/// <summary>
/// 处理上传文件块
/// </summary>
/// <param name="message">消息</param>
/// <param name="chunkInfo">文件块信息</param>
/// <returns>完成上传时返回消息</returns>
async Task <string> IFileGrain.UploadFileChunk(string message, FileChunkInfo chunkInfo)
{
string targetPath = Path.Combine(UploadPath, chunkInfo.FileName);
if (chunkInfo.Stop)
{
if (File.Exists(targetPath))
{
File.Delete(targetPath);
}
}
else
{
try
{
await using (FileStream targetStream = new FileStream(targetPath, FileMode.OpenOrCreate, FileAccess.Write))
{
await chunkInfo.WriteAsync(targetStream);
}
}
catch (OperationCanceledException)
{
if (File.Exists(targetPath))
{
File.Delete(targetPath);
}
throw;
}
if (chunkInfo.Done && _service != null)
{
return(await _service.AfterUploadFile(message, targetPath));
}
}
return(null);
}
