// collect collects sysstat data with the collector utility sadc.
// It runs the following command:
// Sadc -S <Activity1> -S <Activity2> ... <collectInterval> 2 tmpFile
// The above command collects system metrics during <collectInterval> and
// saves it in binary form to tmpFile.
func (s *Sysstat) collect() error {
options := []string{}
for _, act := range s.Activities {
options = append(options, "-S", act)
}
s.tmpFile = path.Join("/tmp", fmt.Sprintf("sysstat-%d", time.Now().Unix()))
// collectInterval has to be smaller than the telegraf data collection interval
collectInterval := s.interval - parseInterval
// If true, interval is not defined yet and Gather is run for the first time.
if collectInterval < 0 {
collectInterval = 1 // In that case we only collect for 1 second.
}
options = append(options, strconv.Itoa(collectInterval), "2", s.tmpFile)
cmd := execCommand(s.Sadc, options...)
out, err := internal.CombinedOutputTimeout(cmd, time.Second*time.Duration(collectInterval+parseInterval))
if err != nil {
if err := os.Remove(s.tmpFile); err != nil {
log.Printf("failed to remove tmp file after %s command: %s", strings.Join(cmd.Args, " "), err)
}
return fmt.Errorf("failed to run command %s: %s - %s", strings.Join(cmd.Args, " "), err, string(out))
}
return nil
}
func hostPinger(timeout float64, args ...string) (string, error) {
bin, err := exec.LookPath("ping")
if err != nil {
return "", err
}
c := exec.Command(bin, args...)
out, err := internal.CombinedOutputTimeout(c,
time.Second*time.Duration(timeout+1))
return string(out), err
}
func (t CommandRunner) Run(conn *Connection, args ...string) (string, error) {
cmd := t.cmd(conn, args...)
output, err := internal.CombinedOutputTimeout(cmd, time.Second*5)
if err != nil {
return "", fmt.Errorf("run %s %s: %s (%s)",
cmd.Path, strings.Join(cmd.Args, " "), string(output), err)
}
return string(output), err
}
// parse forks the command:
// sensors -u -A
// and parses the output to add it to the telegraf.Accumulator.
func (s *Sensors) parse(acc telegraf.Accumulator) error {
tags := map[string]string{}
fields := map[string]interface{}{}
chip := ""
cmd := execCommand(s.path, "-A", "-u")
out, err := internal.CombinedOutputTimeout(cmd, time.Second*5)
if err != nil {
return fmt.Errorf("failed to run command %s: %s - %s", strings.Join(cmd.Args, " "), err, string(out))
}
lines := strings.Split(strings.TrimSpace(string(out)), "\n")
for _, line := range lines {
if len(line) == 0 {
acc.AddFields("sensors", fields, tags)
chip = ""
tags = map[string]string{}
fields = map[string]interface{}{}
continue
}
if len(chip) == 0 {
chip = line
tags["chip"] = chip
continue
}
if !strings.HasPrefix(line, " ") {
if len(tags) > 1 {
acc.AddFields("sensors", fields, tags)
}
fields = map[string]interface{}{}
tags = map[string]string{
"chip": chip,
"feature": strings.TrimRight(snake(line), ":"),
}
} else {
splitted := strings.Split(line, ":")
fieldName := strings.TrimSpace(splitted[0])
if s.RemoveNumbers {
fieldName = numberRegp.ReplaceAllString(fieldName, "")
}
fieldValue, err := strconv.ParseFloat(strings.TrimSpace(splitted[1]), 64)
if err != nil {
return err
}
fields[fieldName] = fieldValue
}
}
acc.AddFields("sensors", fields, tags)
return nil
}
func (c *Chrony) Gather(acc telegraf.Accumulator) error {
if len(c.path) == 0 {
return errors.New("chronyc not found: verify that chrony is installed and that chronyc is in your PATH")
}
cmd := execCommand(c.path, "tracking")
out, err := internal.CombinedOutputTimeout(cmd, time.Second*5)
if err != nil {
return fmt.Errorf("failed to run command %s: %s - %s", strings.Join(cmd.Args, " "), err, string(out))
}
fields, tags, err := processChronycOutput(string(out))
if err != nil {
return err
}
acc.AddFields("chrony", fields, tags)
return nil
}