Exemple #1
0
        /// <summary>
        /// Returns the component listener for the listener passed across.
        /// </summary>
        /// <param name="listener"></param>
        /// <returns></returns>
        private IMergedFeedComponentListener GetComponentListener(IListener listener)
        {
            IMergedFeedComponentListener result = null;

            if (listener != null)
            {
                lock (_SyncLock) {
                    if (_Listeners.Count >= 12)
                    {
                        _ComponentListenersMap.TryGetValue(listener.ReceiverId, out result);
                    }
                    else
                    {
                        for (var i = 0; i < _Listeners.Count; ++i)
                        {
                            var component = _Listeners[i];
                            if (component.Listener.ReceiverId == listener.ReceiverId)
                            {
                                result = component;
                                break;
                            }
                        }
                    }
                }
            }

            return(result);
        }
Exemple #2
0
 public void TestInitialise()
 {
     _Component = Factory.Singleton.Resolve <IMergedFeedComponentListener>();
     _Listener  = TestUtilities.CreateMockInstance <IListener>();
 }
Exemple #3
0
        /// <summary>
        /// Determines whether the message from a receiver can be used.
        /// </summary>
        /// <param name="receivedUtc"></param>
        /// <param name="listener"></param>
        /// <param name="icao"></param>
        /// <param name="hasPosition"></param>
        /// <param name="hasTrack"></param>
        /// <param name="hasGroundSpeed"></param>
        /// <param name="positionIsMlat"></param>
        /// <returns></returns>
        private FilterMessageOutcome FilterMessageFromListener(DateTime receivedUtc, IListener listener, string icao, bool hasPosition, bool hasTrack, bool hasGroundSpeed, bool positionIsMlat)
        {
            var result = FilterMessageOutcome.Failed;

            icao = icao ?? "";

            Source source = null;
            IMergedFeedComponentListener component = null;

            lock (_SyncLock) {
                component = GetComponentListener(listener);
                if (component != null)
                {
                    if (!_IcaoSourceMap.TryGetValue(icao, out source))
                    {
                        source = new Source()
                        {
                            LastMessageUtc      = receivedUtc,
                            Component           = component,
                            SeenPositionMessage = hasPosition,
                        };
                        _IcaoSourceMap.Add(icao, source);
                        result = FilterMessageOutcome.Passed;
                    }
                    else
                    {
                        if (source.Component == component)
                        {
                            result = FilterMessageOutcome.Passed;
                        }
                        else
                        {
                            var threshold = receivedUtc.AddMilliseconds(-IcaoTimeout);
                            if (source.LastMessageUtc < threshold)
                            {
                                source.Component = component;
                                result           = FilterMessageOutcome.Passed;
                            }
                        }

                        if (result == FilterMessageOutcome.Failed && (hasPosition || hasTrack || hasGroundSpeed) && (positionIsMlat || component.IsMlatFeed))
                        {
                            result = FilterMessageOutcome.OutOfBand;
                        }

                        switch (result)
                        {
                        case FilterMessageOutcome.OutOfBand:
                            if (hasPosition)
                            {
                                source.SeenPositionMessage = true;
                            }
                            break;

                        case FilterMessageOutcome.Passed:
                            source.LastMessageUtc = receivedUtc;
                            goto case FilterMessageOutcome.OutOfBand;
                        }
                    }
                }
            }

            if (result == FilterMessageOutcome.Passed && IgnoreAircraftWithNoPosition && source != null && !source.SeenPositionMessage)
            {
                result = FilterMessageOutcome.Failed;
            }

            return(result);
        }