mirror of https://github.com/grpc/grpc.git
Merge pull request #3152 from nathanielmanistaatgoogle/beta-codegen
Python Beta codegen.pull/3162/head
Nathaniel Manista
9 years ago
commit
50aa6f682e
5 changed files with 1336 additions and 20 deletions
@ -0,0 +1,541 @@ |
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# Copyright 2015, Google Inc. |
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# All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions are |
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# met: |
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# |
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# * Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# * Redistributions in binary form must reproduce the above |
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# copyright notice, this list of conditions and the following disclaimer |
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# in the documentation and/or other materials provided with the |
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# distribution. |
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# * Neither the name of Google Inc. nor the names of its |
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# contributors may be used to endorse or promote products derived from |
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# this software without specific prior written permission. |
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# |
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
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import argparse |
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import contextlib |
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import distutils.spawn |
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import errno |
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import itertools |
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import os |
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import pkg_resources |
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import shutil |
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import subprocess |
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import sys |
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import tempfile |
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import threading |
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import time |
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import unittest |
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|
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from grpc.framework.alpha import exceptions |
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from grpc.framework.foundation import future |
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|
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# Identifiers of entities we expect to find in the generated module. |
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SERVICER_IDENTIFIER = 'EarlyAdopterTestServiceServicer' |
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SERVER_IDENTIFIER = 'EarlyAdopterTestServiceServer' |
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STUB_IDENTIFIER = 'EarlyAdopterTestServiceStub' |
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SERVER_FACTORY_IDENTIFIER = 'early_adopter_create_TestService_server' |
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STUB_FACTORY_IDENTIFIER = 'early_adopter_create_TestService_stub' |
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|
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# The timeout used in tests of RPCs that are supposed to expire. |
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SHORT_TIMEOUT = 2 |
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# The timeout used in tests of RPCs that are not supposed to expire. The |
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# absurdly large value doesn't matter since no passing execution of this test |
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# module will ever wait the duration. |
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LONG_TIMEOUT = 600 |
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NO_DELAY = 0 |
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|
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|
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class _ServicerMethods(object): |
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|
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def __init__(self, test_pb2, delay): |
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self._condition = threading.Condition() |
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self._delay = delay |
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self._paused = False |
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self._fail = False |
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self._test_pb2 = test_pb2 |
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|
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@contextlib.contextmanager |
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def pause(self): # pylint: disable=invalid-name |
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with self._condition: |
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self._paused = True |
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yield |
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with self._condition: |
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self._paused = False |
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self._condition.notify_all() |
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|
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@contextlib.contextmanager |
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def fail(self): # pylint: disable=invalid-name |
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with self._condition: |
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self._fail = True |
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yield |
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with self._condition: |
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self._fail = False |
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|
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def _control(self): # pylint: disable=invalid-name |
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with self._condition: |
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if self._fail: |
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raise ValueError() |
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while self._paused: |
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self._condition.wait() |
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time.sleep(self._delay) |
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|
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def UnaryCall(self, request, unused_rpc_context): |
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response = self._test_pb2.SimpleResponse() |
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response.payload.payload_type = self._test_pb2.COMPRESSABLE |
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response.payload.payload_compressable = 'a' * request.response_size |
