11 import arvados_testutil
13 class WebsocketTest(run_test_server.TestCaseWithServers):
16 TIME_PAST = time.time()-3600
17 TIME_FUTURE = time.time()+3600
18 MOCK_WS_URL = 'wss://[{}]/'.format(arvados_testutil.TEST_HOST)
29 except Exception as e:
30 print("Error in teardown: ", e)
31 super(WebsocketTest, self).tearDown()
32 run_test_server.reset()
34 def _test_subscribe(self, poll_fallback, expect_type, start_time=None, expected=1):
35 run_test_server.authorize_with('active')
36 events = Queue.Queue(100)
38 # Create ancestor before subscribing.
39 # When listening with start_time in the past, this should also be retrieved.
40 # However, when start_time is omitted in subscribe, this should not be fetched.
41 ancestor = arvados.api('v1').humans().create(body={}).execute()
43 filters = [['object_uuid', 'is_a', 'arvados#human']]
45 filters.append(['created_at', '>=', start_time])
47 self.ws = arvados.events.subscribe(
48 arvados.api('v1'), filters,
50 poll_fallback=poll_fallback,
51 last_log_id=(1 if start_time else None))
52 self.assertIsInstance(self.ws, expect_type)
53 self.assertEqual(200, events.get(True, 5)['status'])
54 human = arvados.api('v1').humans().create(body={}).execute()
57 for i in range(0, expected):
58 log_object_uuids.append(events.get(True, 5)['object_uuid'])
61 self.assertIn(human['uuid'], log_object_uuids)
64 self.assertIn(ancestor['uuid'], log_object_uuids)
66 with self.assertRaises(Queue.Empty):
67 # assertEqual just serves to show us what unexpected thing
68 # comes out of the queue when the assertRaises fails; when
69 # the test passes, this assertEqual doesn't get called.
70 self.assertEqual(events.get(True, 2), None)
72 def test_subscribe_websocket(self):
74 poll_fallback=False, expect_type=arvados.events.EventClient, expected=1)
76 @mock.patch('arvados.events.EventClient.__init__')
77 def test_subscribe_poll(self, event_client_constr):
78 event_client_constr.side_effect = Exception('All is well')
80 poll_fallback=0.25, expect_type=arvados.events.PollClient, expected=1)
82 def test_subscribe_poll_retry(self):
83 api_mock = mock.MagicMock()
88 error_mock = mock.MagicMock()
89 error_mock.resp.status = 0
90 error_mock._get_reason.return_value = "testing"
91 api_mock.logs().list().execute.side_effect = (arvados.errors.ApiError(error_mock, ""),
92 {"items": [{"id": 1}], "items_available": 1},
93 arvados.errors.ApiError(error_mock, ""),
94 {"items": [{"id": 1}], "items_available": 1})
95 pc = arvados.events.PollClient(api_mock, [], on_ev, 15, None)
101 def test_subscribe_websocket_with_start_time_past(self):
102 self._test_subscribe(
103 poll_fallback=False, expect_type=arvados.events.EventClient,
104 start_time=self.localiso(self.TIME_PAST),
107 @mock.patch('arvados.events.EventClient.__init__')
108 def test_subscribe_poll_with_start_time_past(self, event_client_constr):
109 event_client_constr.side_effect = Exception('All is well')
110 self._test_subscribe(
111 poll_fallback=0.25, expect_type=arvados.events.PollClient,
112 start_time=self.localiso(self.TIME_PAST),
115 def test_subscribe_websocket_with_start_time_future(self):
116 self._test_subscribe(
117 poll_fallback=False, expect_type=arvados.events.EventClient,
118 start_time=self.localiso(self.TIME_FUTURE),
121 @mock.patch('arvados.events.EventClient.__init__')
122 def test_subscribe_poll_with_start_time_future(self, event_client_constr):
123 event_client_constr.side_effect = Exception('All is well')
124 self._test_subscribe(
125 poll_fallback=0.25, expect_type=arvados.events.PollClient,
126 start_time=self.localiso(self.TIME_FUTURE),
129 def test_subscribe_websocket_with_start_time_past_utc(self):
130 self._test_subscribe(
