import hashlib
import mock
import os
+import pycurl
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)
- force_timeout = [socket.timeout("timed out")]
- with tutil.mock_get(force_timeout) as mock_session:
+ force_timeout = socket.timeout("timed out")
+ with tutil.mock_keep_responses(force_timeout, 0) as mock:
keep_client = arvados.KeepClient(api_client=api_client)
with self.assertRaises(arvados.errors.KeepReadError):
keep_client.get('ffffffffffffffffffffffffffffffff')
- self.assertTrue(mock_session.return_value.get.called)
self.assertEqual(
- arvados.KeepClient.DEFAULT_TIMEOUT,
- mock_session.return_value.get.call_args[1]['timeout'])
+ mock.responses[0].getopt(pycurl.CONNECTTIMEOUT_MS),
+ int(arvados.KeepClient.DEFAULT_TIMEOUT[0]*1000))
+ self.assertEqual(
+ mock.responses[0].getopt(pycurl.TIMEOUT_MS),
+ int(arvados.KeepClient.DEFAULT_TIMEOUT[1]*1000))
def test_put_timeout(self):
api_client = self.mock_keep_services(count=1)
- force_timeout = [socket.timeout("timed out")]
- with tutil.mock_put(force_timeout) as mock_session:
+ force_timeout = socket.timeout("timed out")
+ with tutil.mock_keep_responses(force_timeout, 0) as mock:
keep_client = arvados.KeepClient(api_client=api_client)
with self.assertRaises(arvados.errors.KeepWriteError):
keep_client.put('foo')
- self.assertTrue(mock_session.return_value.put.called)
self.assertEqual(
- arvados.KeepClient.DEFAULT_TIMEOUT,
- mock_session.return_value.put.call_args[1]['timeout'])
+ mock.responses[0].getopt(pycurl.CONNECTTIMEOUT_MS),
+ int(arvados.KeepClient.DEFAULT_TIMEOUT[0]*1000))
+ self.assertEqual(
+ mock.responses[0].getopt(pycurl.TIMEOUT_MS),
+ int(arvados.KeepClient.DEFAULT_TIMEOUT[1]*1000))
def test_proxy_get_timeout(self):
- # Force a timeout, verifying that the requests.get or
- # requests.put method was called with the proxy_timeout
- # setting rather than the default timeout.
api_client = self.mock_keep_services(service_type='proxy', count=1)
- force_timeout = [socket.timeout("timed out")]
- with tutil.mock_get(force_timeout) as mock_session:
+ force_timeout = socket.timeout("timed out")
+ with tutil.mock_keep_responses(force_timeout, 0) as mock:
keep_client = arvados.KeepClient(api_client=api_client)
with self.assertRaises(arvados.errors.KeepReadError):
keep_client.get('ffffffffffffffffffffffffffffffff')
- self.assertTrue(mock_session.return_value.get.called)
self.assertEqual(
- arvados.KeepClient.DEFAULT_PROXY_TIMEOUT,
- mock_session.return_value.get.call_args[1]['timeout'])
+ mock.responses[0].getopt(pycurl.CONNECTTIMEOUT_MS),
+ int(arvados.KeepClient.DEFAULT_PROXY_TIMEOUT[0]*1000))
+ self.assertEqual(
+ mock.responses[0].getopt(pycurl.TIMEOUT_MS),
+ int(arvados.KeepClient.DEFAULT_PROXY_TIMEOUT[1]*1000))
def test_proxy_put_timeout(self):
- # Force a timeout, verifying that the requests.get or
- # requests.put method was called with the proxy_timeout
- # setting rather than the default timeout.
