public async Task <GetDocumentStreamQueryResult> RetrieveAsync(GetDocumentStreamQuery query, CancellationToken cancellationToken = default)
{
if (cancellationToken.IsCancellationRequested)
{
_logger.LogInformation($"{nameof(GetDocumentStreamQueryHandler)}.{nameof(RetrieveAsync)} was cancelled before execution");
cancellationToken.ThrowIfCancellationRequested();
}
using (var context = _projectionDbContextFactory.Create())
{
var document = await context.Set <Document>().FindAsync(new object[] { query.Subject }, cancellationToken);
if (document is null)
{
throw new ArgumentNullException(nameof(document));
}
if (!_contentTypeProvider.TryGetContentType(document.FileName, out var contentType))
{
contentType = "application/octet-stream";
}
var result = new GetDocumentStreamQueryResult(new MemoryStream(), contentType, document.FileName);
await _fileClient.DownloadAsync($"{query.Subject}{Path.GetExtension(document.FileName)}", query.Actor, result.Stream, cancellationToken);
result.Stream.Position = 0;
return(result);
}
}
public async Task <FileResult> DownloadAsync(string fileName, string userId)
{
lock (_downloadLockObj)
{
if (_downloadTask == null)
{
_downloadTask = Task.Run(async() => await _fileClient.DownloadAsync(fileName, userId), _cts.Token);
}
}
return(await _downloadTask);
}
private async Task QueueText(string text, int index, AWSSpeechRequest request, AWSSpeechResult result)
{
var synthesizeSpeechRequest = new StartSpeechSynthesisTaskRequest
{
OutputFormat = request.OutputFormat,
VoiceId = request.VoiceId,
Text = text,
OutputS3BucketName = _translationOptions.Bucket,
OutputS3KeyPrefix = Guid.NewGuid().ToString()
};
var response = await _pollyClient.StartSpeechSynthesisTaskAsync(synthesizeSpeechRequest);
using (var waitHandle = new AutoResetEvent(false))
using (new Timer(
callback: async(e) => { await CheckSynthesisTask(response.SynthesisTask.TaskId, waitHandle); },
state: null,
dueTime: TimeSpan.Zero,
period: TimeSpan.FromSeconds(_translationOptions.PollRate)
)
)
{
waitHandle.WaitOne();
}
var task = await _pollyClient.GetSpeechSynthesisTaskAsync(new GetSpeechSynthesisTaskRequest { TaskId = response.SynthesisTask.TaskId });
if (task.SynthesisTask.TaskStatus == Amazon.Polly.TaskStatus.Failed)
{
throw new InvalidOperationException();
}
var key = task.SynthesisTask.OutputUri.Split('/').Last();
var fileResult = await _fileClient.DownloadAsync(key, "");
using (var stream = await fileResult.OpenStreamAsync())
{
await result.DigestBytes(index, stream);
}
if (request.CallBack != null)
{
await request.CallBack(text.Length);
}
await _fileClient.DeleteAsync(key, "");
}
public async Task StartAsync(TranslationRequest request)
{
int version = request.Version + 1;
var fileResult = await _fileClient.DownloadAsync(
fileName : $"{request.CorrelationId}{Path.GetExtension(request.FileName)}",
userId : request.UserId
);
string text;
using (var fileStream = await fileResult.OpenStreamAsync())
using (var textExtractor = TextExtractor.Open(fileStream, fileResult.ContentType))
{
text = await textExtractor.ExtractAsync();
}
var textChunks = text.ChunkWithDelimeters(5000, '.', '!', '?', ')', '"', '}', ']').ToArray();
await _eventPublisher.PublishAsync(new TranslationStarted(
aggregateId : request.AggregateId,
version : version,
correlationId : request.CorrelationId,
causationId : request.CausationId,
characterCount : textChunks.Sum(tc => tc.Length),
userId : request.UserId
));
try
{
for (int i = 0; i < textChunks.Count(); i++)
{
version++;
await _eventPublisher.PublishAsync(new TranslationCharactersProcessed(
aggregateId : request.AggregateId,
version : version,
correlationId : request.CorrelationId,
causationId : request.CausationId,
charactersProcessed : textChunks[i].Length,
userId : request.UserId
));
}
using (var stream = new MemoryStream())
using (TextWriter tw = new StreamWriter(stream))
{
await tw.WriteAsync("test");
await tw.FlushAsync();
stream.Position = 0;
await _fileClient.UploadAsync($"{request.AggregateId}.mp3", request.UserId, stream);
await _eventPublisher.PublishAsync(new TranslationSucceded(
aggregateId : request.AggregateId,
version : ++version,
correlationId : request.CorrelationId,
causationId : request.CausationId,
userId : request.UserId
));
}
}
catch (Exception e)
{
await _eventPublisher.PublishAsync(new TranslationFailed(
