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#!/usr/bin/env python
# pip installs packages using pinned package versions. If CERTBOT_OLDEST is set
# to 1, a combination of tools/oldest_constraints.txt,
# tools/dev_constraints.txt, and local-oldest-requirements.txt contained in the
# top level of the package's directory is used, otherwise, a combination of
# certbot-auto's requirements file and tools/dev_constraints.txt is used. The
# other file always takes precedence over tools/dev_constraints.txt. If
# CERTBOT_OLDEST is set, this script must be run with `-e <package-name>` and
# no other arguments.
from __future__ import absolute_import
from __future__ import print_function
import os
import re
import shutil
import subprocess
import sys
import tempfile
import merge_requirements as merge_module
import readlink
import strip_hashes
def find_tools_path():
return os.path.dirname(readlink.main(__file__))
def certbot_oldest_processing(tools_path, args, test_constraints):
if args[0] != '-e' or len(args) != 2:
raise ValueError('When CERTBOT_OLDEST is set, this script must be run '
'with a single -e <path> argument.')
# remove any extras such as [dev]
pkg_dir = re.sub(r'\[\w+\]', '', args[1])
requirements = os.path.join(pkg_dir, 'local-oldest-requirements.txt')
shutil.copy(os.path.join(tools_path, 'oldest_constraints.txt'), test_constraints)
# packages like acme don't have any local oldest requirements
if not os.path.isfile(requirements):
return None
return requirements
def certbot_normal_processing(tools_path, test_constraints):
repo_path = os.path.dirname(tools_path)
certbot_requirements = os.path.normpath(os.path.join(
repo_path, 'letsencrypt-auto-source/pieces/dependency-requirements.txt'))
with open(certbot_requirements, 'r') as fd:
data = fd.readlines()
with open(test_constraints, 'w') as fd:
data = "\n".join(strip_hashes.process_entries(data))
fd.write(data)
def merge_requirements(tools_path, requirements, test_constraints, all_constraints):
# Order of the files in the merge function matters.
# Indeed version retained for a given package will be the last version
# found when following all requirements in the given order.
# Here is the order by increasing priority:
# 1) The general development constraints (tools/dev_constraints.txt)
# 2) The general tests constraints (oldest_requirements.txt or
# certbot-auto's dependency-requirements.txt for the normal processing)
# 3) The local requirement file, typically local-oldest-requirement in oldest tests
files = [os.path.join(tools_path, 'dev_constraints.txt'), test_constraints]
if requirements:
files.append(requirements)
merged_requirements = merge_module.main(*files)
with open(all_constraints, 'w') as fd:
fd.write(merged_requirements)
def call_with_print(command):
print(command)
subprocess.check_call(command, shell=True)
def pip_install_with_print(args_str):
command = '"{0}" -m pip install --disable-pip-version-check {1}'.format(sys.executable,
args_str)
call_with_print(command)
def main(args):
tools_path = find_tools_path()
working_dir = tempfile.mkdtemp()
if os.environ.get('TRAVIS'):
# When this script is executed on Travis, the following print will make the log
# be folded until the end command is printed (see finally section).
print('travis_fold:start:install_certbot_deps')
try:
test_constraints = os.path.join(working_dir, 'test_constraints.txt')
all_constraints = os.path.join(working_dir, 'all_constraints.txt')
if os.environ.get('CERTBOT_NO_PIN') == '1':
# With unpinned dependencies, there is no constraint
pip_install_with_print(' '.join(args))
else:
# Otherwise, we merge requirements to build the constraints and pin dependencies
requirements = None
if os.environ.get('CERTBOT_OLDEST') == '1':
requirements = certbot_oldest_processing(tools_path, args, test_constraints)
else:
certbot_normal_processing(tools_path, test_constraints)
merge_requirements(tools_path, requirements, test_constraints, all_constraints)
if requirements: # This branch is executed during the oldest tests
# First step, install the transitive dependencies of oldest requirements
# in respect with oldest constraints.
pip_install_with_print('--constraint "{0}" --requirement "{1}"'
.format(all_constraints, requirements))
# Second step, ensure that oldest requirements themselves are effectively
# installed using --force-reinstall, and avoid corner cases like the one described
# in https://github.com/certbot/certbot/issues/7014.
pip_install_with_print('--force-reinstall --no-deps --requirement "{0}"'
.format(requirements))
pip_install_with_print('--constraint "{0}" {1}'.format(
all_constraints, ' '.join(args)))
finally:
if os.environ.get('TRAVIS'):
print('travis_fold:end:install_certbot_deps')
shutil.rmtree(working_dir)
if __name__ == '__main__':
main(sys.argv[1:])
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