api_client = self.mock_keep_services(service_type='proxy', count=1)
- force_timeout = [socket.timeout("timed out")]
- with tutil.mock_put(force_timeout) as mock_session:
+ force_timeout = socket.timeout("timed out")
+ with tutil.mock_keep_responses(force_timeout, 0) as mock:
keep_client = arvados.KeepClient(api_client=api_client)
with self.assertRaises(arvados.errors.KeepWriteError):
keep_client.put('foo')
- self.assertTrue(mock_session.return_value.put.called)
self.assertEqual(
- arvados.KeepClient.DEFAULT_PROXY_TIMEOUT,
- mock_session.return_value.put.call_args[1]['timeout'])
+ mock.responses[0].getopt(pycurl.CONNECTTIMEOUT_MS),
+ int(arvados.KeepClient.DEFAULT_PROXY_TIMEOUT[0]*1000))
+ self.assertEqual(
+ mock.responses[0].getopt(pycurl.TIMEOUT_MS),
+ int(arvados.KeepClient.DEFAULT_PROXY_TIMEOUT[1]*1000))
def test_probe_order_reference_set(self):
# expected_order[i] is the probe order for
aport = random.randint(1024,65535)
api_client = self.mock_keep_services(service_port=aport, count=16)
keep_client = arvados.KeepClient(api_client=api_client)
- with mock.patch('requests.' + verb,
- side_effect=socket.timeout) as req_mock, \
- self.assertRaises(exc_class) as err_check:
+ with mock.patch('pycurl.Curl') as curl_mock, \
+ self.assertRaises(exc_class) as err_check:
+ curl_mock.return_value.side_effect = socket.timeout
getattr(keep_client, verb)(data)
urls = [urlparse.urlparse(url)
for url in err_check.exception.request_errors()]
def check_errors_from_last_retry(self, verb, exc_class):
api_client = self.mock_keep_services(count=2)
- req_mock = getattr(tutil, 'mock_{}_responses'.format(verb))(
+ req_mock = tutil.mock_keep_responses(
"retry error reporting test", 500, 500, 403, 403)
with req_mock, tutil.skip_sleep, \
self.assertRaises(exc_class) as err_check:
data = 'partial failure test'
data_loc = '{}+{}'.format(hashlib.md5(data).hexdigest(), len(data))
api_client = self.mock_keep_services(count=3)
- with tutil.mock_put_responses(data_loc, 200, 500, 500) as req_mock, \
+ 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(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):
'service_type': 'gateway:test',
} for i in range(gateways)]
self.gateway_roots = [
- "https://[{service_host}]:{service_port}/".format(**gw)
+ "https://{service_host}:{service_port}/".format(**gw)
for gw in self.gateways]
self.api_client = self.mock_keep_services(
count=disks, additional_services=self.gateways)
self.keepClient = arvados.KeepClient(api_client=self.api_client)
- @mock.patch('requests.Session')
- def test_get_with_gateway_hint_first(self, MockSession):
- MockSession.return_value.get.return_value = tutil.fake_requests_response(
+ @mock.patch('pycurl.Curl')
+ def test_get_with_gateway_hint_first(self, MockCurl):
+ MockCurl.return_value = tutil.FakeCurl.make(
code=200, body='foo', headers={'Content-Length': 3})
self.mock_disks_and_gateways()
locator = 'acbd18db4cc2f85cedef654fccc4a4d8+3+K@' + self.gateways[0]['uuid']
self.assertEqual('foo', self.keepClient.get(locator))
- self.assertEqual((self.gateway_roots[0]+locator,),
- MockSession.return_value.get.call_args_list[0][0])
+ self.assertEqual(self.gateway_roots[0]+locator,
+ MockCurl.return_value.getopt(pycurl.URL))
- @mock.patch('requests.Session')
- def test_get_with_gateway_hints_in_order(self, MockSession):
+ @mock.patch('pycurl.Curl')
+ def test_get_with_gateway_hints_in_order(self, MockCurl):
gateways = 4
disks = 3
- MockSession.return_value.get.return_value = tutil.fake_requests_response(
- code=404, body='')
+ mocks = [
+ tutil.FakeCurl.make(code=404, body='')
+ for _ in range(gateways+disks)
+ ]
+ MockCurl.side_effect = tutil.queue_with(mocks)
self.mock_disks_and_gateways(gateways=gateways, disks=disks)
locator = '+'.join(['acbd18db4cc2f85cedef654fccc4a4d8+3'] +
['K@'+gw['uuid'] for gw in self.gateways])
self.keepClient.get(locator)
# Gateways are tried first, in the order given.
for i, root in enumerate(self.gateway_roots):
- self.assertEqual((root+locator,),
- MockSession.return_value.get.call_args_list[i][0])
+ self.assertEqual(root+locator,
+ mocks[i].getopt(pycurl.URL))
