mirror of
https://github.com/pre-commit/pre-commit.git
synced 2026-01-13 04:20:28 -06:00
101 lines
3.1 KiB
Python
101 lines
3.1 KiB
Python
from __future__ import absolute_import
|
|
from __future__ import unicode_literals
|
|
|
|
import hashlib
|
|
import os
|
|
|
|
import pre_commit.constants as C
|
|
from pre_commit import five
|
|
from pre_commit.languages import helpers
|
|
from pre_commit.util import CalledProcessError
|
|
from pre_commit.util import clean_path_on_failure
|
|
from pre_commit.util import cmd_output
|
|
|
|
|
|
ENVIRONMENT_DIR = 'docker'
|
|
PRE_COMMIT_LABEL = 'PRE_COMMIT'
|
|
get_default_version = helpers.basic_get_default_version
|
|
healthy = helpers.basic_healthy
|
|
|
|
|
|
def md5(s): # pragma: windows no cover
|
|
return hashlib.md5(five.to_bytes(s)).hexdigest()
|
|
|
|
|
|
def docker_tag(prefix): # pragma: windows no cover
|
|
md5sum = md5(os.path.basename(prefix.prefix_dir)).lower()
|
|
return 'pre-commit-{}'.format(md5sum)
|
|
|
|
|
|
def docker_is_running(): # pragma: windows no cover
|
|
try:
|
|
return cmd_output('docker', 'ps')[0] == 0
|
|
except CalledProcessError:
|
|
return False
|
|
|
|
|
|
def assert_docker_available(): # pragma: windows no cover
|
|
assert docker_is_running(), (
|
|
'Docker is either not running or not configured in this environment'
|
|
)
|
|
|
|
|
|
def build_docker_image(prefix, **kwargs): # pragma: windows no cover
|
|
pull = kwargs.pop('pull')
|
|
assert not kwargs, kwargs
|
|
cmd = (
|
|
'docker', 'build',
|
|
'--tag', docker_tag(prefix),
|
|
'--label', PRE_COMMIT_LABEL,
|
|
)
|
|
if pull:
|
|
cmd += ('--pull',)
|
|
# This must come last for old versions of docker. See #477
|
|
cmd += ('.',)
|
|
helpers.run_setup_cmd(prefix, cmd)
|
|
|
|
|
|
def install_environment(
|
|
prefix, version, additional_dependencies,
|
|
): # pragma: windows no cover
|
|
helpers.assert_version_default('docker', version)
|
|
helpers.assert_no_additional_deps('docker', additional_dependencies)
|
|
assert_docker_available()
|
|
|
|
directory = prefix.path(
|
|
helpers.environment_dir(ENVIRONMENT_DIR, C.DEFAULT),
|
|
)
|
|
|
|
# Docker doesn't really have relevant disk environment, but pre-commit
|
|
# still needs to cleanup it's state files on failure
|
|
with clean_path_on_failure(directory):
|
|
build_docker_image(prefix, pull=True)
|
|
os.mkdir(directory)
|
|
|
|
|
|
def docker_cmd(): # pragma: windows no cover
|
|
return (
|
|
'docker', 'run',
|
|
'--rm',
|
|
'-u', '{}:{}'.format(os.getuid(), os.getgid()),
|
|
# https://docs.docker.com/engine/reference/commandline/run/#mount-volumes-from-container-volumes-from
|
|
# The `Z` option tells Docker to label the content with a private
|
|
# unshared label. Only the current container can use a private volume.
|
|
'-v', '{}:/src:rw,Z'.format(os.getcwd()),
|
|
'--workdir', '/src',
|
|
)
|
|
|
|
|
|
def run_hook(hook, file_args): # pragma: windows no cover
|
|
assert_docker_available()
|
|
# Rebuild the docker image in case it has gone missing, as many people do
|
|
# automated cleanup of docker images.
|
|
build_docker_image(hook.prefix, pull=False)
|
|
|
|
hook_cmd = helpers.to_cmd(hook)
|
|
entry_exe, cmd_rest = hook_cmd[0], hook_cmd[1:]
|
|
|
|
entry_tag = ('--entrypoint', entry_exe, docker_tag(hook.prefix))
|
|
cmd = docker_cmd() + entry_tag + cmd_rest
|
|
return helpers.run_xargs(hook, cmd, file_args)
|