wavetermdev/waveterm · error

error getting tab: %w

Error message

error getting tab: %w

What it means

Returned when the referenced tab cannot be retrieved, e.g. it does not exist or the store lookup failed. The underlying error is wrapped with %w.

Source

Thrown at pkg/wcore/wcore.go:136

		Event:  wps.Event_WaveObjUpdate,
		Scopes: []string{oref.String()},
		Data: waveobj.WaveObjUpdate{
			UpdateType: waveobj.UpdateType_Update,
			OType:      waveObj.GetOType(),
			OID:        waveobj.GetOID(waveObj),
			Obj:        waveObj,
		},
	})
}

func ResolveBlockIdFromPrefix(ctx context.Context, tabId string, blockIdPrefix string) (string, error) {
	if len(blockIdPrefix) != 8 {
		return "", fmt.Errorf("widget_id must be 8 characters")
	}

	tab, err := wstore.DBMustGet[*waveobj.Tab](ctx, tabId)
	if err != nil {
		return "", fmt.Errorf("error getting tab: %w", err)
	}

	for _, blockId := range tab.BlockIds {
		if strings.HasPrefix(blockId, blockIdPrefix) {
			return blockId, nil
		}
	}

	return "", fmt.Errorf("widget_id not found: %q", blockIdPrefix)
}

func GoSendNoTelemetryUpdate(telemetryEnabled bool) {
	go func() {
		defer func() {
			panichandler.PanicHandler("GoSendNoTelemetryUpdate", recover())
		}()
		ctx, cancelFn := context.WithTimeout(context.Background(), 5*time.Second)
		defer cancelFn()

View on GitHub (pinned to a4447c1563)

Solutions

1. Verify tabId is a valid, currently open tab
2. Handle wstore.ErrNotFound from the wrapped error — the tab was closed/removed
3. Refresh the tab list (wstore.DBGet[*waveobj.Tab]) before resolving
4. Check DB health if ErrNotFound is not the wrapped cause

Example fix

// before
blockId, err := wcore.ResolveBlockIdFromPrefix(ctx, staleTabId, prefix)
// after
tab, err := wstore.DBGet[*waveobj.Tab](ctx, tabId)
if err == nil {
    blockId, err = wcore.ResolveBlockIdFromPrefix(ctx, tabId, prefix)
}

tab, err := wstore.DBGet[*waveobj.Tab](ctx, tabId)
if err != nil { return fmt.Errorf("tab %s unavailable: %w", tabId, err) }

blockId, err := wcore.ResolveBlockIdFromPrefix(ctx, tabId, prefix)
if errors.Is(err, wstore.ErrNotFound) {
    return fmt.Errorf("tab %s no longer exists", tabId)
}

When it happens

Trigger: wstore.DBMustGet returns an error — most commonly the tabId does not exist (ErrNotFound), or the DB read fails. Tab may have been closed while resolution was in flight.

Common situations: Resolving a block prefix in a tab that was already closed; stale tabId cached by a caller; DB corruption or mid-shutdown access.

Understand the failure class

Background: Record Not Found Errors: "not found", RecordNotFound, and "was not found" — what they mean and how to fix them — this error's family across 28 libraries.

Related errors

• error getting block: %w
• error getting tab: %w
• error getting window: %w
• error getting workspace: %w
• error getting tab: %w

AI-assisted analysis of wavetermdev/waveterm@a4447c1563 (2026-09-01). Data as JSON: /api/errors/e5a73379e6dc1c72. Report an issue: GitHub.