8775001671
There are links from the scenario guides to collections but collections
docs aren't built in testing or locally when we're on the devel branch.
Due to that we need to make sure those references resolve to the
production docsite. We can use intersphinx to make sure that happens.
* The test for binary files wasn't reading enough of the file.
Checking for null bytes in the first 1024 bytes failed to diagnose the
ansible_2_10.inv file as binary
(cherry picked from commit e10902d744
)
Co-authored-by: Toshio Kuratomi <a.badger@gmail.com>
853 lines
23 KiB
Python
853 lines
23 KiB
Python
"""Miscellaneous utility functions and classes."""
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import contextlib
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import errno
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import fcntl
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import inspect
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import os
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import pkgutil
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import random
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import re
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import shutil
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import socket
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import stat
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import string
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import subprocess
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import sys
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import tempfile
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import time
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import zipfile
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from struct import unpack, pack
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from termios import TIOCGWINSZ
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try:
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from abc import ABC
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except ImportError:
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from abc import ABCMeta
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ABC = ABCMeta('ABC', (), {})
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try:
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# noinspection PyCompatibility
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from configparser import ConfigParser
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except ImportError:
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# noinspection PyCompatibility,PyUnresolvedReferences
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from ConfigParser import SafeConfigParser as ConfigParser
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try:
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# noinspection PyProtectedMember
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from shlex import quote as cmd_quote
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except ImportError:
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# noinspection PyProtectedMember
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from pipes import quote as cmd_quote
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from . import types as t
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from .encoding import (
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to_bytes,
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to_optional_bytes,
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to_optional_text,
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)
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from .io import (
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open_binary_file,
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read_text_file,
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)
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try:
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C = t.TypeVar('C')
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except AttributeError:
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C = None
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PYTHON_PATHS = {} # type: t.Dict[str, str]
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try:
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# noinspection PyUnresolvedReferences
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MAXFD = subprocess.MAXFD
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except AttributeError:
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MAXFD = -1
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COVERAGE_CONFIG_NAME = 'coveragerc'
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ANSIBLE_TEST_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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# assume running from install
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ANSIBLE_ROOT = os.path.dirname(ANSIBLE_TEST_ROOT)
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ANSIBLE_BIN_PATH = os.path.dirname(os.path.abspath(sys.argv[0]))
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ANSIBLE_LIB_ROOT = os.path.join(ANSIBLE_ROOT, 'ansible')
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ANSIBLE_SOURCE_ROOT = None
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if not os.path.exists(ANSIBLE_LIB_ROOT):
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# running from source
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ANSIBLE_ROOT = os.path.dirname(os.path.dirname(os.path.dirname(ANSIBLE_TEST_ROOT)))
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ANSIBLE_BIN_PATH = os.path.join(ANSIBLE_ROOT, 'bin')
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ANSIBLE_LIB_ROOT = os.path.join(ANSIBLE_ROOT, 'lib', 'ansible')
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ANSIBLE_SOURCE_ROOT = ANSIBLE_ROOT
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ANSIBLE_TEST_DATA_ROOT = os.path.join(ANSIBLE_TEST_ROOT, '_data')
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ANSIBLE_TEST_CONFIG_ROOT = os.path.join(ANSIBLE_TEST_ROOT, 'config')
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# Modes are set to allow all users the same level of access.
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# This permits files to be used in tests that change users.
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# The only exception is write access to directories for the user creating them.
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# This avoids having to modify the directory permissions a second time.
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MODE_READ = stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH
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MODE_FILE = MODE_READ
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MODE_FILE_EXECUTE = MODE_FILE | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
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MODE_FILE_WRITE = MODE_FILE | stat.S_IWUSR | stat.S_IWGRP | stat.S_IWOTH
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MODE_DIRECTORY = MODE_READ | stat.S_IWUSR | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
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MODE_DIRECTORY_WRITE = MODE_DIRECTORY | stat.S_IWGRP | stat.S_IWOTH
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REMOTE_ONLY_PYTHON_VERSIONS = (
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'2.6',
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)
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SUPPORTED_PYTHON_VERSIONS = (
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'2.6',
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'2.7',
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'3.5',
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'3.6',
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'3.7',
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'3.8',
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'3.9',
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)
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def remove_file(path):
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"""
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:type path: str
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"""
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if os.path.isfile(path):
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os.remove(path)
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def read_lines_without_comments(path, remove_blank_lines=False, optional=False): # type: (str, bool, bool) -> t.List[str]
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"""
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Returns lines from the specified text file with comments removed.
