| # Copyright 2015, Google Inc. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| """Test of the GRPC-backed ForeLink and RearLink.""" |
| |
| import threading |
| import unittest |
| |
| from grpc._adapter import fore |
| from grpc._adapter import rear |
| from grpc.framework.base import interfaces |
| from grpc.framework.foundation import logging_pool |
| from grpc_test._adapter import _proto_scenarios |
| from grpc_test._adapter import _test_links |
| |
| _IDENTITY = lambda x: x |
| _TIMEOUT = 32 |
| |
| |
| # TODO(nathaniel): End-to-end metadata testing. |
| def _transform_metadata(unused_metadata): |
| return ( |
| ('one_unused_key', 'one unused value'), |
| ('another_unused_key', 'another unused value'), |
| ) |
| |
| |
| class RoundTripTest(unittest.TestCase): |
| |
| def setUp(self): |
| self.fore_link_pool = logging_pool.pool(8) |
| self.rear_link_pool = logging_pool.pool(8) |
| |
| def tearDown(self): |
| self.rear_link_pool.shutdown(wait=True) |
| self.fore_link_pool.shutdown(wait=True) |
| |
| def testZeroMessageRoundTrip(self): |
| test_operation_id = object() |
| test_method = 'test method' |
| test_fore_link = _test_links.ForeLink(None, None) |
| def rear_action(front_to_back_ticket, fore_link): |
| if front_to_back_ticket.kind in ( |
| interfaces.FrontToBackTicket.Kind.COMPLETION, |
| interfaces.FrontToBackTicket.Kind.ENTIRE): |
| back_to_front_ticket = interfaces.BackToFrontTicket( |
| front_to_back_ticket.operation_id, 0, |
| interfaces.BackToFrontTicket.Kind.COMPLETION, None) |
| fore_link.accept_back_to_front_ticket(back_to_front_ticket) |
| test_rear_link = _test_links.RearLink(rear_action, None) |
| |
| fore_link = fore.ForeLink( |
| self.fore_link_pool, {test_method: None}, {test_method: None}, None, ()) |
| fore_link.join_rear_link(test_rear_link) |
| test_rear_link.join_fore_link(fore_link) |
| fore_link.start() |
| port = fore_link.port() |
| |
| rear_link = rear.RearLink( |
| 'localhost', port, self.rear_link_pool, {test_method: None}, |
| {test_method: None}, False, None, None, None, |
| metadata_transformer=_transform_metadata) |
| rear_link.join_fore_link(test_fore_link) |
| test_fore_link.join_rear_link(rear_link) |
| rear_link.start() |
| |
| front_to_back_ticket = interfaces.FrontToBackTicket( |
| test_operation_id, 0, interfaces.FrontToBackTicket.Kind.ENTIRE, |
| test_method, interfaces.ServicedSubscription.Kind.FULL, None, None, |
| _TIMEOUT) |
| rear_link.accept_front_to_back_ticket(front_to_back_ticket) |
| |
| with test_fore_link.condition: |
| while (not test_fore_link.tickets or |
| test_fore_link.tickets[-1].kind is |
| interfaces.BackToFrontTicket.Kind.CONTINUATION): |
| test_fore_link.condition.wait() |
| |
| rear_link.stop() |
| fore_link.stop() |
| |
| with test_fore_link.condition: |
| self.assertIs( |
| test_fore_link.tickets[-1].kind, |
| interfaces.BackToFrontTicket.Kind.COMPLETION) |
| |
| def testEntireRoundTrip(self): |
| test_operation_id = object() |
| test_method = 'test method' |
| test_front_to_back_datum = b'\x07' |
| test_back_to_front_datum = b'\x08' |
| test_fore_link = _test_links.ForeLink(None, None) |
| rear_sequence_number = [0] |
| def rear_action(front_to_back_ticket, fore_link): |
| if front_to_back_ticket.payload is None: |
| payload = None |
| else: |
| payload = test_back_to_front_datum |
| terminal = front_to_back_ticket.kind in ( |
| interfaces.FrontToBackTicket.Kind.COMPLETION, |
| interfaces.FrontToBackTicket.Kind.ENTIRE) |
| if payload is not None or terminal: |
| if terminal: |
| kind = interfaces.BackToFrontTicket.Kind.COMPLETION |
| else: |
| kind = interfaces.BackToFrontTicket.Kind.CONTINUATION |
| back_to_front_ticket = interfaces.BackToFrontTicket( |
| front_to_back_ticket.operation_id, rear_sequence_number[0], kind, |
| payload) |
| rear_sequence_number[0] += 1 |
| fore_link.accept_back_to_front_ticket(back_to_front_ticket) |
| test_rear_link = _test_links.RearLink(rear_action, None) |
| |
| fore_link = fore.ForeLink( |
| self.fore_link_pool, {test_method: _IDENTITY}, |
| {test_method: _IDENTITY}, None, ()) |
| fore_link.join_rear_link(test_rear_link) |
| test_rear_link.join_fore_link(fore_link) |
| fore_link.start() |
| port = fore_link.port() |
| |
| rear_link = rear.RearLink( |
| 'localhost', port, self.rear_link_pool, {test_method: _IDENTITY}, |
| {test_method: _IDENTITY}, False, None, None, None) |
| rear_link.join_fore_link(test_fore_link) |
| test_fore_link.join_rear_link(rear_link) |
| rear_link.start() |
| |
| front_to_back_ticket = interfaces.FrontToBackTicket( |
| test_operation_id, 0, interfaces.FrontToBackTicket.Kind.ENTIRE, |
