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36 lines
807 B
36 lines
807 B
4 years ago
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package ntp
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import (
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"time"
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beevik_ntp "github.com/beevik/ntp"
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)
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const (
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// tolerance range of local clock with NTP time server
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toleranceRange = time.Duration(50 * time.Millisecond)
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)
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// IsLocalTimeAccurate returns whether the local clock acturate or not
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func IsLocalTimeAccurate(ntpServer string) bool {
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response, err := beevik_ntp.Query(ntpServer)
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// failed to query ntp time, return false
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if err != nil {
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return false
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}
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if response.ClockOffset > toleranceRange {
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return false
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}
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return true
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}
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// CurrentTime return the current time calibrated using ntp server
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func CurrentTime(ntpServer string) time.Time {
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options := beevik_ntp.QueryOptions{Timeout: 2 * time.Second}
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t, err := beevik_ntp.QueryWithOptions(ntpServer, options)
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if err == nil {
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return t.Time
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}
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return time.Now()
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}
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