import hashlib
import mock
import os
+import re
import socket
import unittest
import urlparse
import arvados_testutil as tutil
import run_test_server
-class KeepRendezvousWeightTestCase(unittest.TestCase):
- def setUp(self):
- self.keep_client = arvados.KeepClient(
- api_client=mock.MagicMock(name='api_client'),
- proxy='', local_store='')
- self.keep_client._keep_services = []
- self.n_services = 0
-
- def addServices(self, n):
- for x in range(n):
- uuid = "zzzzz-bi6l4-{:015x}".format(self.n_services)
- uri = "https://[0.0.0.{}]:25107/".format(self.n_services)
- self.keep_client._keep_services.append(
- {'uuid': uuid, '_service_root': uri})
- self.n_services += 1
-
- def test_ProbeWasteAddingOneServer(self):
- hashes = [
- hashlib.md5("{:064x}".format(x)).hexdigest() for x in range(100)]
- initial_services = 12
- self.addServices(initial_services)
- probes_before = [
- self.keep_client.weighted_service_roots(hash) for hash in hashes]
- for added_services in range(1, 12):
- self.addServices(1)
- total_penalty = 0
- for hash_index in range(len(hashes)):
- probe_after = self.keep_client.weighted_service_roots(
- hashes[hash_index])
- penalty = probe_after.index(probes_before[hash_index][0])
- self.assertLessEqual(penalty, added_services)
- total_penalty += penalty
- # Average penalty per block should not exceed
- # N(added)/N(orig) by more than 20%, and should get closer
- # to the ideal as we add data points.
- expect_penalty = (
- added_services *
- len(hashes) / initial_services)
- max_penalty = (
- expect_penalty *
- (120 - added_services)/100)
- min_penalty = (
- expect_penalty * 8/10)
- self.assertTrue(
- min_penalty <= total_penalty <= max_penalty,
- "With {}+{} services, {} blocks, penalty {} but expected {}..{}".format(
- initial_services,
- added_services,
- len(hashes),
- total_penalty,
- min_penalty,
- max_penalty))
-
-
class KeepTestCase(run_test_server.TestCaseWithServers):
MAIN_SERVER = {}
KEEP_SERVER = {}
class KeepProxyTestCase(run_test_server.TestCaseWithServers):
MAIN_SERVER = {}
KEEP_SERVER = {}
- KEEP_PROXY_SERVER = {'auth': 'admin'}
+ KEEP_PROXY_SERVER = {}
@classmethod
def setUpClass(cls):
super(KeepProxyTestCase, cls).setUpClass()
+ run_test_server.authorize_with('active')
cls.api_client = arvados.api('v1')
def tearDown(self):
api_client.keep_services().accessible().execute.return_value = {
'items_available': len(services),
'items': [{
- 'uuid': 'zzzzz-bi6l4-mockservice{:04x}'.format(index),
- 'owner_uuid': 'zzzzz-tpzed-mockownerabcdef',
+ 'uuid': 'zzzzz-bi6l4-{:015x}'.format(index),
+ 'owner_uuid': 'zzzzz-tpzed-000000000000000',
'service_host': host,
'service_port': port,
'service_ssl_flag': ssl,
}
return api_client
+ def mock_n_keep_disks(self, service_count):
+ return self.mock_keep_services(
+ *[("keep0x{:x}".format(index), 80, False, 'disk')
+ for index in range(service_count)])
+
def get_service_roots(self, *services):
api_client = self.mock_keep_services(*services)
keep_client = arvados.KeepClient(api_client=api_client)
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)
+
+ def test_get_timeout(self):
+ api_client = self.mock_keep_services(('keep', 10, False, 'disk'))
+ keep_client = arvados.KeepClient(api_client=api_client)
+ force_timeout = [socket.timeout("timed out")]
+ with mock.patch('requests.get', side_effect=force_timeout) as mock_request:
+ with self.assertRaises(arvados.errors.KeepReadError):
+ keep_client.get('ffffffffffffffffffffffffffffffff')
+ self.assertTrue(mock_request.called)