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self._control() |
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return response |
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|
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def StreamingOutputCall(self, request, unused_rpc_context): |
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for parameter in request.response_parameters: |
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response = self._test_pb2.StreamingOutputCallResponse() |
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response.payload.payload_type = self._test_pb2.COMPRESSABLE |
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response.payload.payload_compressable = 'a' * parameter.size |
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self._control() |
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yield response |
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|
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def StreamingInputCall(self, request_iter, unused_rpc_context): |
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response = self._test_pb2.StreamingInputCallResponse() |
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aggregated_payload_size = 0 |
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for request in request_iter: |
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aggregated_payload_size += len(request.payload.payload_compressable) |
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response.aggregated_payload_size = aggregated_payload_size |
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self._control() |
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return response |
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|
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def FullDuplexCall(self, request_iter, unused_rpc_context): |
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for request in request_iter: |
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for parameter in request.response_parameters: |
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response = self._test_pb2.StreamingOutputCallResponse() |
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response.payload.payload_type = self._test_pb2.COMPRESSABLE |
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response.payload.payload_compressable = 'a' * parameter.size |
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self._control() |
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yield response |
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|
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def HalfDuplexCall(self, request_iter, unused_rpc_context): |
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responses = [] |
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for request in request_iter: |
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for parameter in request.response_parameters: |
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response = self._test_pb2.StreamingOutputCallResponse() |
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response.payload.payload_type = self._test_pb2.COMPRESSABLE |
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response.payload.payload_compressable = 'a' * parameter.size |
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self._control() |
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responses.append(response) |
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for response in responses: |
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yield response |
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|
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|
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@contextlib.contextmanager |
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def _CreateService(test_pb2, delay): |
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"""Provides a servicer backend and a stub. |
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|
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The servicer is just the implementation |
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of the actual servicer passed to the face player of the python RPC |
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implementation; the two are detached. |
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|
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Non-zero delay puts a delay on each call to the servicer, representative of |
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communication latency. Timeout is the default timeout for the stub while |
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waiting for the service. |
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|
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Args: |
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test_pb2: The test_pb2 module generated by this test. |
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delay: Delay in seconds per response from the servicer. |
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|
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Yields: |
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A (servicer_methods, servicer, stub) three-tuple where servicer_methods is |
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the back-end of the service bound to the stub and the server and stub |
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are both activated and ready for use. |
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""" |
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servicer_methods = _ServicerMethods(test_pb2, delay) |
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class Servicer(getattr(test_pb2, SERVICER_IDENTIFIER)): |
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def UnaryCall(self, request, context): |
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return servicer_methods.UnaryCall(request, context) |
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|
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def StreamingOutputCall(self, request, context): |
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return servicer_methods.StreamingOutputCall(request, context) |
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|
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def StreamingInputCall(self, request_iter, context): |
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return servicer_methods.StreamingInputCall(request_iter, context) |
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|
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def FullDuplexCall(self, request_iter, context): |
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return servicer_methods.FullDuplexCall(request_iter, context) |
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|
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def HalfDuplexCall(self, request_iter, context): |
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return servicer_methods.HalfDuplexCall(request_iter, context) |
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|
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servicer = Servicer() |
