public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = null)] HttpRequest req,
ILogger log,
ExecutionContext context)
{
// get the config
_config = new ConfigurationBuilder()
.SetBasePath(context.FunctionAppDirectory)
.AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
.AddEnvironmentVariables()
.Build();
// Get request body
var body = await new StreamReader(req.Body).ReadToEndAsync();
if (body == null)
{
return(new BadRequestObjectResult("No body found"));
}
// deserialize the payload
var data = Newtonsoft.Json.JsonConvert.DeserializeObject <ImageUpload>(body);
if (data.Imageb64 == null)
{
return(new BadRequestObjectResult("No 'imageb64' property found in body"));
}
// get the base64 image
var img = data.Imageb64;
// convert to byte array
byte[] buffer = new byte[0];
try
{
buffer = Convert.FromBase64String(img.ToString());
}
catch
{
return(new BadRequestObjectResult("unable to read 'imageb64' data"));
}
// Upload to blob storage
if (buffer.Length == 0)
{
return(new BadRequestObjectResult("unable to upload buffer with length of 0"));
}
else
{
log.LogInformation($"Received image of size {buffer.Length} bytes");
// add the image to blob storage and get the url
string url = await BlobManager.AddOriginalImage(buffer);
// add the image to table and get the id
var imageEntity = await TableManager.AddOriginalImage(url);
// send the image entity to event grid
await EventGridManager.SendNewImageEvent(imageEntity);
// return the details to the user
return(new OkObjectResult(new ImageUploadResult {
Id = imageEntity.RowKey, Url = url
}));
}
}