# Disk services are tried next.
for i in range(gateways, gateways+disks):
self.assertRegexpMatches(
- MockSession.return_value.get.call_args_list[i][0][0],
+ mocks[i].getopt(pycurl.URL),
r'keep0x')
- @mock.patch('requests.Session')
- def test_get_with_remote_proxy_hint(self, MockSession):
- MockSession.return_value.get.return_value = tutil.fake_requests_response(
+ @mock.patch('pycurl.Curl')
+ def test_get_with_remote_proxy_hint(self, MockCurl):
+ MockCurl.return_value = tutil.FakeCurl.make(
code=200, body='foo', headers={'Content-Length': 3})
self.mock_disks_and_gateways()
locator = 'acbd18db4cc2f85cedef654fccc4a4d8+3+K@xyzzy'
self.assertEqual('foo', self.keepClient.get(locator))
- self.assertEqual(('https://keep.xyzzy.arvadosapi.com/'+locator,),
- MockSession.return_value.get.call_args_list[0][0])
+ self.assertEqual('https://keep.xyzzy.arvadosapi.com/'+locator,
+ MockCurl.return_value.getopt(pycurl.URL))
class KeepClientRetryTestMixin(object):
DEFAULT_EXPECT = KeepClientRetryTestMixin.TEST_DATA
DEFAULT_EXCEPTION = arvados.errors.KeepReadError
HINTED_LOCATOR = KeepClientRetryTestMixin.TEST_LOCATOR + '+K@xyzzy'
- TEST_PATCHER = staticmethod(tutil.mock_get_responses)
+ TEST_PATCHER = staticmethod(tutil.mock_keep_responses)
def run_method(self, locator=KeepClientRetryTestMixin.TEST_LOCATOR,
*args, **kwargs):
return self.new_client().get(locator, *args, **kwargs)
def test_specific_exception_when_not_found(self):
- with tutil.mock_get_responses(self.DEFAULT_EXPECT, 404, 200):
+ with tutil.mock_keep_responses(self.DEFAULT_EXPECT, 404, 200):
self.check_exception(arvados.errors.NotFoundError, num_retries=3)
def test_general_exception_with_mixed_errors(self):
# This test rigs up 50/50 disagreement between two servers, and
# checks that it does not become a NotFoundError.
client = self.new_client()
- with tutil.mock_get_responses(self.DEFAULT_EXPECT, 404, 500):
+ with tutil.mock_keep_responses(self.DEFAULT_EXPECT, 404, 500):
with self.assertRaises(arvados.errors.KeepReadError) as exc_check:
client.get(self.HINTED_LOCATOR)
self.assertNotIsInstance(
"mixed errors raised NotFoundError")
def test_hint_server_can_succeed_without_retries(self):
- with tutil.mock_get_responses(self.DEFAULT_EXPECT, 404, 200, 500):
+ with tutil.mock_keep_responses(self.DEFAULT_EXPECT, 404, 200, 500):
self.check_success(locator=self.HINTED_LOCATOR)
def test_try_next_server_after_timeout(self):
- with tutil.mock_get([
- socket.timeout("timed out"),
- tutil.fake_requests_response(200, self.DEFAULT_EXPECT)]):
+ with tutil.mock_keep_responses(
+ (socket.timeout("timed out"), 200),
+ (self.DEFAULT_EXPECT, 200)):
self.check_success(locator=self.HINTED_LOCATOR)
def test_retry_data_with_wrong_checksum(self):
- with tutil.mock_get((tutil.fake_requests_response(200, s) for s in ['baddata', self.TEST_DATA])):
+ with tutil.mock_keep_responses(
+ ('baddata', 200),
+ (self.DEFAULT_EXPECT, 200)):
self.check_success(locator=self.HINTED_LOCATOR)
class KeepClientRetryPutTestCase(KeepClientRetryTestMixin, unittest.TestCase):
DEFAULT_EXPECT = KeepClientRetryTestMixin.TEST_LOCATOR
DEFAULT_EXCEPTION = arvados.errors.KeepWriteError
- TEST_PATCHER = staticmethod(tutil.mock_put_responses)
+ TEST_PATCHER = staticmethod(tutil.mock_keep_responses)
def run_method(self, data=KeepClientRetryTestMixin.TEST_DATA,
copies=1, *args, **kwargs):
return self.new_client().put(data, copies, *args, **kwargs)
def test_do_not_send_multiple_copies_to_same_server(self):
- with tutil.mock_put_responses(self.DEFAULT_EXPECT, 200):
+ with tutil.mock_keep_responses(self.DEFAULT_EXPECT, 200):
self.check_exception(copies=2, num_retries=3)
projects / arvados.git / blobdiff