/// <summary>
/// Generates random Events.
/// </summary>
/// <param name="EventsCount">The events count we want to generate.</param>
/// <param name="sessionStart">Used to set the EpochNanos property of the TelemetryData. TelemetryData.Parameters
/// share the same timestamps as they aligned to the same time.</param>
/// <returns></returns>
public static List <Event> GenerateEvents(int eventsCount, DateTime sessionStart)
{
var interval = (long)(100000); // interval in nanoseconds between events
var randomRangeWalker = new RandomRangeWalker(0, 1); // Used to generated random data
var events = new List <Event>();
var timestamp = sessionStart.ToTelemetryTime();
for (int i = 0; i < eventsCount; i++)
{
var nextValue = randomRangeWalker.GetNext();
var @event = new Event
{
Id = EventId,
Values = new[] { nextValue },
EpochNanos = sessionStart.ToTelemetryTime(),
TimeNanos = timestamp
};
events.Add(@event);
timestamp += interval;
}
return(events);
}
/// <summary>
/// Generates random TelemetryData.
/// </summary>
/// <param name="sampleCount">The sample count that is used to set the size of each TelemetryData.Parameter values' size.</param>
/// <param name="sessionStart">Used to set the EpochNanos property of the TelemetryData. TelemetryData.Parameters
/// share the same timestamps as they aligned to the same time.</param>
/// <returns></returns>
public static TelemetryData GenerateData(int sampleCount, DateTime sessionStart)
{
var data = new TelemetryData()
{
EpochNanos = sessionStart.ToTelemetryTime(),
TimestampsNanos = new long[sampleCount],
Parameters = new TelemetryParameterData[1] // The sample AtlasConfiguration has only 1 parameter
};
// The sample AtlasConfiguration has only 1 parameter, so data.Parameters[0] must be initialized only.
data.Parameters[0] = new TelemetryParameterData()
{
AvgValues = new double[sampleCount], // The data will be stored in the AvgValues array, so this must be initialized
Statuses = new DataStatus[sampleCount] // Status is stored for each data, so Statuses array must be initialized
};
var randomRangeWalker = new RandomRangeWalker(0, 1); // Used to generated random data
var timestamp = sessionStart.ToTelemetryTime();
for (int i = 0; i < sampleCount; i++)
{
var nextData = randomRangeWalker.GetNext();
data.TimestampsNanos[i] = timestamp; // timestamps expressed in ns since the epoch, which is the start of the session
data.Parameters[0].AvgValues[i] = nextData;
data.Parameters[0].Statuses[i] = DataStatus.Sample;
timestamp += Interval;
}
return(data);
}
/// <summary>
/// Generates random TelemetrySamples.
/// </summary>
/// <param name="sampleCount">The sample count that is used to set the size of each TelemetrySamples.Values' size.</param>
/// <param name="sessionStart">Used to set the EpochNanos property of the TelemetrySamples.</param>
/// <returns></returns>
public static TelemetrySamples GenerateSamples(int sampleCount, DateTime sessionStart)
{
var sample = new TelemetryParameterSamples()
{
EpochNanos = sessionStart.ToTelemetryTime(),
TimestampsNanos = new long[sampleCount],
Values = new double[sampleCount]
};
var randomRangeWalker = new RandomRangeWalker(0, 1); // Used to generated random data
for (int i = 0; i < sampleCount; i++)
{
var nextSample = randomRangeWalker.GetNext();
sample.TimestampsNanos[i] = i * Interval;
sample.Values[i] = nextSample;
}
var data = new TelemetrySamples()
{
Parameters = new Dictionary <string, TelemetryParameterSamples>()
{
{ ParameterId, sample } // If you had more samples to send for other parameters, this is where you would add them
}
};
return(data);
}
private void GenerateData(IOutputTopic topic, DataFormatClient dataFormatClient, string dataFormatId, string atlasConfigurationId)
{
const int steps = 12000;
const int delay = (int)(1000 / Frequency);
var random = new Random();
var start = DateTime.UtcNow;
var epoch = start.ToTelemetryTime();
var output = new SessionTelemetryDataOutput(topic, dataFormatId, dataFormatClient);
var outputFeed = output.DataOutput.BindDefaultFeed();
// declare a session
output.SessionOutput.AddSessionDependency(DependencyTypes.DataFormat, dataFormatId);
output.SessionOutput.AddSessionDependency(DependencyTypes.AtlasConfiguration, atlasConfigurationId);
output.SessionOutput.SessionState = StreamSessionState.Open;
output.SessionOutput.SessionStart = start.Date;
output.SessionOutput.SessionIdentifier = "random_walk";
output.SessionOutput.SendSession();
// generate data points
var data = outputFeed.MakeTelemetryData(1000000, epoch);
var param = data.Parameters[0];
var rangeWalker = new RandomRangeWalker(0, 1);
for (var step = 1; step <= steps; step++)
{
Thread.Sleep(delay);
for (var i = 0; i < 1000000; i++)
{
// writing a single data point for simplicity, but you can send chunks of data
// timestamps expressed in ns since the epoch (which is the start of the session)
var elapsedNs = step * delay * 1000000L;
data.TimestampsNanos[i] = elapsedNs;
param.Statuses[i] = DataStatus.Sample;
var value = rangeWalker.GetNext();
param.AvgValues[i] = value;
output.SessionOutput.SessionDurationNanos = elapsedNs;
//Logger.Info(NumberToBarString.Convert(value));
}
outputFeed.EnqueueAndSendData(data);
}
output.SessionOutput.SessionState = StreamSessionState.Closed;
output.SessionOutput.SendSession();
}