64 lines
2.5 KiB
Python
64 lines
2.5 KiB
Python
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# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ==============================================================================
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"""Helpers for TensorBoard main module."""
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import os
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import sys
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import absl.logging
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from tensorboard.compat import tf
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_TBDEV_SHUTDOWN_MESSAGE = """\
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======================================================================
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ERROR: The `tensorboard dev` command is no longer available.
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TensorBoard.dev has been shut down. For further information,
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see the FAQ at <https://tensorboard.dev/>.
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======================================================================
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"""
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def global_init():
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"""Modifies the global environment for running TensorBoard as main.
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This functions changes global state in the Python process, so it should
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not be called from library routines.
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"""
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# TF versions prior to 1.15.0 included default GCS filesystem caching logic
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# that interacted pathologically with the pattern of reads used by TensorBoard
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# for logdirs. See: https://github.com/tensorflow/tensorboard/issues/1225
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# The problematic behavior was fixed in 1.15.0 by
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# https://github.com/tensorflow/tensorflow/commit/e43b94649d3e1ac5d538e4eca9166b899511d681
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# but for older versions of TF, we avoid a regression by setting this env var to
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# disable the cache, which must be done before the first import of tensorflow.
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os.environ["GCS_READ_CACHE_DISABLED"] = "1"
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if getattr(tf, "__version__", "stub") == "stub":
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print(
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"TensorFlow installation not found - running with reduced feature set.",
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file=sys.stderr,
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)
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# Only emit log messages at WARNING and above by default to reduce spam.
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absl.logging.set_verbosity(absl.logging.WARNING)
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# Intercept attempts to invoke `tensorboard dev` and print turndown message.
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if sys.argv[1:] and sys.argv[1] == "dev":
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sys.stderr.write(_TBDEV_SHUTDOWN_MESSAGE)
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sys.stderr.flush()
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sys.exit(1)
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