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// SPDX-License-Identifier: GPL-3.0-or-later
package chrony
import (
"fmt"
"time"
)
const scaleFactor = 1000000000
func (c *Chrony) collect() (map[string]int64, error) {
if c.client == nil {
client, err := c.newClient(c.Config)
if err != nil {
return nil, err
}
c.client = client
}
mx := make(map[string]int64)
if err := c.collectTracking(mx); err != nil {
return nil, err
}
if err := c.collectActivity(mx); err != nil {
return mx, err
}
return mx, nil
}
const (
// https://github.com/mlichvar/chrony/blob/7daf34675a5a2487895c74d1578241ca91a4eb70/ntp.h#L70-L75
leapStatusNormal = 0
leapStatusInsertSecond = 1
leapStatusDeleteSecond = 2
leapStatusUnsynchronised = 3
)
func (c *Chrony) collectTracking(mx map[string]int64) error {
reply, err := c.client.Tracking()
if err != nil {
return fmt.Errorf("error on collecting tracking: %v", err)
}
mx["stratum"] = int64(reply.Stratum)
mx["leap_status_normal"] = boolToInt(reply.LeapStatus == leapStatusNormal)
mx["leap_status_insert_second"] = boolToInt(reply.LeapStatus == leapStatusInsertSecond)
mx["leap_status_delete_second"] = boolToInt(reply.LeapStatus == leapStatusDeleteSecond)
mx["leap_status_unsynchronised"] = boolToInt(reply.LeapStatus == leapStatusUnsynchronised)
mx["root_delay"] = int64(reply.RootDelay * scaleFactor)
mx["root_dispersion"] = int64(reply.RootDispersion * scaleFactor)
mx["skew"] = int64(reply.SkewPPM * scaleFactor)
mx["last_offset"] = int64(reply.LastOffset * scaleFactor)
mx["rms_offset"] = int64(reply.RMSOffset * scaleFactor)
mx["update_interval"] = int64(reply.LastUpdateInterval * scaleFactor)
// handle chrony restarts
if reply.RefTime.Year() != 1970 {
mx["ref_measurement_time"] = time.Now().Unix() - reply.RefTime.Unix()
}
mx["residual_frequency"] = int64(reply.ResidFreqPPM * scaleFactor)
// https://github.com/mlichvar/chrony/blob/5b04f3ca902e5d10aa5948fb7587d30b43941049/client.c#L1706
mx["current_correction"] = abs(int64(reply.CurrentCorrection * scaleFactor))
mx["frequency"] = abs(int64(reply.FreqPPM * scaleFactor))
return nil
}
func (c *Chrony) collectActivity(mx map[string]int64) error {
reply, err := c.client.Activity()
if err != nil {
return fmt.Errorf("error on collecting activity: %v", err)
}
mx["online_sources"] = int64(reply.Online)
mx["offline_sources"] = int64(reply.Offline)
mx["burst_online_sources"] = int64(reply.BurstOnline)
mx["burst_offline_sources"] = int64(reply.BurstOffline)
mx["unresolved_sources"] = int64(reply.Unresolved)
return nil
}
func boolToInt(v bool) int64 {
if v {
return 1
}
return 0
}
func abs(v int64) int64 {
if v < 0 {
return -v
}
return v
}
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