6d5d3994ea
This patch adds executil.BaseCommand, which contains some scaffolding for building generic and simple CLI commands. Also, executil.py contains a couple of predefined commands, such as Python, Shell, Powershell etc. fileexecutils, as well as userdatautils, were rewritten to use the new command framework instead, which greatly increases usability and simplifies cross platform issues. Change-Id: Ifcd91da95a272ef68d56491f90bc213826eb7679
60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
# Copyright 2014 Cloudbase Solutions Srl
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import contextlib
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import os
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import shutil
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import tempfile
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__all__ = (
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'create_tempfile',
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'create_tempdir',
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)
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@contextlib.contextmanager
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def create_tempdir():
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"""Create a temporary directory.
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This is a context manager, which creates a new temporary
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directory and removes it when exiting from the context manager
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block.
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"""
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tempdir = tempfile.mkdtemp(prefix="cloudbaseinit-tests")
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try:
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yield tempdir
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finally:
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shutil.rmtree(tempdir)
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@contextlib.contextmanager
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def create_tempfile(content=None):
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"""Create a temporary file.
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This is a context manager, which uses `create_tempdir` to obtain a
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temporary directory, where the file will be placed.
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:param content:
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Additionally, a string which will be written
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in the new file.
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"""
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with create_tempdir() as temp:
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fd, path = tempfile.mkstemp(dir=temp)
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os.close(fd)
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if content:
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with open(path, 'w') as stream:
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stream.write(content)
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yield path
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