| # Copyright 2015-2016, 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: |
| # |
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| # 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 |
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| |
| """Utilities for creating Base-layer objects for use in Face-layer tests.""" |
| |
| import abc |
| |
| import six |
| |
| # interfaces is referenced from specification in this module. |
| from grpc.framework.base import util as _base_util |
| from grpc.framework.base import implementations |
| from grpc.framework.base import in_memory |
| from grpc.framework.base import interfaces # pylint: disable=unused-import |
| from grpc.framework.foundation import logging_pool |
| |
| _POOL_SIZE_LIMIT = 5 |
| |
| _MAXIMUM_TIMEOUT = 90 |
| |
| |
| class LinkedPair(six.with_metaclass(abc.ABCMeta)): |
| """A Front and Back that are linked to one another. |
| |
| Attributes: |
| front: An interfaces.Front. |
| back: An interfaces.Back. |
| """ |
| |
| @abc.abstractmethod |
| def shut_down(self): |
| """Shuts down this object and releases its resources.""" |
| raise NotImplementedError() |
| |
| |
| class _LinkedPair(LinkedPair): |
| |
| def __init__(self, front, back, pools): |
| self.front = front |
| self.back = back |
| self._pools = pools |
| |
| def shut_down(self): |
| _base_util.wait_for_idle(self.front) |
| _base_util.wait_for_idle(self.back) |
| |
| for pool in self._pools: |
| pool.shutdown(wait=True) |
| |
| |
| def linked_pair(servicer, default_timeout): |
| """Creates a Server and Stub linked together for use.""" |
| link_pool = logging_pool.pool(_POOL_SIZE_LIMIT) |
| front_work_pool = logging_pool.pool(_POOL_SIZE_LIMIT) |
| front_transmission_pool = logging_pool.pool(_POOL_SIZE_LIMIT) |
| front_utility_pool = logging_pool.pool(_POOL_SIZE_LIMIT) |
| back_work_pool = logging_pool.pool(_POOL_SIZE_LIMIT) |
| back_transmission_pool = logging_pool.pool(_POOL_SIZE_LIMIT) |
| back_utility_pool = logging_pool.pool(_POOL_SIZE_LIMIT) |
| pools = ( |
| link_pool, |
| front_work_pool, front_transmission_pool, front_utility_pool, |
| back_work_pool, back_transmission_pool, back_utility_pool) |
| |
| link = in_memory.Link(link_pool) |
| front = implementations.front_link( |
| front_work_pool, front_transmission_pool, front_utility_pool) |
| back = implementations.back_link( |
| servicer, back_work_pool, back_transmission_pool, back_utility_pool, |
| default_timeout, _MAXIMUM_TIMEOUT) |
| front.join_rear_link(link) |
| link.join_fore_link(front) |
| back.join_fore_link(link) |
| link.join_rear_link(back) |
| |
| return _LinkedPair(front, back, pools) |