cyph3rasi
29 lines
671 B
Go
29 lines
671 B
Go
package hop
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import (
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"crypto/rand"
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"encoding/base32"
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"fmt"
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"strings"
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"time"
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)
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var idEncoding = base32.NewEncoding("0123456789ABCDEFGHJKMNPQRSTVWXYZ").WithPadding(base32.NoPadding)
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func newID(prefix string) string {
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var entropy [8]byte
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if _, err := rand.Read(entropy[:]); err != nil {
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panic(fmt.Sprintf("generate id: %v", err))
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}
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stamp := uint64(time.Now().UTC().UnixMilli())
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var raw [14]byte
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raw[0] = byte(stamp >> 40)
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raw[1] = byte(stamp >> 32)
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raw[2] = byte(stamp >> 24)
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raw[3] = byte(stamp >> 16)
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raw[4] = byte(stamp >> 8)
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raw[5] = byte(stamp)
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copy(raw[6:], entropy[:])
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return strings.ToUpper(prefix) + "_" + idEncoding.EncodeToString(raw[:])
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}
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