/// <summary>
/// Builds the frame from JSON text
/// </summary>
/// <param name="textFrame">The text of JSON frame.</param>
/// <returns></returns>
public IFrame BuildFrame(String textFrame)
{
metadata = JObject.Parse(textFrame);
StmLevel frameLevel = StmLevel.STM1;
if (metadata["Level"] != null)
{
frameLevel = FrameBuilder.getStmLevel(metadata["Level"]);
}
Frame returnFrame = new Frame(frameLevel);
if (metadata["Msoh"].HasValues)
{
returnFrame.Msoh = (Header)FrameBuilder.EvaluateContent((JObject)metadata["Msoh"]);
}
if (metadata["Rsoh"].HasValues)
{
returnFrame.Rsoh = (Header)FrameBuilder.EvaluateContent((JObject)metadata["Rsoh"]);
}
if (FrameBuilder.isJArray(metadata["Content"]))
{
returnFrame.Content = FrameBuilder.evaluateContents((JArray)metadata["Content"]);
}
else
{
return(null);
}
return(returnFrame);
}
/// <summary>
/// Evaluates the content. Read JSON object create IContent
/// </summary>
/// <param name="content">The content.</param>
/// <returns></returns>
private static IContent EvaluateContent(JObject content)
{
try
{
if (FrameBuilder.isVirtualContainer(content["Type"])) //VirtualContainer
{
//Create new VC with level from JSON file
VirtualContainer newVC = new VirtualContainer(FrameBuilder.getVCLevel(content["Level"]));
newVC.Pointer = content["Pointer"].ToString();
newVC.POH = (POH)FrameBuilder.EvaluateContent((JObject)content["POH"]);
if (FrameBuilder.isJArray(content["Content"]))
{
newVC.Content = FrameBuilder.evaluateContents((JArray)content["Content"]);
}
else //There is no value Content of VC is null
{
newVC.Content = null;
}
return(newVC);
}
else if (FrameBuilder.isContainer(content["Type"]))
{
Container newContainer = new Container(content["Content"].ToString());
return(newContainer);
}
else if (FrameBuilder.isHeader(content["Type"]))
{
string checksum = content["Checksum"].ToString();
string eow = content["EOW"].ToString();
string dcc = content["DCC"].ToString();
Header newHeader = new Header(checksum, eow, dcc);
return(newHeader);
}
else if (FrameBuilder.isPOH(content["Type"]))
{
SignalLabelType signalType = FrameBuilder.getSignalType(content["SignalLabel"]);
POH poh = new POH(signalType);
return(poh);
}
else
{
return(null);
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return(null);
}
}
public AdaptationFunction(TransportTerminalFunction ttf)
{
Ttf = ttf;
Builder = new FrameBuilder();
Ttf.HandleInputFrame += new HandleInputFrame(GetDataFromFrame);
this.Streams = new List<StreamData>();
Dictionary<int, StmLevel> portsLevels = Ttf.GetPorts();
OutputCredentials = new Dictionary<int, IFrame>();
foreach (int portNumber in portsLevels.Keys)
{
OutputCredentials.Add(portNumber, new Frame(portsLevels[portNumber]));
}
}
/// <summary>
/// Evaluates the contents. Iterate through the JArray to create IContent
/// </summary>
/// <param name="content">The content.</param>
/// <returns></returns>
private static List <IContent> evaluateContents(JArray content)
{
List <IContent> returnList = new List <IContent>();
foreach (var item in content)
{
if (item.HasValues)
{
returnList.Add(FrameBuilder.EvaluateContent((JObject)item));
}
else //Index in Frame.Content is free or occupied by larger VC then VC12
{
returnList.Add(null);
}
}
return(returnList);
}
/// <summary>
/// Generates the BIP checksum
/// </summary>
/// <param name="sdhFrame">The SDH frame.</param>
/// <param name="block">The block.</param>
/// <returns></returns>
public static string GenerateBIP(IFrame sdhFrame, int blockCount)
{
FrameBuilder fmb = new FrameBuilder();
String checksum = String.Empty;
byte[] bitFrame = BinaryInterleavedParity.ObjectToByteArray(fmb.BuildLiteral(sdhFrame));
int hopSize = bitFrame.Length / blockCount;
for (int z = 0; z < blockCount; z++)
{
byte block = 0;
for (int x = z; x < z * hopSize && x < bitFrame.Length; x++)
{
block = (byte)(block + bitFrame[x]);
}
block = (byte)(block % 2);
checksum += block.ToString();
}
return checksum;
}
