62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Package tstime defines Tailscale-specific time utilities.
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package tstime
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import (
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"context"
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"strconv"
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"strings"
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"time"
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)
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// Parse3339 is a wrapper around time.Parse(time.RFC3339, s).
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func Parse3339(s string) (time.Time, error) {
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return time.Parse(time.RFC3339, s)
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}
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// Parse3339B is Parse3339 but for byte slices.
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func Parse3339B(b []byte) (time.Time, error) {
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var t time.Time
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if err := t.UnmarshalText(b); err != nil {
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return Parse3339(string(b)) // reproduce same error message
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}
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return t, nil
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}
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// ParseDuration is more expressive than [time.ParseDuration],
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// also accepting 'd' (days) and 'w' (weeks) literals.
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func ParseDuration(s string) (time.Duration, error) {
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for {
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end := strings.IndexAny(s, "dw")
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if end < 0 {
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break
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}
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start := end - (len(s[:end]) - len(strings.TrimRight(s[:end], "0123456789")))
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n, err := strconv.Atoi(s[start:end])
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if err != nil {
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return 0, err
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}
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hours := 24
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if s[end] == 'w' {
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hours *= 7
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}
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s = s[:start] + s[end+1:] + strconv.Itoa(n*hours) + "h"
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}
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return time.ParseDuration(s)
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}
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// Sleep is like [time.Sleep] but returns early upon context cancelation.
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// It reports whether the full sleep duration was achieved.
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func Sleep(ctx context.Context, d time.Duration) bool {
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timer := time.NewTimer(d)
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defer timer.Stop()
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select {
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case <-ctx.Done():
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return false
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case <-timer.C:
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return true
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}
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}
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