-
Notifications
You must be signed in to change notification settings - Fork 896
/
ancestors.go
137 lines (118 loc) · 3.54 KB
/
ancestors.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
/*
Copyright (c) 2015 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 mo
import (
"context"
"fmt"
"github.com/vmware/govmomi/vim25/soap"
"github.com/vmware/govmomi/vim25/types"
)
// Ancestors returns the entire ancestry tree of a specified managed object.
// The return value includes the root node and the specified object itself.
func Ancestors(ctx context.Context, rt soap.RoundTripper, pc, obj types.ManagedObjectReference) ([]ManagedEntity, error) {
ospec := types.ObjectSpec{
Obj: obj,
SelectSet: []types.BaseSelectionSpec{
&types.TraversalSpec{
SelectionSpec: types.SelectionSpec{Name: "traverseParent"},
Type: "ManagedEntity",
Path: "parent",
Skip: types.NewBool(false),
SelectSet: []types.BaseSelectionSpec{
&types.SelectionSpec{Name: "traverseParent"},
},
},
&types.TraversalSpec{
SelectionSpec: types.SelectionSpec{},
Type: "VirtualMachine",
Path: "parentVApp",
Skip: types.NewBool(false),
SelectSet: []types.BaseSelectionSpec{
&types.SelectionSpec{Name: "traverseParent"},
},
},
},
Skip: types.NewBool(false),
}
pspec := []types.PropertySpec{
{
Type: "ManagedEntity",
PathSet: []string{"name", "parent"},
},
{
Type: "VirtualMachine",
PathSet: []string{"parentVApp"},
},
}
req := types.RetrieveProperties{
This: pc,
SpecSet: []types.PropertyFilterSpec{
{
ObjectSet: []types.ObjectSpec{ospec},
PropSet: pspec,
},
},
}
var ifaces []interface{}
err := RetrievePropertiesForRequest(ctx, rt, req, &ifaces)
if err != nil {
return nil, err
}
var out []ManagedEntity
// Build ancestry tree by iteratively finding a new child.
for len(out) < len(ifaces) {
var find types.ManagedObjectReference
if len(out) > 0 {
find = out[len(out)-1].Self
}
// Find entity we're looking for given the last entity in the current tree.
for _, iface := range ifaces {
me := iface.(IsManagedEntity).GetManagedEntity()
if me.Name == "" {
// The types below have their own 'Name' field, so ManagedEntity.Name (me.Name) is empty.
// We only hit this case when the 'obj' param is one of these types.
// In most cases, 'obj' is a Folder so Name isn't collected in this call.
switch x := iface.(type) {
case Network:
me.Name = x.Name
case DistributedVirtualSwitch:
me.Name = x.Name
case DistributedVirtualPortgroup:
me.Name = x.Name
case OpaqueNetwork:
me.Name = x.Name
default:
// ManagedEntity always has a Name, if we hit this point we missed a case above.
panic(fmt.Sprintf("%#v Name is empty", me.Reference()))
}
}
if me.Parent == nil {
// Special case for VirtualMachine within VirtualApp,
// unlikely to hit this other than via Finder.Element()
switch x := iface.(type) {
case VirtualMachine:
me.Parent = x.ParentVApp
}
}
if me.Parent == nil {
out = append(out, me)
break
}
if *me.Parent == find {
out = append(out, me)
break
}
}
}
return out, nil
}