private async Task CreatePostAsync(Guid id, CreatePostRequest createPostRequest)
{
using (_logger.BeginScope($"Creating post for day {createPostRequest.DayNumber}"))
{
var sw = Stopwatch.StartNew();
var nextPostIdTask = _postsRepository.GetNextPostIdAsync();
var timeStamp = (int)(DateTime.UtcNow - DateTime.UnixEpoch).TotalSeconds;
_logger.LogInformation($"timestamp for post = {timeStamp}");
var photoAttachments = new List <PhotoAttachment>();
var photoTasks = new List <Task>();
_logger.LogInformation($"# of photos to process = {createPostRequest.Photos.Count}");
for (var photoIndex = 0; photoIndex < createPostRequest.Photos.Count; photoIndex++)
{
var originalKey = $"posts/{timeStamp}/pa-original-{photoIndex}.jpg";
var mobileKey = $"posts/{timeStamp}/pa-mobile-{photoIndex}.jpg";
var previewKey = $"posts/{timeStamp}/pa-preview-{photoIndex}.jpg";
var photoAttachment = new PhotoAttachment();
var photoBytes = createPostRequest.Photos[photoIndex];
var originalResizeTask = ResizeAndUploadPhotoAsync(photoBytes, 2560, originalKey).ContinueWith(task =>
{
photoAttachment.Width = task.Result.width;
photoAttachment.Height = task.Result.height;
photoAttachment.Src = task.Result.location;
});
var mobileResizeTask = ResizeAndUploadPhotoAsync(photoBytes, 1280, mobileKey).ContinueWith(task =>
{
photoAttachment.MobileSrc = task.Result.location;
});
var previewResizeTask = ResizeAndUploadPhotoAsync(photoBytes, 640, previewKey).ContinueWith(task =>
{
photoAttachment.PreviewSrc = task.Result.location;
});
var index = photoIndex;
var batchTask = Task.WhenAll(originalResizeTask, mobileResizeTask, previewResizeTask).ContinueWith(t =>
{
_eventsMap[id].AddEvent($"Photo attachment #{index + 1} was processed.");
});
photoTasks.Add(batchTask);
photoAttachments.Add(photoAttachment);
}
await Task.WhenAll(photoTasks.Append(nextPostIdTask));
var post = new Post(nextPostIdTask.Result, createPostRequest.Text, createPostRequest.Hashtag, timeStamp, createPostRequest.DayNumber, createPostRequest.VideoUrl, photoAttachments);
await _postsRepository.PutItemAsync(post);
_logger.LogInformation($"post created within {(int) sw.ElapsedMilliseconds} ms");
_eventsMap[id].Complete();
}
}
