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4d3d9f64b9
Closes: #6890 Some remarks, - `# coding ... utf-8` statements are not needed - isdigit on strings instead of a try-catch. - Default opening mode is read, so we can do `open()` without the `'r'` everywhere - Removed inheritinng from `object` class, it isn't necessary in python3. - `super(ClassName, self)` can now be replaced with `super()` - Use of itertools and `chain` on a couple places dealing with sets. - Used the operator module instead of lambdas when warranted `itemgetter(0)` instead of `lambda x: x[0]` `attrgetter('name')` instead of `lambda x: x.name` - `sorted` returns a list, so no need to use `list(sorted(...))` - Removed `dict()` using dictionary comprehensions whenever possible - Attempted to remove python3.2 support Signed-off-by: alexrecuenco <alejandrogonzalezrecuenco@gmail.com>
70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
import contextlib
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import os
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from compose.config.config import ConfigDetails
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from compose.config.config import ConfigFile
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from compose.config.config import load
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BUSYBOX_IMAGE_NAME = 'busybox'
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BUSYBOX_DEFAULT_TAG = '1.31.0-uclibc'
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BUSYBOX_IMAGE_WITH_TAG = '{}:{}'.format(BUSYBOX_IMAGE_NAME, BUSYBOX_DEFAULT_TAG)
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def build_config(contents, **kwargs):
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return load(build_config_details(contents, **kwargs))
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def build_config_details(contents, working_dir='working_dir', filename='filename.yml'):
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return ConfigDetails(
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working_dir,
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[ConfigFile(filename, contents)],
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)
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def create_custom_host_file(client, filename, content):
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dirname = os.path.dirname(filename)
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container = client.create_container(
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BUSYBOX_IMAGE_WITH_TAG,
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['sh', '-c', 'echo -n "{}" > {}'.format(content, filename)],
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volumes={dirname: {}},
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host_config=client.create_host_config(
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binds={dirname: {'bind': dirname, 'ro': False}},
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network_mode='none',
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),
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)
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try:
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client.start(container)
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exitcode = client.wait(container)['StatusCode']
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if exitcode != 0:
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output = client.logs(container)
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raise Exception(
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"Container exited with code {}:\n{}".format(exitcode, output))
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container_info = client.inspect_container(container)
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if 'Node' in container_info:
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return container_info['Node']['Name']
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finally:
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client.remove_container(container, force=True)
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def create_host_file(client, filename):
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with open(filename) as fh:
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content = fh.read()
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return create_custom_host_file(client, filename, content)
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@contextlib.contextmanager
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def cd(path):
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"""
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A context manager which changes the working directory to the given
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path, and then changes it back to its previous value on exit.
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"""
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prev_cwd = os.getcwd()
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os.chdir(path)
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try:
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yield
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finally:
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os.chdir(prev_cwd)
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