/// <summary>
/// The _ReadMeasuringSensorsJson method receives data from json.
/// </summary>
/// <param name="path">Specifies the path to the json file.</param>
public void _ReadMeasuringSensorsJson(string path)
{
List <AbstractSensor> databaseLevelSensors = new SensorStorage().ReadMeasuringSensorsJson(path);
foreach (var sensor in databaseLevelSensors)
{
AddSensorInListSensors(businessLevelSensors, sensor);
}
}
private void PurgeOldRecords(SensorStorage sensorStorage)
{
var now = DateTime.Now;
if (now - sensorStorage.LastPurge > new TimeSpan(0, 15, 0))
{
var back24 = now - new TimeSpan(24, 0, 0);
int purged = sensorStorage.RemoveAll(record => record.TimeStamp < back24);
sensorStorage.LastPurge = now;
}
}
public bool Push(string sensor, IEnumerable <Reading> readings)
{
SensorStorage sensorStorage = GetSensorStorageByName(sensor);
if (null == sensorStorage)
{
return(false);
}
sensorStorage.AddRange(readings);
PurgeOldRecords(sensorStorage);
return(true);
}
public IEnumerable <Reading> GetReadings(string sensor, DateTime from, TimeSpan span)
{
SensorStorage sensorStorage = GetSensorStorageByName(sensor);
if (null == sensorStorage)
{
return(Enumerable.Empty <Reading>());
}
DateTime to = from.Add(span);
return(
(to < from)
? (
sensorStorage
.Where(ss => ss.TimeStamp >= to && ss.TimeStamp <= from)
.OrderByDescending(ss => ss.TimeStamp)
)
: (
sensorStorage
.Where(ss => ss.TimeStamp >= from && ss.TimeStamp <= to)
.OrderBy(ss => ss.TimeStamp)
)
);
}