public static void Enqueue(IDownloadRequest request)
{
_requests.Add(request);
if (_requests.Count > 1)
{
// If more than one request is in queue, it means we already have a worker running!
return;
}
// .. Otherwise, we're free to start a worker that will immediately process the incoming data.
_token = new CancellationTokenSource();
Task.Factory.StartNew(() =>
{
while (!_token.IsCancellationRequested)
{
if (_usedSlots == SynchronousDownloadCount)
{
continue;
}
// Exit early if no request was found
if (!_requests.TryTake(out var newRequest, 5000, _token.Token))
{
return;
}
newRequest.OnProgress += downloadStatus =>
{
switch (downloadStatus)
{
case DownloadStatus.Downloading:
++_usedSlots;
break;
case DownloadStatus.Done:
--_usedSlots;
break;
}
OnProgress?.Invoke(newRequest, downloadStatus);
};
newRequest.CreatePendingIntents(Application.Context);
// Non-blocking call to allow for simultaneous downloads
newRequest.Process(_token).ConfigureAwait(false);
}
}, _token.Token);
}
public SourceRepository(IDownloadRequest downloadRequest)
{
_downloadRequest = downloadRequest;
}
public SourceRepository(IDownloadRequest downloadRequest)
{
_downloadRequest = downloadRequest;
}