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server = getattr( |
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test_pb2, SERVER_FACTORY_IDENTIFIER)(servicer, 0) |
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with server: |
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port = server.port() |
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stub = getattr(test_pb2, STUB_FACTORY_IDENTIFIER)('localhost', port) |
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with stub: |
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yield servicer_methods, stub, server |
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|
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def _streaming_input_request_iterator(test_pb2): |
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for _ in range(3): |
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request = test_pb2.StreamingInputCallRequest() |
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request.payload.payload_type = test_pb2.COMPRESSABLE |
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request.payload.payload_compressable = 'a' |
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yield request |
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|
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|
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def _streaming_output_request(test_pb2): |
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request = test_pb2.StreamingOutputCallRequest() |
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sizes = [1, 2, 3] |
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request.response_parameters.add(size=sizes[0], interval_us=0) |
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request.response_parameters.add(size=sizes[1], interval_us=0) |
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request.response_parameters.add(size=sizes[2], interval_us=0) |
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return request |
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|
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|
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def _full_duplex_request_iterator(test_pb2): |
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request = test_pb2.StreamingOutputCallRequest() |
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request.response_parameters.add(size=1, interval_us=0) |
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yield request |
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request = test_pb2.StreamingOutputCallRequest() |
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request.response_parameters.add(size=2, interval_us=0) |
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request.response_parameters.add(size=3, interval_us=0) |
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yield request |
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|
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|
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class PythonPluginTest(unittest.TestCase): |
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"""Test case for the gRPC Python protoc-plugin. |
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|
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While reading these tests, remember that the futures API |
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(`stub.method.async()`) only gives futures for the *non-streaming* responses, |
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else it behaves like its blocking cousin. |
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""" |
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|
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def setUp(self): |
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# Assume that the appropriate protoc and grpc_python_plugins are on the |
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# path. |
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protoc_command = 'protoc' |
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protoc_plugin_filename = distutils.spawn.find_executable( |
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'grpc_python_plugin') |
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test_proto_filename = pkg_resources.resource_filename( |
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'grpc_protoc_plugin', 'test.proto') |
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if not os.path.isfile(protoc_command): |
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# Assume that if we haven't built protoc that it's on the system. |
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protoc_command = 'protoc' |
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|
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# Ensure that the output directory exists. |
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self.outdir = tempfile.mkdtemp() |
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|
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# Invoke protoc with the plugin. |
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cmd = [ |
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protoc_command, |
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'--plugin=protoc-gen-python-grpc=%s' % protoc_plugin_filename, |
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'-I .', |
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'--python_out=%s' % self.outdir, |
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'--python-grpc_out=%s' % self.outdir, |
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os.path.basename(test_proto_filename), |
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] |
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subprocess.check_call(' '.join(cmd), shell=True, env=os.environ, |
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cwd=os.path.dirname(test_proto_filename)) |
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sys.path.append(self.outdir) |
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|
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def tearDown(self): |
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try: |
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shutil.rmtree(self.outdir) |
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except OSError as exc: |
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if exc.errno != errno.ENOENT: |
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raise |
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|
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# TODO(atash): Figure out which of these tests is hanging flakily with small |
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# probability. |
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|
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def testImportAttributes(self): |
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# check that we can access the generated module and its members. |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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self.assertIsNotNone(getattr(test_pb2, SERVICER_IDENTIFIER, None)) |
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self.assertIsNotNone(getattr(test_pb2, SERVER_IDENTIFIER, None)) |
