51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#pragma once
|
|
#ifndef MESSMER_BLOCKSTORE_IMPLEMENTATIONS_ONDISK_ONDISKBLOCK_H_
|
|
#define MESSMER_BLOCKSTORE_IMPLEMENTATIONS_ONDISK_ONDISKBLOCK_H_
|
|
|
|
#include <boost/filesystem/path.hpp>
|
|
#include "../../interface/Block.h"
|
|
#include <cpp-utils/data/Data.h>
|
|
#include <iostream>
|
|
|
|
#include <cpp-utils/pointer/unique_ref.h>
|
|
#include <mutex>
|
|
|
|
namespace blockstore {
|
|
namespace ondisk {
|
|
class OnDiskBlockStore;
|
|
|
|
class OnDiskBlock final: public Block {
|
|
public:
|
|
OnDiskBlock(const Key &key, const boost::filesystem::path &filepath, cpputils::Data data);
|
|
~OnDiskBlock();
|
|
|
|
static boost::optional<cpputils::unique_ref<OnDiskBlock>> LoadFromDisk(const boost::filesystem::path &rootdir, const Key &key);
|
|
static boost::optional<cpputils::unique_ref<OnDiskBlock>> CreateOnDisk(const boost::filesystem::path &rootdir, const Key &key, cpputils::Data data);
|
|
static void RemoveFromDisk(const boost::filesystem::path &rootdir, const Key &key);
|
|
|
|
const void *data() const override;
|
|
void write(const void *source, uint64_t offset, uint64_t size) override;
|
|
|
|
void flush() override;
|
|
|
|
size_t size() const override;
|
|
void resize(size_t newSize) override;
|
|
|
|
private:
|
|
const boost::filesystem::path _filepath;
|
|
cpputils::Data _data;
|
|
bool _dataChanged;
|
|
|
|
void _fillDataWithZeroes();
|
|
void _storeToDisk() const;
|
|
|
|
std::mutex _mutex;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(OnDiskBlock);
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|