Sebastian Messmer 9ccb006f61 - Switch some CI jobs to clang 15
- Fix clang-tidy warnings from Clang 15
2023-07-08 14:48:59 -07:00

56 lines
1.9 KiB
C++

#pragma once
#ifndef MESSMER_BLOCKSTORE_INTERFACE_BLOCKSTORE_H_
#define MESSMER_BLOCKSTORE_INTERFACE_BLOCKSTORE_H_
#include "Block.h"
#include <string>
#include <boost/optional.hpp>
#include <cpp-utils/pointer/unique_ref.h>
#include <cpp-utils/data/Data.h>
namespace blockstore {
class BlockStore {
public:
virtual ~BlockStore() {}
virtual BlockId createBlockId() = 0;
//Returns boost::none if id already exists
// TODO Can we make data passed in by ref?
virtual boost::optional<cpputils::unique_ref<Block>> tryCreate(const BlockId &blockId, cpputils::Data data) = 0;
//TODO Use boost::optional (if id doesn't exist)
// Return nullptr if block with this id doesn't exists
virtual boost::optional<cpputils::unique_ref<Block>> load(const BlockId &blockId) = 0;
virtual cpputils::unique_ref<Block> overwrite(const blockstore::BlockId &blockId, cpputils::Data data) = 0;
virtual void remove(const BlockId &blockId) = 0;
virtual uint64_t numBlocks() const = 0;
//TODO Test estimateNumFreeBytes in all block stores
virtual uint64_t estimateNumFreeBytes() const = 0;
// Returns, how much space a block has if we allow it to take the given physical block size (i.e. after removing headers, checksums, whatever else).
// This can be used to create blocks with a certain physical block size.
virtual uint64_t blockSizeFromPhysicalBlockSize(uint64_t blockSize) const = 0; // TODO Test
virtual void forEachBlock(std::function<void (const BlockId &)> callback) const = 0;
virtual void remove(cpputils::unique_ref<Block> block) {
const BlockId blockId = block->blockId();
cpputils::destruct(std::move(block));
remove(blockId);
}
cpputils::unique_ref<Block> create(const cpputils::Data &data) {
while(true) {
//TODO Copy (data.copy()) necessary?
auto block = tryCreate(createBlockId(), data.copy());
if (block != boost::none) {
return std::move(*block);
}
}
}
};
}
#endif