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self.assertIsNotNone(getattr(test_pb2, STUB_IDENTIFIER, None)) |
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self.assertIsNotNone(getattr(test_pb2, SERVER_FACTORY_IDENTIFIER, None)) |
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self.assertIsNotNone(getattr(test_pb2, STUB_FACTORY_IDENTIFIER, None)) |
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|
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def testUpDown(self): |
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import test_pb2 |
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with _CreateService( |
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test_pb2, NO_DELAY) as (servicer, stub, unused_server): |
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request = test_pb2.SimpleRequest(response_size=13) |
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|
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def testUnaryCall(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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with _CreateService(test_pb2, NO_DELAY) as (methods, stub, unused_server): |
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timeout = 6 # TODO(issue 2039): LONG_TIMEOUT like the other methods. |
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request = test_pb2.SimpleRequest(response_size=13) |
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response = stub.UnaryCall(request, timeout) |
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expected_response = methods.UnaryCall(request, 'not a real RpcContext!') |
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self.assertEqual(expected_response, response) |
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|
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def testUnaryCallAsync(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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request = test_pb2.SimpleRequest(response_size=13) |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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# Check that the call does not block waiting for the server to respond. |
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with methods.pause(): |
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response_future = stub.UnaryCall.async(request, LONG_TIMEOUT) |
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response = response_future.result() |
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expected_response = methods.UnaryCall(request, 'not a real RpcContext!') |
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self.assertEqual(expected_response, response) |
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|
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def testUnaryCallAsyncExpired(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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request = test_pb2.SimpleRequest(response_size=13) |
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with methods.pause(): |
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response_future = stub.UnaryCall.async(request, SHORT_TIMEOUT) |
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with self.assertRaises(exceptions.ExpirationError): |
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response_future.result() |
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|
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@unittest.skip('TODO(atash,nathaniel): figure out why this flakily hangs ' |
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'forever and fix.') |
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def testUnaryCallAsyncCancelled(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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request = test_pb2.SimpleRequest(response_size=13) |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.pause(): |
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response_future = stub.UnaryCall.async(request, 1) |
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response_future.cancel() |
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self.assertTrue(response_future.cancelled()) |
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|
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def testUnaryCallAsyncFailed(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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request = test_pb2.SimpleRequest(response_size=13) |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.fail(): |
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response_future = stub.UnaryCall.async(request, LONG_TIMEOUT) |
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self.assertIsNotNone(response_future.exception()) |
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|
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def testStreamingOutputCall(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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request = _streaming_output_request(test_pb2) |
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with _CreateService(test_pb2, NO_DELAY) as (methods, stub, unused_server): |
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responses = stub.StreamingOutputCall(request, LONG_TIMEOUT) |
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expected_responses = methods.StreamingOutputCall( |
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request, 'not a real RpcContext!') |
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for expected_response, response in itertools.izip_longest( |
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expected_responses, responses): |
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self.assertEqual(expected_response, response) |
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|
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@unittest.skip('TODO(atash,nathaniel): figure out why this flakily hangs ' |
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'forever and fix.') |
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def testStreamingOutputCallExpired(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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request = _streaming_output_request(test_pb2) |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.pause(): |
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responses = stub.StreamingOutputCall(request, SHORT_TIMEOUT) |
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with self.assertRaises(exceptions.ExpirationError): |
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list(responses) |
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|
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@unittest.skip('TODO(atash,nathaniel): figure out why this flakily hangs ' |
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'forever and fix.') |
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def testStreamingOutputCallCancelled(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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request = _streaming_output_request(test_pb2) |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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unused_methods, stub, unused_server): |