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Comments are any content from a hash symbol to the end of a line.
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Any spaces immediately before a comment are also removed.
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"""
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if optional and not os.path.exists(path):
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return []
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lines = read_text_file(path).splitlines()
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lines = [re.sub(r' *#.*$', '', line) for line in lines]
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if remove_blank_lines:
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lines = [line for line in lines if line]
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return lines
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def find_executable(executable, cwd=None, path=None, required=True):
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"""
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:type executable: str
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:type cwd: str
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:type path: str
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:type required: bool | str
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:rtype: str | None
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"""
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match = None
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real_cwd = os.getcwd()
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if not cwd:
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cwd = real_cwd
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if os.path.dirname(executable):
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target = os.path.join(cwd, executable)
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if os.path.exists(target) and os.access(target, os.F_OK | os.X_OK):
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match = executable
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else:
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if path is None:
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path = os.environ.get('PATH', os.path.defpath)
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if path:
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path_dirs = path.split(os.path.pathsep)
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seen_dirs = set()
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for path_dir in path_dirs:
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if path_dir in seen_dirs:
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continue
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seen_dirs.add(path_dir)
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if os.path.abspath(path_dir) == real_cwd:
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path_dir = cwd
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candidate = os.path.join(path_dir, executable)
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if os.path.exists(candidate) and os.access(candidate, os.F_OK | os.X_OK):
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match = candidate
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break
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if not match and required:
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message = 'Required program "%s" not found.' % executable
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if required != 'warning':
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raise ApplicationError(message)
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display.warning(message)
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return match
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def find_python(version, path=None, required=True):
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"""
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:type version: str
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:type path: str | None
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:type required: bool
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:rtype: str
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"""
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version_info = tuple(int(n) for n in version.split('.'))
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if not path and version_info == sys.version_info[:len(version_info)]:
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python_bin = sys.executable
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else:
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python_bin = find_executable('python%s' % version, path=path, required=required)
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return python_bin
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def get_ansible_version(): # type: () -> str
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"""Return the Ansible version."""
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try:
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return get_ansible_version.version
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except AttributeError:
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pass
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# ansible may not be in our sys.path
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# avoids a symlink to release.py since ansible placement relative to ansible-test may change during delegation
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load_module(os.path.join(ANSIBLE_LIB_ROOT, 'release.py'), 'ansible_release')
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# noinspection PyUnresolvedReferences
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from ansible_release import __version__ as ansible_version # pylint: disable=import-error
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get_ansible_version.version = ansible_version
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return ansible_version
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def get_available_python_versions(versions): # type: (t.List[str]) -> t.Dict[str, str]
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"""Return a dictionary indicating which of the requested Python versions are available."""
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try:
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return get_available_python_versions.result
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except AttributeError:
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pass
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get_available_python_versions.result = dict((version, path) for version, path in
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((version, find_python(version, required=False)) for version in versions) if path)
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return get_available_python_versions.result
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def generate_pip_command(python):
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"""
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:type python: str
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:rtype: list[str]
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"""
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return [python, os.path.join(ANSIBLE_TEST_DATA_ROOT, 'quiet_pip.py')]
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def raw_command(cmd, capture=False, env=None, data=None, cwd=None, explain=False, stdin=None, stdout=None,
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cmd_verbosity=1, str_errors='strict'):
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"""
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:type cmd: collections.Iterable[str]
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:type capture: bool
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:type env: dict[str, str] | None
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:type data: str | None
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:type cwd: str | None
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:type explain: bool
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:type stdin: file | None
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:type stdout: file | None
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:type cmd_verbosity: int
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:type str_errors: str
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:rtype: str | None, str | None
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"""
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if not cwd:
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cwd = os.getcwd()
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if not env:
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env = common_environment()
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cmd = list(cmd)
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escaped_cmd = ' '.join(cmd_quote(c) for c in cmd)
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display.info('Run command: %s' % escaped_cmd, verbosity=cmd_verbosity, truncate=True)
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display.info('Working directory: %s' % cwd, verbosity=2)
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program = find_executable(cmd[0], cwd=cwd, path=env['PATH'], required='warning')
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if program:
