mirror of https://github.com/milvus-io/milvus.git
45 lines
1.0 KiB
Go
45 lines
1.0 KiB
Go
package syncutil
|
|
|
|
import (
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
// NewCooldownNotifier creates a new CooldownNotifier with the specified cooldown duration and buffer size.
|
|
func NewCooldownNotifier[T any](cooldown time.Duration, buffed int) *CooldownNotifier[T] {
|
|
return &CooldownNotifier[T]{
|
|
cooldown: cooldown,
|
|
notifier: make(chan T, buffed),
|
|
}
|
|
}
|
|
|
|
// CooldownNotifier is a utility that sends notifications after a specified cooldown period.
|
|
type CooldownNotifier[T any] struct {
|
|
mu sync.Mutex
|
|
lastNotifyInstant time.Time
|
|
cooldown time.Duration
|
|
notifier chan T
|
|
}
|
|
|
|
// Notify sends a notification if the cooldown period has passed since the last notification.
|
|
func (cn *CooldownNotifier[T]) Notify(t T) {
|
|
cn.mu.Lock()
|
|
now := time.Now()
|
|
if now.Sub(cn.lastNotifyInstant) < cn.cooldown {
|
|
cn.mu.Unlock()
|
|
return
|
|
}
|
|
cn.lastNotifyInstant = now
|
|
cn.mu.Unlock()
|
|
|
|
select {
|
|
case cn.notifier <- t:
|
|
default:
|
|
}
|
|
}
|
|
|
|
// Chan returns a channel that is closed when the cooldown is over.
|
|
func (cn *CooldownNotifier[T]) Chan() <-chan T {
|
|
return cn.notifier
|
|
}
|