public async Task <ActionResult> Create([Bind(Include = "fileId,destinationEmail")] FileConversionCommon.File file, HttpPostedFileBase uploadFile)
{
CloudBlockBlob imageBlob = null;
// A production app would implement more robust input validation.
// For example, validate that the image file size is not too large.
if (ModelState.IsValid)
{
if (uploadFile != null && uploadFile.ContentLength != 0)
{
imageBlob = await UploadAndSaveBlobAsync(uploadFile);
file.fileURL = imageBlob.Uri.ToString();
}
file.postedDate = DateTime.Now;
db.Files.Add(file);
await db.SaveChangesAsync();
Trace.TraceInformation("Created AdId {0} in database", file.fileId);
if (imageBlob != null)
{
var queueMessage = new CloudQueueMessage(file.fileId.ToString());
await filesQueue.AddMessageAsync(queueMessage);
Trace.TraceInformation("Created queue message for AdId {0}", file.fileId);
}
return(RedirectToAction("Index"));
}
return(View(file));
}
private void ProcessQueueMessage(CloudQueueMessage msg)
{
Trace.TraceInformation("Processing queue message {0}", msg);
// Queue message contains AdId.
var fileId = int.Parse(msg.AsString);
FileConversionCommon.File f = db.Files.Find(fileId);
if (f == null)
{
throw new Exception(String.Format("AdId {0} not found, can't create thumbnail", fileId.ToString()));
}
Uri blobUri = new Uri(f.fileURL);
string blobName = blobUri.Segments[blobUri.Segments.Length - 1];
CloudBlockBlob inputBlob = this.filesBlobContainer.GetBlockBlobReference(blobName);
string thumbnailName = Path.GetFileNameWithoutExtension(inputBlob.Name) + "thumb.jpg";
CloudBlockBlob outputBlob = this.filesBlobContainer.GetBlockBlobReference(thumbnailName);
using (Stream input = inputBlob.OpenRead())
using (Stream output = outputBlob.OpenWrite())
{
ConvertImageToThumbnailJPG(input, output);
outputBlob.Properties.ContentType = "image/jpeg";
}
Trace.TraceInformation("Generated thumbnail in blob {0}", thumbnailName);
f.fileURL = outputBlob.Uri.ToString();
db.SaveChanges();
Trace.TraceInformation("Updated thumbnail URL in database: {0}", f.fileURL);
// Remove message from queue.
this.filesQueue.DeleteMessage(msg);
}
public async Task <ActionResult> DeleteConfirmed(int id)
{
FileConversionCommon.File file = await db.Files.FindAsync(id);
db.Files.Remove(file);
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}
public async Task <ActionResult> Edit([Bind(Include = "fileId,fileURL,convertedFilelURL,postedDate,destinationEmail")] FileConversionCommon.File file)
{
if (ModelState.IsValid)
{
db.Entry(file).State = EntityState.Modified;
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}
return(View(file));
}
// GET: Files/Details/5
public async Task <ActionResult> Details(int?id)
{
if (id == null)
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
FileConversionCommon.File file = await db.Files.FindAsync(id);
if (file == null)
{
return(HttpNotFound());
}
return(View(file));
}
