import random
import re
import socket
+import threading
+import time
import unittest
import urlparse
import arvados
import arvados.retry
import arvados_testutil as tutil
+import keepstub
import run_test_server
class KeepTestCase(run_test_server.TestCaseWithServers):
self.assertEqual('100::1', service.hostname)
self.assertEqual(10, service.port)
- # test_get_timeout and test_put_timeout test that
- # KeepClient.get and KeepClient.put use the appropriate timeouts
- # when connected directly to a Keep server (i.e. non-proxy timeout)
+ # test_*_timeout verify that KeepClient instructs pycurl to use
+ # the appropriate connection and read timeouts. They don't care
+ # whether pycurl actually exhibits the expected timeout behavior
+ # -- those tests are in the KeepClientTimeout test class.
def test_get_timeout(self):
api_client = self.mock_keep_services(count=1)
keep_client.put(data)
self.assertEqual(2, len(exc_check.exception.request_errors()))
+ def test_proxy_put_with_no_writable_services(self):
+ data = 'test with no writable services'
+ data_loc = '{}+{}'.format(hashlib.md5(data).hexdigest(), len(data))
+ api_client = self.mock_keep_services(service_type='proxy', read_only=True, count=1)
+ with tutil.mock_keep_responses(data_loc, 200, 500, 500) as req_mock, \
+ self.assertRaises(arvados.errors.KeepWriteError) as exc_check:
+ keep_client = arvados.KeepClient(api_client=api_client)
+ keep_client.put(data)
+ self.assertEqual(True, ("no Keep services available" in str(exc_check.exception)))
+ self.assertEqual(0, len(exc_check.exception.request_errors()))
+
+class KeepClientTimeout(unittest.TestCase, tutil.ApiClientMock):
+ DATA = 'x' * 2**10
+
+ class assertTakesBetween(unittest.TestCase):
+ def __init__(self, tmin, tmax):
+ self.tmin = tmin
+ self.tmax = tmax
+
+ def __enter__(self):
+ self.t0 = time.time()
+
+ def __exit__(self, *args, **kwargs):
+ self.assertGreater(time.time() - self.t0, self.tmin)
+ self.assertLess(time.time() - self.t0, self.tmax)
+
+ def setUp(self):
+ sock = socket.socket()
+ sock.bind(('0.0.0.0', 0))
+ self.port = sock.getsockname()[1]
+ sock.close()
+ self.server = keepstub.Server(('0.0.0.0', self.port), keepstub.Handler)
+ self.thread = threading.Thread(target=self.server.serve_forever)
+ self.thread.daemon = True # Exit thread if main proc exits
+ self.thread.start()
+ self.api_client = self.mock_keep_services(
+ count=1,
+ service_host='localhost',
+ service_port=self.port,
+ )
+
+ def tearDown(self):
+ self.server.shutdown()
+
+ def keepClient(self, timeouts=(0.1, 1.0)):
+ return arvados.KeepClient(
+ api_client=self.api_client,
+ timeout=timeouts)
+
+ def test_timeout_slow_connect(self):
+ # Can't simulate TCP delays with our own socket. Leave our
+ # stub server running uselessly, and try to connect to an
+ # unroutable IP address instead.
+ self.api_client = self.mock_keep_services(
+ count=1,
+ service_host='240.0.0.0',
+ )
+ with self.assertTakesBetween(0.1, 0.5):
+ with self.assertRaises(arvados.errors.KeepWriteError):
+ self.keepClient((0.1, 1)).put(self.DATA, copies=1, num_retries=0)
+
+ def test_timeout_slow_request(self):
+ self.server.setdelays(request=0.2)
+ self._test_200ms()
+
+ def test_timeout_slow_response(self):
+ self.server.setdelays(response=0.2)
+ self._test_200ms()
+
+ def test_timeout_slow_response_body(self):
+ self.server.setdelays(response_body=0.2)
+ self._test_200ms()
+
+ def _test_200ms(self):
+ """Connect should be t<100ms, request should be 200ms <= t < 300ms"""
+
+ # Allow 100ms to connect, then 1s for response. Everything
+ # should work, and everything should take at least 200ms to
+ # return.
+ kc = self.keepClient((.1, 1))
+ with self.assertTakesBetween(.2, .3):
+ loc = kc.put(self.DATA, copies=1, num_retries=0)
+ with self.assertTakesBetween(.2, .3):
+ self.assertEqual(self.DATA, kc.get(loc, num_retries=0))
+
+ # Allow 1s to connect, then 100ms for response. Nothing should
+ # work, and everything should take at least 100ms to return.
+ kc = self.keepClient((1, .1))
+ with self.assertTakesBetween(.1, .2):
+ with self.assertRaises(arvados.errors.KeepReadError):
+ kc.get(loc, num_retries=0)
+ with self.assertTakesBetween(.1, .2):
+ with self.assertRaises(arvados.errors.KeepWriteError):
+ kc.put(self.DATA, copies=1, num_retries=0)
+
class KeepClientGatewayTestCase(unittest.TestCase, tutil.ApiClientMock):
def mock_disks_and_gateways(self, disks=3, gateways=1):
projects / arvados.git / blobdiff