blob: 49ff5a8cc04cf0e27cff67c7a7a951b2a037cf67 (
plain)
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
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
Package 'recipe' implements actions mapping to YAML recipe.
Recipe syntax
Recipe is a YAML file which is pre-processed though Golang
text templating engine (https://golang.org/pkg/text/template)
Recipe is composed of 2 parts:
- header
- actions
Comments are allowed and should be prefixed with '#' symbol.
# Declare variable 'Var'
{{- $Var := "Value" -}}
# Header
architecture: arm64
# Actions are executed in listed order
actions:
- action: ActionName1
property1: true
- action: ActionName2
# Use value of variable 'Var' defined above
property2: {{$Var}}
Mandatory properties for receipt:
- architecture -- target architecture
- actions -- at least one action should be listed
Supported actions
- apt -- https://godoc.org/github.com/go-debos/debos/actions#hdr-Apt_Action
- debootstrap -- https://godoc.org/github.com/go-debos/debos/actions#hdr-Debootstrap_Action
- download -- https://godoc.org/github.com/go-debos/debos/actions#hdr-Download_Action
- filesystem-deploy -- https://godoc.org/github.com/go-debos/debos/actions#hdr-FilesystemDeploy_Action
- image-partition -- https://godoc.org/github.com/go-debos/debos/actions#hdr-ImagePartition_Action
- ostree-commit -- https://godoc.org/github.com/go-debos/debos/actions#hdr-OstreeCommit_Action
- ostree-deploy -- https://godoc.org/github.com/go-debos/debos/actions#hdr-OstreeDeploy_Action
- overlay -- https://godoc.org/github.com/go-debos/debos/actions#hdr-Overlay_Action
- pack -- https://godoc.org/github.com/go-debos/debos/actions#hdr-Pack_Action
- raw -- https://godoc.org/github.com/go-debos/debos/actions#hdr-Raw_Action
- run -- https://godoc.org/github.com/go-debos/debos/actions#hdr-Run_Action
- unpack -- https://godoc.org/github.com/go-debos/debos/actions#hdr-Unpack_Action
*/
package recipe
import (
"bytes"
"fmt"
"github.com/go-debos/debos"
"github.com/go-debos/debos/actions"
"gopkg.in/yaml.v2"
"path"
"text/template"
)
/* the YamlAction just embed the Action interface and implements the
* UnmarshalYAML function so it can select the concrete implementer of a
* specific action at unmarshaling time */
type YamlAction struct {
debos.Action
}
type Recipe struct {
Architecture string
Actions []YamlAction
}
func (y *YamlAction) UnmarshalYAML(unmarshal func(interface{}) error) error {
var aux debos.BaseAction
err := unmarshal(&aux)
if err != nil {
return err
}
switch aux.Action {
case "debootstrap":
y.Action = actions.NewDebootstrapAction()
case "pack":
y.Action = &actions.PackAction{}
case "unpack":
y.Action = &actions.UnpackAction{}
case "run":
y.Action = &actions.RunAction{}
case "apt":
y.Action = &actions.AptAction{}
case "ostree-commit":
y.Action = &actions.OstreeCommitAction{}
case "ostree-deploy":
y.Action = actions.NewOstreeDeployAction()
case "overlay":
y.Action = &actions.OverlayAction{}
case "image-partition":
y.Action = &actions.ImagePartitionAction{}
case "filesystem-deploy":
y.Action = actions.NewFilesystemDeployAction()
case "raw":
y.Action = &actions.RawAction{}
case "download":
y.Action = &actions.DownloadAction{}
default:
return fmt.Errorf("Unknown action: %v", aux.Action)
}
unmarshal(y.Action)
return nil
}
func sector(s int) int {
return s * 512
}
/*
Parse method reads YAML recipe file and map all steps to appropriate actions.
- file -- is the path to configuration file
- templateVars -- optional argument allowing to use custom map for templating
engine. Multiple template maps have no effect; only first map will be used.
*/
func (r *Recipe) Parse(file string, templateVars ...map[string]string) error {
t := template.New(path.Base(file))
funcs := template.FuncMap{
"sector": sector,
}
t.Funcs(funcs)
if _, err := t.ParseFiles(file); err != nil {
return err
}
if len(templateVars) == 0 {
templateVars = append(templateVars, make(map[string]string))
}
data := new(bytes.Buffer)
if err := t.Execute(data, templateVars[0]); err != nil {
return err
}
if err := yaml.Unmarshal(data.Bytes(), &r); err != nil {
return err
}
if len(r.Architecture) == 0 {
return fmt.Errorf("Recipe file must have 'architecture' property")
}
if len(r.Actions) == 0 {
return fmt.Errorf("Recipe file must have at least one action")
}
return nil
}
|
