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Diffstat (limited to 'src/python/grpcio/grpc/framework/core/_expiration.py')
| -rw-r--r-- | src/python/grpcio/grpc/framework/core/_expiration.py | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/src/python/grpcio/grpc/framework/core/_expiration.py b/src/python/grpcio/grpc/framework/core/_expiration.py deleted file mode 100644 index ded0ab6bce..0000000000 --- a/src/python/grpcio/grpc/framework/core/_expiration.py +++ /dev/null @@ -1,154 +0,0 @@ -# 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. - -"""State and behavior for operation expiration.""" - -import time - -from grpc.framework.core import _interfaces -from grpc.framework.core import _utilities -from grpc.framework.foundation import later -from grpc.framework.interfaces.base import base - - -class _ExpirationManager(_interfaces.ExpirationManager): - """An implementation of _interfaces.ExpirationManager.""" - - def __init__( - self, commencement, timeout, maximum_timeout, lock, termination_manager, - transmission_manager): - """Constructor. - - Args: - commencement: The time in seconds since the epoch at which the operation - began. - timeout: A length of time in seconds to allow for the operation to run. - maximum_timeout: The maximum length of time in seconds to allow for the - operation to run despite what is requested via this object's - change_timout method. - lock: The operation-wide lock. - termination_manager: The _interfaces.TerminationManager for the operation. - transmission_manager: The _interfaces.TransmissionManager for the - operation. - """ - self._lock = lock - self._termination_manager = termination_manager - self._transmission_manager = transmission_manager - self._commencement = commencement - self._maximum_timeout = maximum_timeout - - self._timeout = timeout - self._deadline = commencement + timeout - self._index = None - self._future = None - - def _expire(self, index): - def expire(): - with self._lock: - if self._future is not None and index == self._index: - self._future = None - self._termination_manager.expire() - self._transmission_manager.abort( - _utilities.Outcome(base.Outcome.Kind.EXPIRED, None, None)) - return expire - - def start(self): - self._index = 0 - self._future = later.later(self._timeout, self._expire(0)) - - def change_timeout(self, timeout): - if self._future is not None and timeout != self._timeout: - self._future.cancel() - new_timeout = min(timeout, self._maximum_timeout) - new_index = self._index + 1 - self._timeout = new_timeout - self._deadline = self._commencement + new_timeout - self._index = new_index - delay = self._deadline - time.time() - self._future = later.later(delay, self._expire(new_index)) - if new_timeout != timeout: - self._transmission_manager.timeout(new_timeout) - - def deadline(self): - return self._deadline - - def terminate(self): - if self._future: - self._future.cancel() - self._future = None - self._deadline_index = None - - -def invocation_expiration_manager( - timeout, lock, termination_manager, transmission_manager): - """Creates an _interfaces.ExpirationManager appropriate for front-side use. - - Args: - timeout: A length of time in seconds to allow for the operation to run. - lock: The operation-wide lock. - termination_manager: The _interfaces.TerminationManager for the operation. - transmission_manager: The _interfaces.TransmissionManager for the - operation. - - Returns: - An _interfaces.ExpirationManager appropriate for invocation-side use. - """ - expiration_manager = _ExpirationManager( - time.time(), timeout, timeout, lock, termination_manager, - transmission_manager) - expiration_manager.start() - return expiration_manager - - -def service_expiration_manager( - timeout, default_timeout, maximum_timeout, lock, termination_manager, - transmission_manager): - """Creates an _interfaces.ExpirationManager appropriate for back-side use. - - Args: - timeout: A length of time in seconds to allow for the operation to run. May - be None in which case default_timeout will be used. - default_timeout: The default length of time in seconds to allow for the - operation to run if the front-side customer has not specified such a value - (or if the value they specified is not yet known). - maximum_timeout: The maximum length of time in seconds to allow for the - operation to run. - lock: The operation-wide lock. - termination_manager: The _interfaces.TerminationManager for the operation. - transmission_manager: The _interfaces.TransmissionManager for the - operation. - - Returns: - An _interfaces.ExpirationManager appropriate for service-side use. - """ - expiration_manager = _ExpirationManager( - time.time(), default_timeout if timeout is None else timeout, - maximum_timeout, lock, termination_manager, transmission_manager) - expiration_manager.start() - return expiration_manager |