# Source code for django_celery_beat.utils

    """Utilities."""
    # -- XXX This module must not use translation as that causes
    # -- a recursive loader import!
    from django.conf import settings
    from django.utils import timezone

    is_aware = timezone.is_aware
    # celery schedstate return None will make it not work
    NEVER_CHECK_TIMEOUT = 100000000

    # see Issue #222
    now_localtime = getattr(timezone, 'template_localtime', timezone.localtime)

    def make_aware(value):
        """Force datatime to have timezone information."""
        if getattr(settings, 'USE_TZ', False):
            # naive datetimes are assumed to be in UTC.
            if timezone.is_naive(value):
                value = timezone.make_aware(value, timezone.utc)
            # then convert to the Django configured timezone.
            default_tz = timezone.get_default_timezone()
            value = timezone.localtime(value, default_tz)
        else:
            # naive datetimes are assumed to be in local timezone.
            if timezone.is_naive(value):
                value = timezone.make_aware(value, timezone.get_default_timezone())
        return value

    def now():
        """Return the current date and time."""
        if getattr(settings, 'USE_TZ', False):
            return now_localtime(timezone.now())
        else:
            return timezone.now()

    def is_database_scheduler(scheduler):
        """Return true if Celery is configured to use the db scheduler."""
        if not scheduler:
            return False
        from kombu.utils import symbol_by_name

        from .schedulers import DatabaseScheduler
        return (
            scheduler == 'django'
            or issubclass(symbol_by_name(scheduler), DatabaseScheduler)
        )