/// <summary>
/// Translates the bytes for a compressed message into a cooked message object and raises the appropriate events.
/// </summary>
/// <param name="now"></param>
/// <param name="extractedBytes"></param>
private void ProcessCompressedMessageBytes(DateTime now, ExtractedBytes extractedBytes)
{
try {
var bytes = extractedBytes.Bytes;
if (extractedBytes.Offset != 0)
{
bytes = new byte[extractedBytes.Length];
Array.ConstrainedCopy(extractedBytes.Bytes, extractedBytes.Offset, bytes, 0, extractedBytes.Length);
}
var message = _Compressor.Decompress(bytes);
if (message != null)
{
++TotalMessages;
if (Statistics != null)
{
Statistics.Lock(r => ++ r.BaseStationMessagesReceived);
}
_MessageProcessingAndDispatchQueue.Enqueue(new MessageDispatch()
{
Port30003MessageEventArgs = new BaseStationMessageEventArgs(message)
});
}
} catch (Exception) {
++TotalBadMessages;
if (Statistics != null)
{
Statistics.Lock(r => ++ r.BaseStationBadFormatMessagesReceived);
}
if (!IgnoreBadMessages)
{
throw;
}
}
}
public void BaseStationMessageCompressor_Compress_And_Decompress_Work_As_Expected()
{
ExcelWorksheetData worksheet = new ExcelWorksheetData(TestContext);
var messageIn = new BaseStationMessage();
messageIn.MessageType = worksheet.ParseEnum <BaseStationMessageType>("MessageType");
messageIn.TransmissionType = worksheet.ParseEnum <BaseStationTransmissionType>("TransmissionType");
messageIn.StatusCode = worksheet.ParseEnum <BaseStationStatusCode>("StatusCode");
messageIn.Icao24 = worksheet.EString("Icao24");
messageIn.SessionId = worksheet.Int("SessionId");
messageIn.AircraftId = worksheet.Int("AircraftId");
messageIn.FlightId = worksheet.Int("FlightId");
messageIn.MessageGenerated = worksheet.DateTime("MessageGenerated");
messageIn.MessageLogged = worksheet.DateTime("MessageLogged");
messageIn.Callsign = worksheet.String("Callsign");
messageIn.Altitude = worksheet.NInt("Altitude");
messageIn.GroundSpeed = worksheet.NInt("GroundSpeed");
messageIn.Track = worksheet.NFloat("Track");
messageIn.Latitude = worksheet.NDouble("Latitude");
messageIn.Longitude = worksheet.NDouble("Longitude");
messageIn.VerticalRate = worksheet.NInt("VerticalRate");
messageIn.Squawk = worksheet.NInt("Squawk");
messageIn.SquawkHasChanged = worksheet.NBool("SquawkHasChanged");
messageIn.Emergency = worksheet.NBool("Emergency");
messageIn.IdentActive = worksheet.NBool("IdentActive");
messageIn.OnGround = worksheet.NBool("OnGround");
int expectedLength = worksheet.Int("Length");
byte[] bytes = _Compressor.Compress(messageIn);
Assert.AreEqual(expectedLength, bytes.Length);
DateTime earliestDate = DateTime.Now;
BaseStationMessage messageOut = _Compressor.Decompress(bytes);
DateTime latestDate = DateTime.Now;
if (bytes.Length == 0)
{
Assert.IsNull(messageOut);
}
else
{
Assert.AreEqual(messageIn.MessageType, messageOut.MessageType);
Assert.AreEqual(messageIn.TransmissionType, messageOut.TransmissionType);
Assert.AreEqual(BaseStationStatusCode.None, messageOut.StatusCode);
Assert.AreEqual(messageIn.Icao24, messageOut.Icao24);
Assert.AreEqual(0, messageOut.SessionId);
Assert.AreEqual(0, messageOut.AircraftId);
Assert.AreEqual(0, messageOut.FlightId);
Assert.AreEqual((double)earliestDate.Ticks, (double)messageOut.MessageGenerated.Ticks, (double)latestDate.Ticks - (double)earliestDate.Ticks);
Assert.AreEqual((double)earliestDate.Ticks, (double)messageOut.MessageLogged.Ticks, (double)latestDate.Ticks - (double)earliestDate.Ticks);
Assert.AreEqual(messageIn.Callsign, messageOut.Callsign);
Assert.AreEqual(messageIn.Altitude, messageOut.Altitude);
Assert.AreEqual(messageIn.GroundSpeed, messageOut.GroundSpeed);
Assert.AreEqual(messageIn.Track, messageOut.Track);
if (messageIn.Latitude == null)
{
Assert.IsNull(messageOut.Latitude);
}
else
{
Assert.AreEqual(messageIn.Latitude.Value, messageOut.Latitude.Value, 0.000001);
}
if (messageIn.Longitude == null)
{
Assert.IsNull(messageOut.Longitude);
}
else
{
Assert.AreEqual(messageIn.Longitude.Value, messageOut.Longitude.Value, 0.000001);
}
Assert.AreEqual(messageIn.VerticalRate, messageOut.VerticalRate);
Assert.AreEqual(messageIn.Squawk, messageOut.Squawk);
Assert.AreEqual(messageIn.SquawkHasChanged, messageOut.SquawkHasChanged);
Assert.AreEqual(messageIn.Emergency, messageOut.Emergency);
Assert.AreEqual(messageIn.IdentActive, messageOut.IdentActive);
Assert.AreEqual(messageIn.OnGround, messageOut.OnGround);
}
}