traefik/vendor/gopkg.in/DataDog/dd-trace-go.v1/internal/globalconfig/globalconfig.go

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// Package globalconfig stores configuration which applies globally to both the tracer
// and integrations.
package globalconfig
import "sync"
var cfg = &config{}
type config struct {
mu sync.RWMutex
analyticsRate float64
}
// AnalyticsRate returns the sampling rate at which events should be marked. It uses
// synchronizing mechanisms, meaning that for optimal performance it's best to read it
// once and store it.
func AnalyticsRate() float64 {
cfg.mu.RLock()
defer cfg.mu.RUnlock()
return cfg.analyticsRate
}
// SetAnalyticsRate sets the given event sampling rate globally.
func SetAnalyticsRate(rate float64) {
cfg.mu.Lock()
cfg.analyticsRate = rate
cfg.mu.Unlock()
}