/// <summary>
/// Save the image as a png in a public bucket.
/// </summary>
/// <param name="image"></param>
/// <param name="id"></param>
/// <param name="accountId"></param>
/// <returns></returns>
private async Task <MediaItemStorageLocation> SaveImage(Image image, Guid id, Guid accountId)
{
ImageFormat format = ImageFormat.Bmp;
DateTime date = SystemDate.UtcNow;
string imageName = string.Format("{0}/{1}/{2}/{3}/{4}.bmp",
accountId,
date.Year,
date.Month,
date.Day,
id);
using (MemoryStream stream = new MemoryStream())
{
// Save to png...
// unless the original was gif to preserve animated gifs?
image.Save(stream, format);
stream.Position = 0;
var mediaItemStorageLocation = new MediaItemStorageLocation
{
Bucket = _rawImageBucket,
ContentType = "image/bmp",
ItemType = MediaItemType.UploadedItem.ToString(),
ContentLength = (int)stream.Length,
Filename = imageName,
};
await _fileStore.SaveAsync(mediaItemStorageLocation, stream);
return(mediaItemStorageLocation);
}
}
private async Task DeleteUploadedImageAsync(MediaItem mediaItem)
{
MediaItemStorageLocation storageLocation = mediaItem.StorageLocations.First();
Logger.LogMessage("Deleting original uploaded image: {0}", storageLocation.Filename);
await _fileStore.DeleteAsync(storageLocation);
mediaItem.StorageLocations.Clear();
}
public async Task DeleteAsync(MediaItemStorageLocation storageLocation)
{
try
{
await _client.DeleteObjectAsync(storageLocation.Bucket, storageLocation.Filename);
}
catch (Exception ex)
{
Logger.LogException(ex, "Failed to deleted file from S3. Bucket: " + storageLocation + ", file: " + storageLocation.Filename);
// Just sink the exception.
}
}
public async Task SaveAsync(MediaItemStorageLocation storageLocation, Stream stream)
{
Logger.LogMessage("Saving media item to bucket: '{0}', path: {1}", storageLocation.Bucket, storageLocation.Filename);
var request = new PutObjectRequest
{
BucketName = storageLocation.Bucket,
ContentType = storageLocation.ContentType,
InputStream = stream,
Key = storageLocation.Filename
};
await _client.PutObjectAsync(request);
}
/// <summary>
/// Save the image as a png in a public bucket.
/// </summary>
/// <param name="request"></param>
/// <param name="mediaItemType"></param>
/// <param name="image"></param>
/// <returns></returns>
private async Task <MediaItemStorageLocationDto> SaveImage(ProcessMediaItemRequestEvent request,
MediaItemType mediaItemType,
Image image)
{
Guid id = request.Id;
// Default encoding as png for everything
// except the original image.
ImageFormat format = ImageFormat.Jpeg; // ImageFormat.Png; // TODO: Use gif if original was gif.
// Try to preserve the original content type.
if (mediaItemType == MediaItemType.OriginalItem || request.PreserveImageFormat)
{
format = GetFormat(request.StorageLocation.ContentType);
}
DateTime date = DateTime.UtcNow;
string contentType = GetContentType(format);
string imageName = string.Format("{0}/{1}/{2}/{3}/{4}.{5}",
date.Year,
date.Month,
date.Day,
mediaItemType,
id,
format);
using (MemoryStream stream = new MemoryStream())
{
// Save to png...
// unless the original was gif to preserve animated gifs?
image.Save(stream, format);
stream.Position = 0;
var mediaItemStorageLocation = new MediaItemStorageLocation
{
Bucket = _imageBucket,
ContentType = contentType,
ItemType = mediaItemType.ToString(),
ContentLength = (int)stream.Length,
Filename = imageName,
};
await _fileStore.SaveAsync(mediaItemStorageLocation, stream);
return(Mapper.Map <MediaItemStorageLocationDto>(mediaItemStorageLocation));
}
}
/// <summary>
/// Publish a request to convert the media at the storage location
/// into the appropriate media items (scaled down etc)
/// </summary>
/// <param name="mediaItem"></param>
/// <param name="storageLocation"></param>
/// <returns></returns>
private async Task PublishProcessMediaItemAsync(MediaItem mediaItem, MediaItemStorageLocation storageLocation, bool preserveImageFormat)
{
ProcessMediaItemRequestEvent requestEvent = new ProcessMediaItemRequestEvent
{
Id = mediaItem.Id,
StorageLocation = new MediaItemStorageLocationDto
{
Bucket = storageLocation.Bucket,
ContentLength = storageLocation.ContentLength,
ContentType = storageLocation.ContentType,
Filename = storageLocation.Filename,
ItemType = (MediaItemType)Enum.Parse(typeof(MediaItemType), storageLocation.ItemType),
},
PreserveImageFormat = preserveImageFormat
};
await _bus.PublishAsync(requestEvent);
}
public async Task <Stream> LoadStreamAsync(MediaItemStorageLocation storageLocation)
{
try
{
var request = new GetObjectRequest
{
BucketName = storageLocation.Bucket,
Key = storageLocation.Filename,
};
GetObjectResponse response = await _client.GetObjectAsync(request);
return(response.ResponseStream);
}
catch (Exception ex)
{
Logger.LogException(ex, "Failed to load attachment from S3. Url: " + storageLocation);
throw;
}
}
public async Task OnRequest(CreateImageRequestEvent request)
{
Logger.LogMessage("Creating image from data. Width: {0}, Height: {1}", request.Width, request.Height);
try
{
request.UniqueMediaName = request.UniqueMediaName ?? "";
MediaItemStorageLocation storageLocation = await CreateS3FileAsync(request);
var mediaItem = new MediaItem
{
Id = request.Id,
AccountId = request.User.AccountId,
UserId = request.User.UserId,
Caption = request.Caption,
//ContentType = request. .ContentType,
Location = Mapper.Map <LocationDetails>(request.Location),
Tags = request.Tags,
Description = request.Description,
//OriginalStorageLocation = request.StorageLocation
UniqueMediaName = request.UniqueMediaName,
UniqueMediaKey = string.Format("{0}-{1}", request.User.AccountId, request.UniqueMediaName.ToLower()),
StorageLocations = new List <MediaItemStorageLocation> {
storageLocation
},
HistoryType = MediaHistoryType.Pending,
};
// After status post so the status post Id can be included for reference
await _mediaService.SaveAsync(mediaItem);
await PublishProcessMediaItemAsync(mediaItem, storageLocation, true); //request.PreserveImageFormat);
}
catch (Exception ex)
{
Logger.LogException(ex, "Failed to add new image from raw data.");
}
}
