| # Copyright 2015, Google Inc. |
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| # |
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| # * Redistributions in binary form must reproduce the above |
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| # in the documentation and/or other materials provided with the |
| # distribution. |
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| # 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 |
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| |
| """Tests of grpc.beta.utilities.""" |
| |
| import threading |
| import time |
| import unittest |
| |
| from grpc._adapter import _low |
| from grpc._adapter import _types |
| from grpc.beta import implementations |
| from grpc.beta import utilities |
| from grpc.framework.foundation import future |
| from tests.unit.framework.common import test_constants |
| |
| |
| def _drive_completion_queue(completion_queue): |
| while True: |
| event = completion_queue.next(time.time() + 24 * 60 * 60) |
| if event.type == _types.EventType.QUEUE_SHUTDOWN: |
| break |
| |
| |
| class _Callback(object): |
| |
| def __init__(self): |
| self._condition = threading.Condition() |
| self._value = None |
| |
| def accept_value(self, value): |
| with self._condition: |
| self._value = value |
| self._condition.notify_all() |
| |
| def block_until_called(self): |
| with self._condition: |
| while self._value is None: |
| self._condition.wait() |
| return self._value |
| |
| |
| class ChannelConnectivityTest(unittest.TestCase): |
| |
| def test_lonely_channel_connectivity(self): |
| channel = implementations.insecure_channel('localhost', 12345) |
| callback = _Callback() |
| |
| ready_future = utilities.channel_ready_future(channel) |
| ready_future.add_done_callback(callback.accept_value) |
| with self.assertRaises(future.TimeoutError): |
| ready_future.result(test_constants.SHORT_TIMEOUT) |
| self.assertFalse(ready_future.cancelled()) |
| self.assertFalse(ready_future.done()) |
| self.assertTrue(ready_future.running()) |
| ready_future.cancel() |
| value_passed_to_callback = callback.block_until_called() |
| self.assertIs(ready_future, value_passed_to_callback) |
| self.assertTrue(ready_future.cancelled()) |
| self.assertTrue(ready_future.done()) |
| self.assertFalse(ready_future.running()) |
| |
| def test_immediately_connectable_channel_connectivity(self): |
| server_completion_queue = _low.CompletionQueue() |
| server = _low.Server(server_completion_queue, []) |
| port = server.add_http2_port('[::]:0') |
| server.start() |
| server_completion_queue_thread = threading.Thread( |
| target=_drive_completion_queue, args=(server_completion_queue,)) |
| server_completion_queue_thread.start() |
| channel = implementations.insecure_channel('localhost', port) |
| callback = _Callback() |
| |
| try: |
| ready_future = utilities.channel_ready_future(channel) |
| ready_future.add_done_callback(callback.accept_value) |
| self.assertIsNone( |
| ready_future.result(test_constants.SHORT_TIMEOUT)) |
| value_passed_to_callback = callback.block_until_called() |
| self.assertIs(ready_future, value_passed_to_callback) |
| self.assertFalse(ready_future.cancelled()) |
| self.assertTrue(ready_future.done()) |
| self.assertFalse(ready_future.running()) |
| # Cancellation after maturity has no effect. |
| ready_future.cancel() |
| self.assertFalse(ready_future.cancelled()) |
| self.assertTrue(ready_future.done()) |
| self.assertFalse(ready_future.running()) |
| finally: |
| ready_future.cancel() |
| server.shutdown() |
| server_completion_queue.shutdown() |
| server_completion_queue_thread.join() |
| |
| |
| if __name__ == '__main__': |
| unittest.main(verbosity=2) |