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display.info('Program found: %s' % program, verbosity=2)
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for key in sorted(env.keys()):
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display.info('%s=%s' % (key, env[key]), verbosity=2)
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if explain:
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return None, None
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communicate = False
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if stdin is not None:
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data = None
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communicate = True
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elif data is not None:
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stdin = subprocess.PIPE
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communicate = True
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if stdout:
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communicate = True
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if capture:
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stdout = stdout or subprocess.PIPE
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stderr = subprocess.PIPE
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communicate = True
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else:
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stderr = None
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start = time.time()
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process = None
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try:
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try:
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cmd_bytes = [to_bytes(c) for c in cmd]
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env_bytes = dict((to_bytes(k), to_bytes(v)) for k, v in env.items())
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process = subprocess.Popen(cmd_bytes, env=env_bytes, stdin=stdin, stdout=stdout, stderr=stderr, cwd=cwd)
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except OSError as ex:
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if ex.errno == errno.ENOENT:
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raise ApplicationError('Required program "%s" not found.' % cmd[0])
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raise
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if communicate:
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data_bytes = to_optional_bytes(data)
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stdout_bytes, stderr_bytes = process.communicate(data_bytes)
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stdout_text = to_optional_text(stdout_bytes, str_errors) or u''
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stderr_text = to_optional_text(stderr_bytes, str_errors) or u''
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else:
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process.wait()
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stdout_text, stderr_text = None, None
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finally:
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if process and process.returncode is None:
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process.kill()
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display.info('') # the process we're interrupting may have completed a partial line of output
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display.notice('Killed command to avoid an orphaned child process during handling of an unexpected exception.')
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status = process.returncode
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runtime = time.time() - start
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display.info('Command exited with status %s after %s seconds.' % (status, runtime), verbosity=4)
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if status == 0:
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return stdout_text, stderr_text
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raise SubprocessError(cmd, status, stdout_text, stderr_text, runtime)
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def common_environment():
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"""Common environment used for executing all programs."""
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env = dict(
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LC_ALL='en_US.UTF-8',
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PATH=os.environ.get('PATH', os.path.defpath),
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)
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required = (
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'HOME',
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)
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optional = (
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'HTTPTESTER',
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'LD_LIBRARY_PATH',
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'SSH_AUTH_SOCK',
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# MacOS High Sierra Compatibility
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# http://sealiesoftware.com/blog/archive/2017/6/5/Objective-C_and_fork_in_macOS_1013.html
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# Example configuration for macOS:
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# export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
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'OBJC_DISABLE_INITIALIZE_FORK_SAFETY',
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'ANSIBLE_KEEP_REMOTE_FILES',
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# MacOS Homebrew Compatibility
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# https://cryptography.io/en/latest/installation/#building-cryptography-on-macos
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# This may also be required to install pyyaml with libyaml support when installed in non-standard locations.
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# Example configuration for brew on macOS:
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# export LDFLAGS="-L$(brew --prefix openssl)/lib/ -L$(brew --prefix libyaml)/lib/"
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# export CFLAGS="-I$(brew --prefix openssl)/include/ -I$(brew --prefix libyaml)/include/"
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# However, this is not adequate for PyYAML 3.13, which is the latest version supported on Python 2.6.
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# For that version the standard location must be used, or `pip install` must be invoked with additional options:
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# --global-option=build_ext --global-option=-L{path_to_lib_dir}
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'LDFLAGS',
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'CFLAGS',
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)
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env.update(pass_vars(required=required, optional=optional))
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return env
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def pass_vars(required, optional):
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"""
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:type required: collections.Iterable[str]
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:type optional: collections.Iterable[str]
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:rtype: dict[str, str]
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"""
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env = {}
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for name in required:
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if name not in os.environ:
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raise MissingEnvironmentVariable(name)
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env[name] = os.environ[name]
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for name in optional:
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if name not in os.environ:
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continue
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env[name] = os.environ[name]
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return env
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def deepest_path(path_a, path_b):
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"""Return the deepest of two paths, or None if the paths are unrelated.
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:type path_a: str
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:type path_b: str
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:rtype: str | None
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"""
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if path_a == '.':
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path_a = ''
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if path_b == '.':
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path_b = ''
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if path_a.startswith(path_b):
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return path_a or '.'
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if path_b.startswith(path_a):
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return path_b or '.'
