internal async Task <FileUploadSasUriResponse> GetFileUploadSasUriAsync(FileUploadSasUriRequest request, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
return(await _httpClientHelper.PostAsync <FileUploadSasUriRequest, FileUploadSasUriResponse>(
GetRequestUri(_deviceId, CommonConstants.BlobUploadPathTemplate, null),
request,
ExceptionHandlingHelper.GetDefaultErrorMapping(),
null,
cancellationToken).ConfigureAwait(false));
}
internal async Task UploadToBlobAsync(string blobName, Stream source, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var fileUploadRequest = new FileUploadSasUriRequest()
{
BlobName = blobName
};
FileUploadSasUriResponse fileUploadResponse = await _httpClientHelper.PostAsync <FileUploadSasUriRequest, FileUploadSasUriResponse>(
GetRequestUri(_deviceId, CommonConstants.BlobUploadPathTemplate, null),
fileUploadRequest,
ExceptionHandlingHelper.GetDefaultErrorMapping(),
null,
cancellationToken).ConfigureAwait(false);
string putString = string.Format(
CultureInfo.InvariantCulture,
"https://{0}/{1}/{2}{3}",
fileUploadResponse.HostName,
fileUploadResponse.ContainerName,
Uri.EscapeDataString(fileUploadResponse.BlobName), // Pass URL encoded device name and blob name to support special characters
fileUploadResponse.SasToken);
var notification = new FileUploadCompletionNotification();
try
{
// 2. Use SAS URI to send data to Azure Storage Blob (PUT)
var blob = new CloudBlockBlob(new Uri(putString));
Task uploadTask = blob.UploadFromStreamAsync(source);
await uploadTask.ConfigureAwait(false);
notification.CorrelationId = fileUploadResponse.CorrelationId;
notification.IsSuccess = uploadTask.IsCompleted;
notification.StatusCode = uploadTask.IsCompleted ? 0 : -1;
notification.StatusDescription = uploadTask.IsCompleted ? null : "Failed to upload to storage.";
// 3. POST to IoTHub with upload status
await _httpClientHelper.PostAsync(
GetRequestUri(_deviceId, CommonConstants.BlobUploadStatusPathTemplate + "notifications", null),
notification,
ExceptionHandlingHelper.GetDefaultErrorMapping(),
null,
cancellationToken).ConfigureAwait(false);
}
catch (Exception ex) when(!ex.IsFatal() && !(ex is OperationCanceledException))
{
// 3. POST to IoTHub with upload status
notification.IsSuccess = false;
notification.StatusCode = -1;
notification.StatusDescription = ex.Message;
await _httpClientHelper
.PostAsync(
GetRequestUri(
_deviceId,
CommonConstants.BlobUploadStatusPathTemplate + "notifications/" + fileUploadResponse.CorrelationId,
null),
notification,
ExceptionHandlingHelper.GetDefaultErrorMapping(),
null,
cancellationToken)
.ConfigureAwait(false);
throw;
}
}