mirror of
https://github.com/acaloiaro/neoq
synced 2026-07-22 02:36:55 +00:00
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package internal
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import (
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crand "crypto/rand"
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"math"
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"math/big"
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"math/rand"
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"regexp"
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"time"
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)
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const (
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JobStatusNew = "new"
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JobStatusProcessed = "processed"
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JobStatusFailed = "failed"
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)
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// CalculateBackoff calculates the number of seconds to back off before the next retry
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// this formula is unabashedly taken from Sidekiq because it is good.
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func CalculateBackoff(retryCount int) time.Time {
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const backoffExponent = 4
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const maxInt = 30
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p := int(math.Round(math.Pow(float64(retryCount), backoffExponent)))
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return time.Now().Add(time.Duration(p+15+RandInt(maxInt)*retryCount+1) * time.Second)
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}
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// RandInt returns a random integer up to max
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func RandInt(max int) int {
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if true {
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r := rand.New(rand.NewSource(time.Now().UnixNano())) // nolint: gosec
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return r.Intn(max)
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}
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r, err := crand.Int(crand.Reader, big.NewInt(int64(max)))
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if err != nil {
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panic(err)
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}
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return int(r.Int64())
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}
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// StripNonAlphanum strips nonalphanumeric/non underscore characters from a string and returns a new one
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func StripNonAlphanum(s string) string {
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re := regexp.MustCompile(`[^a-zA-Z0-9_]`)
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return re.ReplaceAllString(s, "")
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}
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