public void Can_gauge_scalar_value()
{
var queue = new Queue<int>();
var gauge = new Gauge<int>(() => queue.Count);
queue.Enqueue(5);
Assert.AreEqual(1, gauge.Value);
queue.Enqueue(6);
queue.Dequeue();
Assert.AreEqual(1, gauge.Value);
queue.Dequeue();
Assert.AreEqual(0, gauge.Value);
}
public void Can_derive()
{
int sum = 0;
Gauge<int> baseGauge = new Gauge<int>(() => 1);
DerivativeGauge<int, int> derivativeGauge = new DerivativeGauge<int, int>(baseGauge,
(x) =>
{ sum += x; return sum; }
);
Assert.AreEqual(1, derivativeGauge.Value);
Assert.AreEqual(2, derivativeGauge.Value);
Assert.AreEqual(3, derivativeGauge.Value);
Assert.AreEqual(4, derivativeGauge.Value);
Assert.AreEqual(4, sum);
}
private void reportGauge(long timestamp, MetricName name, Gauge gauge)
{
report(timestamp, name, "value", gauge.ValueAsString);
}
private void reportGauge(MetricName name, Gauge gauge, long timestamp)
{
string value = format(gauge.ValueAsString);
if (value != null)
{
graphite.Send(Prefix(name), value, timestamp);
}
}