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// SPDX-License-Identifier: BSD-3-Clause
package host
import (
"context"
"encoding/json"
"errors"
"os"
"runtime"
"time"
"github.com/shirou/gopsutil/v4/internal/common"
)
type Warnings = common.Warnings
var invoke common.Invoker = common.Invoke{}
// A HostInfoStat describes the host status.
// This is not in the psutil but it useful.
type InfoStat struct {
Hostname string `json:"hostname"`
Uptime uint64 `json:"uptime"`
BootTime uint64 `json:"bootTime"`
Procs uint64 `json:"procs"` // number of processes
OS string `json:"os"` // ex: freebsd, linux
Platform string `json:"platform"` // ex: ubuntu, linuxmint
PlatformFamily string `json:"platformFamily"` // ex: debian, rhel
PlatformVersion string `json:"platformVersion"` // version of the complete OS
KernelVersion string `json:"kernelVersion"` // version of the OS kernel (if available)
KernelArch string `json:"kernelArch"` // native cpu architecture queried at runtime, as returned by `uname -m` or empty string in case of error
VirtualizationSystem string `json:"virtualizationSystem"`
VirtualizationRole string `json:"virtualizationRole"` // guest or host
HostID string `json:"hostId"` // ex: uuid
}
type UserStat struct {
User string `json:"user"`
Terminal string `json:"terminal"`
Host string `json:"host"`
Started int `json:"started"`
}
func (h InfoStat) String() string {
s, _ := json.Marshal(h)
return string(s)
}
func (u UserStat) String() string {
s, _ := json.Marshal(u)
return string(s)
}
var enableBootTimeCache bool
// EnableBootTimeCache change cache behavior of BootTime. If true, cache BootTime value. Default is false.
func EnableBootTimeCache(enable bool) {
enableBootTimeCache = enable
}
func Info() (*InfoStat, error) {
return InfoWithContext(context.Background())
}
func InfoWithContext(ctx context.Context) (*InfoStat, error) {
var err error
ret := &InfoStat{
OS: runtime.GOOS,
}
ret.Hostname, err = os.Hostname()
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
ret.Platform, ret.PlatformFamily, ret.PlatformVersion, err = PlatformInformationWithContext(ctx)
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
ret.KernelVersion, err = KernelVersionWithContext(ctx)
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
ret.KernelArch, err = KernelArch()
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
ret.VirtualizationSystem, ret.VirtualizationRole, err = VirtualizationWithContext(ctx)
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
ret.BootTime, err = BootTimeWithContext(ctx)
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
ret.Uptime, err = UptimeWithContext(ctx)
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
ret.Procs, err = numProcs(ctx)
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
ret.HostID, err = HostIDWithContext(ctx)
if err != nil && !errors.Is(err, common.ErrNotImplementedError) {
return nil, err
}
return ret, nil
}
// BootTime returns the system boot time expressed in seconds since the epoch.
func BootTime() (uint64, error) {
return BootTimeWithContext(context.Background())
}
func Uptime() (uint64, error) {
return UptimeWithContext(context.Background())
}
func Users() ([]UserStat, error) {
return UsersWithContext(context.Background())
}
func PlatformInformation() (string, string, string, error) {
return PlatformInformationWithContext(context.Background())
}
// HostID returns the unique host ID provided by the OS.
func HostID() (string, error) {
return HostIDWithContext(context.Background())
}
func Virtualization() (string, string, error) {
return VirtualizationWithContext(context.Background())
}
func KernelVersion() (string, error) {
return KernelVersionWithContext(context.Background())
}
func timeSince(ts uint64) uint64 {
return uint64(time.Now().Unix()) - ts
}
func timeSinceMillis(ts uint64) uint64 {
return uint64(time.Now().UnixMilli()) - ts
}
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