key doesn't exist)
|
|
// Return nullptr if block with this key doesn't exists
|
|
virtual std::unique_ptr<Block> load(const Key &key) = 0;
|
|
virtual void remove(std::unique_ptr<Block> block) = 0;
|
|
virtual uint64_t numBlocks() const = 0;
|
|
|
|
std::unique_ptr<Block> create(const cpputils::Data &data) {
|
|
std::unique_ptr<Block> block(nullptr);
|
|
while(block.get() == nullptr) {
|
|
//TODO Copy necessary?
|
|
block = tryCreate(createKey(), data.copy());
|
|
}
|
|
return block;
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|