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responses = stub.StreamingOutputCall(request, SHORT_TIMEOUT) |
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next(responses) |
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responses.cancel() |
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with self.assertRaises(future.CancelledError): |
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next(responses) |
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|
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@unittest.skip('TODO(atash,nathaniel): figure out why this times out ' |
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'instead of raising the proper error.') |
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def testStreamingOutputCallFailed(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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request = _streaming_output_request(test_pb2) |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.fail(): |
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responses = stub.StreamingOutputCall(request, 1) |
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self.assertIsNotNone(responses) |
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with self.assertRaises(exceptions.ServicerError): |
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next(responses) |
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|
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@unittest.skip('TODO(atash,nathaniel): figure out why this flakily hangs ' |
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'forever and fix.') |
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def testStreamingInputCall(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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with _CreateService(test_pb2, NO_DELAY) as (methods, stub, unused_server): |
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response = stub.StreamingInputCall( |
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_streaming_input_request_iterator(test_pb2), LONG_TIMEOUT) |
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expected_response = methods.StreamingInputCall( |
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_streaming_input_request_iterator(test_pb2), 'not a real RpcContext!') |
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self.assertEqual(expected_response, response) |
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|
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def testStreamingInputCallAsync(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.pause(): |
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response_future = stub.StreamingInputCall.async( |
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_streaming_input_request_iterator(test_pb2), LONG_TIMEOUT) |
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response = response_future.result() |
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expected_response = methods.StreamingInputCall( |
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_streaming_input_request_iterator(test_pb2), 'not a real RpcContext!') |
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self.assertEqual(expected_response, response) |
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|
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def testStreamingInputCallAsyncExpired(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.pause(): |
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response_future = stub.StreamingInputCall.async( |
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_streaming_input_request_iterator(test_pb2), SHORT_TIMEOUT) |
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with self.assertRaises(exceptions.ExpirationError): |
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response_future.result() |
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self.assertIsInstance( |
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response_future.exception(), exceptions.ExpirationError) |
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|
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def testStreamingInputCallAsyncCancelled(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.pause(): |
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timeout = 6 # TODO(issue 2039): LONG_TIMEOUT like the other methods. |
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response_future = stub.StreamingInputCall.async( |
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_streaming_input_request_iterator(test_pb2), timeout) |
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response_future.cancel() |
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self.assertTrue(response_future.cancelled()) |
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with self.assertRaises(future.CancelledError): |
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response_future.result() |
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|
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def testStreamingInputCallAsyncFailed(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.fail(): |
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response_future = stub.StreamingInputCall.async( |
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_streaming_input_request_iterator(test_pb2), SHORT_TIMEOUT) |
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self.assertIsNotNone(response_future.exception()) |
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|
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def testFullDuplexCall(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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with _CreateService(test_pb2, NO_DELAY) as (methods, stub, unused_server): |
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responses = stub.FullDuplexCall( |
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_full_duplex_request_iterator(test_pb2), LONG_TIMEOUT) |
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expected_responses = methods.FullDuplexCall( |
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_full_duplex_request_iterator(test_pb2), 'not a real RpcContext!') |
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for expected_response, response in itertools.izip_longest( |
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expected_responses, responses): |
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self.assertEqual(expected_response, response) |
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|
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@unittest.skip('TODO(atash,nathaniel): figure out why this flakily hangs ' |
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'forever and fix.') |
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def testFullDuplexCallExpired(self): |
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import test_pb2 # pylint: disable=g-import-not-at-top |
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request_iterator = _full_duplex_request_iterator(test_pb2) |
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with _CreateService(test_pb2, NO_DELAY) as ( |
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methods, stub, unused_server): |
