micro/sync/time/ntp/ntp.go
2019-05-31 00:43:23 +01:00

52 lines
880 B
Go

// Package ntp provides ntp synchronized time
package ntp
import (
"context"
gotime "time"
"github.com/beevik/ntp"
"github.com/micro/go-micro/sync/time"
)
type ntpTime struct {
server string
}
type ntpServerKey struct{}
func (n *ntpTime) Now() (gotime.Time, error) {
return ntp.Time(n.server)
}
// NewTime returns ntp time
func NewTime(opts ...time.Option) time.Time {
options := time.Options{
Context: context.Background(),
}
for _, o := range opts {
o(&options)
}
server := "time.google.com"
if k, ok := options.Context.Value(ntpServerKey{}).(string); ok {
server = k
}
return &ntpTime{
server: server,
}
}
// WithServer sets the ntp server
func WithServer(s string) time.Option {
return func(o *time.Options) {
if o.Context == nil {
o.Context = context.Background()
}
o.Context = context.WithValue(o.Context, ntpServerKey{}, s)
}
}