How to use _choose_subset_of_hosts_to_reverify method in autotest

Best Python code snippet using autotest_python

monitor_db_cleanup.py

Source:monitor_db_cleanup.py

...125            scheduler_config.config.reverify_period_minutes * 60)126        if reverify_period_sec == 0:127            return False128        return (self._last_reverify_time + reverify_period_sec) <= time.time()129    def _choose_subset_of_hosts_to_reverify(self, hosts):130        """Given hosts needing verification, return a subset to reverify."""131        max_at_once = scheduler_config.config.reverify_max_hosts_at_once132        if (max_at_once > 0 and len(hosts) > max_at_once):133            return random.sample(hosts, max_at_once)134        return sorted(hosts)135    def _reverify_dead_hosts(self):136        if not self._should_reverify_hosts_now():137            return138        self._last_reverify_time = time.time()139        logging.info('Checking for dead hosts to reverify')140        hosts = models.Host.objects.filter(141            status=models.Host.Status.REPAIR_FAILED,142            locked=False,143            invalid=False)144        hosts = hosts.exclude(145            protection=host_protections.Protection.DO_NOT_VERIFY)146        if not hosts:147            return148        hosts = list(hosts)149        total_hosts = len(hosts)150        hosts = self._choose_subset_of_hosts_to_reverify(hosts)151        logging.info('Reverifying dead hosts (%d of %d) %s', len(hosts),152                     total_hosts, ', '.join(host.hostname for host in hosts))153        for host in hosts:154            models.SpecialTask.schedule_special_task(155                host=host, task=models.SpecialTask.Task.VERIFY)156class TwentyFourHourUpkeep(PeriodicCleanup):157    """Cleanup that runs at the startup of monitor_db and every subsequent158       twenty four hours.159    """160    def __init__(self, db, run_at_initialize=True):161        clean_interval = 24 * 60  # 24 hours162        super(TwentyFourHourUpkeep, self).__init__(163            db, clean_interval, run_at_initialize=run_at_initialize)164    def _cleanup(self):...

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