private List<UserView> UsersThatNotAnsweredTwoPhaseCommit(Reservation reservationn, bool retry)
{
List<UserView> listOfUsers = new List<UserView>();
List<UserView> orignalList = reservationn.getUserList();
List<UserView> auxList = new List<UserView>();
if (retry == false)
{
Console.WriteLine("No retry");
foreach (KeyValuePair<int, ReservationMessage> answers in threadResponses)
{
foreach (KeyValuePair<String, String> index in answers.Value.response2PC)
{
UserView u = GetKnownUserByName(index.Key);
//if the dicionary is empty then the user has not answered
if (index.Value.Equals("Timeout"))
{
Console.WriteLine("User " + u.getName() + " has not answered");
listOfUsers.Add(u);
}
else
auxList.Add(u); //if the user has answered add it to the aux list
}
}
}
else
{
Console.WriteLine("Retry.");
foreach (KeyValuePair<String, ReservationMessage> answers in threadResponses2)
{
foreach (KeyValuePair<String,String> index in answers.Value.response2PC)
{
UserView u = GetKnownUserByName(index.Key);
//if the dicionary is empty then the user has not answered
if (index.Value.Equals("Timeout"))
{
Console.WriteLine("User " + u.getName() + " has not answered");
listOfUsers.Add(u);
}
else
auxList.Add(u); //if the user has answered add it to the aux list
}
}
}
foreach (UserView u in orignalList)
{
if (!IsUserInTheList(u, auxList) && !IsUserInTheList(u, listOfUsers))
listOfUsers.Add(u);
}
Console.WriteLine("users that have not answered...");
foreach (UserView uka in listOfUsers)
{
Console.WriteLine(uka.getName());
}
return listOfUsers;
}
private List<UserView> UsersThatNotAnsweredSendReservationCall(Reservation originalReservation, bool retrySend)
{
Console.WriteLine("[Calling] UsersThatNotAnsweredSendReservationCall");
List<UserView> listOfUsers = new List<UserView>();
List<UserView> orignalList = originalReservation.getUserList();
List<UserView> auxList = new List<UserView>();
if (retrySend == false) {
Console.WriteLine("No retry");
foreach (KeyValuePair<int, ReservationMessage> answers in threadResponses) {
foreach (KeyValuePair<String, Dictionary<int, String>> index in answers.Value.GetAllResponses()) {
UserView u = GetKnownUserByName(index.Key);
//if the dicionary is empty then the user has not answered
if (index.Value.Count == 0) {
Console.WriteLine("User " + u.getName() + " has not answered");
listOfUsers.Add(u);
}
else
auxList.Add(u); //if the user has answered add it to the aux list
}
}
}
else {
Console.WriteLine("Retry.");
foreach (KeyValuePair<String, ReservationMessage> answers in threadResponses2) {
foreach (KeyValuePair<String, Dictionary<int, String>> index in answers.Value.GetAllResponses()) {
UserView u = GetKnownUserByName(index.Key);
//if the dicionary is empty then the user has not answered
if (index.Value.Count == 0)
{
Console.WriteLine("User " + u.getName() + " has not answered");
listOfUsers.Add(u);
}
else
{
Console.WriteLine(u.getName() + " has answered");
auxList.Add(u); //if the user has answered add it to the aux list
}
}
}
}
foreach (UserView u in orignalList) {
if (!IsUserInTheList(u, auxList) && !IsUserInTheList(u, listOfUsers))
listOfUsers.Add(u);
}
Console.WriteLine("users that have not answered...");
foreach (UserView uka in listOfUsers) {
Console.WriteLine(uka.getName());
}
return listOfUsers;
}
private Reservation DeleteAbortedSlotsFromReservation(Reservation reservation)
{
Console.WriteLine("[Calling] DeleteAbortedSlotsFromReservation");
List<ReservationSlot> newSlotList = new List<ReservationSlot>();
foreach (ReservationSlot slot in reservation.getSlotList()) {
if (slot.isAborted() == false) {
newSlotList.Add(slot);
}
else
Console.WriteLine("Slot " + slot.GetNumber() + " is aborted! Remove it");
}
Reservation reservationWithoutAbortedSlots = new Reservation(reservation.getDescription(), reservation.getUserList(), newSlotList, reservation.getCreator(), reservation.getTicket());
