#pragma warning disable RECS0154 // Parameter is never used
/// <summary>
/// Loads the item configuaration.
/// </summary>
public bool LoadConfiguration(ISystemContext context, ArchiveItem item)
#pragma warning restore RECS0154 // Parameter is never used
{
using (var reader = item.OpenArchive()) {
while (!reader.EndOfStream)
{
var line = reader.ReadLine();
// check for end or error.
if (line == null)
{
break;
}
// ignore blank lines.
line = line.Trim();
if (string.IsNullOrEmpty(line))
{
continue;
}
// ignore commented out lines.
if (line.StartsWith("//", StringComparison.CurrentCulture))
{
continue;
}
var dataType = BuiltInType.String;
var valueRank = ValueRanks.Scalar;
// get data type.
if (!ExtractField(1, ref line, out dataType))
{
return(false);
}
// get value rank.
if (!ExtractField(1, ref line, out valueRank))
{
return(false);
}
// get sampling interval.
if (!ExtractField(1, ref line, out int samplingInterval))
{
return(false);
}
// get simulation type.
if (!ExtractField(1, ref line, out int simulationType))
{
return(false);
}
// get simulation amplitude.
if (!ExtractField(1, ref line, out int amplitude))
{
return(false);
}
// get simulation period.
if (!ExtractField(1, ref line, out int period))
{
return(false);
}
// get flag indicating whether new data is generated.
if (!ExtractField(1, ref line, out int archiving))
{
return(false);
}
// get flag indicating whether stepped interpolation is used.
if (!ExtractField(1, ref line, out int stepped))
{
return(false);
}
// get flag indicating whether sloped interpolation should be used.
if (!ExtractField(1, ref line, out int useSlopedExtrapolation))
{
return(false);
}
// get flag indicating whether sloped interpolation should be used.
if (!ExtractField(1, ref line, out int treatUncertainAsBad))
{
return(false);
}
// get the maximum permitted of bad data in an interval.
if (!ExtractField(1, ref line, out int percentDataBad))
{
return(false);
}
// get the minimum amount of good data in an interval.
if (!ExtractField(1, ref line, out int percentDataGood))
{
return(false);
}
// update the item.
item.DataType = dataType;
item.ValueRank = valueRank;
item.SimulationType = simulationType;
item.Amplitude = amplitude;
item.Period = period;
item.SamplingInterval = samplingInterval;
item.Archiving = archiving != 0;
item.Stepped = stepped != 0;
item.AggregateConfiguration = new AggregateConfiguration {
UseServerCapabilitiesDefaults = false,
UseSlopedExtrapolation = useSlopedExtrapolation != 0,
TreatUncertainAsBad = treatUncertainAsBad != 0,
PercentDataBad = (byte)percentDataBad,
PercentDataGood = (byte)percentDataGood
};
break;
}
}
return(true);
}
/// <summary>
/// Creates new data.
/// </summary>
public void CreateData(ArchiveItem item)
{
// get the data set to use.
var dataset = item.DataSet;
if (dataset == null)
{
dataset = CreateDataSet();
}
// generate one hour worth of data by default.
var startTime = DateTime.UtcNow.AddHours(-1);
startTime = new DateTime(startTime.Year, startTime.Month, startTime.Day, startTime.Hour, 0, 0, DateTimeKind.Utc);
// check for existing data.
if (dataset.Tables[0].Rows.Count > 0)
{
var index = dataset.Tables[0].DefaultView.Count;
var endTime = (DateTime)dataset.Tables[0].DefaultView[index - 1].Row[0];
endTime = startTime.AddMilliseconds(item.SamplingInterval);
}
var currentTime = startTime;
var generator = new Opc.Ua.Test.DataGenerator(null);
while (currentTime < DateTime.UtcNow)
{
var dataValue = new DataValue {
SourceTimestamp = currentTime,
ServerTimestamp = currentTime.AddSeconds(generator.GetRandomByte()),
StatusCode = StatusCodes.Good
};
// generate random value.
if (item.ValueRank < 0)
{
dataValue.Value = generator.GetRandom(item.DataType);
}
else
{
dataValue.Value = generator.GetRandomArray(item.DataType, false, 10, false);
}
// add record to table.
var row = dataset.Tables[0].NewRow();
row[0] = dataValue.SourceTimestamp;
row[1] = dataValue.ServerTimestamp;
row[2] = dataValue;
row[3] = dataValue.WrappedValue.TypeInfo.BuiltInType;
row[4] = dataValue.WrappedValue.TypeInfo.ValueRank;
dataset.Tables[0].Rows.Add(row);
// increment timestamp.
currentTime = currentTime.AddMilliseconds(item.SamplingInterval);
}
dataset.AcceptChanges();
item.DataSet = dataset;
}
