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// Copyright Epic Games, Inc. All Rights Reserved.
#include "compactcas.h"
#include <zenstore/blockstore.h>
#if ZEN_WITH_TESTS
# include <zencore/compactbinarybuilder.h>
# include <zencore/testing.h>
# include <zencore/testutils.h>
# include <algorithm>
# include <random>
#endif
//////////////////////////////////////////////////////////////////////////
namespace zen {
//////////////////////////////////////////////////////////////////////////
BlockStoreFile::BlockStoreFile(const std::filesystem::path& BlockPath) : m_Path(BlockPath)
{
}
BlockStoreFile::~BlockStoreFile()
{
m_IoBuffer = IoBuffer();
m_File.Detach();
}
const std::filesystem::path&
BlockStoreFile::GetPath() const
{
return m_Path;
}
void
BlockStoreFile::Open()
{
m_File.Open(m_Path, BasicFile::Mode::kDelete);
void* FileHandle = m_File.Handle();
m_IoBuffer = IoBuffer(IoBuffer::File, FileHandle, 0, m_File.FileSize());
}
void
BlockStoreFile::Create(uint64_t InitialSize)
{
auto ParentPath = m_Path.parent_path();
if (!std::filesystem::is_directory(ParentPath))
{
CreateDirectories(ParentPath);
}
m_File.Open(m_Path, BasicFile::Mode::kTruncateDelete);
if (InitialSize > 0)
{
m_File.SetFileSize(InitialSize);
}
void* FileHandle = m_File.Handle();
m_IoBuffer = IoBuffer(IoBuffer::File, FileHandle, 0, InitialSize);
}
uint64_t
BlockStoreFile::FileSize()
{
return m_File.FileSize();
}
void
BlockStoreFile::MarkAsDeleteOnClose(std::error_code& Ec)
{
m_File.MarkAsDeleteOnClose(Ec);
}
IoBuffer
BlockStoreFile::GetChunk(uint64_t Offset, uint64_t Size)
{
return IoBuffer(m_IoBuffer, Offset, Size);
}
void
BlockStoreFile::Read(void* Data, uint64_t Size, uint64_t FileOffset)
{
m_File.Read(Data, Size, FileOffset);
}
void
BlockStoreFile::Write(const void* Data, uint64_t Size, uint64_t FileOffset)
{
m_File.Write(Data, Size, FileOffset);
}
void
BlockStoreFile::Truncate(uint64_t Size)
{
m_File.SetFileSize(Size);
}
void
BlockStoreFile::Flush()
{
m_File.Flush();
}
void
BlockStoreFile::StreamByteRange(uint64_t FileOffset, uint64_t Size, std::function<void(const void* Data, uint64_t Size)>&& ChunkFun)
{
m_File.StreamByteRange(FileOffset, Size, std::move(ChunkFun));
}
#if ZEN_WITH_TESTS
static bool
operator==(const BlockStoreLocation& Lhs, const BlockStoreLocation& Rhs)
{
return Lhs.BlockIndex == Rhs.BlockIndex && Lhs.Offset == Rhs.Offset && Lhs.Size == Rhs.Size;
}
TEST_CASE("blockstore.blockstoredisklocation")
{
BlockStoreLocation Zero = BlockStoreLocation{.BlockIndex = 0, .Offset = 0, .Size = 0};
CHECK(Zero == BlockStoreDiskLocation(Zero, 4).Get(4));
BlockStoreLocation MaxBlockIndex = BlockStoreLocation{.BlockIndex = BlockStoreDiskLocation::MaxBlockIndex, .Offset = 0, .Size = 0};
CHECK(MaxBlockIndex == BlockStoreDiskLocation(MaxBlockIndex, 4).Get(4));
BlockStoreLocation MaxOffset = BlockStoreLocation{.BlockIndex = 0, .Offset = BlockStoreDiskLocation::MaxOffset * 4, .Size = 0};
CHECK(MaxOffset == BlockStoreDiskLocation(MaxOffset, 4).Get(4));
BlockStoreLocation MaxSize = BlockStoreLocation{.BlockIndex = 0, .Offset = 0, .Size = std::numeric_limits<uint32_t>::max()};
CHECK(MaxSize == BlockStoreDiskLocation(MaxSize, 4).Get(4));
BlockStoreLocation MaxBlockIndexAndOffset =
