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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
package command
import (
"fmt"
"sort"
"strings"
"github.com/mitchellh/packer/template"
)
type InspectCommand struct {
Meta
}
func (c *InspectCommand) Run(args []string) int {
flags := c.Meta.FlagSet("inspect", FlagSetNone)
flags.Usage = func() { c.Ui.Say(c.Help()) }
if err := flags.Parse(args); err != nil {
return 1
}
args = flags.Args()
if len(args) != 1 {
flags.Usage()
return 1
}
// Parse the template
tpl, err := template.ParseFile(args[0])
if err != nil {
c.Ui.Error(fmt.Sprintf("Failed to parse template: %s", err))
return 1
}
// Convenience...
ui := c.Ui
// Description
if tpl.Description != "" {
ui.Say("Description:\n")
ui.Say(tpl.Description + "\n")
}
// Variables
if len(tpl.Variables) == 0 {
ui.Say("Variables:\n")
ui.Say(" <No variables>")
} else {
requiredHeader := false
for k, v := range tpl.Variables {
if v.Required {
if !requiredHeader {
requiredHeader = true
ui.Say("Required variables:\n")
}
ui.Machine("template-variable", k, v.Default, "1")
ui.Say(" " + k)
}
}
if requiredHeader {
ui.Say("")
}
ui.Say("Optional variables and their defaults:\n")
keys := make([]string, 0, len(tpl.Variables))
max := 0
for k, _ := range tpl.Variables {
keys = append(keys, k)
if len(k) > max {
max = len(k)
}
}
sort.Strings(keys)
for _, k := range keys {
v := tpl.Variables[k]
if v.Required {
continue
}
padding := strings.Repeat(" ", max-len(k))
output := fmt.Sprintf(" %s%s = %s", k, padding, v.Default)
ui.Machine("template-variable", k, v.Default, "0")
ui.Say(output)
}
}
ui.Say("")
// Builders
ui.Say("Builders:\n")
if len(tpl.Builders) == 0 {
ui.Say(" <No builders>")
} else {
keys := make([]string, 0, len(tpl.Builders))
max := 0
for k, _ := range tpl.Builders {
keys = append(keys, k)
if len(k) > max {
max = len(k)
}
}
sort.Strings(keys)
for _, k := range keys {
v := tpl.Builders[k]
padding := strings.Repeat(" ", max-len(k))
output := fmt.Sprintf(" %s%s", k, padding)
if v.Name != v.Type {
output = fmt.Sprintf("%s (%s)", output, v.Type)
}
ui.Machine("template-builder", k, v.Type)
ui.Say(output)
}
}
ui.Say("")
// Provisioners
ui.Say("Provisioners:\n")
if len(tpl.Provisioners) == 0 {
ui.Say(" <No provisioners>")
} else {
for _, v := range tpl.Provisioners {
ui.Machine("template-provisioner", v.Type)
ui.Say(fmt.Sprintf(" %s", v.Type))
}
}
ui.Say("\nNote: If your build names contain user variables or template\n" +
"functions such as 'timestamp', these are processed at build time,\n" +
"and therefore only show in their raw form here.")
return 0
}
func (*InspectCommand) Help() string {
helpText := `
Usage: packer inspect TEMPLATE
Inspects a template, parsing and outputting the components a template
defines. This does not validate the contents of a template (other than
basic syntax by necessity).
Options:
-machine-readable Machine-readable output
`
return strings.TrimSpace(helpText)
}
func (c *InspectCommand) Synopsis() string {
return "see components of a template"
}
|
