/// <summary>
/// Performs the BackgroundUploadOperation.
/// </summary>
public async Task <LiveOperationResult> ExecuteAsync()
{
Debug.Assert(this.status != OperationStatus.Completed, "Cannot execute on a completed operation.");
if (this.status == OperationStatus.Cancelled)
{
return(await this.tcs.Task);
}
this.status = OperationStatus.Started;
string filename = Path.GetFileName(this.uploadLocationOnDevice.OriginalString);
Debug.Assert(!string.IsNullOrEmpty(filename));
Uri requestUri = this.client.GetResourceUri(this.path, ApiMethod.Upload);
// TODO: Figure out how to mock out GetUploadLinkOperation elegantly so this can be tested.
this.getUploadLinkOperation = new GetUploadLinkOperation(
this.client,
requestUri,
filename,
this.overwriteOption,
null);
LiveOperationResult uploadLinkResult = await this.getUploadLinkOperation.ExecuteAsync();
var uploadRequestUri = new Uri(uploadLinkResult.RawResult, UriKind.Absolute);
var downloadLocationOnDevice =
new Uri(this.uploadLocationOnDevice.OriginalString + ".json", UriKind.RelativeOrAbsolute);
var builder = new BackgroundUploadRequestBuilder
{
RequestUri = uploadRequestUri,
AccessToken = this.client.Session.AccessToken,
UploadLocationOnDevice = this.uploadLocationOnDevice,
DownloadLocationOnDevice = downloadLocationOnDevice,
TransferPreferences = this.transferPreferences
};
this.request = builder.Build();
var eventAdapter = new BackgroundUploadEventAdapter(this.backgroundTransferService, this.tcs);
Task <LiveOperationResult> task = progress == null?
eventAdapter.ConvertTransferStatusChangedToTask(this.request) :
eventAdapter.ConvertTransferStatusChangedToTask(this.request, progress);
Debug.Assert(this.tcs.Task == task, "EventAdapter returned a different task. This could affect cancel.");
if (this.status != OperationStatus.Cancelled)
{
this.backgroundTransferService.Add(this.request);
this.requestAddedToService = true;
}
LiveOperationResult result = await task;
this.status = OperationStatus.Completed;
return(result);
}
/// <summary>
/// Attaches to the upload operation and receive the result of the operation when it is finished.
/// </summary>
/// <param name="ct">a token that is used to cancel the background upload operation.</param>
/// <param name="progress">an object that is called to report the background upload's progress.</param>
/// <returns>A Task object representing the asynchronous operation.</returns>
public Task <LiveOperationResult> AttachAsync(CancellationToken ct, IProgress <LiveOperationProgress> progress)
{
var tcs = new TaskCompletionSource <LiveOperationResult>();
ct.Register(() =>
{
// Remove from the service to cancel.
this.backgroundTransferService.Remove(this.request);
tcs.TrySetCanceled();
});
var uploadEventHandler = new BackgroundUploadEventAdapter(this.backgroundTransferService, tcs);
return(uploadEventHandler.ConvertTransferStatusChangedToTask(this.request, progress));
}
/// <summary>
/// Performs the BackgroundUploadOperation.
/// </summary>
public async Task<LiveOperationResult> ExecuteAsync()
{
Debug.Assert(this.status != OperationStatus.Completed, "Cannot execute on a completed operation.");
if (this.status == OperationStatus.Cancelled)
{
return await this.tcs.Task;
}
this.status = OperationStatus.Started;
string filename = Path.GetFileName(this.uploadLocationOnDevice.OriginalString);
Debug.Assert(!string.IsNullOrEmpty(filename));
Uri requestUri = this.client.GetResourceUri(this.path, ApiMethod.Upload);
// TODO: Figure out how to mock out GetUploadLinkOperation elegantly so this can be tested.
this.getUploadLinkOperation = new GetUploadLinkOperation(
this.client,
requestUri,
filename,
this.overwriteOption,
null);
LiveOperationResult uploadLinkResult = await this.getUploadLinkOperation.ExecuteAsync();
var uploadRequestUri = new Uri(uploadLinkResult.RawResult, UriKind.Absolute);
var downloadLocationOnDevice =
new Uri(this.uploadLocationOnDevice.OriginalString + ".json", UriKind.RelativeOrAbsolute);
var builder = new BackgroundUploadRequestBuilder
{
RequestUri = uploadRequestUri,
AccessToken = (this.client.Session != null) ? this.client.Session.AccessToken : "",
UploadLocationOnDevice = this.uploadLocationOnDevice,
DownloadLocationOnDevice = downloadLocationOnDevice,
TransferPreferences = this.transferPreferences
};
this.request = builder.Build();
var eventAdapter = new BackgroundUploadEventAdapter(this.backgroundTransferService, this.tcs);
Task<LiveOperationResult> task = progress == null ?
eventAdapter.ConvertTransferStatusChangedToTask(this.request) :
eventAdapter.ConvertTransferStatusChangedToTask(this.request, progress);
Debug.Assert(this.tcs.Task == task, "EventAdapter returned a different task. This could affect cancel.");
if (this.status != OperationStatus.Cancelled)
{
this.backgroundTransferService.Add(this.request);
this.requestAddedToService = true;
}
LiveOperationResult result = await task;
this.status = OperationStatus.Completed;
return result;
}
