public static void ProcessImageQueueMessage(
[QueueTrigger("images")] Common.Entities.Image img,
[Blob("images/uploads/{Id}")] CloudBlockBlob uploadedBlob,
[Blob("images/handled/{Id}.img")] CloudBlockBlob outputBlob,
[Blob("images/handled/{Id}_thumbnail.img")] CloudBlockBlob outputThumbnailBlob,
[Table("images")] CloudTable imageTable,
[ServiceBus("images")] out string message,
TextWriter log)
{
log.WriteLine("Got message from queue to process image: " + img.Source + ", with ID: " + img.RowKey);
using (var input = new MemoryStream())
{
uploadedBlob.DownloadToStream(input);
using (var output = outputThumbnailBlob.OpenWrite())
{
ProcessImage(img.ContentType, input, output, quality: 70, maxWidth: 150);
outputThumbnailBlob.Properties.ContentType = img.ContentType;
outputThumbnailBlob.Properties.CacheControl = "public, max-age=31536000"; // 1 year cache
}
log.WriteLine("Created thumbnail for " + img.Id);
using (var output = outputBlob.OpenWrite())
{
ProcessImage(img.ContentType, input, output, quality: 90, maxWidth: 1920);
outputBlob.Properties.ContentType = img.ContentType;
outputBlob.Properties.CacheControl = "public, max-age=31536000"; // 1 year cache
}
}
log.WriteLine("Created full image for " + img.Id);
// Insert to table storage
img.Source = outputBlob.Uri.AbsolutePath;
img.Thumbnail = outputThumbnailBlob.Uri.AbsolutePath;
var opp = TableOperation.Insert(img);
imageTable.Execute(opp);
log.WriteLine("Inserted outputted image for " + img.Id);
//using (var m = new MemoryStream())
//{
// using (var t = new StreamWriter(m))
// {
// t.Write("ImageUploaded");
// t.Flush();
// }
// message = new BrokeredMessage(m);
//}
message = "ImageUploaded";
uploadedBlob.DeleteIfExists();
log.WriteLine("Message to service bus assigned");
}
public async Task ImageUploadCompleteAsync(string contentType, string storageUrl)
{
if (string.IsNullOrEmpty(contentType))
{
throw new ArgumentNullException("contentType");
}
if (string.IsNullOrEmpty(storageUrl))
{
throw new ArgumentNullException("storageUrl");
}
var uri = new Uri(storageUrl);
var id = Path.GetFileNameWithoutExtension(uri.AbsolutePath);
var img = new Common.Entities.Image {
PartitionKey = Guid.NewGuid().ToString("N"), RowKey = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss"), Id = id, ContentType = contentType
};
var message = JsonConvert.SerializeObject(img);
var queueMessage = new CloudQueueMessage(message);
await _queue.AddMessageAsync(queueMessage);
}
