72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
# 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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"""GS"""
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import os
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import ctypes
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import sys
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import inspect
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import warnings
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import types
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import tensorflow as tf
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def _load_library(filename):
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"""_load_library"""
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f = inspect.getfile(sys._getframe(1)) # pylint: disable=protected-access
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# Construct filename
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f = os.path.join(os.path.dirname(f), filename)
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filenames = [f]
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# Add datapath to load if en var is set, used for running tests where shared
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# libraries are built in a different path
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datapath = os.environ.get("TFIO_DATAPATH")
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if datapath is not None:
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# Build filename from:
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# `datapath` + `tensorflow_io_package` + `package_name` + `relpath_to_library`
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rootpath = os.path.dirname(sys.modules["tensorflow_io_gcs_filesystem"].__file__)
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filename = sys.modules[__name__].__file__
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f = os.path.join(
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datapath,
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"tensorflow_io_gcs_filesystem",
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os.path.relpath(os.path.dirname(filename), rootpath),
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os.path.relpath(f, os.path.dirname(filename)),
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)
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filenames.append(f)
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# Function to load the library, return True if file system library is loaded
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load_fn = lambda f: tf.experimental.register_filesystem_plugin(f) is None
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# Try to load all paths for file, fail if none succeed
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errs = []
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for f in filenames:
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try:
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l = load_fn(f)
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if l is not None:
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return l
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except (tf.errors.NotFoundError, OSError) as e:
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errs.append(str(e))
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raise NotImplementedError(
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"unable to open file: "
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+ f"{filename}, from paths: {filenames}\ncaused by: {errs}"
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)
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try:
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plugin_gs = _load_library("libtensorflow_io_gcs_filesystem.so")
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except NotImplementedError as e:
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warnings.warn(f"file system plugin for gs are not loaded: {e}")
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