public static void computeUtility(string[] commandPieces, resultObject Result)
{
//usage computeutility AS d iteration
if (commandPieces.Length < 4)
{
Console.WriteLine("computeutility [ASN] [dest] [iteration]");
return;
}
UInt32 ASN, dest;
Int32 iter;
if (!UInt32.TryParse(commandPieces[1], out ASN) || !UInt32.TryParse(commandPieces[2], out dest) || !Int32.TryParse(commandPieces[3], out iter))
{
Console.WriteLine("bad params");
return;
}
if (iter > Result.state.Count)
{
Console.WriteLine("iteration too large.");
return;
}
bool[] iterState = Result.state[iter];
foreach (var stub in Result.g.getStubs())
iterState[stub] = true;//turn on the stubs as in the sim
SimulatorLibrary.setUtilityComputation(UtilityComputationType.outgoing);
GlobalState initial = SimulatorLibrary.initGlobalState(Result.g, Result.earlyAdopters, Result.weightedNodes, short.Parse(Result.k));
Destination d = new Destination(SimulatorLibrary.initMiniDestination(Result.g, dest, false));
d.UpdatePaths(iterState);
d.ComputeU(initial.W);
Console.WriteLine("Utility for " + ASN + " in iteration: " + iter + " is " + d.U[ASN]);
Worker w = new Worker();
int afterFlip= w.ComputeUtility(d.BucketTable, d.Best, d.ChosenParent, d.SecP, iterState, ASN, d.L[ASN], d.BestRelation[ASN], initial.W);
Console.WriteLine("Utility for " + ASN + " in iteration: " + iter + " if they flip is " +afterFlip);
}
private bool flipU(ref List<Destination> ds, ref NetworkGraph g, ref GlobalState globalState,string command)
{
Console.WriteLine("Flipping state:");
string[] cpieces = command.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
if (cpieces.Length < 2)
{
Console.WriteLine("usage: flipu <d> <quiet?>");
return false;
}
Destination d = new Destination();
UInt32 destNum;
if (!UInt32.TryParse(cpieces[1], out destNum))
{
Console.WriteLine("invalid destination number");
return false;
}
foreach (Destination curr in ds)
{
if (curr.destination == destNum)
d = curr;
}
if (d.BucketTable == null)
{
Console.WriteLine("null bucket table!");
return false;
}
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
List<UInt32> toflip = new List<UInt32>();
bool quiet = false;
if (command.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Length > 2)
{
quiet = true;
Console.WriteLine("you have selected quiet mode");
}
List<UInt32> nonstubs = g.getNonStubs();
foreach (UInt32 ASN in nonstubs)
{
if (d.Best[ASN] != null)//make sure this AS has a route to our destination
{
Worker w = new Worker();
int notASN = w.ComputeUtility(d.BucketTable, d.Best, d.ChosenParent, d.SecP, globalState.S, ASN, d.L[ASN], d.BestRelation[ASN], globalState.W);
if (d.U[ASN] < notASN)
{
if (!quiet)
Console.WriteLine("AS: " + ASN + " from " + globalState.S[ASN] + " to " + !globalState.S[ASN]);
toflip.Add(ASN);//don't flip on the fly it messes up everyones calculations, do it at the end.
}
}
}
foreach (int ASN in toflip)
{
if (globalState.S[ASN])
Console.WriteLine("AS: " + ASN + " is rolling back!!!");
globalState.S[ASN] = !globalState.S[ASN];
}
stopwatch.Stop();
Console.WriteLine("flip u took " + stopwatch.ElapsedMilliseconds + " ms");
Console.WriteLine("it flipped " + toflip.Count + " ASes");
return true;
}
private bool computeNotN(ref List<Destination> ds, ref GlobalState globalState, ref Worker w, string command)
{
string[] cpieces = command.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
if (cpieces.Length < 3)
{
Console.WriteLine("error: usage getpath <as#> <dstnum>");
return false;
}
int dstNum;
UInt32 ASN;
if (!UInt32.TryParse(cpieces[1], out ASN) || !int.TryParse(cpieces[2],out dstNum))
{
Console.WriteLine("invalid ASN or destination.");
return false;
}
foreach (Destination d in ds)
{
if (d.destination == dstNum)
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Reset();
stopwatch.Start();
int unotn = w.ComputeUtility(d.BucketTable, d.Best, d.ChosenParent, d.SecP, globalState.S, ASN, d.L[ASN], d.BestRelation[ASN], globalState.W);
stopwatch.Stop();
Console.WriteLine("Utility for " + ASN + " if they flip is: " + unotn + " computing this took " + stopwatch.ElapsedMilliseconds);
return true;
}
}
Console.WriteLine("could not find destination.");
return false;
}
private bool flipallU(ref List<Destination> ds, ref NetworkGraph g, ref GlobalState globalState, string command)
{
Console.WriteLine("Flipping state:");
string[] cpieces = command.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
if (cpieces.Length < 1)
{
Console.WriteLine("usage: flipallu <quiet?>");
return false;
}
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
List<UInt32> toflip = new List<UInt32>();
bool quiet = false;
if (command.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Length > 1)
{
quiet = true;
Console.WriteLine("you have selected quiet mode");
}
List<UInt32> nonstubs = g.getNonStubs();
Int64[] deltaU = new Int64[Constants._numASNs];
for (int i = 0; i < deltaU.Length; i++)
deltaU[i] = 0;
foreach (Destination d in ds)
{
foreach (UInt32 ASN in nonstubs)
{
if (d.Best[ASN] != null)//make sure this AS has a route to our destination
{
Worker w = new Worker();
int notASN = w.ComputeUtility(d.BucketTable, d.Best, d.ChosenParent, d.SecP, globalState.S, ASN, d.L[ASN], d.BestRelation[ASN], globalState.W);
deltaU[ASN] += (notASN - d.U[ASN]);
}
}
}
int flipped = 0;
for (int ASN = 0; ASN < deltaU.Length;ASN++ )
{
if (deltaU[ASN] > 0)//positive change in utility for this ASN
{
flipped++;
if (globalState.S[ASN])
Console.WriteLine("AS: " + ASN + " is rolling back!!!");
globalState.S[ASN] = !globalState.S[ASN];
if (!quiet)
{
Console.WriteLine("AS: " + ASN + " had change in utility of " + deltaU[ASN]);
}
}
}
stopwatch.Stop();
Console.WriteLine("flip u took " + stopwatch.ElapsedMilliseconds + " ms");
Console.WriteLine("it flipped " + flipped + " ASes");
return true;
}
private void runCompareU(List<UInt32> nonstubs,Destination d,ref Worker w,bool onlybenefit,ref GlobalState globalState)
{
if (d.BucketTable == null)
{
Console.WriteLine("null bucket table!");
return;
}
Stopwatch stopwatch = new Stopwatch();
stopwatch.Reset();
stopwatch.Start();
d.UpdatePaths(globalState.S);
d.ComputeU(globalState.W);//just in case.
stopwatch.Stop();
foreach (UInt32 ASN in nonstubs)
{
if (d.Best[ASN] != null)//nonstub has a path to d
{
int notASN = w.ComputeUtility(d.BucketTable, d.Best, d.ChosenParent, d.SecP, globalState.S, ASN, d.L[ASN], d.BestRelation[ASN], globalState.W);
if (!onlybenefit || d.U[ASN] < notASN)
Console.WriteLine(ASN + " :: " + d.U[ASN] + " : " + notASN);
}
}
Console.WriteLine("update paths and compute u took: " + stopwatch.ElapsedMilliseconds + " ms");
}