+ self.assertEqual(
+ arvados.KeepClient.DEFAULT_TIMEOUT,
+ mock_request.call_args[1]['timeout'])
+
+ def test_put_timeout(self):
+ api_client = self.mock_keep_services(('keep', 10, False, 'disk'))
+ keep_client = arvados.KeepClient(api_client=api_client)
+ force_timeout = [socket.timeout("timed out")]
+ with mock.patch('requests.put', side_effect=force_timeout) as mock_request:
+ with self.assertRaises(arvados.errors.KeepWriteError):
+ keep_client.put('foo')
+ self.assertTrue(mock_request.called)
+ self.assertEqual(
+ arvados.KeepClient.DEFAULT_TIMEOUT,
+ mock_request.call_args[1]['timeout'])
+
+ 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(('keep', 10, False, 'proxy'))
+ keep_client = arvados.KeepClient(api_client=api_client)
+ force_timeout = [socket.timeout("timed out")]
+ with mock.patch('requests.get', side_effect=force_timeout) as mock_request:
+ with self.assertRaises(arvados.errors.KeepReadError):
+ keep_client.get('ffffffffffffffffffffffffffffffff')
+ self.assertTrue(mock_request.called)
+ self.assertEqual(
+ arvados.KeepClient.DEFAULT_PROXY_TIMEOUT,
+ mock_request.call_args[1]['timeout'])
+
+ 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(('keep', 10, False, 'proxy'))
+ keep_client = arvados.KeepClient(api_client=api_client)
+ force_timeout = [socket.timeout("timed out")]
+ with mock.patch('requests.put', side_effect=force_timeout) as mock_request:
+ with self.assertRaises(arvados.errors.KeepWriteError):
+ keep_client.put('foo')
+ self.assertTrue(mock_request.called)
+ self.assertEqual(
+ arvados.KeepClient.DEFAULT_PROXY_TIMEOUT,
+ mock_request.call_args[1]['timeout'])
+
+ def test_probe_order_reference_set(self):
+ # expected_order[i] is the probe order for
+ # hash=md5(sprintf("%064x",i)) where there are 16 services
+ # with uuid sprintf("anything-%015x",j) with j in 0..15. E.g.,
+ # the first probe for the block consisting of 64 "0"
+ # characters is the service whose uuid is
+ # "zzzzz-bi6l4-000000000000003", so expected_order[0][0]=='3'.
+ expected_order = [
+ list('3eab2d5fc9681074'),
+ list('097dba52e648f1c3'),
+ list('c5b4e023f8a7d691'),
+ list('9d81c02e76a3bf54'),
+ ]
+ hashes = [
+ hashlib.md5("{:064x}".format(x)).hexdigest()
+ for x in range(len(expected_order))]
+ api_client = self.mock_n_keep_disks(16)
+ keep_client = arvados.KeepClient(api_client=api_client)
+ for i, hash in enumerate(hashes):
+ roots = keep_client.weighted_service_roots(hash)
+ got_order = [
+ re.search(r'//\[?keep0x([0-9a-f]+)', root).group(1)
+ for root in roots]
+ self.assertEqual(expected_order[i], got_order)
+
+ def test_probe_waste_adding_one_server(self):
+ hashes = [
+ hashlib.md5("{:064x}".format(x)).hexdigest() for x in range(100)]
+ initial_services = 12
+ api_client = self.mock_n_keep_disks(initial_services)
+ keep_client = arvados.KeepClient(api_client=api_client)
+ probes_before = [
+ keep_client.weighted_service_roots(hash) for hash in hashes]
+ for added_services in range(1, 12):
+ api_client = self.mock_n_keep_disks(initial_services+added_services)
+ keep_client = arvados.KeepClient(api_client=api_client)
+ total_penalty = 0
+ for hash_index in range(len(hashes)):
+ probe_after = keep_client.weighted_service_roots(
+ hashes[hash_index])
+ penalty = probe_after.index(probes_before[hash_index][0])
+ self.assertLessEqual(penalty, added_services)
+ total_penalty += penalty
+ # Average penalty per block should not exceed
+ # N(added)/N(orig) by more than 20%, and should get closer
+ # to the ideal as we add data points.
