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# Copyright 2017 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Tests for tf.GrpcServer."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.python.client import session
from tensorflow.python.framework import errors_impl
from tensorflow.python.ops import variables
from tensorflow.python.platform import test
from tensorflow.python.training import server_lib
class SameVariablesClearContainerTest(test.TestCase):
# Verifies behavior of tf.Session.reset() with multiple containers using
# default container names as defined by the target name.
# TODO(b/34465411): Starting multiple servers with different configurations
# in the same test is flaky. Move this test case back into
# "server_lib_test.py" when this is no longer the case.
def testSameVariablesClearContainer(self):
# Starts two servers with different names so they map to different
# resource "containers".
server0 = server_lib.Server(
{
"local0": ["localhost:0"]
}, protocol="grpc", start=True)
server1 = server_lib.Server(
{
"local1": ["localhost:0"]
}, protocol="grpc", start=True)
# Creates a graph with 2 variables.
v0 = variables.Variable(1.0, name="v0")
v1 = variables.Variable(2.0, name="v0")
# Initializes the variables. Verifies that the values are correct.
sess_0 = session.Session(server0.target)
sess_1 = session.Session(server1.target)
sess_0.run(v0.initializer)
sess_1.run(v1.initializer)
self.assertAllEqual(1.0, sess_0.run(v0))
self.assertAllEqual(2.0, sess_1.run(v1))
# Resets container "local0". Verifies that v0 is no longer initialized.
session.Session.reset(server0.target, ["local0"])
sess = session.Session(server0.target)
with self.assertRaises(errors_impl.FailedPreconditionError):
sess.run(v0)
# Reinitializes v0 for the following test.
sess.run(v0.initializer)
# Verifies that v1 is still valid.
self.assertAllEqual(2.0, sess_1.run(v1))
# Resets container "local1". Verifies that v1 is no longer initialized.
session.Session.reset(server1.target, ["local1"])
sess = session.Session(server1.target)
with self.assertRaises(errors_impl.FailedPreconditionError):
sess.run(v1)
# Verifies that v0 is still valid.
sess = session.Session(server0.target)
self.assertAllEqual(1.0, sess.run(v0))
if __name__ == "__main__":
test.main()
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