public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var measurement = JObject.Load(reader);
var measurementType = measurement["measurement_type"].Value <String>();
var convertedMeasurement = measurement.ToObject <Measurement>();
object measurementVal = null;
switch (measurementType)
{
case "weight":
{
measurementVal = new WeightValueInfo();
serializer.Populate(measurement["value_info"].CreateReader(), measurementVal);
convertedMeasurement.value_info = (WeightValueInfo)measurementVal;
break;
}
case "pulse":
{
measurementVal = new PulseValueInfo();
serializer.Populate(measurement["value_info"].CreateReader(), measurementVal);
convertedMeasurement.value_info = (PulseValueInfo)measurementVal;
break;
}
case "blood_pressure":
{
measurementVal = new BloodPressureValueInfo();
serializer.Populate(measurement["value_info"].CreateReader(), measurementVal);
convertedMeasurement.value_info = (BloodPressureValueInfo)measurementVal;
break;
}
case "steps":
{
measurementVal = new StepsValueInfo();
serializer.Populate(measurement["value_info"].CreateReader(), measurementVal);
convertedMeasurement.value_info = (StepsValueInfo)measurementVal;
break;
}
default:
{
measurementVal = new DefaultValueInfo();
serializer.Populate(measurement["value_info"].CreateReader(), measurementVal);
convertedMeasurement.value_info = (DefaultValueInfo)measurementVal;
break;
}
}
return(convertedMeasurement);
}
public void Handle(string json)
{
Console.WriteLine("Measurement handler invoked " + DateTime.UtcNow);
var obj = JsonConvert.DeserializeObject <Measurement>(json, settings);
string END_USER_URI = obj.user;
int userId = storeAPI.GetIdFromURI(obj.user);
Tuple <string, string> userLocales = storeAPI.GetUserLocale(END_USER_URI, userId);
var LANG = userLocales.Item1;
var tZone = userLocales.Item2;
//var LANG = storeAPI.GetLang(obj.user);
if (obj.measurement_type == "weight")
{
var weightValInfo = (WeightValueInfo)obj.value_info;
var val = weightValInfo.Value;
var kg = storeAPI.GetLatestWeightMeasurement(userId);
var trend = "normal";
obj.ok = true;
if (kg != 0)
{
if (Math.Abs(val - kg) > 2)
{
trend = val > kg ? "up" : "down";
obj.ok = false;
}
}
storeAPI.PushMeasurement(JsonConvert.SerializeObject(obj));
if (trend == "down" || trend == "up")
{
var category = trend == "up" ? Loc.WEIGHT_INC : Loc.WEIGHT_DEC;
var endUserMsg = string.Format(Loc.Get(LANG, Loc.MSG, category, Loc.USR), Math.Floor(Math.Abs(val - kg)));
var caregiverMsg = string.Format(Loc.Get(LANG, Loc.MSG, category, Loc.CAREGVR), Math.Floor(Math.Abs(val - kg)));
InformUser(END_USER_URI, "weight", "medium", endUserMsg, Loc.Get(LANG, Loc.DES, category, Loc.USR));
InformCaregivers(END_USER_URI, "weight", "medium", caregiverMsg, Loc.Get(LANG, Loc.DES, category, Loc.CAREGVR));
}
}
else if (obj.measurement_type == "pulse")
{
var pulseValInfo = (PulseValueInfo)obj.value_info;
var val = pulseValInfo.Value;
var min = 50;
var midLow = 60;
var midHigh = 100;
var max = 120;
if (val < min || val > max)
{
obj.ok = false;
}
else
{
obj.ok = true;
}
storeAPI.PushMeasurement(JsonConvert.SerializeObject(obj));
TimeZoneInfo localTz = TimeZoneInfo.FindSystemTimeZoneById(tZone);
DateTime pulseDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0).AddSeconds(obj.timestamp);
DateTime localizedPulseDateTime = UnixTimeStampToDateTime(obj.timestamp, localTz);
if (pulseDateTime.AddHours(1) > DateTime.UtcNow && localizedPulseDateTime.Hour >= 6)
{
AnalyzePulseValue(val, min, midLow, midHigh, max, END_USER_URI);
}
/*
* if (val < min || val > max)
* {
* obj.ok = false;
*
*
* // For the AAL Forum we will analyse each pulse measurement individually because we do not expect them to arrive very often
* // In any case, we will need a mechanism to switch between an individual and an aggregated analysis, based on context
* // (e.g. how frequently do the measurements arrive and what is their source)
*
* if(storeAPI.AreLastNHeartRateCritical(3, min, max))
* {
* var anEvent = new RMQ.INS.Event() { category = "HEART_RATE", content = new RMQ.INS.Content() { num_value = val } };
* insertionAPI.InsertEvent( JsonConvert.SerializeObject(anEvent));
* }
*
* //storeAPI.PushJournalEntry("Pulse is abnormal", "Pulse is abnormal", "pulse");
* }
* else
* {
* obj.ok = true;
* }
*/
}
else if (obj.measurement_type == "blood_pressure")
{
// TODO: for now we are treating the pulse values from blood_pressure measurements (if they contain one) in the same
// way in which we would handle pulse measurements from the FitBit. This is mostly for demo purposes and will change in the future.
// First, just save the blood_pressure measurement in the CAMI Store, marking it as ok, because we perform no analysis on BP values
obj.ok = true;
storeAPI.PushMeasurement(JsonConvert.SerializeObject(obj));
// Then perform analysis on Pulse value, if there is any
var bpValInfo = (BloodPressureValueInfo)obj.value_info;
var val = bpValInfo.pulse;
// if it has pulse information
if (val != 0)
{
var min = 50;
var midLow = 60;
var midHigh = 100;
var max = 120;
// create a new measurement object of type Pulse, copying over meta data from the BP obj
var pulseObj = new Measurement();
pulseObj.measurement_type = "pulse";
pulseObj.unit_type = "bpm";
pulseObj.timestamp = obj.timestamp;
pulseObj.user = obj.user;
pulseObj.device = obj.device;
pulseObj.gateway_id = obj.gateway_id;
var pulseValInfo = new PulseValueInfo();
pulseValInfo.Value = val;
pulseObj.value_info = pulseValInfo;
if (val < min || val > max)
{
pulseObj.ok = false;
}
else
{
pulseObj.ok = true;
}
// first store the measurement in the CAMI Store
storeAPI.PushMeasurement(JsonConvert.SerializeObject(pulseObj));
// TODO: currently we know that notification are handled client side only for the CamiDemo user (id = 2), so if we are not
// handling data for that user, do not send alerts
AnalyzePulseValue(val, min, midLow, midHigh, max, END_USER_URI);
}
}
else if (obj.measurement_type == "steps")
{
Console.WriteLine("Steps invoked!");
obj.ok = true;
storeAPI.PushMeasurement(JsonConvert.SerializeObject(obj));
// start the step count timer for this user if not already done so
StartStepsTimer(obj.user);
}
else
{
// for measurements for which there is no analysis, just mark the measurement as ok and insert it in the CAMI Store
obj.ok = true;
storeAPI.PushMeasurement(JsonConvert.SerializeObject(obj));
}
}