public AddUpdateRequest(string senderID, int senderPort, int seq, NHLFEntry entry)
{
messageType = "NHLF.AddUpdateRequest";
this.senderID = senderID;
this.senderPort = senderPort;
this.seq = seq;
this.entry = entry;
}
// Keyboard input handling -each keypress can be interpreted as
// a control command.
void KeyboardControl()
{
while (true)
{
switch (Console.ReadKey(true).Key)
{
case ConsoleKey.T:
transportFunction.PrintRouteTable();
break;
case ConsoleKey.A:
LRM.PrintAssignments();
break;
case ConsoleKey.P:
if (Log.IsPaused)
{
Log.Unpause();
}
else
{
Log.Pause();
}
break;
#if DEBUG
case ConsoleKey.Enter:
MPLSPacket testPacket = new MPLSPacket(new int[] { 2137 }, "This is a test MPLSMessage.");
transportFunction.EnqueuePacketOnFirstQueue(testPacket);
break;
case ConsoleKey.U:
NHLFEntry entry = new NHLFEntry(10, 1, 17, true, 2, new int[] { 35 });
AddUpdateRequest testUpdateReq = new AddUpdateRequest("Helo it me", mgmtLocalPort, 2137, entry);
SendManagementMsg(mgmtLocalPort, testUpdateReq);
break;
case ConsoleKey.R:
RemoveRequest testRemoveReq = new RemoveRequest("Helo it me", mgmtLocalPort, 2137, 10);
SendManagementMsg(mgmtLocalPort, testRemoveReq);
break;
case ConsoleKey.L:
AllocateRequest testAllocReq = new AllocateRequest(id, mgmtLocalPort, allocCounter++, 1, 30, 1);
SendManagementMsg(mgmtLocalPort, testAllocReq);
break;
case ConsoleKey.D:
DeallocateRequest testDeallocReq = new DeallocateRequest(id, mgmtLocalPort, allocCounter--, 1);
SendManagementMsg(mgmtLocalPort, testDeallocReq);
break;
#endif
default:
break;
}
}
}
/*
* ParseRoutingTable(string)
*
* This method parses routing information from a specially formatted
* text file. The data format is as follows:
*
* interface_in label_in add/swap(bool) interface_out label(s)_out
*
* Row elements are tab-separated (\t) and labels (if adding more) are comma-separated.
*
* @returns RouteEntry[] - "list of rows" in the routing table
*/
public void ParseRoutingTable(string pathToFile)
{
List <NHLFEntry> newEntryList = new List <NHLFEntry>();
// If the filepath is empty, return an empty object (the table is clear)
if (pathToFile == "")
{
return;
}
try
{
string[] tableRows = File.ReadAllLines(pathToFile, Encoding.UTF8);
// Iterate over each line in routing config file
foreach (string row in tableRows)
{
if (row[0] == '#') // Check if a row is a comment - if true, skip it
{
continue;
}
string[] attributes = row.Split('\t');
NHLFEntry newEntry = new NHLFEntry(
int.Parse(attributes[0]),
byte.Parse(attributes[1]),
int.Parse(attributes[2]),
bool.Parse(attributes[3]),
byte.Parse(attributes[4]),
Array.ConvertAll(attributes[5].Split(','), int.Parse) // Convert labels as CSVs into int[]
);
newEntryList.Add(newEntry);
}
routingTable.Concat(newEntryList); // Concat - instead of assignment, not to erase existing entries
}
catch (FileNotFoundException)
{
throw new FileNotFoundException();
}
}
// Adds, swaps or removes (depending on situation) an entry in the
// routing table. Returns a textual representation of the operation
// undertaken - "Added", "Swapped" or "Removed".
public string UpdateRoutingTable(NHLFEntry newEntry, bool addOrSwap)
{
NHLFEntry existingEntry = null;
bool entrySwapped = true;
string actionTaken;
try
{
var queryResults = from entry in routingTable
where entry.interface_in == newEntry.interface_in && entry.label_in == newEntry.label_in
select entry;
existingEntry = queryResults.Single();
routingTable.Remove(existingEntry);
}
catch (InvalidOperationException)
{
entrySwapped = false;
}
if (addOrSwap)
{
routingTable.Add(newEntry);
if (entrySwapped)
{
actionTaken = "Swapped";
}
else
{
actionTaken = "Added";
}
}
else
{
actionTaken = "Removed";
}
return(actionTaken);
}