131 poll_fallback=False, expect_type=arvados.events.EventClient,
132 start_time=self.utciso(self.TIME_PAST),
135 def test_subscribe_websocket_with_start_time_future_utc(self):
136 self._test_subscribe(
137 poll_fallback=False, expect_type=arvados.events.EventClient,
138 start_time=self.utciso(self.TIME_FUTURE),
142 return time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime(t))
144 def localiso(self, t):
145 return time.strftime('%Y-%m-%dT%H:%M:%S', time.localtime(t)) + self.isotz(-time.timezone/60)
147 def isotz(self, offset):
148 """Convert minutes-east-of-UTC to ISO8601 time zone designator"""
149 return '{:+03d}{:02d}'.format(offset/60, offset%60)
151 # Test websocket reconnection on (un)execpted close
152 def _test_websocket_reconnect(self, close_unexpected):
153 run_test_server.authorize_with('active')
154 events = Queue.Queue(100)
156 logstream = io.BytesIO()
157 rootLogger = logging.getLogger()
158 streamHandler = logging.StreamHandler(logstream)
159 rootLogger.addHandler(streamHandler)
161 filters = [['object_uuid', 'is_a', 'arvados#human']]
162 filters.append(['created_at', '>=', self.localiso(self.TIME_PAST)])
163 self.ws = arvados.events.subscribe(
164 arvados.api('v1'), filters,
168 self.assertIsInstance(self.ws, arvados.events.EventClient)
169 self.assertEqual(200, events.get(True, 5)['status'])
172 human = arvados.api('v1').humans().create(body={}).execute()
175 self.assertIn(human['uuid'], events.get(True, 5)['object_uuid'])
176 with self.assertRaises(Queue.Empty):
177 self.assertEqual(events.get(True, 2), None)
181 self.ws.ec.close_connection()
185 # create one more obj
186 human2 = arvados.api('v1').humans().create(body={}).execute()
188 # (un)expect the object creation event
190 log_object_uuids = []
191 for i in range(0, 2):
192 event = events.get(True, 5)
193 if event.get('object_uuid') != None:
194 log_object_uuids.append(event['object_uuid'])
195 with self.assertRaises(Queue.Empty):
196 self.assertEqual(events.get(True, 2), None)
197 self.assertNotIn(human['uuid'], log_object_uuids)
198 self.assertIn(human2['uuid'], log_object_uuids)
200 with self.assertRaises(Queue.Empty):
201 self.assertEqual(events.get(True, 2), None)
203 # verify log message to ensure that an (un)expected close
204 log_messages = logstream.getvalue()
205 closeLogFound = log_messages.find("Unexpected close. Reconnecting.")
206 retryLogFound = log_messages.find("Error during websocket reconnect. Will retry")
208 self.assertNotEqual(closeLogFound, -1)
210 self.assertEqual(closeLogFound, -1)
211 rootLogger.removeHandler(streamHandler)
213 def test_websocket_reconnect_on_unexpected_close(self):
214 self._test_websocket_reconnect(True)
216 def test_websocket_no_reconnect_on_close_by_user(self):
217 self._test_websocket_reconnect(False)
219 # Test websocket reconnection retry
220 @mock.patch('arvados.events._EventClient.connect')
221 def test_websocket_reconnect_retry(self, event_client_connect):
222 event_client_connect.side_effect = [None, Exception('EventClient.connect error'), None]
224 logstream = io.BytesIO()
225 rootLogger = logging.getLogger()
226 streamHandler = logging.StreamHandler(logstream)
227 rootLogger.addHandler(streamHandler)
229 run_test_server.authorize_with('active')
230 events = Queue.Queue(100)
232 filters = [['object_uuid', 'is_a', 'arvados#human']]
233 self.ws = arvados.events.subscribe(
234 arvados.api('v1'), filters,
238 self.assertIsInstance(self.ws, arvados.events.EventClient)
240 # simulate improper close
243 # verify log messages to ensure retry happened
244 log_messages = logstream.getvalue()
245 found = log_messages.find("Error 'EventClient.connect error' during websocket reconnect.")
