private static void WriteFamily(StreamWriter streamWriter, CMetricFamily cMetricFamily)
{
streamWriter.WriteLine("# HELP {0} {1}", cMetricFamily.Name, cMetricFamily.Help);
streamWriter.WriteLine("# TYPE {0} {1}", cMetricFamily.Name, cMetricFamily.Type);
foreach (var metric in cMetricFamily.Metrics)
{
WriteMetric(streamWriter, cMetricFamily, metric);
}
}
private static string WriteFamily(CMetricFamily cMetricFamily)
{
var s = new StringBuilder();
s.AppendLine($"# HELP {cMetricFamily.Name} {cMetricFamily.Help}");
s.AppendLine($"# TYPE {cMetricFamily.Name} {cMetricFamily.Type}");
foreach (var metric in cMetricFamily.Metrics)
{
s.Append(WriteMetric(cMetricFamily, metric));
}
return(s.ToString());
}
public CMetricFamily Collect()
{
var result = new CMetricFamily
{
Name = Name,
Help = _help,
Type = Type
};
foreach (var child in LabelledMetrics.Values)
{
result.Metrics.Add(child.Collect());
}
return(result);
}
public void Family_Should_Be_Formatted_To_One_Line(string labelValue)
{
using (var ms = new MemoryStream())
{
var metricFamily = new CMetricFamily
{
Name = "family1",
Help = "help",
Type = CMetricType.Counter
};
var metricCounter = new CCounter {
Value = 100
};
metricFamily.Metrics = new[]
{
new CMetric
{
CCounter = metricCounter,
Labels = new[]
{
new CLabelPair {
Name = "label1", Value = labelValue
}
}
}
};
TextFormatter.Format(ms, new[]
{
metricFamily
});
using (var sr = new StringReader(Encoding.UTF8.GetString(ms.ToArray())))
{
var linesCount = 0;
var line = "";
while ((line = sr.ReadLine()) != null)
{
Console.WriteLine(line);
linesCount += 1;
}
Assert.Equal(3, linesCount);
}
}
}
private static string WriteMetric(CMetricFamily family, CMetric cMetric)
{
var s = new StringBuilder();
var familyName = family.Name;
if (cMetric.CGauge != null)
{
s.AppendLine(SimpleValue(familyName, cMetric.CGauge.Value, cMetric.Labels));
}
else if (cMetric.CCounter != null)
{
s.AppendLine(SimpleValue(familyName, cMetric.CCounter.Value, cMetric.Labels));
}
else if (cMetric.CSummary != null)
{
s.AppendLine(SimpleValue(familyName, cMetric.CSummary.SampleSum, cMetric.Labels, "_sum"));
s.AppendLine(SimpleValue(familyName, cMetric.CSummary.SampleCount, cMetric.Labels, "_count"));
foreach (var quantileValuePair in cMetric.CSummary.Quantiles)
{
var quantile = double.IsPositiveInfinity(quantileValuePair.Quantile)
? "+Inf"
: quantileValuePair.Quantile.ToString(CultureInfo.InvariantCulture);
s.AppendLine(SimpleValue(familyName, quantileValuePair.Value,
cMetric.Labels.Concat(new[] { new CLabelPair {
Name = "quantile", Value = quantile
} })));
}
}
else if (cMetric.CHistogram != null)
{
s.AppendLine(SimpleValue(familyName, cMetric.CHistogram.SampleSum, cMetric.Labels, "_sum"));
s.AppendLine(SimpleValue(familyName, cMetric.CHistogram.SampleCount, cMetric.Labels, "_count"));
foreach (var bucket in cMetric.CHistogram.Buckets)
{
var value = double.IsPositiveInfinity(bucket.UpperBound) ? "+Inf" : bucket.UpperBound.ToString(CultureInfo.InvariantCulture);
s.AppendLine(SimpleValue(familyName, bucket.CumulativeCount, cMetric.Labels.Concat(new[] { new CLabelPair {
Name = "le", Value = value
} }),
"_bucket"));
}
}
return(s.ToString());
}
public CMetricFamily Collect()
{
var result = new CMetricFamily
{
Name = Name,
Help = _help,
Type = Type,
Metrics = new CMetric[LabelledMetrics.Values.Count]
};
var i = 0;
foreach (var child in LabelledMetrics.Values)
{
result.Metrics[i] = child.Collect();
i++;
}
return(result);
}
