Manage image artifacts and show VM create progress

Stop relying on ad hoc rootfs handling by adding image promotion, managed work-seed fingerprint metadata, and lazy self-healing for older managed images after the first create.

Rebuild guest images with baked SSH access, a guest NIC bootstrap, and default opencode services, and add the staged Void kernel/initramfs/modules workflow so void-exp uses a matching Void boot stack.

Replace the opaque blocking vm.create RPC with a begin/status flow that prints live stages in the CLI while still waiting for vsock health and opencode on guest port 4096.

Validate with GOCACHE=/tmp/banger-gocache go test ./... and live void-exp create/delete smoke runs.
This commit is contained in:
Thales Maciel 2026-03-21 14:48:01 -03:00
parent 9f09b0d25c
commit 30f0c0b54a
No known key found for this signature in database
GPG key ID: 33112E6833C34679
37 changed files with 2334 additions and 99 deletions

View file

@ -46,6 +46,16 @@ var (
vmHealthFunc = func(ctx context.Context, socketPath, idOrName string) (api.VMHealthResult, error) {
return rpc.Call[api.VMHealthResult](ctx, socketPath, "vm.health", api.VMRefParams{IDOrName: idOrName})
}
vmCreateBeginFunc = func(ctx context.Context, socketPath string, params api.VMCreateParams) (api.VMCreateBeginResult, error) {
return rpc.Call[api.VMCreateBeginResult](ctx, socketPath, "vm.create.begin", params)
}
vmCreateStatusFunc = func(ctx context.Context, socketPath, operationID string) (api.VMCreateStatusResult, error) {
return rpc.Call[api.VMCreateStatusResult](ctx, socketPath, "vm.create.status", api.VMCreateStatusParams{ID: operationID})
}
vmCreateCancelFunc = func(ctx context.Context, socketPath, operationID string) error {
_, err := rpc.Call[api.Empty](ctx, socketPath, "vm.create.cancel", api.VMCreateStatusParams{ID: operationID})
return err
}
vmPortsFunc = func(ctx context.Context, socketPath, idOrName string) (api.VMPortsResult, error) {
return rpc.Call[api.VMPortsResult](ctx, socketPath, "vm.ports", api.VMRefParams{IDOrName: idOrName})
}
@ -323,11 +333,11 @@ func newVMCreateCommand() *cobra.Command {
if err != nil {
return err
}
result, err := rpc.Call[api.VMShowResult](cmd.Context(), layout.SocketPath, "vm.create", params)
vm, err := runVMCreate(cmd.Context(), layout.SocketPath, cmd.ErrOrStderr(), params)
if err != nil {
return err
}
return printVMSummary(cmd.OutOrStdout(), result.VM)
return printVMSummary(cmd.OutOrStdout(), vm)
},
}
cmd.Flags().StringVar(&name, "name", "", "vm name")
@ -575,6 +585,7 @@ func newImageCommand() *cobra.Command {
cmd.AddCommand(
newImageBuildCommand(),
newImageRegisterCommand(),
newImagePromoteCommand(),
newImageListCommand(),
newImageShowCommand(),
newImageDeleteCommand(),
@ -651,6 +662,28 @@ func newImageRegisterCommand() *cobra.Command {
return cmd
}
func newImagePromoteCommand() *cobra.Command {
return &cobra.Command{
Use: "promote <id-or-name>",
Short: "Promote an unmanaged image to a managed artifact",
Args: exactArgsUsage(1, "usage: banger image promote <id-or-name>"),
RunE: func(cmd *cobra.Command, args []string) error {
if err := system.EnsureSudo(cmd.Context()); err != nil {
return err
}
layout, _, err := ensureDaemon(cmd.Context())
if err != nil {
return err
}
result, err := rpc.Call[api.ImageShowResult](cmd.Context(), layout.SocketPath, "image.promote", api.ImageRefParams{IDOrName: args[0]})