return reservationWithoutAbortedSlots;
}
/// <summary>
/// Debug Method
/// Prints reservation information
/// </summary>
/// <param name="reservation"></param>
private void PrintReservation(Reservation reservation)
{
Console.WriteLine("[Calling] PrintReservation");
Console.WriteLine("RESERVATION");
if (reservation.getCreator() == null) {
Console.WriteLine("[Error]: Creator is Null");
return;
}
if (reservation.getDescription() == null) {
Console.WriteLine("[Error]: Description is null");
return;
}
Console.WriteLine("Description: " + reservation.getDescription());
if (reservation.getUserList().Count == 0) {
Console.WriteLine("[Error]: User list is empty");
return;
}
Console.WriteLine("User List");
foreach (UserView u in reservation.getUserList()) {
Console.WriteLine(u.getName());
}
if (reservation.getSlotList().Count == 0) {
Console.WriteLine("[Error]: Slot list is empty");
return;
}
foreach (ReservationSlot s in reservation.getSlotList()) {
Console.WriteLine(s.ToString());
}
}
private List<UserView> ChooseUsers(Reservation reservation, int messageCounter)
{
Console.WriteLine("[Calling] ChooseUsers");
int userListSize = reservation.getUserList().Count;
float numberOfUsersToSelect = (float)System.Math.Round((float)userListSize /(2*(messageCounter)));
if (userListSize == 1 || userListSize == 0) numberOfUsersToSelect = 1;
Console.WriteLine("Number of User's to Select: " + numberOfUsersToSelect);
List<UserView> selectedUsers = new List<UserView>();
Dictionary<UserView, int> potencialUsers = new Dictionary<UserView, int>(); //contains the list of candidate users
lock (User.KnownUsers)
{
foreach (KeyValuePair<UserView, int> u in User.KnownUsers)
{
Console.WriteLine("Current User: "******" Trust: " + u.Value);
//if the user is in the reservation list and I know it, then he is a potential candidates
foreach (UserView r in reservation.getUserList())
{
if (r.getName().Equals(u.Key.getName()) && !r.getName().Equals(User.Name))
{
potencialUsers.Add(u.Key, u.Value);
}
}
}
}
for (int i = 1; i <= numberOfUsersToSelect; i++) {
int totalSum = CalculateTrustSum(potencialUsers);
Dictionary<UserView, float> updatedPotentialUsers = new Dictionary<UserView, float>();
foreach (KeyValuePair<UserView, int> u in potencialUsers) {
float trustRatio = CalculateTrustRatio(totalSum, u);
KeyValuePair<UserView, float> updatedUserwithTrustRatio = new KeyValuePair<UserView, float>(u.Key, trustRatio);
updatedPotentialUsers.Add(updatedUserwithTrustRatio.Key, updatedUserwithTrustRatio.Value);
//debug
Console.WriteLine("User " + updatedUserwithTrustRatio.Key.getName() + " Trust Ratio " + updatedPotentialUsers[updatedUserwithTrustRatio.Key]);
}
Dictionary<UserView, Tuple<float, float>> cumulativeDistributionFunction = new Dictionary<UserView, Tuple<float, float>>();
//debug!
Console.WriteLine("Printing potential users..");
foreach (KeyValuePair<UserView, float> p in updatedPotentialUsers) {
Console.WriteLine("User: "******" Trust Ratio: " + p.Value);
}
cumulativeDistributionFunction = BuildCumulativeDistributionFunction(updatedPotentialUsers);
PrintUsersInterval(cumulativeDistributionFunction);
//generate a random number and sees which user cumulative function interval that number is in
//that user will be the chosen one!
System.Random randomNumberGenerator = new System.Random();
float randomNumber = (float)randomNumberGenerator.NextDouble();
Console.WriteLine("Random Number: " + randomNumber);
foreach (KeyValuePair<UserView, Tuple<float, float>> u in cumulativeDistributionFunction) {
if (Between(randomNumber, u.Value.Item1, u.Value.Item2)) {
selectedUsers.Add(u.Key);
potencialUsers.Remove(u.Key);
break;
}
}
}//closes first for
return selectedUsers;
}