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with methods.pause(): |
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responses = stub.FullDuplexCall(request_iterator, SHORT_TIMEOUT) |
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with self.assertRaises(exceptions.ExpirationError): |
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list(responses) |
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|
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@unittest.skip('TODO(atash,nathaniel): figure out why this flakily hangs ' |
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'forever and fix.') |
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def testFullDuplexCallCancelled(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2, NO_DELAY) as (methods, stub, unused_server): |
||||
request_iterator = _full_duplex_request_iterator(test_pb2) |
||||
responses = stub.FullDuplexCall(request_iterator, LONG_TIMEOUT) |
||||
next(responses) |
||||
responses.cancel() |
||||
with self.assertRaises(future.CancelledError): |
||||
next(responses) |
||||
|
||||
@unittest.skip('TODO(atash,nathaniel): figure out why this hangs forever ' |
||||
'and fix.') |
||||
def testFullDuplexCallFailed(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request_iterator = _full_duplex_request_iterator(test_pb2) |
||||
with _CreateService(test_pb2, NO_DELAY) as ( |
||||
methods, stub, unused_server): |
||||
with methods.fail(): |
||||
responses = stub.FullDuplexCall(request_iterator, LONG_TIMEOUT) |
||||
self.assertIsNotNone(responses) |
||||
with self.assertRaises(exceptions.ServicerError): |
||||
next(responses) |
||||
|
||||
@unittest.skip('TODO(atash,nathaniel): figure out why this flakily hangs ' |
||||
'forever and fix.') |
||||
def testHalfDuplexCall(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2, NO_DELAY) as ( |
||||
methods, stub, unused_server): |
||||
def half_duplex_request_iterator(): |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
request.response_parameters.add(size=1, interval_us=0) |
||||
yield request |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
request.response_parameters.add(size=2, interval_us=0) |
||||
request.response_parameters.add(size=3, interval_us=0) |
||||
yield request |
||||
responses = stub.HalfDuplexCall( |
||||
half_duplex_request_iterator(), LONG_TIMEOUT) |
||||
expected_responses = methods.HalfDuplexCall( |
||||
half_duplex_request_iterator(), 'not a real RpcContext!') |
||||
for check in itertools.izip_longest(expected_responses, responses): |
||||
expected_response, response = check |
||||
self.assertEqual(expected_response, response) |
||||
|
||||
def testHalfDuplexCallWedged(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
condition = threading.Condition() |
||||
wait_cell = [False] |
||||
@contextlib.contextmanager |
||||
def wait(): # pylint: disable=invalid-name |
||||
# Where's Python 3's 'nonlocal' statement when you need it? |
||||
with condition: |
||||
wait_cell[0] = True |
||||
yield |
||||
with condition: |
||||
wait_cell[0] = False |
||||
condition.notify_all() |
||||
def half_duplex_request_iterator(): |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
request.response_parameters.add(size=1, interval_us=0) |
||||
yield request |
||||
with condition: |
||||
while wait_cell[0]: |
||||
condition.wait() |
||||
with _CreateService(test_pb2, NO_DELAY) as (methods, stub, unused_server): |
||||
with wait(): |
||||
responses = stub.HalfDuplexCall( |
||||
half_duplex_request_iterator(), SHORT_TIMEOUT) |
||||
# half-duplex waits for the client to send all info |
||||
with self.assertRaises(exceptions.ExpirationError): |
||||
next(responses) |
||||
|
||||
|
||||
if __name__ == '__main__': |
||||
os.chdir(os.path.dirname(sys.argv[0])) |
||||
unittest.main(verbosity=2) |
||||
@ -0,0 +1,501 @@ |
||||
# 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. |
||||
|
||||
import argparse |
||||
import contextlib |
||||
import distutils.spawn |
||||
import errno |
||||
import itertools |
||||
import os |
||||
import pkg_resources |
||||
import shutil |
||||
import subprocess |
||||
import sys |
||||
import tempfile |
||||
import threading |
||||
import time |
||||
import unittest |
||||
|
||||
from grpc.beta import beta |
||||
from grpc.framework.foundation import future |
||||
from grpc.framework.interfaces.face import face |
||||
from grpc_test.framework.common import test_constants |
||||
|
||||
# Identifiers of entities we expect to find in the generated module. |
||||
SERVICER_IDENTIFIER = 'BetaTestServiceServicer' |
||||
STUB_IDENTIFIER = 'BetaTestServiceStub' |
||||
SERVER_FACTORY_IDENTIFIER = 'beta_create_TestService_server' |
||||
STUB_FACTORY_IDENTIFIER = 'beta_create_TestService_stub' |
||||
|
||||
|
||||
class _ServicerMethods(object): |
||||
|
||||
def __init__(self, test_pb2): |
||||
self._condition = threading.Condition() |
||||
self._paused = False |
||||
self._fail = False |
||||
self._test_pb2 = test_pb2 |
||||
|
||||
@contextlib.contextmanager |
||||
def pause(self): # pylint: disable=invalid-name |
||||
with self._condition: |
||||
self._paused = True |
||||
yield |
||||
with self._condition: |
||||
self._paused = False |
||||
self._condition.notify_all() |
||||
|
||||
@contextlib.contextmanager |
||||
def fail(self): # pylint: disable=invalid-name |
||||
with self._condition: |
||||
self._fail = True |
||||
yield |
||||
with self._condition: |
||||
self._fail = False |
||||
|
||||
def _control(self): # pylint: disable=invalid-name |
||||
with self._condition: |
||||
if self._fail: |
||||
raise ValueError() |
||||
while self._paused: |
||||
self._condition.wait() |
||||
|
||||
def UnaryCall(self, request, unused_rpc_context): |
||||
response = self._test_pb2.SimpleResponse() |
||||
response.payload.payload_type = self._test_pb2.COMPRESSABLE |
||||
response.payload.payload_compressable = 'a' * request.response_size |
||||
self._control() |
||||
return response |
||||
|
||||
def StreamingOutputCall(self, request, unused_rpc_context): |
||||
for parameter in request.response_parameters: |
||||
response = self._test_pb2.StreamingOutputCallResponse() |
||||
response.payload.payload_type = self._test_pb2.COMPRESSABLE |
||||
response.payload.payload_compressable = 'a' * parameter.size |
||||
self._control() |
||||
yield response |
||||
|
||||
def StreamingInputCall(self, request_iter, unused_rpc_context): |
||||
response = self._test_pb2.StreamingInputCallResponse() |
||||
aggregated_payload_size = 0 |
||||
for request in request_iter: |
||||
aggregated_payload_size += len(request.payload.payload_compressable) |
||||
response.aggregated_payload_size = aggregated_payload_size |
||||
self._control() |
||||
return response |
||||
|
||||
def FullDuplexCall(self, request_iter, unused_rpc_context): |
||||
for request in request_iter: |
||||
for parameter in request.response_parameters: |
||||
response = self._test_pb2.StreamingOutputCallResponse() |
||||
response.payload.payload_type = self._test_pb2.COMPRESSABLE |
||||
response.payload.payload_compressable = 'a' * parameter.size |
||||
self._control() |
||||
yield response |
||||
|
||||
def HalfDuplexCall(self, request_iter, unused_rpc_context): |
||||
responses = [] |
||||
for request in request_iter: |
||||
for parameter in request.response_parameters: |
||||
response = self._test_pb2.StreamingOutputCallResponse() |
||||
