diff options
Diffstat (limited to 'src/python/grpcio_tests/tests/unit/_cython/test_utilities.py')
-rw-r--r-- | src/python/grpcio_tests/tests/unit/_cython/test_utilities.py | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py b/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py new file mode 100644 index 0000000000..6280ce74c4 --- /dev/null +++ b/src/python/grpcio_tests/tests/unit/_cython/test_utilities.py @@ -0,0 +1,66 @@ +# 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 threading + +from grpc._cython import cygrpc + + +class SimpleFuture(object): + """A simple future mechanism.""" + + def __init__(self, function, *args, **kwargs): + def wrapped_function(): + try: + self._result = function(*args, **kwargs) + except Exception as error: + self._error = error + self._result = None + self._error = None + self._thread = threading.Thread(target=wrapped_function) + self._thread.start() + + def result(self): + """The resulting value of this future. + + Re-raises any exceptions. + """ + self._thread.join() + if self._error: + # TODO(atash): re-raise exceptions in a way that preserves tracebacks + raise self._error + return self._result + + +class CompletionQueuePollFuture(SimpleFuture): + + def __init__(self, completion_queue, deadline): + super(CompletionQueuePollFuture, self).__init__( + lambda: completion_queue.poll(deadline)) + |