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/*
Copyright (c) 2016 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 snapshot
import (
"context"
"flag"
"fmt"
"path"
"strings"
"github.com/vmware/govmomi/govc/cli"
"github.com/vmware/govmomi/govc/flags"
"github.com/vmware/govmomi/vim25/mo"
"github.com/vmware/govmomi/vim25/types"
)
type tree struct {
*flags.VirtualMachineFlag
current bool
currentName bool
date bool
description bool
fullPath bool
id bool
info *types.VirtualMachineSnapshotInfo
}
func init() {
cli.Register("snapshot.tree", &tree{})
}
func (cmd *tree) Register(ctx context.Context, f *flag.FlagSet) {
cmd.VirtualMachineFlag, ctx = flags.NewVirtualMachineFlag(ctx)
cmd.VirtualMachineFlag.Register(ctx, f)
f.BoolVar(&cmd.current, "c", true, "Print the current snapshot")
f.BoolVar(&cmd.currentName, "C", false,
"Print the current snapshot name only")
f.BoolVar(&cmd.date, "D", false, "Print the snapshot creation date")
f.BoolVar(&cmd.description, "d", false,
"Print the snapshot description")
f.BoolVar(&cmd.fullPath, "f", false,
"Print the full path prefix for snapshot")
f.BoolVar(&cmd.id, "i", false, "Print the snapshot id")
}
func (cmd *tree) Description() string {
return `List VM snapshots in a tree-like format.
The command will exit 0 with no output if VM does not have any snapshots.
Examples:
govc snapshot.tree -vm my-vm
govc snapshot.tree -vm my-vm -D -i -d`
}
func (cmd *tree) Process(ctx context.Context) error {
if err := cmd.VirtualMachineFlag.Process(ctx); err != nil {
return err
}
return nil
}
func (cmd *tree) write(level int, parent string, st []types.VirtualMachineSnapshotTree) {
for _, s := range st {
sname := s.Name
if cmd.fullPath && parent != "" {
sname = path.Join(parent, sname)
}
var names []string
if !cmd.currentName {
names = append(names, sname)
}
if s.Snapshot == *cmd.info.CurrentSnapshot {
if cmd.current {
names = append(names, ".")
} else if cmd.currentName {
fmt.Println(sname)
return
}
}
for _, name := range names {
var attr []string
var meta string
if cmd.id {
attr = append(attr, s.Snapshot.Value)
}
if cmd.date {
attr = append(attr, s.CreateTime.Format("Jan 2 15:04"))
}
if len(attr) > 0 {
meta = fmt.Sprintf("[%s] ", strings.Join(attr, " "))
}
if cmd.description {
fmt.Printf("%s%s%s - %4s\n",
strings.Repeat(" ", level), meta, name,
s.Description)
} else {
fmt.Printf("%s%s%s\n",
strings.Repeat(" ", level), meta, name)
}
}
cmd.write(level+2, sname, s.ChildSnapshotList)
}
}
func (cmd *tree) Run(ctx context.Context, f *flag.FlagSet) error {
if f.NArg() != 0 {
return flag.ErrHelp
}
vm, err := cmd.VirtualMachine()
if err != nil {
return err
}
if vm == nil {
return flag.ErrHelp
}
var o mo.VirtualMachine
err = vm.Properties(ctx, vm.Reference(), []string{"snapshot"}, &o)
if err != nil {
return err
}
if o.Snapshot == nil {
return nil
}
if o.Snapshot.CurrentSnapshot == nil || cmd.currentName {
cmd.current = false
}
cmd.info = o.Snapshot
cmd.write(0, "", o.Snapshot.RootSnapshotList)
return nil
}
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