+ expect_penalty = (
+ added_services *
+ len(hashes) / initial_services)
+ max_penalty = (
+ expect_penalty *
+ (120 - added_services)/100)
+ min_penalty = (
+ expect_penalty * 8/10)
+ self.assertTrue(
+ min_penalty <= total_penalty <= max_penalty,
+ "With {}+{} services, {} blocks, penalty {} but expected {}..{}".format(
+ initial_services,
+ added_services,
+ len(hashes),
+ total_penalty,
+ min_penalty,
+ max_penalty))
+
+ def check_64_zeros_error_order(self, verb, exc_class):
+ data = '0' * 64
+ if verb == 'get':
+ data = hashlib.md5(data).hexdigest() + '+1234'
+ api_client = self.mock_n_keep_disks(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:
+ getattr(keep_client, verb)(data)
+ urls = [urlparse.urlparse(url)
+ for url in err_check.exception.service_errors()]
+ self.assertEqual([('keep0x' + c, 80) for c in '3eab2d5fc9681074'],
+ [(url.hostname, url.port) for url in urls])
+
+ def test_get_error_shows_probe_order(self):
+ self.check_64_zeros_error_order('get', arvados.errors.KeepReadError)
+
+ def test_put_error_shows_probe_order(self):
+ self.check_64_zeros_error_order('put', arvados.errors.KeepWriteError)
+
+ def check_no_services_error(self, verb, exc_class):
+ api_client = mock.MagicMock(name='api_client')
+ api_client.keep_services().accessible().execute.side_effect = (
+ arvados.errors.ApiError)
+ keep_client = arvados.KeepClient(api_client=api_client)
+ with self.assertRaises(exc_class) as err_check:
+ getattr(keep_client, verb)('d41d8cd98f00b204e9800998ecf8427e+0')
+ self.assertEqual(0, len(err_check.exception.service_errors()))
+
+ def test_get_error_with_no_services(self):
+ self.check_no_services_error('get', arvados.errors.KeepReadError)
+
+ def test_put_error_with_no_services(self):
+ self.check_no_services_error('put', arvados.errors.KeepWriteError)
+
+ def check_errors_from_last_retry(self, verb, exc_class):
+ api_client = self.mock_n_keep_disks(2)
+ keep_client = arvados.KeepClient(api_client=api_client)
+ req_mock = getattr(tutil, 'mock_{}_responses'.format(verb))(
+ "retry error reporting test", 500, 500, 403, 403)
+ with req_mock, tutil.skip_sleep, \
+ self.assertRaises(exc_class) as err_check:
+ getattr(keep_client, verb)('d41d8cd98f00b204e9800998ecf8427e+0',
+ num_retries=3)
+ self.assertEqual([403, 403], [
+ getattr(error, 'status_code', None)
+ for error in err_check.exception.service_errors().itervalues()])
+
+ def test_get_error_reflects_last_retry(self):
+ self.check_errors_from_last_retry('get', arvados.errors.KeepReadError)
+
+ def test_put_error_reflects_last_retry(self):
+ self.check_errors_from_last_retry('put', arvados.errors.KeepWriteError)
+
+ def test_put_error_does_not_include_successful_puts(self):
+ data = 'partial failure test'
+ data_loc = '{}+{}'.format(hashlib.md5(data).hexdigest(), len(data))
+ api_client = self.mock_n_keep_disks(3)
+ keep_client = arvados.KeepClient(api_client=api_client)
+ with tutil.mock_put_responses(data_loc, 200, 500, 500) as req_mock, \
+ self.assertRaises(arvados.errors.KeepWriteError) as exc_check:
+ keep_client.put(data)
+ self.assertEqual(2, len(exc_check.exception.service_errors()))
+
class KeepClientRetryTestMixin(object):
# Testing with a local Keep store won't exercise the retry behavior.
# supporting servers, and prevents side effects in case something hiccups.
# To use this mixin, define DEFAULT_EXPECT, DEFAULT_EXCEPTION, and
# run_method().
+ #
+ # Test classes must define TEST_PATCHER to a method that mocks
+ # out appropriate methods in the client.
