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|
package generators
import (
"fmt"
"os"
"path/filepath"
"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 hosts struct {
common
}
// RunLXC creates a LXC specific entry in the hosts file.
func (g *hosts) 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
}
// Read the current content
content, err := os.ReadFile(filepath.Join(g.sourceDir, g.defFile.Path))
if err != nil {
return fmt.Errorf("Failed to read file %q: %w", filepath.Join(g.sourceDir, g.defFile.Path), err)
}
// Replace hostname with placeholder
content = []byte(strings.ReplaceAll(string(content), "distrobuilder", "LXC_NAME"))
// Add a new line if needed
if !strings.Contains(string(content), "LXC_NAME") {
content = append([]byte("127.0.1.1\tLXC_NAME\n"), content...)
}
f, 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 f.Close()
// Overwrite the file
_, err = f.Write(content)
if err != nil {
return fmt.Errorf("Failed to write to file %q: %w", filepath.Join(g.sourceDir, g.defFile.Path), 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 hosts template.
func (g *hosts) 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")
// Create templates path
err := os.MkdirAll(templateDir, 0o755)
if err != nil {
return fmt.Errorf("Failed to create directory %q: %w", templateDir, err)
}
// Read the current content
content, err := os.ReadFile(filepath.Join(g.sourceDir, g.defFile.Path))
if err != nil {
return fmt.Errorf("Failed to read file %q: %w", filepath.Join(g.sourceDir, g.defFile.Path), err)
}
// Replace hostname with placeholder
content = []byte(strings.ReplaceAll(string(content), "distrobuilder", "{{ container.name }}"))
// Add a new line if needed
if !strings.Contains(string(content), "{{ container.name }}") {
content = append([]byte("127.0.1.1\t{{ container.name }}\n"), content...)
}
// Write the template
err = os.WriteFile(filepath.Join(templateDir, "hosts.tpl"), content, 0o644)
if err != nil {
return fmt.Errorf("Failed to write file %q: %w", filepath.Join(templateDir, "hosts.tpl"), err)
}
img.Metadata.Templates[g.defFile.Path] = &api.ImageMetadataTemplate{
Template: "hosts.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 *hosts) Run() error {
return nil
}
|
