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): MAIN_SERVER = {} KEEP_SERVER = {} @classmethod def setUpClass(cls): super(KeepTestCase, cls).setUpClass() run_test_server.authorize_with("admin") cls.api_client = arvados.api('v1') cls.keep_client = arvados.KeepClient(api_client=cls.api_client, proxy='', local_store='') def test_KeepBasicRWTest(self): foo_locator = self.keep_client.put('foo') self.assertRegexpMatches( foo_locator, '^acbd18db4cc2f85cedef654fccc4a4d8\+3', 'wrong md5 hash from Keep.put("foo"): ' + foo_locator) self.assertEqual(self.keep_client.get(foo_locator), 'foo', 'wrong content from Keep.get(md5("foo"))') def test_KeepBinaryRWTest(self): blob_str = '\xff\xfe\xf7\x00\x01\x02' blob_locator = self.keep_client.put(blob_str) self.assertRegexpMatches( blob_locator, '^7fc7c53b45e53926ba52821140fef396\+6', ('wrong locator from Keep.put():' + blob_locator)) self.assertEqual(self.keep_client.get(blob_locator), blob_str, 'wrong content from Keep.get(md5())') def test_KeepLongBinaryRWTest(self): blob_str = '\xff\xfe\xfd\xfc\x00\x01\x02\x03' for i in range(0,23): blob_str = blob_str + blob_str blob_locator = self.keep_client.put(blob_str) self.assertRegexpMatches( blob_locator, '^84d90fc0d8175dd5dcfab04b999bc956\+67108864', ('wrong locator from Keep.put(): ' + blob_locator)) self.assertEqual(self.keep_client.get(blob_locator), blob_str, 'wrong content from Keep.get(md5())') def test_KeepSingleCopyRWTest(self): blob_str = '\xff\xfe\xfd\xfc\x00\x01\x02\x03' blob_locator = self.keep_client.put(blob_str, copies=1) self.assertRegexpMatches( blob_locator, '^c902006bc98a3eb4a3663b65ab4a6fab\+8', ('wrong locator from Keep.put(): ' + blob_locator)) self.assertEqual(self.keep_client.get(blob_locator), blob_str, 'wrong content from Keep.get(md5())') def test_KeepEmptyCollectionTest(self): blob_locator = self.keep_client.put('', copies=1) self.assertRegexpMatches( blob_locator, '^d41d8cd98f00b204e9800998ecf8427e\+0', ('wrong locator from Keep.put(""): ' + blob_locator)) def test_unicode_must_be_ascii(self): # If unicode type, must only consist of valid ASCII foo_locator = self.keep_client.put(u'foo') self.assertRegexpMatches( foo_locator, '^acbd18db4cc2f85cedef654fccc4a4d8\+3', 'wrong md5 hash from Keep.put("foo"): ' + foo_locator) with self.assertRaises(UnicodeEncodeError): # Error if it is not ASCII self.keep_client.put(u'\xe2') with self.assertRaises(arvados.errors.ArgumentError): # Must be a string type self.keep_client.put({}) class KeepPermissionTestCase(run_test_server.TestCaseWithServers): MAIN_SERVER = {} KEEP_SERVER = {'blob_signing_key': 'abcdefghijk0123456789', 'enforce_permissions': True} def test_KeepBasicRWTest(self): run_test_server.authorize_with('active') keep_client = arvados.KeepClient() foo_locator = keep_client.put('foo') self.assertRegexpMatches( foo_locator, r'^acbd18db4cc2f85cedef654fccc4a4d8\+3\+A[a-f0-9]+@[a-f0-9]+$', 'invalid locator from Keep.put("foo"): ' + foo_locator) self.assertEqual(keep_client.get(foo_locator), 'foo', 'wrong content from Keep.get(md5("foo"))') # GET with an unsigned locator => NotFound bar_locator = keep_client.put('bar') unsigned_bar_locator = "37b51d194a7513e45b56f6524f2d51f2+3" self.assertRegexpMatches( bar_locator, r'^37b51d194a7513e45b56f6524f2d51f2\+3\+A[a-f0-9]+@[a-f0-9]+$', 'invalid locator from Keep.put("bar"): ' + bar_locator) self.assertRaises(arvados.errors.NotFoundError, keep_client.get, unsigned_bar_locator) # GET from a different user => NotFound run_test_server.authorize_with('spectator') self.assertRaises(arvados.errors.NotFoundError, arvados.Keep.get, bar_locator) # Unauthenticated GET for a signed locator => NotFound # Unauthenticated GET for an unsigned locator => NotFound keep_client.api_token = '' self.assertRaises(arvados.errors.NotFoundError, keep_client.get, bar_locator) self.assertRaises(arvados.errors.NotFoundError, keep_client.get, unsigned_bar_locator) # KeepOptionalPermission: starts Keep with --permission-key-file # but not --enforce-permissions (i.e. generate signatures on PUT # requests, but do not require them for GET requests) # # All of these requests should succeed when permissions are optional: # * authenticated request, signed locator # * authenticated request, unsigned locator # * unauthenticated request, signed locator # * unauthenticated request, unsigned locator class KeepOptionalPermission(run_test_server.TestCaseWithServers): MAIN_SERVER = {} KEEP_SERVER = {'blob_signing_key': 'abcdefghijk0123456789', 'enforce_permissions': False} @classmethod def setUpClass(cls): super(KeepOptionalPermission, cls).setUpClass() run_test_server.authorize_with("admin") cls.api_client = arvados.api('v1') def setUp(self): super(KeepOptionalPermission, self).setUp() self.keep_client = arvados.KeepClient(api_client=self.api_client, proxy='', local_store='') def _put_foo_and_check(self): signed_locator = self.keep_client.put('foo') self.assertRegexpMatches( signed_locator, r'^acbd18db4cc2f85cedef654fccc4a4d8\+3\+A[a-f0-9]+@[a-f0-9]+$', 