/// <summary>
/// A sniffer entry (sniffer-mac, client-mac, rssi, and time) is added to currently built measurements.
/// The procedures is the same for online and offline measurements - the only difference is that we do not track changes to
/// online measurements as we are not interested in saving them persistently (at least not at the present time)
/// </summary>
/// <param name="snifferMac">The sniffer's mac address</param>
/// <param name="clientMac">The client's mac adress</param>
/// <param name="rssi">The client's rssi as measured by the sniffer</param>
/// <param name="mode">'Offline' or 'Online' to help distinguish whether we want to save the data persistently</param>
/// <param name="time">The time the sniffer entry was made. </param>
private static void addToMeasurement(string snifferMac, string clientMac, int rssi, DateTime time)
{
Mode mode;
//First, determine the mode.
if (currentOfflineMeasurements.ContainsKey(clientMac))
{
mode = Mode.Offline;
}
else if (currentOnlineMeasurements.ContainsKey(clientMac))
{
mode = Mode.Online;
}
else
{
return; //Unknown client mac
}
ConcurrentDictionary <string, SnifferWifiMeasurement> dic = getMeasurementDictionary(mode);
SnifferWifiMeasurement curWifiMeasurement = dic[clientMac];
//Update end meas time (even more may come..)
curWifiMeasurement.meas_time_end = time;
//Add or update histogram with snifferMac, rssi value
SnifferHistogram curHist = curWifiMeasurement.SnifferHistograms.FirstOrDefault(h => h.Mac == snifferMac && h.value == rssi);
if (curHist == null) //insert new histogram
{
curHist = new SnifferHistogram();
curHist.Mac = snifferMac;
curHist.value = rssi;
curHist.count = 0;
curWifiMeasurement.SnifferHistograms.Add(curHist);
curHist.SnifferWifiMeasurement = curWifiMeasurement;
if (mode == Mode.Offline)
{
context.AddRelatedObject(curWifiMeasurement, "SnifferHistograms", curHist);
}
}
curHist.count++; //yet another count for this rssi value
//In the offline mode we actually save the data.
if (mode == Mode.Offline)
{
context.UpdateObject(curWifiMeasurement);
context.UpdateObject(curHist);
}
}
//Upload a symbolicLocation in the background (update or create)
//Form: AsyncTask<[Input Parameter Type], [Progress Report Type], [Result Type]>
private void UploadSymbolicLocationTask(SymbolicLocation tmpSymLoc)
{
isUploading = true;
mContext = LocationService.radiomapContext;
Vertex currentVertex = Map2DOffline.SelectedOfflineVertex;
SymbolicLocation currentSymLoc = currentVertex.SymbolicLocations.FirstOrDefault();
//1) upload NEW symbolic location
if (currentSymLoc == null)
{
mContext.AddRelatedObject(currentVertex, "SymbolicLocations", tmpSymLoc);
currentVertex.SymbolicLocations.Add(tmpSymLoc);
}
//2) or UPDATE existing
else
{
//copy updated values
currentSymLoc.title = tmpSymLoc.title;
currentSymLoc.description = tmpSymLoc.description;
currentSymLoc.url = tmpSymLoc.url;
currentSymLoc.is_entrance = tmpSymLoc.is_entrance;
mContext.UpdateObject(currentSymLoc);
}
try
{
mContext.BeginSaveChanges(OnChangesSaved, mContext);
//uploadProgressBar.Visibility = System.Windows.Visibility.Visible;
uploadProgressIndicator.IsVisible = isUploading;
}
catch (Exception ex)
{
isUploading = false;
uploadProgressIndicator.IsVisible = isUploading;
MessageBox.Show(string.Format("The changes could not be saved.\n"
+ "The following error occurred: {0}", ex.Message));
}
}