response.payload.payload_type = self._test_pb2.COMPRESSABLE |
||||
response.payload.payload_compressable = 'a' * parameter.size |
||||
self._control() |
||||
responses.append(response) |
||||
for response in responses: |
||||
yield response |
||||
|
||||
|
||||
@contextlib.contextmanager |
||||
def _CreateService(test_pb2): |
||||
"""Provides a servicer backend and a stub. |
||||
|
||||
The servicer is just the implementation of the actual servicer passed to the |
||||
face player of the python RPC implementation; the two are detached. |
||||
|
||||
Args: |
||||
test_pb2: The test_pb2 module generated by this test. |
||||
|
||||
Yields: |
||||
A (servicer_methods, stub) pair where servicer_methods is the back-end of |
||||
the service bound to the stub and and stub is the stub on which to invoke |
||||
RPCs. |
||||
""" |
||||
servicer_methods = _ServicerMethods(test_pb2) |
||||
|
||||
class Servicer(getattr(test_pb2, SERVICER_IDENTIFIER)): |
||||
|
||||
def UnaryCall(self, request, context): |
||||
return servicer_methods.UnaryCall(request, context) |
||||
|
||||
def StreamingOutputCall(self, request, context): |
||||
return servicer_methods.StreamingOutputCall(request, context) |
||||
|
||||
def StreamingInputCall(self, request_iter, context): |
||||
return servicer_methods.StreamingInputCall(request_iter, context) |
||||
|
||||
def FullDuplexCall(self, request_iter, context): |
||||
return servicer_methods.FullDuplexCall(request_iter, context) |
||||
|
||||
def HalfDuplexCall(self, request_iter, context): |
||||
return servicer_methods.HalfDuplexCall(request_iter, context) |
||||
|
||||
servicer = Servicer() |
||||
server = getattr(test_pb2, SERVER_FACTORY_IDENTIFIER)(servicer) |
||||
port = server.add_insecure_port('[::]:0') |
||||
server.start() |
||||
channel = beta.create_insecure_channel('localhost', port) |
||||
stub = getattr(test_pb2, STUB_FACTORY_IDENTIFIER)(channel) |
||||
yield servicer_methods, stub |
||||
server.stop(0) |
||||
|
||||
|
||||
def _streaming_input_request_iterator(test_pb2): |
||||
for _ in range(3): |
||||
request = test_pb2.StreamingInputCallRequest() |
||||
request.payload.payload_type = test_pb2.COMPRESSABLE |
||||
request.payload.payload_compressable = 'a' |
||||
yield request |
||||
|
||||
|
||||
def _streaming_output_request(test_pb2): |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
sizes = [1, 2, 3] |
||||
request.response_parameters.add(size=sizes[0], interval_us=0) |
||||
request.response_parameters.add(size=sizes[1], interval_us=0) |
||||
request.response_parameters.add(size=sizes[2], interval_us=0) |
||||
return request |
||||
|
||||
|
||||
def _full_duplex_request_iterator(test_pb2): |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
request.response_parameters.add(size=1, interval_us=0) |
||||
yield request |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
request.response_parameters.add(size=2, interval_us=0) |
||||
request.response_parameters.add(size=3, interval_us=0) |
||||
yield request |
||||
|
||||
|
||||
class PythonPluginTest(unittest.TestCase): |
||||
"""Test case for the gRPC Python protoc-plugin. |
||||
|
||||
While reading these tests, remember that the futures API |
||||
(`stub.method.future()`) only gives futures for the *response-unary* |
||||
methods and does not exist for response-streaming methods. |
||||
""" |
||||
|
||||
def setUp(self): |
||||
# Assume that the appropriate protoc and grpc_python_plugins are on the |
||||
# path. |
||||
protoc_command = 'protoc' |
||||
protoc_plugin_filename = distutils.spawn.find_executable( |
||||
'grpc_python_plugin') |
||||
test_proto_filename = pkg_resources.resource_filename( |
||||
'grpc_protoc_plugin', 'test.proto') |
||||
if not os.path.isfile(protoc_command): |
||||
# Assume that if we haven't built protoc that it's on the system. |
||||
protoc_command = 'protoc' |
||||
|
||||
# Ensure that the output directory exists. |
||||
self.outdir = tempfile.mkdtemp() |
||||
|
||||
# Invoke protoc with the plugin. |
||||
cmd = [ |
||||
protoc_command, |
||||
'--plugin=protoc-gen-python-grpc=%s' % protoc_plugin_filename, |
||||
'-I .', |
||||
'--python_out=%s' % self.outdir, |
||||
'--python-grpc_out=%s' % self.outdir, |
||||
os.path.basename(test_proto_filename), |
||||
] |
||||
subprocess.check_call(' '.join(cmd), shell=True, env=os.environ, |
||||
cwd=os.path.dirname(test_proto_filename)) |
||||
sys.path.append(self.outdir) |
||||
|
||||
def tearDown(self): |
||||
try: |
||||
shutil.rmtree(self.outdir) |
||||
except OSError as exc: |
||||
if exc.errno != errno.ENOENT: |
||||
raise |
||||
|
||||
def testImportAttributes(self): |
||||
# check that we can access the generated module and its members. |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
self.assertIsNotNone(getattr(test_pb2, SERVICER_IDENTIFIER, None)) |
||||
self.assertIsNotNone(getattr(test_pb2, STUB_IDENTIFIER, None)) |
||||
self.assertIsNotNone(getattr(test_pb2, SERVER_FACTORY_IDENTIFIER, None)) |
||||
self.assertIsNotNone(getattr(test_pb2, STUB_FACTORY_IDENTIFIER, None)) |
||||
|
||||
def testUpDown(self): |
||||
import test_pb2 |
||||
with _CreateService(test_pb2) as (servicer, stub): |
||||
request = test_pb2.SimpleRequest(response_size=13) |
||||
|
||||
def testUnaryCall(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
request = test_pb2.SimpleRequest(response_size=13) |
||||
response = stub.UnaryCall(request, test_constants.LONG_TIMEOUT) |
||||
expected_response = methods.UnaryCall(request, 'not a real context!') |
||||
self.assertEqual(expected_response, response) |
||||
|
||||
def testUnaryCallFuture(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request = test_pb2.SimpleRequest(response_size=13) |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
# Check that the call does not block waiting for the server to respond. |
||||
with methods.pause(): |
||||
response_future = stub.UnaryCall.future( |
||||
request, test_constants.LONG_TIMEOUT) |
||||
response = response_future.result() |
||||
expected_response = methods.UnaryCall(request, 'not a real RpcContext!') |
||||
self.assertEqual(expected_response, response) |
||||
|
||||
def testUnaryCallFutureExpired(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
request = test_pb2.SimpleRequest(response_size=13) |
||||
with methods.pause(): |
||||
response_future = stub.UnaryCall.future( |
||||
request, test_constants.SHORT_TIMEOUT) |
||||
with self.assertRaises(face.ExpirationError): |
||||
response_future.result() |
||||
|
||||
def testUnaryCallFutureCancelled(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request = test_pb2.SimpleRequest(response_size=13) |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.pause(): |
||||
response_future = stub.UnaryCall.future(request, 1) |
||||
response_future.cancel() |
||||
self.assertTrue(response_future.cancelled()) |
||||
|
||||
def testUnaryCallFutureFailed(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request = test_pb2.SimpleRequest(response_size=13) |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.fail(): |
||||
response_future = stub.UnaryCall.future( |
||||
request, test_constants.LONG_TIMEOUT) |
||||
self.assertIsNotNone(response_future.exception()) |
||||
|
||||
def testStreamingOutputCall(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request = _streaming_output_request(test_pb2) |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
