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* e2e docs * slasher docs * Merge branch 'other-package-godocs' of github.com:prysmaticlabs/prysm into other-package-godocs * all validator package comments * Merge branch 'master' into other-package-godocs * completed all other packages * Merge branch 'master' into other-package-godocs * Merge refs/heads/master into other-package-godocs
46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
// Package roughtime is a wrapper for a roughtime clock source.
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package roughtime
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import (
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"time"
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rt "github.com/cloudflare/roughtime"
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"github.com/sirupsen/logrus"
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)
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// offset is the difference between the system time and the time returned by
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// the roughtime server
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var offset time.Duration
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var log = logrus.WithField("prefix", "roughtime")
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func init() {
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t0 := time.Now()
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results := rt.Do(rt.Ecosystem, rt.DefaultQueryAttempts, rt.DefaultQueryTimeout, nil)
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// Compute the average difference between the system's time and the
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// Roughtime responses from the servers, rejecting responses whose radii
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// are larger than 2 seconds.
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var err error
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offset, err = rt.AvgDeltaWithRadiusThresh(results, t0, 2*time.Second)
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if err != nil {
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log.WithError(err).Error("Failed to calculate roughtime offset")
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}
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}
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// Since returns the duration since t, based on the roughtime response
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func Since(t time.Time) time.Duration {
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return Now().Sub(t)
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}
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// Until returns the duration until t, based on the roughtime response
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func Until(t time.Time) time.Duration {
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return t.Sub(Now())
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}
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// Now returns the current local time given the roughtime offset.
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func Now() time.Time {
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return time.Now().Add(offset)
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}
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