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kratos/pkg/stat/metric/reduce.go

77 lines
1.4 KiB

package metric
// Sum the values within the window.
func Sum(iterator Iterator) float64 {
var result = 0.0
for iterator.Next() {
bucket := iterator.Bucket()
for _, p := range bucket.Points {
result = result + p
}
}
return result
}
// Avg the values within the window.
func Avg(iterator Iterator) float64 {
var result = 0.0
var count = 0.0
for iterator.Next() {
bucket := iterator.Bucket()
for _, p := range bucket.Points {
result = result + p
count = count + 1
}
}
return result / count
}
// Min the values within the window.
func Min(iterator Iterator) float64 {
var result = 0.0
var started = false
for iterator.Next() {
bucket := iterator.Bucket()
for _, p := range bucket.Points {
if !started {
result = p
started = true
continue
}
if p < result {
result = p
}
}
}
return result
}
// Max the values within the window.
func Max(iterator Iterator) float64 {
var result = 0.0
var started = false
for iterator.Next() {
bucket := iterator.Bucket()
for _, p := range bucket.Points {
if !started {
result = p
started = true
continue
}
if p > result {
result = p
}
}
}
return result
}
// Count sums the count value within the window.
func Count(iterator Iterator) float64 {
var result int64
for iterator.Next() {
bucket := iterator.Bucket()
result += bucket.Count
}
return float64(result)
}