Method Prune

cmd/dagger/shell_state.go:158–183

Prune removes all state instances that are not in use by a variable.

(ctx context.Context)

// Prune removes all state instances that are not in use by a variable.
func (s *ShellStateStore) Prune(ctx context.Context) int {
	hctx := HandlerCtx(ctx)
	if hctx == nil {
		return 0
	}

	used := make(map[string]struct{})

	hctx.Env.Each(func(_ string, v expand.Variable) bool {
		for key := range FindStateKeys(v.String()) {
			used[key] = struct{}{}
		}
		return true
	})

	count := 0
	s.mu.Lock()
	for key := range s.data {
		if _, exists := used[key]; !exists {
			delete(s.data, key)
			count++
		}
	}
	s.mu.Unlock()
	return count
}

func (s *ShellStateStore) debug(ctx context.Context, dump bool) {
	slog := slog.SpanLogger(ctx, InstrumentationLibrary)