58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package metricsutil
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import (
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"sort"
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"time"
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)
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var bucketBoundaries = []struct {
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Value time.Duration
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Label string
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}{
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{1 * time.Minute, "1m"},
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{10 * time.Minute, "10m"},
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{20 * time.Minute, "20m"},
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{1 * time.Hour, "1h"},
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{2 * time.Hour, "2h"},
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{24 * time.Hour, "1d"},
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{2 * 24 * time.Hour, "2d"},
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{7 * 24 * time.Hour, "7d"},
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{30 * 24 * time.Hour, "30d"},
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}
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const OverflowBucket = "+Inf"
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// TTLBucket computes the label to apply for a token TTL.
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func TTLBucket(ttl time.Duration) string {
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upperBound := sort.Search(
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len(bucketBoundaries),
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func(i int) bool {
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return ttl <= bucketBoundaries[i].Value
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},
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)
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if upperBound >= len(bucketBoundaries) {
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return OverflowBucket
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} else {
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return bucketBoundaries[upperBound].Label
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}
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}
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func ExpiryBucket(expiryTime time.Time, leaseEpsilon time.Duration, rollingWindow time.Time, labelNS string, useNS bool) *LeaseExpiryLabel {
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if !useNS {
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labelNS = ""
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}
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leaseExpiryLabel := LeaseExpiryLabel{LabelNS: labelNS}
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// calculate rolling window
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if expiryTime.Before(rollingWindow) {
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leaseExpiryLabel.LabelName = expiryTime.Round(leaseEpsilon).String()
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return &leaseExpiryLabel
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}
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return nil
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}
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type LeaseExpiryLabel = struct {
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LabelName string
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LabelNS string
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}
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