static async Task ProcessMessage(BmpMessage msg)
{
if (msg.BmpHeader.MessageType == BmpMessageType.RouteMonitoring)
{
if (((RouteMonitoring)msg).BgpUpdate.EndOfRib)
{
var fileName = Path.GetRandomFileName();
var logFile = File.Create(fileName);
using (var sw = new StreamWriter(logFile))
{
foreach (var route in routes)
{
foreach (var nlri in route.BgpUpdate.Nlri)
{
var prefix = nlri.ToString();
var nextHop = route.BgpUpdate.Attributes.FirstOrDefault(x => x.AttributeType == PathAttributeType.NextHop);
var asPath = route.BgpUpdate.Attributes.FirstOrDefault(x => x.AttributeType == PathAttributeType.AsPath);
var asnList = string.Join(" ", ((PathAttributeASPath)asPath).ASPaths[0].ASNs.Distinct().ToList());
sw.WriteLine($"{{\"Prefix\" : \"{prefix}\", \"NextHop\": \"{((PathAttributeNextHop)nextHop).NextHop.ToString()}\", \"AS Path\": \"{asnList}\"}},");
}
}
}
Environment.Exit(0);
}
if ((((RouteMonitoring)msg).BgpUpdate.Nlri.Count > 0))
{
routes.Add((RouteMonitoring)msg);
}
}
}
protected override void Decode(IChannelHandlerContext context, IByteBuffer input, List <object> output)
{
try
{
var length = input.ReadableBytes;
if (length < 6)
{
return;
}
// check bytes
var data = new byte[length];
input.ReadBytes(data);
var bmpMessage = BmpMessage.Create(data);
if (bmpMessage != null)
{
output.Add(bmpMessage);
}
}
catch (DecoderException)
{
input.SkipBytes(input.ReadableBytes);
throw;
}
}
public static string ToJson(this BmpMessage msg)
{
string json;
switch (msg.BmpHeader.MessageType)
{
case BmpMessageType.PeerUp:
var peerUpNotificationModel = ConvertToModel(msg as PeerUpNotification);
json = JsonConvert.SerializeObject(peerUpNotificationModel);
break;
case BmpMessageType.RouteMonitoring:
var routeMonitoringModel = ConvertToModel(msg as RouteMonitoring);
json = JsonConvert.SerializeObject(routeMonitoringModel);
break;
default:
return(null);
}
return(json);
}
