public ActionResult Index(string username, string message, HttpPostedFileBase inputFile)
{
// add the guestbook entry to Azure
var azure = new GuestBookService("DataConnectionString");
azure.AddGuestBookEntry(username, message, inputFile.FileName, inputFile.ContentType, inputFile.InputStream);
// redirect back to the "GET" action
return RedirectToAction("Index");
}
public JsonResult Entries()
{
// pull out the guestbook entries
var azure = new GuestBookService("DataConnectionString");
var entries = azure.GetGuestBookEntries();
// return the entries as JSON
return Json(entries, JsonRequestBehavior.AllowGet);
}
public override void Run()
{
Trace.TraceInformation("Listening for queue messages...");
while (true)
{
try
{
// retrieve a new message from the queue
CloudQueueMessage msg = this.queue.GetMessage();
if (msg != null)
{
// parse message retrieved from queue
var json = msg.AsString;
var data = JsonConvert.DeserializeObject<GuestbookQueueMessage>(json);
var imageBlobUri = data.BlobUri.ToString();
var partitionKey = data.PartitionKey;
var rowKey = data.RowKey;
Trace.TraceInformation("Processing image in blob '{0}'.", imageBlobUri);
string thumbnailBlobUri = System.Text.RegularExpressions.Regex.Replace(imageBlobUri, "([^\\.]+)(\\.[^\\.]+)?$", "$1-thumb$2");
CloudBlob inputBlob = this.blobContainer.GetBlobReference(imageBlobUri);
CloudBlob outputBlob = this.blobContainer.GetBlobReference(thumbnailBlobUri);
using (BlobStream input = inputBlob.OpenRead())
using (BlobStream output = outputBlob.OpenWrite())
{
this.ProcessImage(input, output);
// commit the blob and set its properties
output.Commit();
outputBlob.Properties.ContentType = "image/jpeg";
outputBlob.SetProperties();
// update the entry in table storage to point to the thumbnail
GuestBookService ds = new GuestBookService("DataConnectionString");
ds.UpdateImageThumbnail(partitionKey, rowKey, thumbnailBlobUri);
// remove message from queue
this.queue.DeleteMessage(msg);
Trace.TraceInformation("Generated thumbnail in blob '{0}'.", thumbnailBlobUri);
}
}
else
{
System.Threading.Thread.Sleep(1000);
}
}
catch (StorageClientException e)
{
Trace.TraceError("Exception when processing queue item. Message: '{0}'", e.Message);
System.Threading.Thread.Sleep(5000);
}
}
}
