public virtual async Task AppendFileAsync([FromQuery] VersionFileCreateDto versionFileCreate)
{
// 检查文件大小
var fileSizeLimited = await SettingProvider
.GetAsync(PlatformSettingNames.AppVersion.VersionFileLimitLength, AppVersionConsts.DefaultVersionFileLimitLength);
if (fileSizeLimited * 1024 * 1024 < versionFileCreate.TotalByte)
{
throw new UserFriendlyException(L["UploadFileSizeBeyondLimit", fileSizeLimited]);
}
// 采用分块模式上传文件
// 保存分块到临时目录
var fileName = versionFileCreate.FileName;
// 文件扩展名
var fileExtensionName = FileHelper.GetExtension(fileName);
var fileAllowExtension = await SettingProvider
.GetOrNullAsync(PlatformSettingNames.AppVersion.AllowVersionFileExtensions);
if (fileAllowExtension.IsNullOrWhiteSpace())
{
fileAllowExtension = AppVersionConsts.DefaultAllowVersionFileExtensions;
}
// 检查文件扩展名
if (!fileAllowExtension.Split(',').Any(fe => fe.Equals(fileExtensionName, StringComparison.CurrentCultureIgnoreCase)))
{
throw new UserFriendlyException(L["NotAllowedFileExtensionName", fileExtensionName]);
}
// 当前计算机临时目录
var tempFilePath = Environment.GetFolderPath(Environment.SpecialFolder.Templates);
// 以上传的文件名创建一个临时目录
tempFilePath = Path.Combine(tempFilePath, "lingyun-platform", Path.GetFileNameWithoutExtension(fileName));
// 以上传的分片索引创建临时文件
var tempSavedFile = Path.Combine(tempFilePath, $"{versionFileCreate.CurrentByte}.{fileExtensionName}");
if (!Directory.Exists(tempFilePath))
{
// 临时目录不存在则创建
Directory.CreateDirectory(tempFilePath);
}
try
{
if (HttpContext.RequestAborted.IsCancellationRequested)
{
// 如果取消请求,删除临时目录
Directory.Delete(tempFilePath, true);
return;
}
// 保存临时文件
using (var fs = new FileStream(tempSavedFile, FileMode.Create, FileAccess.Write))
{
// 写入当前分片文件
await Request.Body.CopyToAsync(fs);
}
if (versionFileCreate.CurrentByte == versionFileCreate.TotalByte)
{
// 合并文件
var mergeSavedFile = Path.Combine(tempFilePath, $"{fileName}");
// 获取并排序所有分片文件
var mergeFiles = Directory.GetFiles(tempFilePath).OrderBy(f => f.Length).ThenBy(f => f);
// 创建临时合并文件
using (var mergeSavedFileStream = new FileStream(mergeSavedFile, FileMode.Create))
{
foreach (var mergeFile in mergeFiles)
{
// 读取当前文件字节
var mergeFileBytes = await FileHelper.ReadAllBytesAsync(mergeFile);
// 写入到合并文件流
await mergeSavedFileStream.WriteAsync(mergeFileBytes, 0, mergeFileBytes.Length);
// 删除已参与合并的临时文件分片
FileHelper.DeleteIfExists(mergeFile);
}
// 上传最终合并的文件并取得SHA256指纹
var fileData = await mergeSavedFileStream.GetAllBytesAsync();
versionFileCreate.SHA256 = await _versionFileManager.SaveFileAsync(versionFileCreate.Version,
versionFileCreate.FilePath, versionFileCreate.FileName, versionFileCreate.FileVersion, fileData);
}
// 添加到版本信息
await _versionAppService.AppendFileAsync(versionFileCreate);
// 文件保存之后删除临时文件目录
Directory.Delete(tempFilePath, true);
}
}
catch
{
// 发生异常删除临时文件目录
Directory.Delete(tempFilePath, true);
throw;
}
}
public virtual async Task AppendFileAsync(VersionFileCreateDto versionFileCreate)
{
await _versionManager.AppendFileAsync(versionFileCreate.VersionId,
versionFileCreate.SHA256, versionFileCreate.FileName, versionFileCreate.FileVersion,
versionFileCreate.TotalByte, versionFileCreate.FilePath, versionFileCreate.FileType);
}