107 lines
2.3 KiB
Go
107 lines
2.3 KiB
Go
/*
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Copyright (c) 2015 VMware, Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package flags
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import (
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"context"
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"flag"
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"fmt"
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"os"
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"github.com/vmware/govmomi/object"
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)
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type VirtualAppFlag struct {
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common
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*DatacenterFlag
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*SearchFlag
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name string
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app *object.VirtualApp
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}
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var virtualAppFlagKey = flagKey("virtualApp")
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func NewVirtualAppFlag(ctx context.Context) (*VirtualAppFlag, context.Context) {
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if v := ctx.Value(virtualAppFlagKey); v != nil {
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return v.(*VirtualAppFlag), ctx
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}
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v := &VirtualAppFlag{}
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v.DatacenterFlag, ctx = NewDatacenterFlag(ctx)
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v.SearchFlag, ctx = NewSearchFlag(ctx, SearchVirtualApps)
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ctx = context.WithValue(ctx, virtualAppFlagKey, v)
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return v, ctx
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}
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func (flag *VirtualAppFlag) Register(ctx context.Context, f *flag.FlagSet) {
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flag.RegisterOnce(func() {
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flag.DatacenterFlag.Register(ctx, f)
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flag.SearchFlag.Register(ctx, f)
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env := "GOVC_VAPP"
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value := os.Getenv(env)
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usage := fmt.Sprintf("Virtual App [%s]", env)
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f.StringVar(&flag.name, "vapp", value, usage)
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})
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}
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func (flag *VirtualAppFlag) Process(ctx context.Context) error {
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return flag.ProcessOnce(func() error {
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if err := flag.DatacenterFlag.Process(ctx); err != nil {
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return err
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}
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if err := flag.SearchFlag.Process(ctx); err != nil {
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return err
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}
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return nil
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})
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}
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func (flag *VirtualAppFlag) VirtualApp() (*object.VirtualApp, error) {
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ctx := context.TODO()
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if flag.app != nil {
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return flag.app, nil
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}
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// Use search flags if specified.
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if flag.SearchFlag.IsSet() {
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app, err := flag.SearchFlag.VirtualApp()
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if err != nil {
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return nil, err
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}
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flag.app = app
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return flag.app, nil
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}
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// Never look for a default virtual app.
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if flag.name == "" {
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return nil, nil
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}
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finder, err := flag.Finder()
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if err != nil {
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return nil, err
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}
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flag.app, err = finder.VirtualApp(ctx, flag.name)
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return flag.app, err
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}
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