public void GetImage()
{
var bytes = DocumentDbHelper
.GetImageAsync("5f34f4d0-8f0c-4b95-9b86-64bba863f74a")
.Result
.Bytes;
}
public async Task <HttpResponseMessage> GetById(string id)
{
var image = await DocumentDbHelper
.GetImageAsync(id);
if (image == null)
{
return(new HttpResponseMessage(HttpStatusCode.NotFound));
}
var result = new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new ByteArrayContent(
image.Bytes
)
};
result.Headers.CacheControl = new CacheControlHeaderValue
{
Public = true,
MaxAge = TimeSpan.FromMinutes(30)
};;
result.Content.Headers.ContentType =
// bit of an assumption but will suffice for the demo
new MediaTypeHeaderValue("image/jpg");
return(result);
}
public void TestDocumentDbWrangling()
{
var newGuid = Guid.NewGuid();
var image = new Image
{
Created = DateTime.Now,
Description = "Test description",
id = newGuid,
Name = "Test name",
// use our fluffy test image
Bytes = File.ReadAllBytes("Images/dog-medium-landing-hero.jpg")
};
Console.WriteLine($"{newGuid} written to database!");
DocumentDbHelper.AddImageToDbAsync(
image
).Wait();
// get the image back
var imageBack = DocumentDbHelper
.GetImageAsync($"{newGuid}")
.Result;
imageBack.Created = DateTime.Now;
imageBack.IllegalWatermark = true;
// Run the custom vision service
//CustomerVisionHelper
// .RunCustomVisionService(imageBack);
// can we call out to cognitive services?
VisionApiHelper
.AdornImageWithVisionMetadataAsync(imageBack);
// change date and update the image
DocumentDbHelper
.UpdateImage(imageBack);
// delete the image
// get the image back
DocumentDbHelper
.DeleteImageAsync($"{newGuid}").Wait();
}
public static void Run(
[ServiceBusTrigger("images", AccessRights.Manage, Connection = "ServiceBusConnection")]
string imageId, TraceWriter log)
{
log.Info($"New image detected from the queue: {imageId}");
var image = DocumentDbHelper
.GetImageAsync($"{imageId}").Result;
// if we can't find it in the database, do nothing
if (image == null)
{
log.Info($"This image wasn't found in the database.");
return;
}
VisionApiHelper
.AdornImageWithVisionMetadataAsync(
image
);
CustomerVisionHelper
.RunCustomVisionService(image);
// insert azureML code here
//ThumbnailHelper
// .ApplyThumbnail(image);
DocumentDbHelper
.UpdateImage(image);
if (image.Tags == null)
{
return;
}
log.Info($"Adorned image tags to it from cognitive services ({string.Join(",", image.Tags)})");
log.Info($"And this description: ({image.PredictedCaption})");
}
public async Task <IHttpActionResult> GetImages()
{
var images = DocumentDbHelper
.GetAllImageIds()
.Select(async ev => await DocumentDbHelper.GetImageAsync(ev))
.ToArray();
await Task.WhenAll(tasks : images);
var i2 = images
.Select(t => t.Result)
.Where(i => !string.IsNullOrWhiteSpace(i.PredictedCaption));
// null off the binary data for all images
foreach (var image in i2)
{
image.Bytes = null;
}
return(Ok(i2));
}