private void Device_OnPacketArrival(object sender, CaptureEventArgs e)
{
var time = e.Packet.Timeval.Date;
var len = e.Packet.Data.Length;
OpcPacket packet = new OpcPacket().Parse(e.Packet);
if (packet != null)
{
Log.Information("OPC Packet Transfer. ID: {0} Type: {1} Direction: {2}", packet.SecuritySequenceNumber, packet.OpcMessage.ToString(), packet.Direction);
if (ResponseToRequest(packet))
{
var diff = packet.Time - lastPacket.Time;
if (diff > 100000)
{
return;
}
OpcConversation conv = new OpcConversation(lastPacket, packet);
Prom.UpdateMetrics(conv);
}
lastPacket = packet;
}
}
public void UpdateMetrics(OpcConversation conv)
{
string measurement = conv.GetMessageType().ToString();
ulong timedifference = conv.CalculateTimeDifference();
long timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
switch (conv.GetMessageType())
{
case OpcMessageType.ReadResponse:
ReadRequest.Set(timedifference);
break;
case OpcMessageType.BrowseResponse:
BrowseRequest.Set(timedifference);
break;
case OpcMessageType.CallResponse:
CallRequest.Set(timedifference);
break;
}
ReadRequest.Set(timedifference);
}