'invalid locator from Keep.put("foo"): ' + signed_locator) return signed_locator def test_KeepAuthenticatedSignedTest(self): signed_locator = self._put_foo_and_check() self.assertEqual(self.keep_client.get(signed_locator), 'foo', 'wrong content from Keep.get(md5("foo"))') def test_KeepAuthenticatedUnsignedTest(self): signed_locator = self._put_foo_and_check() self.assertEqual(self.keep_client.get("acbd18db4cc2f85cedef654fccc4a4d8"), 'foo', 'wrong content from Keep.get(md5("foo"))') def test_KeepUnauthenticatedSignedTest(self): # Check that signed GET requests work even when permissions # enforcement is off. signed_locator = self._put_foo_and_check() self.keep_client.api_token = '' self.assertEqual(self.keep_client.get(signed_locator), 'foo', 'wrong content from Keep.get(md5("foo"))') def test_KeepUnauthenticatedUnsignedTest(self): # Since --enforce-permissions is not in effect, GET requests # need not be authenticated. signed_locator = self._put_foo_and_check() self.keep_client.api_token = '' self.assertEqual(self.keep_client.get("acbd18db4cc2f85cedef654fccc4a4d8"), 'foo', 'wrong content from Keep.get(md5("foo"))') class KeepProxyTestCase(run_test_server.TestCaseWithServers): MAIN_SERVER = {} KEEP_SERVER = {} 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): arvados.config.settings().pop('ARVADOS_EXTERNAL_CLIENT', None) super(KeepProxyTestCase, self).tearDown() def test_KeepProxyTest1(self): # Will use ARVADOS_KEEP_PROXY environment variable that is set by # setUpClass(). keep_client = arvados.KeepClient(api_client=self.api_client, local_store='') baz_locator = keep_client.put('baz') self.assertRegexpMatches( baz_locator, '^73feffa4b7f6bb68e44cf984c85f6e88\+3', 'wrong md5 hash from Keep.put("baz"): ' + baz_locator) self.assertEqual(keep_client.get(baz_locator), 'baz', 'wrong content from Keep.get(md5("baz"))') self.assertTrue(keep_client.using_proxy) def test_KeepProxyTest2(self): # Don't instantiate the proxy directly, but set the X-External-Client # header. The API server should direct us to the proxy. arvados.config.settings()['ARVADOS_EXTERNAL_CLIENT'] = 'true' keep_client = arvados.KeepClient(api_client=self.api_client, proxy='', local_store='') baz_locator = keep_client.put('baz2') self.assertRegexpMatches( baz_locator, '^91f372a266fe2bf2823cb8ec7fda31ce\+4', 'wrong md5 hash from Keep.put("baz2"): ' + baz_locator) self.assertEqual(keep_client.get(baz_locator), 'baz2', 'wrong content from Keep.get(md5("baz2"))') self.assertTrue(keep_client.using_proxy) class KeepClientServiceTestCase(unittest.TestCase, tutil.ApiClientMock): def get_service_roots(self, api_client): keep_client = arvados.KeepClient(api_client=api_client) services = keep_client.weighted_service_roots(arvados.KeepLocator('0'*32)) return [urlparse.urlparse(url) for url in sorted(services)] def test_ssl_flag_respected_in_roots(self): for ssl_flag in [False, True]: services = self.get_service_roots(self.mock_keep_services( service_ssl_flag=ssl_flag)) self.assertEqual( ('https' if ssl_flag else 'http'), services[0].scheme) def test_correct_ports_with_ipv6_addresses(self): service = self.get_service_roots(self.mock_keep_services( service_type='proxy', service_host='100::1', service_port=10, count=1))[0] self.assertEqual('100::1', service.hostname) self.assertEqual(10, service.port) # 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_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.assertEqual( 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_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.assertEqual( 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): api_client = self.mock_keep_services(service_type='proxy', count=1) 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.assertEqual( 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): api_client = self.mock_keep_services(service_type='proxy', count=1) 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.assertEqual( 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 # 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_keep_services(count=16) keep_client = arvados.KeepClient(api_client=api_client) for i, hash in enumerate(hashes): roots = keep_client.weighted_service_roots(arvados.KeepLocator(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_keep_services(count=initial_services) keep_client = arvados.KeepClient(api_client=api_client) probes_before = [ keep_client.weighted_service_roots(arvados.KeepLocator(hash)) for hash in hashes] for added_services in range(1, 12): api_client = self.mock_keep_services(count=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( arvados.KeepLocator(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' # Arbitrary port number: 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('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()] self.assertEqual([('keep0x' + c, aport) 