1/* 2Copyright (c) 2014-2016 VMware, Inc. All Rights Reserved. 3 4Licensed under the Apache License, Version 2.0 (the "License"); 5you may not use this file except in compliance with the License. 6You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10Unless required by applicable law or agreed to in writing, software 11distributed under the License is distributed on an "AS IS" BASIS, 12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13See the License for the specific language governing permissions and 14limitations under the License. 15*/ 16 17package flags 18 19import ( 20 "context" 21 "flag" 22 "fmt" 23 "os" 24 25 "github.com/vmware/govmomi/object" 26) 27 28type ResourcePoolFlag struct { 29 common 30 31 *DatacenterFlag 32 33 name string 34 pool *object.ResourcePool 35} 36 37var resourcePoolFlagKey = flagKey("resourcePool") 38 39func NewResourcePoolFlag(ctx context.Context) (*ResourcePoolFlag, context.Context) { 40 if v := ctx.Value(resourcePoolFlagKey); v != nil { 41 return v.(*ResourcePoolFlag), ctx 42 } 43 44 v := &ResourcePoolFlag{} 45 v.DatacenterFlag, ctx = NewDatacenterFlag(ctx) 46 ctx = context.WithValue(ctx, resourcePoolFlagKey, v) 47 return v, ctx 48} 49 50func (flag *ResourcePoolFlag) Register(ctx context.Context, f *flag.FlagSet) { 51 flag.RegisterOnce(func() { 52 flag.DatacenterFlag.Register(ctx, f) 53 54 env := "GOVC_RESOURCE_POOL" 55 value := os.Getenv(env) 56 usage := fmt.Sprintf("Resource pool [%s]", env) 57 f.StringVar(&flag.name, "pool", value, usage) 58 }) 59} 60 61func (flag *ResourcePoolFlag) Process(ctx context.Context) error { 62 return flag.ProcessOnce(func() error { 63 if err := flag.DatacenterFlag.Process(ctx); err != nil { 64 return err 65 } 66 return nil 67 }) 68} 69 70func (flag *ResourcePoolFlag) ResourcePool() (*object.ResourcePool, error) { 71 if flag.pool != nil { 72 return flag.pool, nil 73 } 74 75 finder, err := flag.Finder() 76 if err != nil { 77 return nil, err 78 } 79 80 if flag.pool, err = finder.ResourcePoolOrDefault(context.TODO(), flag.name); err != nil { 81 return nil, err 82 } 83 84 return flag.pool, nil 85} 86 87func (flag *ResourcePoolFlag) ResourcePoolIfSpecified() (*object.ResourcePool, error) { 88 if flag.name == "" { 89 return nil, nil 90 } 91 return flag.ResourcePool() 92} 93