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package generators
import (
"fmt"
"os"
"path/filepath"
"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 hostname struct {
common
}
// RunLXC creates a hostname template.
func (g *hostname) RunLXC(img *image.LXCImage, target shared.DefinitionTargetLXC) error {
// Skip if the file doesn't exist
if !incus.PathExists(filepath.Join(g.sourceDir, g.defFile.Path)) {
return nil
}
// Create new hostname file
file, err := os.Create(filepath.Join(g.sourceDir, g.defFile.Path))
if err != nil {
return fmt.Errorf("Failed to create file %q: %w", filepath.Join(g.sourceDir, g.defFile.Path), err)
}
defer file.Close()
// Write LXC specific string to the hostname file
_, err = file.WriteString("LXC_NAME\n")
if err != nil {
return fmt.Errorf("Failed to write to hostname file: %w", err)
}
// Add hostname path to LXC's templates file
err = img.AddTemplate(g.defFile.Path)
if err != nil {
return fmt.Errorf("Failed to add template: %w", err)
}
return nil
}
// RunIncus creates a hostname template.
func (g *hostname) RunIncus(img *image.IncusImage, target shared.DefinitionTargetIncus) error {
// Skip if the file doesn't exist
if !incus.PathExists(filepath.Join(g.sourceDir, g.defFile.Path)) {
return nil
}
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)
}
file, err := os.Create(filepath.Join(templateDir, "hostname.tpl"))
if err != nil {
return fmt.Errorf("Failed to create file %q: %w", filepath.Join(templateDir, "hostname.tpl"), err)
}
defer file.Close()
_, err = file.WriteString("{{ container.name }}\n")
if err != nil {
return fmt.Errorf("Failed to write to hostname file: %w", err)
}
// Add to Incus templates
img.Metadata.Templates[g.defFile.Path] = &api.ImageMetadataTemplate{
Template: "hostname.tpl",
Properties: g.defFile.Template.Properties,
When: g.defFile.Template.When,
}
if len(g.defFile.Template.When) == 0 {
img.Metadata.Templates[g.defFile.Path].When = []string{
"create",
"copy",
}
}
return nil
}
// Run does nothing.
func (g *hostname) Run() error {
return nil
}
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