aggregateId : request.AggregateId,
version : ++version,
correlationId : request.CorrelationId,
causationId : request.CausationId,
error : e.Message,
userId : request.UserId
));
}
}
public async Task StartAsync(TranslationRequest request)
{
int version = request.Version + 1;
var fileResult = await _fileClient.DownloadAsync(
fileName : $"{request.CorrelationId}{Path.GetExtension(request.FileName)}",
userId : request.UserId
);
string text;
using (var fileStream = await fileResult.OpenStreamAsync())
using (var textExtractor = TextExtractor.Open(fileStream, fileResult.ContentType))
{
text = await textExtractor.ExtractAsync();
}
var textChunks = text.ChunkWithDelimeters(5000, '.', '!', '?', ')', '"', '}', ']');
await _eventPublisher.PublishAsync(new TranslationStarted(
aggregateId : request.AggregateId,
version : version,
correlationId : request.CorrelationId,
causationId : request.CausationId,
characterCount : textChunks.Sum(tc => tc.Length),
userId : request.UserId
));
try
{
var result = await _speechSynthesizer.TranslateTextAsync(new GoogleSpeechRequest(
voiceSelection : new VoiceSelectionParams
{
Name = request.TranslationSubject
},
audioConfig : new AudioConfig
{
AudioEncoding = AudioEncoding.Mp3
},
content : textChunks,
callback : async length =>
{
Interlocked.Increment(ref version);
await _semaphoreSlim.WaitAsync();
try
{
await _eventPublisher.PublishAsync(new TranslationCharactersProcessed(
aggregateId: request.AggregateId,
version: version,
correlationId: request.CorrelationId,
causationId: request.CausationId,
charactersProcessed: length,
userId: request.UserId
));
}
catch (Exception)
{
throw;
}
finally
{
_semaphoreSlim.Release();
}
}
));
using (var stream = await result.OpenStreamAsync())
{
await _fileClient.UploadAsync($"{request.AggregateId}.mp3", request.UserId, stream);
await _eventPublisher.PublishAsync(new TranslationSucceded(
aggregateId : request.AggregateId,
version : ++version,
correlationId : request.CorrelationId,
causationId : request.CausationId,
userId : request.UserId
));
}
}
catch (Exception e)
{
await _eventPublisher.PublishAsync(new TranslationFailed(
aggregateId : request.AggregateId,
version : ++version,
correlationId : request.CorrelationId,
causationId : request.CausationId,
error : e.Message,
userId : request.UserId
));
}
}
public async Task StartAsync(TranslationRequest request)
{
int version = request.Version + 1;
var fileResult = await _fileClient.DownloadAsync(
fileName : $"{request.CorrelationId.ToString()}{Path.GetExtension(request.FileName)}",
userId : request.UserId
);
string text;
using (var fileStream = await fileResult.OpenStreamAsync())
using (var textExtractor = TextExtractor.Open(fileStream, fileResult.ContentType))
{
text = await textExtractor.ExtractAsync();
}
var textChunks = text.ChunkWithDelimeters(100000, '.', '!', '?', ')', '"', '}', ']');
await _eventPublisher.PublishAsync(new TranslationStarted(
aggregateId : request.AggregateId,
version : version,
correlationId : request.CorrelationId,
causationId : request.CausationId,
characterCount : text.Length,
userId : request.UserId
));
try
{
var result = await _speechSynthesizer.TranslateTextAsync(new AWSSpeechRequest {
OutputFormat = "",
Content = textChunks,
VoiceId = request.TranslationSubject,
CallBack = async length =>
{
Interlocked.Increment(ref version);
await _semaphoreSlim.WaitAsync();
try
{
await _eventPublisher.PublishAsync(new TranslationCharactersProcessed(
aggregateId: request.AggregateId,
version: version,
correlationId: request.CorrelationId,
causationId: request.CausationId,
charactersProcessed: length,
userId: request.UserId
));
}
catch (Exception)
{
throw;
}
finally
{
_semaphoreSlim.Release();
}
}
});;
using (var stream = await result.OpenStreamAsync())
{
await _fileClient.UploadAsync($"{request.AggregateId}.mp3", request.UserId, stream);
await _eventPublisher.PublishAsync(new TranslationSucceded(
aggregateId : request.AggregateId,
version : version + 1,
correlationId : request.CorrelationId,
causationId : request.CausationId,
userId : request.UserId
));
}
}
catch (Exception e)
{
await _eventPublisher.PublishAsync(new TranslationFailed(
aggregateId : request.AggregateId,
version : version + 1,
correlationId : request.CorrelationId,
causationId : request.CausationId,
error : e.Message,
userId : request.UserId
));
}
}
