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/*
Copyright (c) 2014-2017 VMware, Inc. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package guest
import (
"context"
"flag"
"fmt"
"io"
"strconv"
"strings"
"text/tabwriter"
"time"
"github.com/vmware/govmomi/govc/cli"
"github.com/vmware/govmomi/govc/flags"
"github.com/vmware/govmomi/vim25/types"
)
type ps struct {
*flags.OutputFlag
*GuestFlag
every bool
exit bool
wait bool
pids pidSelector
uids uidSelector
}
type pidSelector []int64
func (s *pidSelector) String() string {
return fmt.Sprint(*s)
}
func (s *pidSelector) Set(value string) error {
v, err := strconv.ParseInt(value, 0, 64)
if err != nil {
return err
}
*s = append(*s, v)
return nil
}
type uidSelector map[string]bool
func (s uidSelector) String() string {
return ""
}
func (s uidSelector) Set(value string) error {
s[value] = true
return nil
}
func init() {
cli.Register("guest.ps", &ps{})
}
func (cmd *ps) Register(ctx context.Context, f *flag.FlagSet) {
cmd.OutputFlag, ctx = flags.NewOutputFlag(ctx)
cmd.OutputFlag.Register(ctx, f)
cmd.GuestFlag, ctx = newGuestProcessFlag(ctx)
cmd.GuestFlag.Register(ctx, f)
cmd.uids = make(map[string]bool)
f.BoolVar(&cmd.every, "e", false, "Select all processes")
f.BoolVar(&cmd.exit, "x", false, "Output exit time and code")
f.BoolVar(&cmd.wait, "X", false, "Wait for process to exit")
f.Var(&cmd.pids, "p", "Select by process ID")
f.Var(&cmd.uids, "U", "Select by process UID")
}
func (cmd *ps) Process(ctx context.Context) error {
if err := cmd.OutputFlag.Process(ctx); err != nil {
return err
}
if err := cmd.GuestFlag.Process(ctx); err != nil {
return err
}
return nil
}
func (cmd *ps) Description() string {
return `List processes in VM.
By default, unless the '-e', '-p' or '-U' flag is specified, only processes owned
by the '-l' flag user are displayed.
The '-x' and '-X' flags only apply to processes started by vmware-tools,
such as those started with the govc guest.start command.
Examples:
govc guest.ps -vm $name
govc guest.ps -vm $name -e
govc guest.ps -vm $name -p 12345
govc guest.ps -vm $name -U root`
}
func running(procs []types.GuestProcessInfo) bool {
for _, p := range procs {
if p.EndTime == nil {
return true
}
}
return false
}
func (cmd *ps) list(ctx context.Context) ([]types.GuestProcessInfo, error) {
m, err := cmd.ProcessManager()
if err != nil {
return nil, err
}
auth := cmd.Auth()
for {
procs, err := m.ListProcesses(ctx, auth, cmd.pids)
if err != nil {
return nil, err
}
if cmd.wait && running(procs) {
<-time.After(time.Second)
continue
}
return procs, nil
}
}
func (cmd *ps) Run(ctx context.Context, f *flag.FlagSet) error {
procs, err := cmd.list(ctx)
if err != nil {
return err
}
r := &psResult{cmd, procs}
return cmd.WriteResult(r)
}
type psResult struct {
cmd *ps
ProcessInfo []types.GuestProcessInfo
}
func (r *psResult) Write(w io.Writer) error {
tw := tabwriter.NewWriter(w, 2, 0, 2, ' ', 0)
fmt.Fprintf(tw, "%s\t%s\t%s", "UID", "PID", "STIME")
if r.cmd.exit {
fmt.Fprintf(tw, "\t%s\t%s", "XTIME", "XCODE")
}
fmt.Fprint(tw, "\tCMD\n")
if len(r.cmd.pids) != 0 {
r.cmd.every = true
}
if !r.cmd.every && len(r.cmd.uids) == 0 {
r.cmd.uids[r.cmd.auth.Username] = true
}
for _, p := range r.ProcessInfo {
if r.cmd.every || r.cmd.uids[p.Owner] {
fmt.Fprintf(tw, "%s\t%d\t%s", p.Owner, p.Pid, p.StartTime.Format("15:04"))
if r.cmd.exit {
etime := "-"
ecode := "-"
if p.EndTime != nil {
etime = p.EndTime.Format("15:04")
ecode = strconv.Itoa(int(p.ExitCode))
}
fmt.Fprintf(tw, "\t%s\t%s", etime, ecode)
}
fmt.Fprintf(tw, "\t%s\n", strings.TrimSpace(p.CmdLine))
}
}
return tw.Flush()
}
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