#!/usr/bin/python

import common
import logging, unittest
from autotest_lib.frontend import setup_django_environment
from autotest_lib.database import database_connection
from autotest_lib.frontend.afe import frontend_test_utils, models
from autotest_lib.scheduler import monitor_db_cleanup, scheduler_config
from autotest_lib.client.common_lib import host_protections

class UserCleanupTest(unittest.TestCase, frontend_test_utils.FrontendTestMixin):
    def setUp(self):
        logging.basicConfig(level=logging.DEBUG)
        self._frontend_common_setup()
        self._database = (
            database_connection.DatabaseConnection.get_test_database())
        self._database.connect(db_type='django')
        self.cleanup = monitor_db_cleanup.UserCleanup(self._database, 1)


    def tearDown(self):
        self._frontend_common_teardown()


    def test_clear_stuck_hosts(self):
        """Test _clear_stuck_hosts method. """
        for i, status in zip([0, 1], [models.Host.Status.RUNNING,
                                      models.Host.Status.RESETTING]):
            self.hosts[i].status = status
            self.hosts[i].leased = True
            self.hosts[i].save()
            job = self._create_job_simple([self.hosts[i].id])
            h = job.hostqueueentry_set.all()[0]
            h.active = 0
            h.status = models.HostQueueEntry.Status.COMPLETED
            h.save()
            s = models.SpecialTask.schedule_special_task(
                    host=self.hosts[i], task=models.SpecialTask.Task.VERIFY)
            s.is_active = 0
            s.save()

        self.cleanup._clear_stuck_hosts()

        for i in range(0, len(self.hosts)):
            host = models.Host.objects.get(id=self.hosts[i].id)
            if i in (0, 1):
                self.assertEquals(host.status,
                                  models.Host.Status.REPAIR_FAILED)
            else:
                self.assertEquals(host.status,
                                  models.Host.Status.READY)


    def test_reverify_dead_hosts(self):
        # unlimited reverifies
        self.god.stub_with(scheduler_config.config,
                           'reverify_max_hosts_at_once', 0)
        for i in (0, 1, 2):
            self.hosts[i].status = models.Host.Status.REPAIR_FAILED
            self.hosts[i].save()

        self.hosts[1].locked = True
        self.hosts[1].save()

        self.hosts[2].protection = host_protections.Protection.DO_NOT_VERIFY
        self.hosts[2].save()

        self.god.stub_with(self.cleanup, '_should_reverify_hosts_now',
                           lambda : True)
        self.cleanup._reverify_dead_hosts()

        tasks = models.SpecialTask.objects.all()
        self.assertEquals(len(tasks), 1)
        self.assertEquals(tasks[0].host.id, 1)
        self.assertEquals(tasks[0].task, models.SpecialTask.Task.VERIFY)


    def test_reverify_dead_hosts_limits(self):
        # limit the number of reverifies
        self.assertTrue(hasattr(scheduler_config.config,
                                'reverify_max_hosts_at_once'))
        self.god.stub_with(scheduler_config.config,
                           'reverify_max_hosts_at_once', 2)
        for i in (0, 1, 2, 3, 4, 5):
            self.hosts[i].status = models.Host.Status.REPAIR_FAILED
            self.hosts[i].save()

        self.hosts[1].locked = True
        self.hosts[1].save()

        self.hosts[2].protection = host_protections.Protection.DO_NOT_VERIFY
        self.hosts[2].save()

        self.god.stub_with(self.cleanup, '_should_reverify_hosts_now',
                           lambda : True)
        self.cleanup._reverify_dead_hosts()

        tasks = models.SpecialTask.objects.all()
        # four hosts need reverifying but our max limit was set to 2
        self.assertEquals(len(tasks), 2)
        self.assertTrue(tasks[0].host.id in (1, 4, 5, 6))
        self.assertTrue(tasks[1].host.id in (1, 4, 5, 6))
        self.assertEquals(tasks[0].task, models.SpecialTask.Task.VERIFY)
        self.assertEquals(tasks[1].task, models.SpecialTask.Task.VERIFY)


if __name__ == '__main__':
    unittest.main()