/// <summary> /// Publishes a new time-bound observation value of type 'Statistics' to the server. /// </summary> /// <param name="observationId">Observation identifier.</param> /// <param name="timestamp">Date and time in UTC.</param> /// <param name="value">Observation value.</param> /// <returns>True if successful, False otherwise.</returns> public bool PublishObservation(int observationId, DateTime timestamp, DescriptiveStatistics value) { StatisticsObservation o = new StatisticsObservation() { Timestamp = timestamp, Value = value }; string json = JsonConvert.SerializeObject(o); return(PublishObservationMessage(observationId, Encoding.UTF8.GetBytes(json))); }
private ObservationPackage GetBufferedObservations(out int maxId) { maxId = -1; ObservationPackageBuilder builder = new ObservationPackageBuilder(); using (LiteDatabase db = new LiteDatabase(_liteDBPathName)) { var col = db.GetCollection <BufferedObservation>(_OBSBUF_NAME); var records = col.Find(c => c.Uploaded == false).OrderBy(c => c.Id); IEnumerable <BufferedObservation> observations = null; if (UploadRowLimit > 0) { observations = records.Take(UploadRowLimit); } else { observations = records; } foreach (BufferedObservation bo in observations) { maxId = bo.Id; if (bo.Value != null) { Observation observation = null; switch ((DataType)(bo.DataType)) { case DataType.Boolean: observation = new BooleanObservation() { Timestamp = bo.Timestamp, Value = DataTypeStringConverter.ParseBooleanValue(bo.Value) }; break; case DataType.Double: observation = new DoubleObservation() { Timestamp = bo.Timestamp, Value = DataTypeStringConverter.ParseDoubleValue(bo.Value) }; break; case DataType.Integer: observation = new IntegerObservation() { Timestamp = bo.Timestamp, Value = DataTypeStringConverter.ParseIntegerValue(bo.Value) }; break; case DataType.Position: observation = new PositionObservation() { Timestamp = bo.Timestamp, Value = DataTypeStringConverter.ParsePositionValue(bo.Value) }; break; case DataType.String: observation = new StringObservation() { Timestamp = bo.Timestamp, Value = bo.Value }; break; case DataType.Statistics: observation = new StatisticsObservation() { Timestamp = bo.Timestamp, Value = DataTypeStringConverter.ParseStatisticsValue(bo.Value) }; break; default: throw new NotSupportedException("Unknown data type: " + bo.DataType.ToString()); } IdentifiedObservation io = new IdentifiedObservation() { ObservationId = bo.ObservationId, Observation = observation }; builder.Append(io); } } } return(builder.GetAsObservationPackage()); }