83 lines
1.9 KiB
Go
83 lines
1.9 KiB
Go
package lxc
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"os"
|
|
"os/user"
|
|
"path/filepath"
|
|
|
|
"github.com/hashicorp/packer/helper/multistep"
|
|
"github.com/hashicorp/packer/packer"
|
|
)
|
|
|
|
type stepExport struct{}
|
|
|
|
func (s *stepExport) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
|
|
config := state.Get("config").(*Config)
|
|
ui := state.Get("ui").(packer.Ui)
|
|
|
|
name := config.ContainerName
|
|
|
|
lxc_dir := "/var/lib/lxc"
|
|
user, err := user.Current()
|
|
if err != nil {
|
|
log.Print("Cannot find current user. Falling back to /var/lib/lxc...")
|
|
}
|
|
if user.Uid != "0" && user.HomeDir != "" {
|
|
lxc_dir = filepath.Join(user.HomeDir, ".local", "share", "lxc")
|
|
}
|
|
|
|
containerDir := filepath.Join(lxc_dir, name)
|
|
outputPath := filepath.Join(config.OutputDir, "rootfs.tar.gz")
|
|
configFilePath := filepath.Join(config.OutputDir, "lxc-config")
|
|
|
|
configFile, err := os.Create(configFilePath)
|
|
|
|
if err != nil {
|
|
err := fmt.Errorf("Error creating config file: %s", err)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return multistep.ActionHalt
|
|
}
|
|
|
|
originalConfigFile, err := os.Open(config.ConfigFile)
|
|
|
|
if err != nil {
|
|
err := fmt.Errorf("Error opening config file: %s", err)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return multistep.ActionHalt
|
|
}
|
|
|
|
_, err = io.Copy(configFile, originalConfigFile)
|
|
|
|
commands := make([][]string, 3)
|
|
commands[0] = []string{
|
|
"lxc-stop", "--name", name,
|
|
}
|
|
commands[1] = []string{
|
|
"tar", "-C", containerDir, "--numeric-owner", "--anchored", "--exclude=./rootfs/dev/log", "-czf", outputPath, "./rootfs",
|
|
}
|
|
commands[2] = []string{
|
|
"chmod", "+x", configFilePath,
|
|
}
|
|
|
|
ui.Say("Exporting container...")
|
|
for _, command := range commands {
|
|
err := RunCommand(command...)
|
|
if err != nil {
|
|
err := fmt.Errorf("Error exporting container: %s", err)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return multistep.ActionHalt
|
|
}
|
|
}
|
|
|
|
return multistep.ActionContinue
|
|
}
|
|
|
|
func (s *stepExport) Cleanup(state multistep.StateBag) {}
|