155 lines
3.3 KiB
Go
155 lines
3.3 KiB
Go
/*
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Copyright (c) 2014-2015 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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"flag"
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"fmt"
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"os"
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"github.com/vmware/govmomi/find"
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"github.com/vmware/govmomi/object"
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"github.com/vmware/govmomi/vim25/types"
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"golang.org/x/net/context"
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)
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type DatacenterFlag struct {
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common
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*ClientFlag
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*OutputFlag
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path string
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dc *object.Datacenter
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finder *find.Finder
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err error
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}
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var datacenterFlagKey = flagKey("datacenter")
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func NewDatacenterFlag(ctx context.Context) (*DatacenterFlag, context.Context) {
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if v := ctx.Value(datacenterFlagKey); v != nil {
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return v.(*DatacenterFlag), ctx
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}
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v := &DatacenterFlag{}
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v.ClientFlag, ctx = NewClientFlag(ctx)
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v.OutputFlag, ctx = NewOutputFlag(ctx)
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ctx = context.WithValue(ctx, datacenterFlagKey, v)
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return v, ctx
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}
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func (flag *DatacenterFlag) Register(ctx context.Context, f *flag.FlagSet) {
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flag.RegisterOnce(func() {
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flag.ClientFlag.Register(ctx, f)
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flag.OutputFlag.Register(ctx, f)
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env := "GOVC_DATACENTER"
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value := os.Getenv(env)
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usage := fmt.Sprintf("Datacenter [%s]", env)
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f.StringVar(&flag.path, "dc", value, usage)
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})
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}
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func (flag *DatacenterFlag) Process(ctx context.Context) error {
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return flag.ProcessOnce(func() error {
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if err := flag.ClientFlag.Process(ctx); err != nil {
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return err
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}
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if err := flag.OutputFlag.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 *DatacenterFlag) Finder() (*find.Finder, error) {
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if flag.finder != nil {
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return flag.finder, nil
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}
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c, err := flag.Client()
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if err != nil {
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return nil, err
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}
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finder := find.NewFinder(c, flag.JSON)
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// Datacenter is not required (ls command for example).
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// Set for relative func if dc flag is given or
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// if there is a single (default) Datacenter
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if flag.dc, err = finder.DatacenterOrDefault(context.TODO(), flag.path); err != nil {
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return nil, err
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}
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finder.SetDatacenter(flag.dc)
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flag.finder = finder
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return flag.finder, nil
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}
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func (flag *DatacenterFlag) Datacenter() (*object.Datacenter, error) {
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if flag.dc != nil {
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return flag.dc, nil
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}
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_, 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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if flag.err != nil {
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// Should only happen if no dc is specified and len(dcs) > 1
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return nil, flag.err
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}
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return flag.dc, err
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}
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func (flag *DatacenterFlag) ManagedObjects(ctx context.Context, args []string) ([]types.ManagedObjectReference, error) {
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var refs []types.ManagedObjectReference
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c, err := flag.Client()
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if err != nil {
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return nil, err
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}
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if len(args) == 0 {
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refs = append(refs, c.ServiceContent.RootFolder)
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return refs, 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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for _, arg := range args {
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elements, err := finder.ManagedObjectList(ctx, arg)
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if err != nil {
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return nil, err
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}
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for _, e := range elements {
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refs = append(refs, e.Object.Reference())
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}
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}
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return refs, nil
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}
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