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.request_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_keep_services(count=2) 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: keep_client = arvados.KeepClient(api_client=api_client) getattr(keep_client, verb)('d41d8cd98f00b204e9800998ecf8427e+0', num_retries=3) self.assertEqual([403, 403], [ getattr(error, 'status_code', None) for error in err_check.exception.request_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_keep_services(count=3) 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): self.gateways = [{ 'uuid': 'zzzzz-bi6l4-gateway{:08d}'.format(i), 'owner_uuid': 'zzzzz-tpzed-000000000000000', 'service_host': 'gatewayhost{}'.format(i), 'service_port': 12345, 'service_ssl_flag': True, 'service_type': 'gateway:test', } for i in range(gateways)] self.gateway_roots = [ "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('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, MockCurl.return_value.getopt(pycurl.URL)) @mock.patch('pycurl.Curl') def test_get_with_gateway_hints_in_order(self, MockCurl): gateways = 4 disks = 3 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]) with self.assertRaises(arvados.errors.NotFoundError): self.keepClient.get(locator) # Gateways are tried first, in the order given. for i, root in enumerate(self.gateway_roots): self.assertEqual(root+locator, mocks[i].getopt(pycurl.URL)) # Disk services are tried next. for i in range(gateways, gateways+disks): self.assertRegexpMatches( mocks[i].getopt(pycurl.URL), r'keep0x') @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, MockCurl.return_value.getopt(pycurl.URL)) class KeepClientRetryTestMixin(object): # Testing with a local Keep store won't exercise the retry behavior. # Instead, our strategy is: # * Create a client with one proxy specified (pointed at a black # hole), so there's no need to instantiate an API client, and # all HTTP requests come from one place. # * Mock httplib's request method to provide simulated responses. # This lets us test the retry logic extensively without relying on any # 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' def setUp(self): self.client_kwargs = {'proxy': self.PROXY_ADDR, 'local_store': ''} def new_client(self, **caller_kwargs): kwargs = self.client_kwargs.copy() kwargs.update(caller_kwargs) return arvados.KeepClient(**kwargs) def run_method(self, *args, **kwargs): raise NotImplementedError("test subclasses must define run_method") def check_success(self, expected=None, *args, **kwargs): if expected is None: expected = self.DEFAULT_EXPECT self.assertEqual(expected, self.run_method(*args, **kwargs)) def check_exception(self, error_class=None, *args, **kwargs): if error_class is None: error_class = self.DEFAULT_EXCEPTION self.assertRaises(error_class, self.run_method, *args, **kwargs) def test_immediate_success(self): with self.TEST_PATCHER(self.DEFAULT_EXPECT, 200): self.check_success() def test_retry_then_success(self): with self.TEST_PATCHER(self.DEFAULT_EXPECT, 500, 200): self.check_success(num_retries=3) def test_no_default_retry(self): with self.TEST_PATCHER(self.DEFAULT_EXPECT, 500, 200): self.check_exception() def test_no_retry_after_permanent_error(self): with self.TEST_PATCHER(self.DEFAULT_EXPECT, 403, 200): self.check_exception(num_retries=3) def test_error_after_retries_exhausted(self): 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 self.TEST_PATCHER(self.DEFAULT_EXPECT, 500, 200): self.check_success() @tutil.skip_sleep class KeepClientRetryGetTestCase(KeepClientRetryTestMixin, unittest.TestCase): DEFAULT_EXPECT = KeepClientRetryTestMixin.TEST_DATA DEFAULT_EXCEPTION = arvados.errors.KeepReadError HINTED_LOCATOR = KeepClientRetryTestMixin.TEST_LOCATOR + '+K@xyzzy' 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_keep_responses(self.DEFAULT_EXPECT, 404, 200): self.check_exception(arvados.errors.NotFoundError, num_retries=3) def test_general_exception_with_mixed_errors(self): # get should raise a NotFoundError if no server returns the block, # and a high threshold of servers report that it's not found. # 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_keep_responses(self.DEFAULT_EXPECT, 404, 500): with self.assertRaises(arvados.errors.KeepReadError) as exc_check: client.get(self.HINTED_LOCATOR) self.assertNotIsInstance( exc_check.exception, arvados.errors.NotFoundError, "mixed errors raised NotFoundError") def test_hint_server_can_succeed_without_retries(self): 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_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_keep_responses( ('baddata', 200), (self.DEFAULT_EXPECT, 200)): self.check_success(locator=self.HINTED_LOCATOR) @tutil.skip_sleep class KeepClientRetryPutTestCase(KeepClientRetryTestMixin, unittest.TestCase): DEFAULT_EXPECT = KeepClientRetryTestMixin.TEST_LOCATOR DEFAULT_EXCEPTION = arvados.errors.KeepWriteError 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_keep_responses(self.DEFAULT_EXPECT, 200): self.check_exception(copies=2, num_retries=3)