// Travel agency's thread method
public void runTravelAgency()
{
Console.Write("\n {0} is inside runTravelAgency() ", Thread.CurrentThread.Name);
// declaring some variables that would be local to each thread
DateTime orderTimeStamp;
for (int i = 0; i < 70; i++)
{
Thread.Sleep(800);
// travel agency is event driven, hence checking if an event occurred only then proceeding with creating order
if (hasPriceCutEventHappened)
{
OrderClass orderObject = new OrderClass();
orderObject.SenderId = Thread.CurrentThread.Name;
orderObject.CardNo = cardNo;
orderObject.ReceiverID = receiverId;
orderObject.NumTickets = numOfTickets;
orderObject.UnitPrice = ticketUnitPrice;
string orderString = EncoderDecoderClass.encodeOrderObject(orderObject);
Console.WriteLine(" {0} built order: {1}", Thread.CurrentThread.Name, orderString);
// saving timestamp of the order before sending it to buffer
orderTimeStamp = DateTime.Now;
// travel agency sends the encoded string to one of the free cells in buffer
buffer.addToBuffer(orderString);
// setting the flag as false as the order for this event has been added to buffer
hasPriceCutEventHappened = false;
}
}
}
// thread method of airline class
public void runAirline()
{
Console.Write(" {0} is inside runAirline() \n", Thread.CurrentThread.Name);
// declaring price cut counter for each airline thread
int priceCutCounter = 0;
double baseTicketUnitPrice = 0;
for (int i = 0; i < 70; i++)
{
Thread.Sleep(300);
// setting ticket price for all airline threads
if (Thread.CurrentThread.Name.Equals("Airline[1]"))
{
baseTicketUnitPrice = Airline_1_Price;
}
if (Thread.CurrentThread.Name.Equals("Airline[2]"))
{
baseTicketUnitPrice = Airline_2_Price;
}
if (Thread.CurrentThread.Name.Equals("Airline[3]"))
{
baseTicketUnitPrice = Airline_3_Price;
}
// fetching new price from pricing model for each airline thread
double newPrice = getPriceFromPricingModel();
Console.WriteLine(" {0} offered New Price is {1} ", Thread.CurrentThread.Name, newPrice);
// calling change price method that will change the ticket price and emit price cut event in case of price drop
priceCutCounter = changePrice(baseTicketUnitPrice, newPrice, Thread.CurrentThread.Name, priceCutCounter);
// after 20 price cuts an airline thread will terminate
if (priceCutCounter < 20)
{
OrderClass orderObject = null;
// removing a order cell from buffer by sending the current thread's name
string orderString = buffer.removeFromBuffer(Thread.CurrentThread.Name);
// checking if the orderString received from buffer is not null and then proceeding with order processing
if (orderString != null)
{
Console.WriteLine(" {0} has removed order: {1}", Thread.CurrentThread.Name, orderString);
orderObject = EncoderDecoderClass.decodeOrderObject(orderString);
// sending the order object for order processing
OrderProcessingClass orderProc = new OrderProcessingClass(orderObject);
Thread orderProcessThread = new Thread(new ThreadStart(orderProc.runOrderProcessing));
orderProcessThread.Start();
}
}
else
{
Console.WriteLine(" Stopping {0} because it's price counter reached {1}", Thread.CurrentThread.Name, priceCutCounter);
break; // the airline thread exits when it completes 20 price cuts
}
}
}
