func AppendRepeatingValuesTests(p MetricPersistence, t test.Tester) {
metric := model.Metric{
model.MetricNameLabel: "errors_total",
"controller": "foo",
"operation": "bar",
}
increments := 10
repetitions := 500
for i := 0; i < increments; i++ {
for j := 0; j < repetitions; j++ {
time := time.Time{}.Add(time.Duration(i) * time.Hour).Add(time.Duration(j) * time.Second)
testAppendSample(p, model.Sample{
Value: model.SampleValue(i),
Timestamp: time,
Metric: metric,
}, t)
}
}
if true {
// XXX: Purely a benchmark.
return
}
labelSet := model.LabelSet{
model.MetricNameLabel: "errors_total",
"controller": "foo",
"operation": "bar",
}
for i := 0; i < increments; i++ {
for j := 0; j < repetitions; j++ {
fingerprints, err := p.GetFingerprintsForLabelSet(labelSet)
if err != nil {
t.Fatal(err)
}
if len(fingerprints) != 1 {
t.Fatalf("expected %d fingerprints, got %d", 1, len(fingerprints))
}
time := time.Time{}.Add(time.Duration(i) * time.Hour).Add(time.Duration(j) * time.Second)
sample, err := p.GetValueAtTime(fingerprints[0], time, StalenessPolicy{})
if err != nil {
t.Fatal(err)
}
if sample == nil {
t.Fatal("expected non-nil sample.")
}
expected := model.SampleValue(i)
if sample.Value != expected {
t.Fatalf("expected %d value, got %d", expected, sample.Value)
}
}
}
}