package lxc import ( "context" "fmt" "log" "os/user" "path/filepath" "github.com/hashicorp/packer/helper/multistep" "github.com/hashicorp/packer/packer" ) type stepLxcCreate struct{} func (s *stepLxcCreate) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction { config := state.Get("config").(*Config) ui := state.Get("ui").(packer.Ui) name := config.ContainerName // TODO: read from env 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") } rootfs := filepath.Join(lxc_dir, name, "rootfs") if config.PackerForce { s.Cleanup(state) } commands := make([][]string, 3) commands[0] = append(commands[0], "env") commands[0] = append(commands[0], config.EnvVars...) commands[0] = append(commands[0], "lxc-create") commands[0] = append(commands[0], config.CreateOptions...) commands[0] = append(commands[0], []string{"-n", name, "-t", config.Name, "--"}...) commands[0] = append(commands[0], config.Parameters...) // prevent tmp from being cleaned on boot, we put provisioning scripts there // todo: wait for init to finish before moving on to provisioning instead of this commands[1] = []string{"touch", filepath.Join(rootfs, "tmp", ".tmpfs")} commands[2] = append([]string{"lxc-start"}, config.StartOptions...) commands[2] = append(commands[2], []string{"-d", "--name", name}...) ui.Say("Creating container...") for _, command := range commands { err := RunCommand(command...) if err != nil { err := fmt.Errorf("Error creating container: %s", err) state.Put("error", err) ui.Error(err.Error()) return multistep.ActionHalt } } state.Put("mount_path", rootfs) return multistep.ActionContinue } func (s *stepLxcCreate) Cleanup(state multistep.StateBag) { config := state.Get("config").(*Config) ui := state.Get("ui").(packer.Ui) command := []string{ "lxc-destroy", "-f", "-n", config.ContainerName, } ui.Say("Unregistering and deleting virtual machine...") if err := RunCommand(command...); err != nil { ui.Error(fmt.Sprintf("Error deleting virtual machine: %s", err)) } }