monitor/pkg/limiter.go

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package pkg
import (
"sync"
"time"
)
type LimiterServer struct {
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interval time.Duration
maxCount int
sync.Mutex
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reqCount int
time time.Time
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}
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func NewLimiterServer(interval time.Duration, maxCount int) *LimiterServer {
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return &LimiterServer{
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interval: interval,
maxCount: maxCount,
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}
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}
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func (limiter *LimiterServer) IsAvailable() bool {
limiter.Lock()
defer limiter.Unlock()
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now := time.Now()
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if limiter.time.IsZero() ||
limiter.time.Add(limiter.interval).Before(now) {
limiter.reqCount = 0
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}
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if limiter.reqCount < limiter.maxCount {
limiter.reqCount += 1
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limiter.time = now
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return true
}
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return false
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}