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/*
Copyright (c) 2014-2016 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 flags
import (
"context"
"flag"
"fmt"
"os"
"github.com/vmware/govmomi/object"
)
type FolderFlag struct {
common
*DatacenterFlag
name string
folder *object.Folder
}
var folderFlagKey = flagKey("folder")
func NewFolderFlag(ctx context.Context) (*FolderFlag, context.Context) {
if v := ctx.Value(folderFlagKey); v != nil {
return v.(*FolderFlag), ctx
}
v := &FolderFlag{}
v.DatacenterFlag, ctx = NewDatacenterFlag(ctx)
ctx = context.WithValue(ctx, folderFlagKey, v)
return v, ctx
}
func (flag *FolderFlag) Register(ctx context.Context, f *flag.FlagSet) {
flag.RegisterOnce(func() {
flag.DatacenterFlag.Register(ctx, f)
env := "GOVC_FOLDER"
value := os.Getenv(env)
usage := fmt.Sprintf("Inventory folder [%s]", env)
f.StringVar(&flag.name, "folder", value, usage)
})
}
func (flag *FolderFlag) Process(ctx context.Context) error {
return flag.ProcessOnce(func() error {
if err := flag.DatacenterFlag.Process(ctx); err != nil {
return err
}
return nil
})
}
func (flag *FolderFlag) IsSet() bool {
return flag.name != ""
}
func (flag *FolderFlag) Folder() (*object.Folder, error) {
if flag.folder != nil {
return flag.folder, nil
}
finder, err := flag.Finder()
if err != nil {
return nil, err
}
if flag.folder, err = finder.FolderOrDefault(context.TODO(), flag.name); err != nil {
return nil, err
}
return flag.folder, nil
}
func (flag *FolderFlag) FolderIfSpecified() (*object.Folder, error) {
if flag.name == "" {
return nil, nil
}
return flag.Folder()
}
func (flag *FolderFlag) FolderOrDefault(kind string) (*object.Folder, error) {
if flag.folder != nil {
return flag.folder, nil
}
if flag.name != "" {
return flag.Folder()
}
// RootFolder, no dc required
if kind == "/" {
client, err := flag.Client()
if err != nil {
return nil, err
}
flag.folder = object.NewRootFolder(client)
return flag.folder, nil
}
dc, err := flag.Datacenter()
if err != nil {
return nil, err
}
folders, err := dc.Folders(context.TODO())
if err != nil {
return nil, err
}
switch kind {
case "vm":
flag.folder = folders.VmFolder
case "host":
flag.folder = folders.HostFolder
case "datastore":
flag.folder = folders.DatastoreFolder
case "network":
flag.folder = folders.NetworkFolder
default:
panic(kind)
}
return flag.folder, nil
}
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