forked from TrueCloudLab/lego
47 lines
936 B
Go
47 lines
936 B
Go
package dns
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import (
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"fmt"
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"time"
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)
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// ToFqdn converts the name into a fqdn appending a trailing dot.
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func ToFqdn(name string) string {
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n := len(name)
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if n == 0 || name[n-1] == '.' {
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return name
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}
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return name + "."
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}
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// UnFqdn converts the fqdn into a name removing the trailing dot.
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func UnFqdn(name string) string {
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n := len(name)
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if n != 0 && name[n-1] == '.' {
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return name[:n-1]
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}
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return name
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}
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// WaitFor polls the given function 'f', once every 'interval' seconds, up to 'timeout' seconds.
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func WaitFor(timeout, interval int, f func() (bool, error)) error {
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var lastErr string
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timeup := time.After(time.Duration(timeout) * time.Second)
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for {
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select {
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case <-timeup:
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return fmt.Errorf("Time limit exceeded. Last error: %s", lastErr)
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default:
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}
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stop, err := f()
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if stop {
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return nil
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}
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if err != nil {
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lastErr = err.Error()
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}
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time.Sleep(time.Duration(interval) * time.Second)
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}
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}
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