function initialize() { macaddress.one('wlan0', function (err, mac) { mac_address = mac; if (mac === null) { console.log('exiting due to null mac Address'); process.exit(1); } firebase.initializeApp({ serviceAccount: '/node_app_slot/<service-account-key>.json', databaseURL: 'https://<project-id>.firebaseio.com/' }); var db = firebase.database(); ref_samples = db.ref('/samples'); locationSample(); });}
function locationSample() { var t = new Date(); iwlist.scan('wlan0', function(err, networks) { if(err === null) { ref_samples.push({ mac: mac_address, t_usec: t.getTime(), t_locale_string: t.toLocaleString(), networks: networks, }); } else { console.log(err); } }); setTimeout(locationSample, 10000);}
private void GeolocateWifiSample(DataSnapshot sample, Firebase db_geolocations, Firebase db_errors) { // initalize the context and request GeoApiContext context = new GeoApiContext(new GaeRequestHandler()).setApiKey(""); GeolocationApiRequest request = GeolocationApi.newRequest(context) .ConsiderIp(false); // for every network that was reported in this sample... for (DataSnapshot wap : sample.child("networks").getChildren()) { // extract the network data from the database so it’s easier to work with String wapMac = wap.child("address").getValue(String.class); int wapSignalToNoise = wap.child("quality").getValue(int.class); int wapStrength = wap.child("signal").getValue(int.class); // include this network in our request request.AddWifiAccessPoint(new WifiAccessPoint.WifiAccessPointBuilder() .MacAddress(wapMac) .SignalStrength(wapStrength) .SignalToNoiseRatio(wapSignalToNoise) .createWifiAccessPoint()); } ... try { // call the api GeolocationResult result = request.CreatePayload().await(); ... // write results to the database and remove the original sample } catch (final NotFoundException e) { ... } catch (final Throwable e) { ... }}
ChildEventListener samplesListener = new ChildEventListener() { @Override public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) { // geolocate and write to new location GeolocateWifiSample(dataSnapshot, db_geolocations, db_errors); } ...};db_samples.addChildEventListener(samplesListener);
function initMap() { // attach listeners firebase.database().ref('/visualization').on('child_added', function(data) { ... data.ref.on('child_added', function(vizData) { circles[vizData.key]= new CircleRoyale(map, vizData.val().lat, vizData.val().lng, vizData.val().accuracy, color); set_latest_position(data.key, vizData.val().lat, vizData.val().lng); }); data.ref.on('child_removed', function(data) { circles[data.key].removeFromMap(); }); }); // create the map map = new google.maps.Map(document.getElementById('map'), { center: get_next_device(), zoom: 20, scaleControl: true, }); ...}
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