private static PictureResizeRequest GetResizeRequest(HttpRequest req)
{
string requestBody = new StreamReader(req.Body).ReadToEnd();
PictureResizeRequest pictureResizeRequest = JsonConvert.DeserializeObject <PictureResizeRequest>(requestBody);
return(pictureResizeRequest);
}
public static async Task <IActionResult> Run([HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)] HttpRequest req,
[Blob("photos", FileAccess.Read, Connection = "StorageConnection")] CloudBlobContainer photosContainer,
[Blob("resized-photos/{rand-guid}", FileAccess.ReadWrite, Connection = "StorageConnection")] ICloudBlob resizedPhotoCloudBlob,
TraceWriter log)
{
PictureResizeRequest pictureResizeRequest = GetResizeRequest(req);
Stream photoStream = await GetSourcePhotoStream(photosContainer, pictureResizeRequest.FileName);
SetAttachmentAsContentDisposition(resizedPhotoCloudBlob, pictureResizeRequest);
Image <Rgba32> image = Image.Load(photoStream);
image.Mutate(e => e.Resize(pictureResizeRequest.RequiredWidth, pictureResizeRequest.RequiredHeight));
MemoryStream resizedPhotoStream = new MemoryStream();
image.Save(resizedPhotoStream, new JpegEncoder());
resizedPhotoStream.Seek(0, SeekOrigin.Begin);
await resizedPhotoCloudBlob.UploadFromStreamAsync(resizedPhotoStream);
return(new JsonResult(new { FileName = resizedPhotoCloudBlob.Name }));
}
public static async Task <string> ResizePicture([ActivityTrigger] PictureResizeRequest pictureResizeRequest,
[Blob("photos", FileAccess.Read, Connection = "StorageConnection")] CloudBlobContainer photosContainer,
[Blob("resized-photos/{rand-guid}", FileAccess.ReadWrite, Connection = "StorageConnection")] ICloudBlob resizedPhotoCloudBlob,
TraceWriter log)
{
log.Info("inside [FunctionName(HttpDurableResizePicture_ResizePicture)]");
var photoStream = await GetSourcePhotoStream(photosContainer, pictureResizeRequest.FileName);
SetAttachmentAsContentDisposition(resizedPhotoCloudBlob, pictureResizeRequest);
var image = Image.Load(photoStream);
image.Mutate(e => e.Resize(pictureResizeRequest.RequiredWidth, pictureResizeRequest.RequiredHeight));
var resizedPhotoStream = new MemoryStream();
image.Save(resizedPhotoStream, new JpegEncoder());
resizedPhotoStream.Seek(0, SeekOrigin.Begin);
await resizedPhotoCloudBlob.UploadFromStreamAsync(resizedPhotoStream);
return(resizedPhotoCloudBlob.Name);
}
private static void SetAttachmentAsContentDisposition(ICloudBlob resizedPhotoCloudBlob,
PictureResizeRequest pictureResizeRequest)
{
resizedPhotoCloudBlob.Properties.ContentDisposition =
$"attachment; filename={pictureResizeRequest.RequiredWidth}x{pictureResizeRequest.RequiredHeight}.jpeg";
}
