public async Task <CreateAssetResult> Handle(CreateAssetCommand request, CancellationToken cancellationToken)
{
var release = await _db.Releases.SingleOrDefaultAsync(e => e.Uuid == request.ReleaseId);
if (release == null)
{
throw new AppException(AppErrorCode.NotFound, "Release was not found");
}
string filename = Regex.Match(request.FileName, _filenamePattern).Groups[0].Value;
filename = Regex.Replace(filename, _illegalFilenamePattern, "");
if (string.IsNullOrEmpty(filename))
{
throw new ValidationException("Invalid file name format");
}
string uuid = Uuid.NewUuid();
using var sha256 = SHA256.Create();
using var cryptoStream = new CryptoStream(request.FileStream, sha256, CryptoStreamMode.Read);
string storagePath = $"assets/{uuid}";
string tag = string.IsNullOrEmpty(request.Tag) ? null: request.Tag;
var uploadedObject = await _objectStorage.Upload(storagePath, cryptoStream, cacheExpiry : _cacheExpiry, cancellationToken : cancellationToken);
var asset = new Asset {
Uuid = uuid,
CreatedAt = _clock.UtcNowMilliseconds,
Name = request.FileName,
ContentSize = uploadedObject.Size,
ContentHashAlgorithm = HashAlgorithm.Sha256,
ContentHash = sha256.Hash,
StoragePath = storagePath,
Tag = tag
};
release.Assets.Add(asset);
return(new CreateAssetResult {
Id = asset.Uuid
});
}