Ejemplo n.º 1
0
func getKernelVersion() (major, minor int, err error) {
	var u syscall.Utsname
	if err = syscall.Uname(&u); err != nil {
		return
	}

	// Kernel versions are not always a semver, so we have to do minimal parsing.
	release := marshal.FromUtsname(u.Release)
	if n, err := fmt.Sscanf(release, "%d.%d", &major, &minor); err != nil || n != 2 {
		return 0, 0, fmt.Errorf("Malformed version: %s", release)
	}
	return
}
Ejemplo n.º 2
0
	"$GITHUB_URI/common/marshal"
	"$GITHUB_URI/report"
)

const kb = 1024

// Uname is swappable for mocking in tests.
var Uname = syscall.Uname

// GetKernelVersion returns the kernel version as reported by uname.
var GetKernelVersion = func() (string, error) {
	var utsname syscall.Utsname
	if err := Uname(&utsname); err != nil {
		return "unknown", err
	}
	release := marshal.FromUtsname(utsname.Release)
	version := marshal.FromUtsname(utsname.Version)
	return fmt.Sprintf("%s %s", release, version), nil
}

// GetLoad returns the current load averages as metrics.
var GetLoad = func(now time.Time) report.Metrics {
	buf, err := ioutil.ReadFile("/proc/loadavg")
	if err != nil {
		return nil
	}
	toks := strings.Fields(string(buf))
	if len(toks) < 3 {
		return nil
	}
	one, err := strconv.ParseFloat(toks[0], 64)