def test_nothing_is_filtered_if_skip_down_hosts_option_not_set(self):
cfglib.init_config()
cfglib.CONF.migrate.skip_down_hosts = False
self.fake_instance_0.host = 'host1'
self.fake_instance_1.host = 'host2'
hosts_down = ['host1', 'host2', 'host3']
instances = [self.fake_instance_0, self.fake_instance_1]
filtered = nova_compute.filter_down_hosts(hosts_down, instances)
self.assertEqual(filtered, instances)
def test_down_hosts_are_filtered_if_config_option_is_set(self):
def instance(hostname):
inst = mock.Mock()
setattr(inst, nova_compute.INSTANCE_HOST_ATTRIBUTE, hostname)
return inst
num_instances_up = 5
num_hosts_down = 10
hosts_down = ['downhost%d' % i for i in xrange(num_hosts_down)]
instances = [instance('host%d' % i) for i in xrange(num_instances_up)]
instances.extend([instance(host_down) for host_down in hosts_down])
cfglib.init_config()
cfglib.CONF.migrate.skip_down_hosts = True
filtered = nova_compute.filter_down_hosts(
hosts_down=hosts_down, elements=instances,
hostname_attribute=nova_compute.INSTANCE_HOST_ATTRIBUTE)
self.assertEqual(len(filtered), num_instances_up)