+
PROXY_ADDR = 'http://[%s]:65535/' % (tutil.TEST_HOST,)
TEST_DATA = 'testdata'
TEST_LOCATOR = 'ef654c40ab4f1747fc699915d4f70902+8'
self.assertRaises(error_class, self.run_method, *args, **kwargs)
def test_immediate_success(self):
- with tutil.mock_responses(self.DEFAULT_EXPECT, 200):
+ with self.TEST_PATCHER(self.DEFAULT_EXPECT, 200):
self.check_success()
def test_retry_then_success(self):
- with tutil.mock_responses(self.DEFAULT_EXPECT, 500, 200):
+ with self.TEST_PATCHER(self.DEFAULT_EXPECT, 500, 200):
self.check_success(num_retries=3)
def test_no_default_retry(self):
- with tutil.mock_responses(self.DEFAULT_EXPECT, 500, 200):
+ with self.TEST_PATCHER(self.DEFAULT_EXPECT, 500, 200):
self.check_exception()
def test_no_retry_after_permanent_error(self):
- with tutil.mock_responses(self.DEFAULT_EXPECT, 403, 200):
+ with self.TEST_PATCHER(self.DEFAULT_EXPECT, 403, 200):
self.check_exception(num_retries=3)
def test_error_after_retries_exhausted(self):
- with tutil.mock_responses(self.DEFAULT_EXPECT, 500, 500, 200):
+ with self.TEST_PATCHER(self.DEFAULT_EXPECT, 500, 500, 200):
self.check_exception(num_retries=1)
def test_num_retries_instance_fallback(self):
self.client_kwargs['num_retries'] = 3
- with tutil.mock_responses(self.DEFAULT_EXPECT, 500, 200):
+ with self.TEST_PATCHER(self.DEFAULT_EXPECT, 500, 200):
self.check_success()
DEFAULT_EXPECT = KeepClientRetryTestMixin.TEST_DATA
DEFAULT_EXCEPTION = arvados.errors.KeepReadError
HINTED_LOCATOR = KeepClientRetryTestMixin.TEST_LOCATOR + '+K@xyzzy'
+ TEST_PATCHER = staticmethod(tutil.mock_get_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_responses(self.DEFAULT_EXPECT, 404, 200):
+ with tutil.mock_get_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_responses(self.DEFAULT_EXPECT, 404, 500):
+ with tutil.mock_get_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_responses(self.DEFAULT_EXPECT, 404, 200, 500):
+ with tutil.mock_get_responses(self.DEFAULT_EXPECT, 404, 200, 500):
self.check_success(locator=self.HINTED_LOCATOR)
def test_try_next_server_after_timeout(self):
side_effects = [
socket.timeout("timed out"),
- (tutil.fake_httplib2_response(200), self.DEFAULT_EXPECT)]
- with mock.patch('httplib2.Http.request',
+ tutil.fake_requests_response(200, self.DEFAULT_EXPECT)]
+ with mock.patch('requests.get',
side_effect=iter(side_effects)):
self.check_success(locator=self.HINTED_LOCATOR)
def test_retry_data_with_wrong_checksum(self):
- side_effects = ((tutil.fake_httplib2_response(200), s)
+ side_effects = (tutil.fake_requests_response(200, s)
for s in ['baddata', self.TEST_DATA])
- with mock.patch('httplib2.Http.request', side_effect=side_effects):
+ with mock.patch('requests.get', side_effect=side_effects):
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)
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_responses(self.DEFAULT_EXPECT, 200):
+ with tutil.mock_put_responses(self.DEFAULT_EXPECT, 200):
self.check_exception(copies=2, num_retries=3)
projects / arvados.git / blobdiff