func TestPrintDistribution(t *testing.T) {
var (
quantiles = []int{50, 90, 95, 99}
h = expvar.NewHistogram("test_print_distribution", 0, 100, 3, quantiles...)
seed = int64(555)
mean = int64(5)
stdev = int64(1)
)
teststat.PopulateNormalHistogram(t, h, seed, mean, stdev)
var buf bytes.Buffer
metrics.PrintDistribution(&buf, h)
t.Logf("\n%s\n", buf.String())
// Count the number of bar chart characters.
// We should have ca. 100 in any distribution with a small-enough stdev.
var n int
for _, r := range buf.String() {
if r == '#' {
n++
}
}
if want, have, tol := 100, n, 5; int(math.Abs(float64(want-have))) > tol {
t.Errorf("want %d, have %d (tolerance %d)", want, have, tol)
}
}
// have to pass in name because metrics.Histogram blocks expvar.Histogram.Name()
func SaveHist(h metrics.Histogram, name, suffix string) {
if archaius.Conf.Collect {
file, err := os.Create("csv_metrics/" + names.Arch(name) + "_" + names.Instance(name) + suffix + ".csv")
if err != nil {
log.Printf("%v: %v\n", name, err)
}
metrics.PrintDistribution(file, h)
file.Close()
}
}
// have to pass in name because metrics.Histogram blocks expvar.Historgram.Name()
func SaveHist(h metrics.Histogram, name, suffix string) {
if archaius.Conf.Collect {
file, err := os.Create("csv_metrics/" + names.Arch(name) + "_" + names.Machine(name) + suffix + ".csv")
if err != nil {
log.Printf("%v: %v\n", name, err)
}
metrics.PrintDistribution(file, h)
file.Close()
//Sample data is written out by SaveAllGuesses now
//dfile, err := os.Create("csv_metrics/" + names.Arch(name) + "_" + names.Machine(name) + suffix + ".data")
//if err != nil {
// log.Printf("%v: %v\n", name, err)
//}
//sj, _ := json.Marshal(sampleMap[h])
//dfile.WriteString(fmt.Sprintf("%v", string(sj)))
//dfile.Close()
}
}