public void TestReadStationValues()
{
var api = new EnvAgencyRainfall();
var stations = api.GetStations(51.0899, -0.4547, 20);
Assert.NotNull(stations);
foreach (var s in stations.items)
{
if (s.measures == null || s.measures.Count == 0)
{
continue;
}
var rainfallMeasure = s.measures.Find(x => x.parameter.Equals("rainfall"));
if (rainfallMeasure == null)
{
continue;
}
var measurement = api.GetLatestMeasurement(s.stationReference);
if (measurement.items != null && measurement.items.Count > 0)
{
foreach (var i in measurement.items)
{
if (!i.parameter.Equals("rainfall"))
{
continue;
}
Console.WriteLine($"{s.stationReference} : {s.lat},{s.lon} : {i.latestReading.value}{i.unitName}");
}
}
}
}
static void update(EnvAgencyRainfall api, EnvAgencyRainfall.GetStationsData stations, InfluxDBClient influxDBClient)
{
// Write Data to influx
using (var writeApi = influxDBClient.GetWriteApi())
{
foreach (var s in stations.items)
{
if (s.measures == null || s.measures.Count == 0)
{
continue;
}
var rainfallMeasure = s.measures.Find(x => x.parameter.Equals("rainfall"));
if (rainfallMeasure == null)
{
continue;
}
var measurement = api.GetLatestMeasurement(s.stationReference);
if (measurement == null)
{
// TODO: One instance of this is a rainfall sensor returning value: [0, 0.4], as array instead of single value
// There doesn't appear to be anything in the api to signify this, will need to read the docs to tell if it's
// an actual error. No big deal really just that sensor won't be read
continue;
}
if (measurement.items != null && measurement.items.Count > 0)
{
foreach (var i in measurement.items)
{
if (!i.parameter.Equals("rainfall"))
{
continue;
}
var absReading = i.latestReading.value;
var mmPerPeriod = absReading;
if (!i.unit.Equals("http://qudt.org/1.1/vocab/unit#Millimeter"))
{
// Again TODO - Ignore for now as most sensors seem to be mm based.
// Should just scale up and we'd be good
continue;
}
var mmPerHour = mmPerPeriod * (3600.0 / i.period);
Console.WriteLine($"{s.stationReference} : {s.lat},{s.lon} : {mmPerHour}mm/h");
/// ///////////////////////////////////////////
// TODO: Take actual timestamp from rainfall reading. This is currently just polling, so less accurate/etc
var point = PointData.Measurement("rainfall")
.Tag("location", s.stationReference)
.Field("value", mmPerHour)
.Timestamp(DateTime.UtcNow, WritePrecision.S);
writeApi.WritePoint(BucketName, OrgName, point);
}
}
}
}
}