if err != nil {
return err
}
return printImageSummary(cmd.OutOrStdout(), result.Image)
},
}
}
func newImageListCommand() *cobra.Command {
return &cobra.Command{
Use: "list",
@ -1255,6 +1288,141 @@ type anyWriter interface {
Write(p []byte) (n int, err error)
}
func runVMCreate(ctx context.Context, socketPath string, stderr io.Writer, params api.VMCreateParams) (model.VMRecord, error) {
begin, err := vmCreateBeginFunc(ctx, socketPath, params)
if err != nil {
return model.VMRecord{}, err
}
renderer := newVMCreateProgressRenderer(stderr)
renderer.render(begin.Operation)
op := begin.Operation
for {
if op.Done {
renderer.render(op)
if op.Success && op.VM != nil {
return *op.VM, nil
}
if strings.TrimSpace(op.Error) == "" {
return model.VMRecord{}, errors.New("vm create failed")
}
return model.VMRecord{}, errors.New(op.Error)
}
select {
case <-ctx.Done():
cancelCtx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
_ = vmCreateCancelFunc(cancelCtx, socketPath, op.ID)
return model.VMRecord{}, ctx.Err()
case <-time.After(200 * time.Millisecond):
}
status, err := vmCreateStatusFunc(ctx, socketPath, op.ID)
if err != nil {
if ctx.Err() != nil {
cancelCtx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
_ = vmCreateCancelFunc(cancelCtx, socketPath, op.ID)
return model.VMRecord{}, ctx.Err()
}
return model.VMRecord{}, err
}
op = status.Operation
renderer.render(op)
}
}
type vmCreateProgressRenderer struct {
out io.Writer
enabled bool
lastLine string
}
func newVMCreateProgressRenderer(out io.Writer) *vmCreateProgressRenderer {
return &vmCreateProgressRenderer{
out: out,
enabled: writerSupportsProgress(out),
}
}
func (r *vmCreateProgressRenderer) render(op api.VMCreateOperation) {
if r == nil || !r.enabled {
return
}
line := formatVMCreateProgress(op)
if line == "" || line == r.lastLine {
return
}
r.lastLine = line
_, _ = fmt.Fprintln(r.out, line)
}
func writerSupportsProgress(out io.Writer) bool {
file, ok := out.(*os.File)
if !ok {
return false
}
info, err := file.Stat()
if err != nil {
return false
}
return info.Mode()&os.ModeCharDevice != 0
}
func formatVMCreateProgress(op api.VMCreateOperation) string {
stage := strings.TrimSpace(op.Stage)
detail := strings.TrimSpace(op.Detail)
label := vmCreateStageLabel(stage)
if label == "" && detail == "" {
return ""
}
if label == "" {
return "[vm create] " + detail
}
if detail == "" {
return "[vm create] " + label
}
return "[vm create] " + label + ": " + detail
}
func vmCreateStageLabel(stage string) string {
switch strings.TrimSpace(stage) {
case "queued":
return "queued"
case "resolve_image":
return "resolving image"
case "reserve_vm":
return "allocating vm"
case "preflight":
return "checking host prerequisites"
case "prepare_rootfs":
return "preparing root filesystem"
case "prepare_host_features":
return "preparing host features"
case "prepare_work_disk":
return "preparing work disk"
case "boot_firecracker":
return "starting firecracker"
case "wait_vsock_agent":
return "waiting for vsock agent"
case "wait_guest_ready":
return "waiting for guest services"
case "wait_opencode":
return "waiting for opencode"
case "apply_dns":
return "publishing dns"
case "apply_nat":
return "configuring nat"
case "finalize":
return "finalizing"
case "ready":
return "ready"
default:
return strings.ReplaceAll(stage, "_", " ")
}
}
func shortID(id string) string {
if len(id) <= 12 {
return id

