services/nodemanager/tests/testutil.py

   1 #!/usr/bin/env python
   2
   3 from __future__ import absolute_import, print_function
   4
   5 import datetime
   6 import threading
   7 import time
   8
   9 import mock
  10 import pykka
  11
  12 from . import pykka_timeout
  13
  14 no_sleep = mock.patch('time.sleep', lambda n: None)
  15
  16 def arvados_node_mock(node_num=99, job_uuid=None, age=0, **kwargs):
  17     mod_time = datetime.datetime.utcnow() - datetime.timedelta(seconds=age)
  18     if job_uuid is True:
  19         job_uuid = 'zzzzz-jjjjj-jobjobjobjobjob'
  20     crunch_worker_state = 'idle' if (job_uuid is None) else 'busy'
  21     node = {'uuid': 'zzzzz-yyyyy-{:015x}'.format(node_num),
  22             'created_at': '2014-01-01T01:02:03.04050607Z',
  23             'modified_at': mod_time.strftime('%Y-%m-%dT%H:%M:%S.%fZ'),
  24             'slot_number': node_num,
  25             'hostname': 'compute{}'.format(node_num),
  26             'domain': 'zzzzz.arvadosapi.com',
  27             'ip_address': ip_address_mock(node_num),
  28             'job_uuid': job_uuid,
  29             'crunch_worker_state': crunch_worker_state,
  30             'info': {'ping_secret': 'defaulttestsecret'}}
  31     node.update(kwargs)
  32     return node
  33
  34 def cloud_object_mock(name_id):
  35     # A very generic mock, useful for stubbing libcloud objects we
  36     # only search for and pass around, like locations, subnets, etc.
  37     cloud_object = mock.NonCallableMagicMock(['id', 'name'],
  38                                              name='cloud_object')
  39     cloud_object.id = str(name_id)
  40     cloud_object.name = cloud_object.id.upper()
  41     return cloud_object
  42
  43 def cloud_node_mock(node_num=99, **extra):
  44     node = mock.NonCallableMagicMock(
  45         ['id', 'name', 'state', 'public_ips', 'private_ips', 'driver', 'size',
  46          'image', 'extra'],
  47         name='cloud_node')
  48     node.id = str(node_num)
  49     node.name = node.id
  50     node.public_ips = []
  51     node.private_ips = [ip_address_mock(node_num)]
  52     node.extra = extra
  53     return node
  54
  55 def ip_address_mock(last_octet):
  56     return '10.20.30.{}'.format(last_octet)
  57
  58 class MockShutdownTimer(object):
  59     def _set_state(self, is_open, next_opening):
  60         self.window_open = lambda: is_open
  61         self.next_opening = lambda: next_opening
  62
  63
  64 class MockSize(object):
  65     def __init__(self, factor):
  66         self.id = 'z{}.test'.format(factor)
  67         self.name = self.id
  68         self.ram = 128 * factor
  69         self.disk = 100 * factor
  70         self.bandwidth = 16 * factor
  71         self.price = float(factor)
  72         self.extra = {}
  73
  74     def __eq__(self, other):
  75         return self.id == other.id
  76
  77
  78 class MockTimer(object):
  79     def __init__(self, deliver_immediately=True):
  80         self.deliver_immediately = deliver_immediately
  81         self.messages = []
  82         self.lock = threading.Lock()
  83
  84     def deliver(self):
  85         with self.lock:
  86             to_deliver = self.messages
  87             self.messages = []
  88         for callback, args, kwargs in to_deliver:
  89             callback(*args, **kwargs)
  90
  91     def schedule(self, want_time, callback, *args, **kwargs):
  92         with self.lock:
  93             self.messages.append((callback, args, kwargs))
  94         if self.deliver_immediately:
  95             self.deliver()
  96
  97
  98 class ActorTestMixin(object):
  99     FUTURE_CLASS = pykka.ThreadingFuture
 100     TIMEOUT = pykka_timeout
 101
 102     def tearDown(self):
 103         pykka.ActorRegistry.stop_all()
 104
 105     def stop_proxy(self, proxy):
 106         return proxy.actor_ref.stop(timeout=self.TIMEOUT)
 107
 108     def wait_for_assignment(self, proxy, attr_name, unassigned=None,
 109                             timeout=TIMEOUT):
 110         deadline = time.time() + timeout
 111         while True:
 112             loop_timeout = deadline - time.time()
 113             if loop_timeout <= 0:
 114                 self.fail("actor did not assign {} in time".format(attr_name))
 115             result = getattr(proxy, attr_name).get(loop_timeout)
 116             if result is not unassigned:
 117                 return result
 118
 119
 120 class DriverTestMixin(object):
 121     def setUp(self):
 122         self.driver_mock = mock.MagicMock(name='driver_mock')
 123         super(DriverTestMixin, self).setUp()
 124
 125     def new_driver(self, auth_kwargs={}, list_kwargs={}, create_kwargs={}):
 126         create_kwargs.setdefault('ping_host', '100::')
 127         return self.TEST_CLASS(
 128             auth_kwargs, list_kwargs, create_kwargs,
 129             driver_class=self.driver_mock)
 130
 131     def driver_method_args(self, method_name):
 132         return getattr(self.driver_mock(), method_name).call_args
 133
 134
 135 class RemotePollLoopActorTestMixin(ActorTestMixin):
 136     def build_monitor(self, *args, **kwargs):
 137         self.timer = mock.MagicMock(name='timer_mock')
 138         self.client = mock.MagicMock(name='client_mock')
 139         self.subscriber = mock.Mock(name='subscriber_mock')
 140         self.monitor = self.TEST_CLASS.start(
 141             self.client, self.timer, *args, **kwargs).proxy()