54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2021 Google Inc. 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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"""Helper functions for executing binaries."""
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from __future__ import absolute_import
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from __future__ import print_function
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from __future__ import division
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from __future__ import unicode_literals
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import subprocess
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from gslib import exception
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def ExecuteExternalCommand(command_and_flags):
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"""Runs external terminal command.
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Args:
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command_and_flags (List[str]): Ordered command and flag strings.
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Returns:
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(stdout (str|None), stderr (str|None)) from running command.
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Raises:
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OSError for any issues running the command.
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"""
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command_process = subprocess.Popen(command_and_flags,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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command_stdout, command_stderr = command_process.communicate()
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# Python 3 outputs bytes from communicate() by default.
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if command_stdout is not None and not isinstance(command_stdout, str):
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command_stdout = command_stdout.decode()
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if command_stderr is not None and not isinstance(command_stderr, str):
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command_stderr = command_stderr.decode()
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if command_process.returncode != 0:
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raise exception.ExternalBinaryError(command_stderr)
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return command_stdout, command_stderr
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