public async Task WriteAsync(string key, ICachedImage cachedImage)
{
ImageMetadataModel model = new ImageMetadataModel()
{
Created = cachedImage.Metadata.Created,
Cache = cachedImage.Metadata.Cache,
Hash = cachedImage.Metadata.Hash,
Key = cachedImage.Metadata.Key,
LoaderSource = cachedImage.Metadata.LoaderSource,
Filters = cachedImage.Metadata.Filters,
LoaderType = cachedImage.Metadata.LoaderType,
MimeType = cachedImage.Metadata.MimeType,
Width = cachedImage.Metadata.Width,
Height = cachedImage.Metadata.Height,
DPR = cachedImage.Metadata.DPR,
FileLength = cachedImage.Metadata.FileLength
};
//upload image metadata
await ImageMetadatas.ReplaceOneAsync(Builders <ImageMetadataModel> .Filter.Where(x => x.Key == key), model, new ReplaceOptions()
{
IsUpsert = true
});
using (Stream cachedImageStream = await cachedImage.OpenReadAsync())
{
//upload transformed image
await ImageBuffer.UploadFromStreamAsync(key, cachedImageStream);
}
}
public async Task <ICachedImage> ReadAsync(string key)
{
ImageMetadataModel foundMetadata = await ImageMetadatas
.AsQueryable()
.FirstOrDefaultAsync(x => x.Key == key);
if (foundMetadata == null)
{
return(null);
}
CachedImage cachedImage = new CachedImage(foundMetadata, async() => await ImageBuffer.OpenDownloadStreamByNameAsync(key));
return(cachedImage);
}