View file

@ -170,6 +170,17 @@ func TestImageRegisterFlagsExist(t *testing.T) {
}
}
func TestImagePromoteCommandExists(t *testing.T) {
root := NewBangerCommand()
image, _, err := root.Find([]string{"image"})
if err != nil {
t.Fatalf("find image: %v", err)
}
if _, _, err := image.Find([]string{"promote"}); err != nil {
t.Fatalf("find promote: %v", err)
}
}
func TestVMKillFlagsExist(t *testing.T) {
root := NewBangerCommand()
vm, _, err := root.Find([]string{"vm"})
@ -304,6 +315,95 @@ func TestVMCreateParamsFromFlagsRejectsNonPositiveCPUAndMemory(t *testing.T) {
}
}
func TestRunVMCreatePollsUntilDone(t *testing.T) {
origBegin := vmCreateBeginFunc
origStatus := vmCreateStatusFunc
origCancel := vmCreateCancelFunc
t.Cleanup(func() {
vmCreateBeginFunc = origBegin
vmCreateStatusFunc = origStatus
vmCreateCancelFunc = origCancel
})
vm := model.VMRecord{
ID: "vm-id",
Name: "devbox",
Spec: model.VMSpec{WorkDiskSizeBytes: model.DefaultWorkDiskSize},
Runtime: model.VMRuntime{
State: model.VMStateRunning,
GuestIP: "172.16.0.2",
DNSName: "devbox.vm",
},
}
vmCreateBeginFunc = func(context.Context, string, api.VMCreateParams) (api.VMCreateBeginResult, error) {
return api.VMCreateBeginResult{
Operation: api.VMCreateOperation{
ID: "op-1",
Stage: "prepare_work_disk",
Detail: "cloning work seed",
},
}, nil
}
statusCalls := 0
vmCreateStatusFunc = func(context.Context, string, string) (api.VMCreateStatusResult, error) {
statusCalls++
if statusCalls == 1 {
return api.VMCreateStatusResult{
Operation: api.VMCreateOperation{
ID: "op-1",
Stage: "wait_opencode",
Detail: "waiting for opencode on guest port 4096",
},
}, nil
}
return api.VMCreateStatusResult{
Operation: api.VMCreateOperation{
ID: "op-1",
Stage: "ready",
Detail: "vm is ready",
Done: true,
Success: true,
VM: &vm,
},
}, nil
}
vmCreateCancelFunc = func(context.Context, string, string) error {
t.Fatal("cancel should not be called")
return nil
}
got, err := runVMCreate(context.Background(), "/tmp/bangerd.sock", &bytes.Buffer{}, api.VMCreateParams{Name: "devbox"})
if err != nil {
t.Fatalf("runVMCreate: %v", err)
}
if got.Name != vm.Name || got.Runtime.GuestIP != vm.Runtime.GuestIP {
t.Fatalf("vm = %+v, want %+v", got, vm)
}
if statusCalls != 2 {
t.Fatalf("statusCalls = %d, want 2", statusCalls)
}
}
func TestVMCreateProgressRendererSuppressesDuplicateLines(t *testing.T) {
var stderr bytes.Buffer
renderer := &vmCreateProgressRenderer{out: &stderr, enabled: true}
renderer.render(api.VMCreateOperation{Stage: "prepare_work_disk", Detail: "cloning work seed"})
renderer.render(api.VMCreateOperation{Stage: "prepare_work_disk", Detail: "cloning work seed"})
renderer.render(api.VMCreateOperation{Stage: "wait_opencode", Detail: "waiting for opencode on guest port 4096"})
lines := strings.Split(strings.TrimSpace(stderr.String()), "\n")
if len(lines) != 2 {
t.Fatalf("rendered lines = %q, want 2 lines", stderr.String())
}
if lines[0] != "[vm create] preparing work disk: cloning work seed" {
t.Fatalf("first line = %q", lines[0])
}
if lines[1] != "[vm create] waiting for opencode: waiting for opencode on guest port 4096" {
t.Fatalf("second line = %q", lines[1])
}
}
func TestVMSetParamsFromFlagsConflict(t *testing.T) {
if _, err := vmSetParamsFromFlags("devbox", -1, -1, "", true, true); err == nil {
t.Fatal("expected nat conflict error")