protected override async Task Process()
{
var file = await GetFileAsync();
var fileOutput = await API.File.PutAsync(new FileModel
{
Identifier = new FileIdentifier(file.Identifier as FolderIdentifier, Guid.NewGuid().ToString()),
MimeType = "text/plain",
Name = "Voicebase output"
}
.InitializeEmptyMetadata()
.Write(MetadataKeyConstants.HIDDEN, true)
.Write(MetadataKeyConstants.CHILDOF, file.Identifier));
var callbackUrl = await API.Queue.CreateCallbackAsync(new CallbackModel
{
FileIdentifier = fileOutput.Identifier,
Queue = "Voicebase.Callback",
Token = API.Token
});
var alternativeViews = file.Read <List <AlternativeView> >(MetadataKeyConstants.ALTERNATIVE_VIEWS);
var mp3 = alternativeViews?.FirstOrDefault(a => a.MimeType == "audio/mp3");
var targetFileIdentifier = mp3 == null
? file.Identifier
: mp3.FileIdentifier;
using (var voicebase = new VoiceBaseClient(new Uri(Configuration.VoicebaseURL), Configuration.VoicebaseToken))
await API.File.DownloadAsync(targetFileIdentifier, async (stream, cancel) =>
{
var mediaID = await voicebase.UploadMedia(stream, callbackUrl);
await API.ConcurrencyRetryBlock(async() =>
{
file = await GetFileAsync();
file.Write("attributes.voicebase.status", "processing");
file.Write("attributes.voicebase.mediaid", mediaID);
file.Write("attributes.requestedBy", CurrentMessage.RequestedBy);
await API.File.PutAsync(file);
});
});
}
protected override async Task Process()
{
// get the callback response file
var file = await API.File.GetAsync(CurrentMessage.FileIdentifier);
var originalFileIdentifier = file.Read <FileIdentifier>(MetadataKeyConstants.CHILDOF);
var originalFile = await API.File.GetAsync(originalFileIdentifier);
var maxDepth = 10;
var parent = originalFile.Read <FileIdentifier>(MetadataKeyConstants.CHILDOF);
while (parent != null && maxDepth-- > 0)
{
originalFileIdentifier = parent;
originalFile = await API.File.GetAsync(parent);
parent = originalFile.Read <FileIdentifier>(MetadataKeyConstants.CHILDOF);
}
// download the callback response file and deserialize it
var obj = await API.File.DownloadAsAsync <MediaResponse>(CurrentMessage.FileIdentifier);
var message = $"Transcription of file {originalFile.Name} completed";
await API.Log.PostAsync(new AuditLogEntryModel
{
Identifier = new AuditLogEntryIdentifier(originalFileIdentifier),
FileIdentifier = originalFileIdentifier,
ActionType = "Transcription",
Description = message,
Details = JsonConvert.SerializeObject(new
{
obj.MediaID,
obj.Status,
obj.Length
}),
InitiatorUserIdentifier = originalFile.Read <UserIdentifier>("attribute.requestedBy") ?? API.UserIdentifier,
Generated = DateTime.UtcNow,
UserAgent = API.UserAgent
});
// grab the VTT formatted transcript
var vttContents = Convert.FromBase64String(obj.Transcript.AlternateFormats.First(a => a.Format == "webvtt").Data);
// upload the vtt transcript
var vttFile = new FileModel
{
Identifier = new FileIdentifier(
originalFileIdentifier as FolderIdentifier,
Guid.NewGuid().ToString()
),
Name = Path.GetFileNameWithoutExtension(originalFile.Name) + ".vtt",
MimeType = "text/vtt"
};
vttFile
.InitializeEmptyMetadata()
.Write(MetadataKeyConstants.CHILDOF, originalFileIdentifier)
.Write(MetadataKeyConstants.HIDDEN, true);
vttFile = await API.File.UploadAsync(vttFile, Encoding.UTF8.GetString(vttContents));
await API.ConcurrencyRetryBlock(async() =>
{
// tag the original
originalFile = await API.File.GetAsync(originalFileIdentifier);
var views = originalFile.Read(MetadataKeyConstants.ALTERNATIVE_VIEWS, defaultValue: new List <AlternativeView>());
views.Add(new AlternativeView
{
FileIdentifier = vttFile.Identifier,
MimeType = "text/vtt",
Name = "Voicebase WebVTT",
});
originalFile.Write(MetadataKeyConstants.ALTERNATIVE_VIEWS, views);
originalFile.Write("attributes.voicebase.status", "complete");
await API.File.PutAsync(originalFile);
});
using (var voicebase = new VoiceBaseClient(new Uri(Configuration.VoicebaseURL), Configuration.VoicebaseToken))
await voicebase.DeleteMediaAsync(obj.MediaID);
}