responses = stub.StreamingOutputCall( |
||||
request, test_constants.LONG_TIMEOUT) |
||||
expected_responses = methods.StreamingOutputCall( |
||||
request, 'not a real RpcContext!') |
||||
for expected_response, response in itertools.izip_longest( |
||||
expected_responses, responses): |
||||
self.assertEqual(expected_response, response) |
||||
|
||||
def testStreamingOutputCallExpired(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request = _streaming_output_request(test_pb2) |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.pause(): |
||||
responses = stub.StreamingOutputCall( |
||||
request, test_constants.SHORT_TIMEOUT) |
||||
with self.assertRaises(face.ExpirationError): |
||||
list(responses) |
||||
|
||||
def testStreamingOutputCallCancelled(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request = _streaming_output_request(test_pb2) |
||||
with _CreateService(test_pb2) as (unused_methods, stub): |
||||
responses = stub.StreamingOutputCall( |
||||
request, test_constants.LONG_TIMEOUT) |
||||
next(responses) |
||||
responses.cancel() |
||||
with self.assertRaises(face.CancellationError): |
||||
next(responses) |
||||
|
||||
def testStreamingOutputCallFailed(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request = _streaming_output_request(test_pb2) |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.fail(): |
||||
responses = stub.StreamingOutputCall(request, 1) |
||||
self.assertIsNotNone(responses) |
||||
with self.assertRaises(face.RemoteError): |
||||
next(responses) |
||||
|
||||
def testStreamingInputCall(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
response = stub.StreamingInputCall( |
||||
_streaming_input_request_iterator(test_pb2), |
||||
test_constants.LONG_TIMEOUT) |
||||
expected_response = methods.StreamingInputCall( |
||||
_streaming_input_request_iterator(test_pb2), 'not a real RpcContext!') |
||||
self.assertEqual(expected_response, response) |
||||
|
||||
def testStreamingInputCallFuture(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.pause(): |
||||
response_future = stub.StreamingInputCall.future( |
||||
_streaming_input_request_iterator(test_pb2), |
||||
test_constants.LONG_TIMEOUT) |
||||
response = response_future.result() |
||||
expected_response = methods.StreamingInputCall( |
||||
_streaming_input_request_iterator(test_pb2), 'not a real RpcContext!') |
||||
self.assertEqual(expected_response, response) |
||||
|
||||
def testStreamingInputCallFutureExpired(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.pause(): |
||||
response_future = stub.StreamingInputCall.future( |
||||
_streaming_input_request_iterator(test_pb2), |
||||
test_constants.SHORT_TIMEOUT) |
||||
with self.assertRaises(face.ExpirationError): |
||||
response_future.result() |
||||
self.assertIsInstance( |
||||
response_future.exception(), face.ExpirationError) |
||||
|
||||
def testStreamingInputCallFutureCancelled(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.pause(): |
||||
response_future = stub.StreamingInputCall.future( |
||||
_streaming_input_request_iterator(test_pb2), |
||||
test_constants.LONG_TIMEOUT) |
||||
response_future.cancel() |
||||
self.assertTrue(response_future.cancelled()) |
||||
with self.assertRaises(future.CancelledError): |
||||
response_future.result() |
||||
|
||||
def testStreamingInputCallFutureFailed(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.fail(): |
||||
response_future = stub.StreamingInputCall.future( |
||||
_streaming_input_request_iterator(test_pb2), |
||||
test_constants.LONG_TIMEOUT) |
||||
self.assertIsNotNone(response_future.exception()) |
||||
|
||||
def testFullDuplexCall(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
responses = stub.FullDuplexCall( |
||||
_full_duplex_request_iterator(test_pb2), test_constants.LONG_TIMEOUT) |
||||
expected_responses = methods.FullDuplexCall( |
||||
_full_duplex_request_iterator(test_pb2), 'not a real RpcContext!') |
||||
for expected_response, response in itertools.izip_longest( |
||||
expected_responses, responses): |
||||
self.assertEqual(expected_response, response) |
||||
|
||||
def testFullDuplexCallExpired(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request_iterator = _full_duplex_request_iterator(test_pb2) |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.pause(): |
||||
responses = stub.FullDuplexCall( |
||||
request_iterator, test_constants.SHORT_TIMEOUT) |
||||
with self.assertRaises(face.ExpirationError): |
||||
list(responses) |
||||
|
||||
def testFullDuplexCallCancelled(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
request_iterator = _full_duplex_request_iterator(test_pb2) |
||||
responses = stub.FullDuplexCall( |
||||
request_iterator, test_constants.LONG_TIMEOUT) |
||||
next(responses) |
||||
responses.cancel() |
||||
with self.assertRaises(face.CancellationError): |
||||
next(responses) |
||||
|
||||
def testFullDuplexCallFailed(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
request_iterator = _full_duplex_request_iterator(test_pb2) |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with methods.fail(): |
||||
responses = stub.FullDuplexCall( |
||||
request_iterator, test_constants.LONG_TIMEOUT) |
||||
self.assertIsNotNone(responses) |
||||
with self.assertRaises(face.RemoteError): |
||||
next(responses) |
||||
|
||||
def testHalfDuplexCall(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
def half_duplex_request_iterator(): |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
request.response_parameters.add(size=1, interval_us=0) |
||||
yield request |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
request.response_parameters.add(size=2, interval_us=0) |
||||
request.response_parameters.add(size=3, interval_us=0) |
||||
yield request |
||||
responses = stub.HalfDuplexCall( |
||||
half_duplex_request_iterator(), test_constants.LONG_TIMEOUT) |
||||
expected_responses = methods.HalfDuplexCall( |
||||
half_duplex_request_iterator(), 'not a real RpcContext!') |
||||
for check in itertools.izip_longest(expected_responses, responses): |
||||
expected_response, response = check |
||||
self.assertEqual(expected_response, response) |
||||
|
||||
def testHalfDuplexCallWedged(self): |
||||
import test_pb2 # pylint: disable=g-import-not-at-top |
||||
condition = threading.Condition() |
||||
wait_cell = [False] |
||||
@contextlib.contextmanager |
||||
def wait(): # pylint: disable=invalid-name |
||||
# Where's Python 3's 'nonlocal' statement when you need it? |
||||
with condition: |
||||
wait_cell[0] = True |
||||
yield |
||||
with condition: |
||||
wait_cell[0] = False |
||||
condition.notify_all() |
||||
def half_duplex_request_iterator(): |
||||
request = test_pb2.StreamingOutputCallRequest() |
||||
request.response_parameters.add(size=1, interval_us=0) |
||||
yield request |
||||
with condition: |
||||
while wait_cell[0]: |
||||
condition.wait() |
||||
with _CreateService(test_pb2) as (methods, stub): |
||||
with wait(): |
||||
responses = stub.HalfDuplexCall( |
||||
half_duplex_request_iterator(), test_constants.SHORT_TIMEOUT) |
||||
# half-duplex waits for the client to send all info |
||||
with self.assertRaises(face.ExpirationError): |
||||
next(responses) |
||||
|
||||
|
||||
if __name__ == '__main__': |
||||
os.chdir(os.path.dirname(sys.argv[0])) |
||||
unittest.main(verbosity=2) |
||||
Loading…
Reference in new issue