private static async ValueTask <BlobFile> GetFileMetaAsync(byte appId, string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
var pathData = System.Text.Encoding.UTF8.GetBytes(path);
if (pathData.Length > MaxPathSize)
{
throw new ArgumentException("Path length out of range", nameof(path));
}
IntPtr pathPtr;
unsafe
{
//暂复制路径
var pathDataPtr = stackalloc byte[pathData.Length + 1];
pathDataPtr[0] = (byte)BlobReadType.kGetFileMeta;
pathPtr = new IntPtr(pathDataPtr);
Marshal.Copy(pathData, 0, pathPtr + 1, pathData.Length);
}
ulong metaRaftGroupId = (ulong)appId << IdUtil.RAFTGROUPID_APPID_OFFSET;
INativeData res = await StoreApi.Api.ReadIndexByGetAsync(metaRaftGroupId, pathPtr, (uint)(pathData.Length + 1));
unsafe
{
BlobFile *srcPtr = (BlobFile *)res.DataPtr.ToPointer();
return(*srcPtr);
}
}
public unsafe static ulong ToUInt64(this INativeData data)
{
if (data.Size != 8)
{
throw new InvalidCastException();
}
ulong *ptr = (ulong *)data.DataPtr.ToPointer();
return(*ptr);
}
private static void ParseAndWriteToStream(INativeData segmentData, ref uint fileSize, ref uint curRead, Stream stream)
{
curRead = (uint)segmentData.Size - 4;
IntPtr dataPtr = segmentData.DataPtr;
unsafe
{
uint *fileSizePtr = (uint *)dataPtr.ToPointer();
fileSize = *fileSizePtr;
var span = new ReadOnlySpan <byte>((dataPtr + 4).ToPointer(), (int)curRead);
stream.Write(span);
}
}
private static PrepareWriteResult ParsePrepareResult(INativeData data)
{
PrepareWriteResult res = new PrepareWriteResult();
unsafe
{
byte * dataPtr = (byte *)data.DataPtr.ToPointer();
ulong *raftGroupIdPtr = (ulong *)dataPtr;
res.ChunkRaftGroupId = *raftGroupIdPtr;
Guid *pathIdPtr = (Guid *)(dataPtr + 8);
res.ParentPathId = *pathIdPtr;
}
return(res);
}
public static string ToHexString(this INativeData data)
{
return(StringHelper.ToHexString(data.DataPtr, (int)data.Size));
}
public void Dispose()
{
_value.Dispose();
_value = null;
}
internal IndexRow(INativeData value)
{
_value = value;
ValueTuple = new KVTuple();
ValueTuple.ReadFrom(_value.DataPtr, (int)_value.Size);
}
public NaDataDebugger(INativeData data)
: base(data)
{
}