| test_method, interfaces.ServicedSubscription.Kind.FULL, None, |
| test_front_to_back_datum, _TIMEOUT) |
| rear_link.accept_front_to_back_ticket(front_to_back_ticket) |
| |
| with test_fore_link.condition: |
| while (not test_fore_link.tickets or |
| test_fore_link.tickets[-1].kind is not |
| interfaces.BackToFrontTicket.Kind.COMPLETION): |
| test_fore_link.condition.wait() |
| |
| rear_link.stop() |
| fore_link.stop() |
| |
| with test_rear_link.condition: |
| front_to_back_payloads = tuple( |
| ticket.payload for ticket in test_rear_link.tickets |
| if ticket.payload is not None) |
| with test_fore_link.condition: |
| back_to_front_payloads = tuple( |
| ticket.payload for ticket in test_fore_link.tickets |
| if ticket.payload is not None) |
| self.assertTupleEqual((test_front_to_back_datum,), front_to_back_payloads) |
| self.assertTupleEqual((test_back_to_front_datum,), back_to_front_payloads) |
| |
| def _perform_scenario_test(self, scenario): |
| test_operation_id = object() |
| test_method = scenario.method() |
| test_fore_link = _test_links.ForeLink(None, None) |
| rear_lock = threading.Lock() |
| rear_sequence_number = [0] |
| def rear_action(front_to_back_ticket, fore_link): |
| with rear_lock: |
| if front_to_back_ticket.payload is not None: |
| response = scenario.response_for_request(front_to_back_ticket.payload) |
| else: |
| response = None |
| terminal = front_to_back_ticket.kind in ( |
| interfaces.FrontToBackTicket.Kind.COMPLETION, |
| interfaces.FrontToBackTicket.Kind.ENTIRE) |
| if response is not None or terminal: |
| if terminal: |
| kind = interfaces.BackToFrontTicket.Kind.COMPLETION |
| else: |
| kind = interfaces.BackToFrontTicket.Kind.CONTINUATION |
| back_to_front_ticket = interfaces.BackToFrontTicket( |
| front_to_back_ticket.operation_id, rear_sequence_number[0], kind, |
| response) |
| rear_sequence_number[0] += 1 |
| fore_link.accept_back_to_front_ticket(back_to_front_ticket) |
| test_rear_link = _test_links.RearLink(rear_action, None) |
| |
| fore_link = fore.ForeLink( |
| self.fore_link_pool, {test_method: scenario.deserialize_request}, |
| {test_method: scenario.serialize_response}, None, ()) |
| fore_link.join_rear_link(test_rear_link) |
| test_rear_link.join_fore_link(fore_link) |
| fore_link.start() |
| port = fore_link.port() |
| |
| rear_link = rear.RearLink( |
| 'localhost', port, self.rear_link_pool, |
| {test_method: scenario.serialize_request}, |
| {test_method: scenario.deserialize_response}, False, None, None, None) |
| rear_link.join_fore_link(test_fore_link) |
| test_fore_link.join_rear_link(rear_link) |
| rear_link.start() |
| |
| commencement_ticket = interfaces.FrontToBackTicket( |
| test_operation_id, 0, |
| interfaces.FrontToBackTicket.Kind.COMMENCEMENT, test_method, |
| interfaces.ServicedSubscription.Kind.FULL, None, None, |
| _TIMEOUT) |
| fore_sequence_number = 1 |
| rear_link.accept_front_to_back_ticket(commencement_ticket) |
| for request in scenario.requests(): |
| continuation_ticket = interfaces.FrontToBackTicket( |
| test_operation_id, fore_sequence_number, |
| interfaces.FrontToBackTicket.Kind.CONTINUATION, None, None, None, |
| request, None) |
| fore_sequence_number += 1 |
| rear_link.accept_front_to_back_ticket(continuation_ticket) |
| completion_ticket = interfaces.FrontToBackTicket( |
| test_operation_id, fore_sequence_number, |
| interfaces.FrontToBackTicket.Kind.COMPLETION, None, None, None, None, |
| None) |
| fore_sequence_number += 1 |
| rear_link.accept_front_to_back_ticket(completion_ticket) |
| |
| with test_fore_link.condition: |
| while (not test_fore_link.tickets or |
| test_fore_link.tickets[-1].kind is not |
| interfaces.BackToFrontTicket.Kind.COMPLETION): |
| test_fore_link.condition.wait() |
| |
| rear_link.stop() |
| fore_link.stop() |
| |
| with test_rear_link.condition: |
| requests = tuple( |
| ticket.payload for ticket in test_rear_link.tickets |
| if ticket.payload is not None) |
| with test_fore_link.condition: |
| responses = tuple( |
| ticket.payload for ticket in test_fore_link.tickets |
| if ticket.payload is not None) |
| self.assertTrue(scenario.verify_requests(requests)) |
| self.assertTrue(scenario.verify_responses(responses)) |
| |
| def testEmptyScenario(self): |
| self._perform_scenario_test(_proto_scenarios.EmptyScenario()) |
| |
| def testBidirectionallyUnaryScenario(self): |
| self._perform_scenario_test(_proto_scenarios.BidirectionallyUnaryScenario()) |
| |
| def testBidirectionallyStreamingScenario(self): |
| self._perform_scenario_test( |
| _proto_scenarios.BidirectionallyStreamingScenario()) |
| |
| |
| if __name__ == '__main__': |
| unittest.main(verbosity=2) |