// getDescription returns the description of data.
private static @string getDescription(metric.Data data)
{
switch (data.type())
{
case ptr <metric.Int64Data> d:
return(d.Info.Description);
break;
case ptr <metric.Float64Data> d:
return(d.Info.Description);
break;
case ptr <metric.HistogramInt64Data> d:
return(d.Info.Description);
break;
case ptr <metric.HistogramFloat64Data> d:
return(d.Info.Description);
break;
}
return("");
}
// dataToMetricDescriptorType returns a wire.MetricDescriptor_Type based on the
// underlying type of data.
private static wire.MetricDescriptor_Type dataToMetricDescriptorType(metric.Data data)
{
switch (data.type())
{
case ptr <metric.Int64Data> d:
if (d.IsGauge)
{
return(wire.MetricDescriptor_GAUGE_INT64);
}
return(wire.MetricDescriptor_CUMULATIVE_INT64);
break;
case ptr <metric.Float64Data> d:
if (d.IsGauge)
{
return(wire.MetricDescriptor_GAUGE_DOUBLE);
}
return(wire.MetricDescriptor_CUMULATIVE_DOUBLE);
break;
case ptr <metric.HistogramInt64Data> d:
return(wire.MetricDescriptor_CUMULATIVE_DISTRIBUTION);
break;
case ptr <metric.HistogramFloat64Data> d:
return(wire.MetricDescriptor_CUMULATIVE_DISTRIBUTION);
break;
}
return(wire.MetricDescriptor_UNSPECIFIED);
}
// getLabelKeys returns a slice of *wire.LabelKeys based on the keys
// in data.
private static slice <ptr <wire.LabelKey> > getLabelKeys(metric.Data data)
{
switch (data.type())
{
case ptr <metric.Int64Data> d:
return(infoKeysToLabelKeys(d.Info.Keys));
break;
case ptr <metric.Float64Data> d:
return(infoKeysToLabelKeys(d.Info.Keys));
break;
case ptr <metric.HistogramInt64Data> d:
return(infoKeysToLabelKeys(d.Info.Keys));
break;
case ptr <metric.HistogramFloat64Data> d:
return(infoKeysToLabelKeys(d.Info.Keys));
break;
}
return(null);
}
// dataToMetricDescriptor return a *wire.MetricDescriptor based on data.
private static ptr <wire.MetricDescriptor> dataToMetricDescriptor(metric.Data data)
{
if (data == null)
{
return(_addr_null !);
}
ptr <wire.MetricDescriptor> descriptor = addr(new wire.MetricDescriptor(Name: data.Handle(), Description: getDescription(data), Type: dataToMetricDescriptorType(data), LabelKeys: getLabelKeys(data), ));
return(_addr_descriptor !);
}
// dataToTimeseries returns a slice of *wire.TimeSeries based on the
// points in data.
private static slice <ptr <wire.TimeSeries> > dataToTimeseries(metric.Data data, time.Time start)
{
if (data == null)
{
return(null);
}
var numRows = numRows(data);
ref var startTimestamp = ref heap(convertTimestamp(start), out ptr <var> _addr_startTimestamp);
