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| # Copyright 2021 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. | |
| # ============================================================================== | |
| """Helpers for TensorBoard main module.""" | |
| import os | |
| import sys | |
| import absl.logging | |
| from tensorboard.compat import tf | |
| _TBDEV_SHUTDOWN_MESSAGE = """\ | |
| ====================================================================== | |
| ERROR: The `tensorboard dev` command is no longer available. | |
| TensorBoard.dev has been shut down. For further information, | |
| see the FAQ at <https://tensorboard.dev/>. | |
| ====================================================================== | |
| """ | |
| def global_init(): | |
| """Modifies the global environment for running TensorBoard as main. | |
| This functions changes global state in the Python process, so it should | |
| not be called from library routines. | |
| """ | |
| # TF versions prior to 1.15.0 included default GCS filesystem caching logic | |
| # that interacted pathologically with the pattern of reads used by TensorBoard | |
| # for logdirs. See: https://github.com/tensorflow/tensorboard/issues/1225 | |
| # The problematic behavior was fixed in 1.15.0 by | |
| # https://github.com/tensorflow/tensorflow/commit/e43b94649d3e1ac5d538e4eca9166b899511d681 | |
| # but for older versions of TF, we avoid a regression by setting this env var to | |
| # disable the cache, which must be done before the first import of tensorflow. | |
| os.environ["GCS_READ_CACHE_DISABLED"] = "1" | |
| if getattr(tf, "__version__", "stub") == "stub": | |
| print( | |
| "TensorFlow installation not found - running with reduced feature set.", | |
| file=sys.stderr, | |
| ) | |
| # Only emit log messages at WARNING and above by default to reduce spam. | |
| absl.logging.set_verbosity(absl.logging.WARNING) | |
| # Intercept attempts to invoke `tensorboard dev` and print turndown message. | |
| if sys.argv[1:] and sys.argv[1] == "dev": | |
| sys.stderr.write(_TBDEV_SHUTDOWN_MESSAGE) | |
| sys.stderr.flush() | |
| sys.exit(1) | |