/
metrics.go
69 lines (63 loc) · 1.13 KB
/
metrics.go
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package pipeline
import (
"sync"
"time"
)
type metrics struct {
initialized bool
minTime uint64
maxTime uint64
sumTime uint64
count uint64
locking bool
sync.Mutex
}
type metricsResult struct {
Min string `json:"min"`
Avg string `json:"avg"`
Max string `json:"max"`
Count uint64 `json:"count"`
}
func newMetrics(locking bool) *metrics {
return &metrics{
locking: locking,
}
}
func (m *metrics) recordDuration(d time.Duration) {
duration := uint64(d)
if m.locking {
m.Lock()
}
if !m.initialized {
m.minTime = duration
m.maxTime = duration
m.initialized = true
} else {
if duration < m.minTime {
m.minTime = duration
}
if duration > m.maxTime {
m.maxTime = duration
}
}
m.sumTime += duration
m.count++
if m.locking {
m.Unlock()
}
}
func (m *metrics) results() *metricsResult {
if m.locking {
m.Lock()
}
min := time.Duration(m.minTime)
avg := time.Duration(0)
if m.count > 0 {
avg = time.Duration(m.sumTime / m.count)
}
max := time.Duration(m.maxTime)
if m.locking {
m.Unlock()
}
return &metricsResult{min.String(), avg.String(), max.String(), m.count}
}