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return None
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def remove_tree(path):
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"""
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:type path: str
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"""
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try:
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shutil.rmtree(to_bytes(path))
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except OSError as ex:
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if ex.errno != errno.ENOENT:
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raise
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def is_binary_file(path):
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"""
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:type path: str
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:rtype: bool
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"""
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assume_text = set([
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'.cfg',
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'.conf',
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'.crt',
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'.cs',
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'.css',
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'.html',
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'.ini',
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'.j2',
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'.js',
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'.json',
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'.md',
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'.pem',
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'.ps1',
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'.psm1',
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'.py',
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'.rst',
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'.sh',
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'.txt',
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'.xml',
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'.yaml',
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'.yml',
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])
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assume_binary = set([
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'.bin',
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'.eot',
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'.gz',
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'.ico',
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'.iso',
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'.jpg',
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'.otf',
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'.p12',
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'.png',
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'.pyc',
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'.rpm',
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'.ttf',
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'.woff',
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'.woff2',
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'.zip',
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])
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ext = os.path.splitext(path)[1]
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if ext in assume_text:
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return False
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if ext in assume_binary:
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return True
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with open_binary_file(path) as path_fd:
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# noinspection PyTypeChecker
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return b'\0' in path_fd.read(2048)
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def generate_password():
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"""Generate a random password.
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|
:rtype: str
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"""
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chars = [
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string.ascii_letters,
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string.digits,
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string.ascii_letters,
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string.digits,
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'-',
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] * 4
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password = ''.join([random.choice(char) for char in chars[:-1]])
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display.sensitive.add(password)
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return password
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class Display:
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"""Manages color console output."""
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clear = '\033[0m'
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red = '\033[31m'
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green = '\033[32m'
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yellow = '\033[33m'
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blue = '\033[34m'
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purple = '\033[35m'
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cyan = '\033[36m'
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verbosity_colors = {
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0: None,
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1: green,
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2: blue,
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3: cyan,
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}
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def __init__(self):
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self.verbosity = 0
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self.color = sys.stdout.isatty()
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self.warnings = []
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self.warnings_unique = set()
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self.info_stderr = False
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self.rows = 0
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self.columns = 0
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self.truncate = 0
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self.redact = True
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self.sensitive = set()
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if os.isatty(0):
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self.rows, self.columns = unpack('HHHH', fcntl.ioctl(0, TIOCGWINSZ, pack('HHHH', 0, 0, 0, 0)))[:2]
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def __warning(self, message):
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"""
|
|
:type message: str
|
|
"""
|
|
self.print_message('WARNING: %s' % message, color=self.purple, fd=sys.stderr)
|
|
|
|
def review_warnings(self):
|
|
"""Review all warnings which previously occurred."""
|
|
if not self.warnings:
|
|
return
|
|
|
|
self.__warning('Reviewing previous %d warning(s):' % len(self.warnings))
|
|
|
|
for warning in self.warnings:
|
|
self.__warning(warning)
|
|
|
|
def warning(self, message, unique=False, verbosity=0):
|
|
"""
|
|
:type message: str
|
|
:type unique: bool
|
|
:type verbosity: int
|
|
"""
|
|
if verbosity > self.verbosity:
|
|
return
|
|
|
|
if unique:
|
|
if message in self.warnings_unique:
|
|
return
|
|
|
|
self.warnings_unique.add(message)
|
|
|
|
self.__warning(message)
|
|
self.warnings.append(message)
|
|
|
|
def notice(self, message):
|
|
"""
|
|
:type message: str
|
|
"""
|
|
self.print_message('NOTICE: %s' % message, color=self.purple, fd=sys.stderr)
|
|
|
|
def error(self, message):
|
|
"""
|
|
:type message: str
|
|
"""
|
|
self.print_message('ERROR: %s' % message, color=self.red, fd=sys.stderr)
|
|
|
|
def info(self, message, verbosity=0, truncate=False):
|
|
"""
|
|
:type message: str
|
|
:type verbosity: int
|
|
:type truncate: bool
|
|
"""
|
|
if self.verbosity >= verbosity:
|
|
color = self.verbosity_colors.get(verbosity, self.yellow)
|
|
self.print_message(message, color=color, fd=sys.stderr if self.info_stderr else sys.stdout, truncate=truncate)
|
|
|
|
def print_message(self, message, color=None, fd=sys.stdout, truncate=False): # pylint: disable=locally-disabled, invalid-name
|
|
"""
|
|
:type message: str
|
|
:type color: str | None
|
|
:type fd: file
|
|
:type truncate: bool
|
|
"""
|
|
if self.redact and self.sensitive:
|
|
for item in self.sensitive:
|
|
if not item:
|
|
continue
|
|
|
|
message = message.replace(item, '*' * len(item))
|
|
|
|
if truncate:
|
|
if len(message) > self.truncate > 5:
|
|
message = message[:self.truncate - 5] + ' ...'