BlockStoreLocation{.BlockIndex = BlockStoreDiskLocation::MaxBlockIndex, .Offset = BlockStoreDiskLocation::MaxOffset * 4, .Size = 0};
CHECK(MaxBlockIndexAndOffset == BlockStoreDiskLocation(MaxBlockIndexAndOffset, 4).Get(4));
BlockStoreLocation MaxAll = BlockStoreLocation{.BlockIndex = BlockStoreDiskLocation::MaxBlockIndex,
.Offset = BlockStoreDiskLocation::MaxOffset * 4,
.Size = std::numeric_limits<uint32_t>::max()};
CHECK(MaxAll == BlockStoreDiskLocation(MaxAll, 4).Get(4));
BlockStoreLocation MaxAll4096 = BlockStoreLocation{.BlockIndex = BlockStoreDiskLocation::MaxBlockIndex,
.Offset = BlockStoreDiskLocation::MaxOffset * 4096,
.Size = std::numeric_limits<uint32_t>::max()};
CHECK(MaxAll4096 == BlockStoreDiskLocation(MaxAll4096, 4096).Get(4096));
BlockStoreLocation Middle = BlockStoreLocation{.BlockIndex = (BlockStoreDiskLocation::MaxBlockIndex) / 2,
.Offset = ((BlockStoreDiskLocation::MaxOffset) / 2) * 4,
.Size = std::numeric_limits<uint32_t>::max() / 2};
CHECK(Middle == BlockStoreDiskLocation(Middle, 4).Get(4));
}
TEST_CASE("blockstore.blockfile")
{
ScopedTemporaryDirectory TempDir;
auto RootDirectory = TempDir.Path() / "blocks";
CreateDirectories(RootDirectory);
{
BlockStoreFile File1(RootDirectory / "1");
File1.Create(16384);
CHECK(File1.FileSize() == 16384);
File1.Write("data", 5, 0);
IoBuffer DataChunk = File1.GetChunk(0, 5);
File1.Write("boop", 5, 5);
IoBuffer BoopChunk = File1.GetChunk(5, 5);
const char* Data = static_cast<const char*>(DataChunk.GetData());
CHECK(std::string(Data) == "data");
const char* Boop = static_cast<const char*>(BoopChunk.GetData());
CHECK(std::string(Boop) == "boop");
File1.Flush();
}
{
BlockStoreFile File1(RootDirectory / "1");
File1.Open();
char DataRaw[5];
File1.Read(DataRaw, 5, 0);
CHECK(std::string(DataRaw) == "data");
IoBuffer DataChunk = File1.GetChunk(0, 5);
char BoopRaw[5];
File1.Read(BoopRaw, 5, 5);
CHECK(std::string(BoopRaw) == "boop");
IoBuffer BoopChunk = File1.GetChunk(5, 5);
const char* Data = static_cast<const char*>(DataChunk.GetData());
CHECK(std::string(Data) == "data");
const char* Boop = static_cast<const char*>(BoopChunk.GetData());
CHECK(std::string(Boop) == "boop");
}
{
IoBuffer DataChunk;
IoBuffer BoopChunk;
{
BlockStoreFile File1(RootDirectory / "1");
File1.Open();
DataChunk = File1.GetChunk(0, 5);
BoopChunk = File1.GetChunk(5, 5);
}
CHECK(std::filesystem::exists(RootDirectory / "1"));
const char* Data = static_cast<const char*>(DataChunk.GetData());
CHECK(std::string(Data) == "data");
const char* Boop = static_cast<const char*>(BoopChunk.GetData());
CHECK(std::string(Boop) == "boop");
}
CHECK(std::filesystem::exists(RootDirectory / "1"));
{
IoBuffer DataChunk;
IoBuffer BoopChunk;
{
BlockStoreFile File1(RootDirectory / "1");
File1.Open();
std::error_code Ec;
File1.MarkAsDeleteOnClose(Ec);
CHECK(!Ec);
DataChunk = File1.GetChunk(0, 5);
BoopChunk = File1.GetChunk(5, 5);
}
const char* Data = static_cast<const char*>(DataChunk.GetData());
CHECK(std::string(Data) == "data");
const char* Boop = static_cast<const char*>(BoopChunk.GetData());
CHECK(std::string(Boop) == "boop");
}
CHECK(!std::filesystem::exists(RootDirectory / "1"));
}
#endif
void
blockstore_forcelink()
{
}
} // namespace zen
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