public override void Run()
{
Trace.WriteLine("Backend Processing worker role started.", "Information");
int queuePollingIntervalFloor = Convert.ToInt32(RoleEnvironment.GetConfigurationSettingValue("QueuePollingIntervalFloor"));
int queuePollingIntervalCeiling = Convert.ToInt32(RoleEnvironment.GetConfigurationSettingValue("QueuePollingIntervalCeiling"));
int currentInterval = queuePollingIntervalFloor;
// connect to repositories
contactQueue = new ContactQueue();
contactRepository = new ContactRepository();
SQLContacts = new SQLContactRepository();
while (true)
{
// grab message
ContactQueueMessage msg = contactQueue.GetMessage();
if (msg != null)
{
Contact contact = contactRepository.GetFromFacebookId(msg.FacebookId);
// email person
SendEmail(contact);
// map to sqlcontact object and store in sql
StoreContact(contact);
// remove message from queue now that we are done with it
contactQueue.DeleteMessage(msg);
// adjust queue polling interval to floor to speed up since we found something in the queue
currentInterval = queuePollingIntervalFloor;
}
else
{
if (currentInterval < queuePollingIntervalCeiling)
currentInterval = currentInterval * 2;
// the doubling of the interval may have pushed it above our ceiling
if (currentInterval > queuePollingIntervalCeiling)
currentInterval = queuePollingIntervalCeiling;
}
Thread.Sleep(TimeSpan.FromSeconds(currentInterval));
Trace.WriteLine("Working. Polling Interval in seconds is " + currentInterval.ToString(), "Information");
}
}