open-vault/vendor/github.com/shirou/gopsutil/host/host_solaris.go
Calvin Leung Huang 8c31e45860
hostutil: query stats with context, update gopsutil, refactor tests (#7769)
* hostutil: query stats with context, update gopsutil, refactor tests

* go mod vendor

* minor comment wording
2019-11-01 10:12:22 -07:00

254 lines
5.8 KiB
Go

package host
import (
"bufio"
"bytes"
"context"
"fmt"
"io/ioutil"
"os"
"os/exec"
"regexp"
"runtime"
"strconv"
"strings"
"time"
"github.com/shirou/gopsutil/internal/common"
)
func Info() (*InfoStat, error) {
return InfoWithContext(context.Background())
}
func InfoWithContext(ctx context.Context) (*InfoStat, error) {
result := &InfoStat{
OS: runtime.GOOS,
}
hostname, err := os.Hostname()
if err != nil {
return nil, err
}
result.Hostname = hostname
// Parse versions from output of `uname(1)`
uname, err := exec.LookPath("uname")
if err != nil {
return nil, err
}
out, err := invoke.CommandWithContext(ctx, uname, "-srv")
if err != nil {
return nil, err
}
fields := strings.Fields(string(out))
if len(fields) >= 1 {
result.PlatformFamily = fields[0]
}
if len(fields) >= 2 {
result.KernelVersion = fields[1]
}
if len(fields) == 3 {
result.PlatformVersion = fields[2]
}
kernelArch, err := kernelArch()
if err == nil {
result.KernelArch = kernelArch
}
// Find distribution name from /etc/release
fh, err := os.Open("/etc/release")
if err != nil {
return nil, err
}
defer fh.Close()
sc := bufio.NewScanner(fh)
if sc.Scan() {
line := strings.TrimSpace(sc.Text())
switch {
case strings.HasPrefix(line, "SmartOS"):
result.Platform = "SmartOS"
case strings.HasPrefix(line, "OpenIndiana"):
result.Platform = "OpenIndiana"
case strings.HasPrefix(line, "OmniOS"):
result.Platform = "OmniOS"
case strings.HasPrefix(line, "Open Storage"):
result.Platform = "NexentaStor"
case strings.HasPrefix(line, "Solaris"):
result.Platform = "Solaris"
case strings.HasPrefix(line, "Oracle Solaris"):
result.Platform = "Solaris"
default:
result.Platform = strings.Fields(line)[0]
}
}
switch result.Platform {
case "SmartOS":
// If everything works, use the current zone ID as the HostID if present.
zonename, err := exec.LookPath("zonename")
if err == nil {
out, err := invoke.CommandWithContext(ctx, zonename)
if err == nil {
sc := bufio.NewScanner(bytes.NewReader(out))
for sc.Scan() {
line := sc.Text()
// If we're in the global zone, rely on the hostname.
if line == "global" {
hostname, err := os.Hostname()
if err == nil {
result.HostID = hostname
}
} else {
result.HostID = strings.TrimSpace(line)
break
}
}
}
}
}
// If HostID is still empty, use hostid(1), which can lie to callers but at
// this point there are no hardware facilities available. This behavior
// matches that of other supported OSes.
if result.HostID == "" {
hostID, err := exec.LookPath("hostid")
if err == nil {
out, err := invoke.CommandWithContext(ctx, hostID)
if err == nil {
sc := bufio.NewScanner(bytes.NewReader(out))
for sc.Scan() {
line := sc.Text()
result.HostID = strings.TrimSpace(line)
break
}
}
}
}
// Find the boot time and calculate uptime relative to it
bootTime, err := BootTime()
if err != nil {
return nil, err
}
result.BootTime = bootTime
result.Uptime = uptimeSince(bootTime)
// Count number of processes based on the number of entries in /proc
dirs, err := ioutil.ReadDir("/proc")
if err != nil {
return nil, err
}
result.Procs = uint64(len(dirs))
return result, nil
}
var kstatMatch = regexp.MustCompile(`([^\s]+)[\s]+([^\s]*)`)
func BootTime() (uint64, error) {
return BootTimeWithContext(context.Background())
}
func BootTimeWithContext(ctx context.Context) (uint64, error) {
kstat, err := exec.LookPath("kstat")
if err != nil {
return 0, err
}
out, err := invoke.CommandWithContext(ctx, kstat, "-p", "unix:0:system_misc:boot_time")
if err != nil {
return 0, err
}
kstats := kstatMatch.FindAllStringSubmatch(string(out), -1)
if len(kstats) != 1 {
return 0, fmt.Errorf("expected 1 kstat, found %d", len(kstats))
}
return strconv.ParseUint(kstats[0][2], 10, 64)
}
func Uptime() (uint64, error) {
return UptimeWithContext(context.Background())
}
func UptimeWithContext(ctx context.Context) (uint64, error) {
bootTime, err := BootTime()
if err != nil {
return 0, err
}
return uptimeSince(bootTime), nil
}
func uptimeSince(since uint64) uint64 {
return uint64(time.Now().Unix()) - since
}
func Users() ([]UserStat, error) {
return UsersWithContext(context.Background())
}
func UsersWithContext(ctx context.Context) ([]UserStat, error) {
return []UserStat{}, common.ErrNotImplementedError
}
func SensorsTemperatures() ([]TemperatureStat, error) {
return SensorsTemperaturesWithContext(context.Background())
}
func SensorsTemperaturesWithContext(ctx context.Context) ([]TemperatureStat, error) {
return []TemperatureStat{}, common.ErrNotImplementedError
}
func Virtualization() (string, string, error) {
return VirtualizationWithContext(context.Background())
}
func VirtualizationWithContext(ctx context.Context) (string, string, error) {
return "", "", common.ErrNotImplementedError
}
func KernelVersion() (string, error) {
return KernelVersionWithContext(context.Background())
}
func KernelVersionWithContext(ctx context.Context) (string, error) {
// Parse versions from output of `uname(1)`
uname, err := exec.LookPath("uname")
if err != nil {
return "", err
}
out, err := invoke.CommandWithContext(ctx, uname, "-srv")
if err != nil {
return "", err
}
fields := strings.Fields(string(out))
if len(fields) >= 2 {
return fields[1], nil
}
return "", fmt.Errorf("could not get kernel version")
}
func PlatformInformation() (platform string, family string, version string, err error) {
return PlatformInformationWithContext(context.Background())
}
func PlatformInformationWithContext(ctx context.Context) (platform string, family string, version string, err error) {
/* This is not finished yet at all. Please contribute! */
version, err = KernelVersion()
if err != nil {
return "", "", "", err
}
return "solaris", "solaris", version, nil
}