mirror of https://github.com/status-im/consul.git
138 lines
3.5 KiB
Go
138 lines
3.5 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 mo
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import (
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"context"
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"fmt"
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"github.com/vmware/govmomi/vim25/soap"
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"github.com/vmware/govmomi/vim25/types"
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)
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// Ancestors returns the entire ancestry tree of a specified managed object.
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// The return value includes the root node and the specified object itself.
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func Ancestors(ctx context.Context, rt soap.RoundTripper, pc, obj types.ManagedObjectReference) ([]ManagedEntity, error) {
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ospec := types.ObjectSpec{
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Obj: obj,
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SelectSet: []types.BaseSelectionSpec{
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&types.TraversalSpec{
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SelectionSpec: types.SelectionSpec{Name: "traverseParent"},
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Type: "ManagedEntity",
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Path: "parent",
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Skip: types.NewBool(false),
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SelectSet: []types.BaseSelectionSpec{
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&types.SelectionSpec{Name: "traverseParent"},
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},
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},
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&types.TraversalSpec{
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SelectionSpec: types.SelectionSpec{},
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Type: "VirtualMachine",
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Path: "parentVApp",
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Skip: types.NewBool(false),
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SelectSet: []types.BaseSelectionSpec{
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&types.SelectionSpec{Name: "traverseParent"},
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},
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},
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},
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Skip: types.NewBool(false),
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}
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pspec := []types.PropertySpec{
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{
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Type: "ManagedEntity",
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PathSet: []string{"name", "parent"},
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},
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{
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Type: "VirtualMachine",
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PathSet: []string{"parentVApp"},
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},
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}
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req := types.RetrieveProperties{
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This: pc,
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SpecSet: []types.PropertyFilterSpec{
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{
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ObjectSet: []types.ObjectSpec{ospec},
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PropSet: pspec,
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},
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},
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}
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var ifaces []interface{}
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err := RetrievePropertiesForRequest(ctx, rt, req, &ifaces)
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if err != nil {
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return nil, err
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}
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var out []ManagedEntity
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// Build ancestry tree by iteratively finding a new child.
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for len(out) < len(ifaces) {
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var find types.ManagedObjectReference
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if len(out) > 0 {
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find = out[len(out)-1].Self
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}
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// Find entity we're looking for given the last entity in the current tree.
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for _, iface := range ifaces {
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me := iface.(IsManagedEntity).GetManagedEntity()
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if me.Name == "" {
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// The types below have their own 'Name' field, so ManagedEntity.Name (me.Name) is empty.
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// We only hit this case when the 'obj' param is one of these types.
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// In most cases, 'obj' is a Folder so Name isn't collected in this call.
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switch x := iface.(type) {
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case Network:
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me.Name = x.Name
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case DistributedVirtualSwitch:
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me.Name = x.Name
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case DistributedVirtualPortgroup:
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me.Name = x.Name
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case OpaqueNetwork:
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me.Name = x.Name
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default:
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// ManagedEntity always has a Name, if we hit this point we missed a case above.
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panic(fmt.Sprintf("%#v Name is empty", me.Reference()))
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}
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}
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if me.Parent == nil {
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// Special case for VirtualMachine within VirtualApp,
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// unlikely to hit this other than via Finder.Element()
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switch x := iface.(type) {
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case VirtualMachine:
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me.Parent = x.ParentVApp
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}
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}
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if me.Parent == nil {
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out = append(out, me)
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break
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}
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if *me.Parent == find {
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out = append(out, me)
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break
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}
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}
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}
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return out, nil
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}
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