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|
package generators
import (
"fmt"
"os"
"path/filepath"
"slices"
"strings"
"github.com/lxc/incus/v6/shared/api"
incus "github.com/lxc/incus/v6/shared/util"
"github.com/lxc/distrobuilder/image"
"github.com/lxc/distrobuilder/shared"
)
type cloudInit struct {
common
}
// RunLXC disables cloud-init.
func (g *cloudInit) RunLXC(img *image.LXCImage, target shared.DefinitionTargetLXC) error {
// With OpenRC:
// Remove all symlinks to /etc/init.d/cloud-{init-local,config,init,final} in /etc/runlevels/*
fullPath := filepath.Join(g.sourceDir, "etc", "runlevels")
if incus.PathExists(fullPath) {
err := filepath.Walk(fullPath, func(path string, info os.FileInfo, err error) error {
if info.IsDir() {
return nil
}
if slices.Contains([]string{"cloud-init-local", "cloud-config", "cloud-init", "cloud-final"}, info.Name()) {
err := os.Remove(path)
if err != nil {
return fmt.Errorf("Failed to remove file %q: %w", path, err)
}
}
return nil
})
if err != nil {
return fmt.Errorf("Failed to walk file tree %q: %w", fullPath, err)
}
}
// With systemd:
path := filepath.Join(g.sourceDir, "/etc/cloud")
if !incus.PathExists(path) {
err := os.MkdirAll(path, 0o755)
if err != nil {
return fmt.Errorf("Failed to create directory %q: %w", path, err)
}
}
// Create file /etc/cloud/cloud-init.disabled
path = filepath.Join(g.sourceDir, "/etc/cloud/cloud-init.disabled")
f, err := os.Create(path)
if err != nil {
return fmt.Errorf("Failed to create file %q: %w", path, err)
}
defer f.Close()
return nil
}
// RunIncus creates cloud-init template files.
func (g *cloudInit) RunIncus(img *image.IncusImage, target shared.DefinitionTargetIncus) error {
templateDir := filepath.Join(g.cacheDir, "templates")
err := os.MkdirAll(templateDir, 0o755)
if err != nil {
return fmt.Errorf("Failed to create directory %q: %w", templateDir, err)
}
var content string
properties := make(map[string]string)
switch g.defFile.Name {
case "user-data":
content = `{%- if config_get("cloud-init.user-data", properties.default) == properties.default -%}
{{ config_get("user.user-data", properties.default) }}
{%- else -%}
{{- config_get("cloud-init.user-data", properties.default) }}
{%- endif %}
`
properties["default"] = `#cloud-config
{}`
case "meta-data":
content = `instance-id: {{ container.name }}
local-hostname: {{ container.name }}
{{ config_get("user.meta-data", "") }}
`
case "vendor-data":
content = `{%- if config_get("cloud-init.vendor-data", properties.default) == properties.default -%}
{{ config_get("user.vendor-data", properties.default) }}
{%- else -%}
{{- config_get("cloud-init.vendor-data", properties.default) }}
{%- endif %}
`
properties["default"] = `#cloud-config
{}`
case "network-config":
defaultValue := `version: 1
config:
- type: physical
name: {% if instance.type == "virtual-machine" %}enp5s0{% else %}eth0{% endif %}
subnets:
- type: dhcp
control: auto`
// Use the provided content as the new default value
if g.defFile.Content != "" {
defaultValue = g.defFile.Content
}
content = fmt.Sprintf(`{%%- if config_get("cloud-init.network-config", "") == "" -%%}
{%%- if config_get("user.network-config", "") == "" -%%}
%s
{%%- else -%%}
{{- config_get("user.network-config", "") -}}
{%%- endif -%%}
{%%- else -%%}
{{- config_get("cloud-init.network-config", "") -}}
{%%- endif %%}
`, defaultValue)
default:
return fmt.Errorf("Unknown cloud-init configuration: %s", g.defFile.Name)
}
template := fmt.Sprintf("cloud-init-%s.tpl", g.defFile.Name)
path := filepath.Join(templateDir, template)
file, err := os.Create(path)
if err != nil {
return fmt.Errorf("Failed to create file %q: %w", path, err)
}
defer file.Close()
// Use the provided content as the new default value
if g.defFile.Name != "network-config" && g.defFile.Content != "" {
properties["default"] = g.defFile.Content
}
// Append final new line if missing
if !strings.HasSuffix(content, "\n") {
content += "\n"
}
_, err = file.WriteString(content)
if err != nil {
return fmt.Errorf("Failed to write to content to %s template: %w", g.defFile.Name, err)
}
if len(g.defFile.Template.Properties) > 0 {
properties = g.defFile.Template.Properties
}
targetPath := filepath.Join("/var/lib/cloud/seed/nocloud-net", g.defFile.Name)
if g.defFile.Path != "" {
targetPath = g.defFile.Path
}
// Add to Incus templates
img.Metadata.Templates[targetPath] = &api.ImageMetadataTemplate{
Template: template,
Properties: properties,
When: []string{"create", "copy"},
}
return nil
}
// Run does nothing.
func (g *cloudInit) Run() error {
return nil
}
|