246 self.assertNotEqual(found, -1)
247 rootLogger.removeHandler(streamHandler)
249 @mock.patch('arvados.events._EventClient')
250 def test_subscribe_method(self, websocket_client):
251 filters = [['object_uuid', 'is_a', 'arvados#human']]
252 client = arvados.events.EventClient(
253 self.MOCK_WS_URL, [], lambda event: None, None)
254 client.subscribe(filters[:], 99)
255 websocket_client().subscribe.assert_called_with(filters, 99)
257 @mock.patch('arvados.events._EventClient')
258 def test_unsubscribe(self, websocket_client):
259 filters = [['object_uuid', 'is_a', 'arvados#human']]
260 client = arvados.events.EventClient(
261 self.MOCK_WS_URL, filters[:], lambda event: None, None)
262 client.unsubscribe(filters[:])
263 websocket_client().unsubscribe.assert_called_with(filters)
265 @mock.patch('arvados.events._EventClient')
266 def test_run_forever_survives_reconnects(self, websocket_client):
267 connected = threading.Event()
268 websocket_client().connect.side_effect = connected.set
269 client = arvados.events.EventClient(
270 self.MOCK_WS_URL, [], lambda event: None, None)
271 forever_thread = threading.Thread(target=client.run_forever)
272 forever_thread.start()
273 # Simulate an unexpected disconnect, and wait for reconnect.
274 close_thread = threading.Thread(target=client.on_closed)
276 self.assertTrue(connected.wait(timeout=self.TEST_TIMEOUT))
278 run_forever_alive = forever_thread.is_alive()
280 forever_thread.join()
281 self.assertTrue(run_forever_alive)
282 self.assertEqual(2, websocket_client().connect.call_count)
285 class PollClientTestCase(unittest.TestCase):
288 class MockLogs(object):
292 self.lock = threading.Lock()
296 self.logs.append(log)
298 def return_list(self, num_retries=None):
302 return {'items': retval, 'items_available': len(retval)}
305 self.logs = self.MockLogs()
306 self.arv = mock.MagicMock(name='arvados.api()')
307 self.arv.logs().list().execute.side_effect = self.logs.return_list
308 self.callback_called = threading.Event()
309 self.recv_events = []
312 if hasattr(self, 'client'):
313 self.client.close(timeout=None)
315 def callback(self, event):
316 self.recv_events.append(event)
317 self.callback_called.set()
319 def build_client(self, filters=None, callback=None, last_log_id=None, poll_time=99):
323 callback = self.callback
324 self.client = arvados.events.PollClient(
325 self.arv, filters, callback, poll_time, last_log_id)
327 def was_filter_used(self, target):
328 return any(target in call[-1].get('filters', [])
329 for call in self.arv.logs().list.call_args_list)
331 def test_callback(self):
332 test_log = {'id': 12345, 'testkey': 'testtext'}
333 self.logs.add({'id': 123})
334 self.build_client(poll_time=.01)
336 self.assertTrue(self.callback_called.wait(self.TEST_TIMEOUT))
337 self.callback_called.clear()
338 self.logs.add(test_log.copy())
339 self.assertTrue(self.callback_called.wait(self.TEST_TIMEOUT))
340 self.client.close(timeout=None)
341 self.assertIn(test_log, self.recv_events)
343 def test_subscribe(self):
344 client_filter = ['kind', '=', 'arvados#test']
346 self.client.subscribe([client_filter[:]])
348 self.assertTrue(self.callback_called.wait(self.TEST_TIMEOUT))
349 self.client.close(timeout=None)
350 self.assertTrue(self.was_filter_used(client_filter))
352 def test_unsubscribe(self):
353 client_filter = ['kind', '=', 'arvados#test']
355 self.client.subscribe([client_filter[:]])
356 self.client.unsubscribe([client_filter[:]])
358 self.client.close(timeout=None)
359 self.assertFalse(self.was_filter_used(client_filter))
361 def test_run_forever(self):
364 forever_thread = threading.Thread(target=self.client.run_forever)
365 forever_thread.start()
366 self.assertTrue(self.callback_called.wait(self.TEST_TIMEOUT))
367 self.assertTrue(forever_thread.is_alive())
369 forever_thread.join()