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// SPDX-License-Identifier: GPL-3.0-or-later
package chrony
import (
"fmt"
"net"
"github.com/facebook/time/ntp/chrony"
)
func newChronyClient(c Config) (chronyClient, error) {
conn, err := net.DialTimeout("udp", c.Address, c.Timeout.Duration())
if err != nil {
return nil, err
}
client := &simpleClient{
conn: conn,
client: &chrony.Client{Connection: conn},
}
return client, nil
}
type simpleClient struct {
conn net.Conn
client *chrony.Client
}
func (sc *simpleClient) Tracking() (*chrony.ReplyTracking, error) {
reply, err := sc.client.Communicate(chrony.NewTrackingPacket())
if err != nil {
return nil, err
}
tracking, ok := reply.(*chrony.ReplyTracking)
if !ok {
return nil, fmt.Errorf("unexpected reply type, want=%T, got=%T", &chrony.ReplyTracking{}, reply)
}
return tracking, nil
}
func (sc *simpleClient) Activity() (*chrony.ReplyActivity, error) {
reply, err := sc.client.Communicate(chrony.NewActivityPacket())
if err != nil {
return nil, err
}
activity, ok := reply.(*chrony.ReplyActivity)
if !ok {
return nil, fmt.Errorf("unexpected reply type, want=%T, got=%T", &chrony.ReplyActivity{}, reply)
}
return activity, nil
}
func (sc *simpleClient) Close() {
if sc.conn != nil {
_ = sc.conn.Close()
sc.conn = nil
}
}
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