public FullItem RetrieveForProcessing()
{
FullItem rawItem = null;
var item = _queue.Dequeue();
if (item != null) {
rawItem = new FullItem(item);
rawItem.File = _rawBlob.Retrieve(item.ResourceId);
}
return rawItem;
}
//purposefully slow processing method w/ less than ideal memory usage to simulate real work
public FullItem ProcessItem(FullItem rawItem)
{
string originalData = new UTF8Encoding().GetString(rawItem.File);
string[] dataRows = originalData.Split('\n');
List<string> result = new List<string>();
foreach (string s in dataRows) {
string s2 = s;
foreach (char c in s.ToCharArray()) {
s2 = s2.Replace(c.ToString(), c.ToString().ToUpper());
}
result.Add(s2);
}
rawItem.MarkAsProcessed();
rawItem.File = new UTF8Encoding().GetBytes(String.Join("\n", result));
return rawItem;
}
public ActionResult AddFile(HttpPostedFileBase file)
{
if (file != null && file.ContentLength > 0) {
var item = new FullItem() {
ResourceId = Guid.NewGuid(),
Received = DateTime.Now.ToUniversalTime(),
IsProcessed = false,
FileName = file.FileName
};
item.ReadFileFromStream(file.InputStream);
new ItemStore(_storageLocator).AddNewItem(item);
TempData["file"] = file.FileName + " uploaded and queued for processing.";
}
else {
TempData["file"] = "Processor ignores empty files, sorry.";
}
return RedirectToAction("Index");
}
public void StoreFinishedItem(FullItem item)
{
_finishedBlob.Create(item.ResourceId, item.File);
_rawBlob.Delete(item.ResourceId);
_table.Update(item.AsSummary());
}
public void AddNewItem(FullItem item)
{
_rawBlob.Create(item.ResourceId, item.File);
_queue.Enqueue(item.AsSummary());
_table.Create(item.AsSummary());
}