|
|
|
|
if color and self.color:
|
|
# convert color resets in message to desired color
|
|
message = message.replace(self.clear, color)
|
|
message = '%s%s%s' % (color, message, self.clear)
|
|
|
|
if sys.version_info[0] == 2:
|
|
message = to_bytes(message)
|
|
|
|
print(message, file=fd)
|
|
fd.flush()
|
|
|
|
|
|
class ApplicationError(Exception):
|
|
"""General application error."""
|
|
|
|
|
|
class ApplicationWarning(Exception):
|
|
"""General application warning which interrupts normal program flow."""
|
|
|
|
|
|
class SubprocessError(ApplicationError):
|
|
"""Error resulting from failed subprocess execution."""
|
|
def __init__(self, cmd, status=0, stdout=None, stderr=None, runtime=None):
|
|
"""
|
|
:type cmd: list[str]
|
|
:type status: int
|
|
:type stdout: str | None
|
|
:type stderr: str | None
|
|
:type runtime: float | None
|
|
"""
|
|
message = 'Command "%s" returned exit status %s.\n' % (' '.join(cmd_quote(c) for c in cmd), status)
|
|
|
|
if stderr:
|
|
message += '>>> Standard Error\n'
|
|
message += '%s%s\n' % (stderr.strip(), Display.clear)
|
|
|
|
if stdout:
|
|
message += '>>> Standard Output\n'
|
|
message += '%s%s\n' % (stdout.strip(), Display.clear)
|
|
|
|
message = message.strip()
|
|
|
|
super(SubprocessError, self).__init__(message)
|
|
|
|
self.cmd = cmd
|
|
self.message = message
|
|
self.status = status
|
|
self.stdout = stdout
|
|
self.stderr = stderr
|
|
self.runtime = runtime
|
|
|
|
|
|
class MissingEnvironmentVariable(ApplicationError):
|
|
"""Error caused by missing environment variable."""
|
|
def __init__(self, name):
|
|
"""
|
|
:type name: str
|
|
"""
|
|
super(MissingEnvironmentVariable, self).__init__('Missing environment variable: %s' % name)
|
|
|
|
self.name = name
|
|
|
|
|
|
def parse_to_list_of_dict(pattern, value):
|
|
"""
|
|
:type pattern: str
|
|
:type value: str
|
|
:return: list[dict[str, str]]
|
|
"""
|
|
matched = []
|
|
unmatched = []
|
|
|
|
for line in value.splitlines():
|
|
match = re.search(pattern, line)
|
|
|
|
if match:
|
|
matched.append(match.groupdict())
|
|
else:
|
|
unmatched.append(line)
|
|
|
|
if unmatched:
|
|
raise Exception('Pattern "%s" did not match values:\n%s' % (pattern, '\n'.join(unmatched)))
|
|
|
|
return matched
|
|
|
|
|
|
def get_available_port():
|
|
"""
|
|
:rtype: int
|
|
"""
|
|
# this relies on the kernel not reusing previously assigned ports immediately
|
|
socket_fd = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
|
|
with contextlib.closing(socket_fd):
|
|
socket_fd.bind(('', 0))
|
|
return socket_fd.getsockname()[1]
|
|
|
|
|
|
def get_subclasses(class_type): # type: (t.Type[C]) -> t.Set[t.Type[C]]
|
|
"""Returns the set of types that are concrete subclasses of the given type."""
|
|
subclasses = set() # type: t.Set[t.Type[C]]
|
|
queue = [class_type] # type: t.List[t.Type[C]]
|
|
|
|
while queue:
|
|
parent = queue.pop()
|
|
|
|
for child in parent.__subclasses__():
|
|
if child not in subclasses:
|
|
if not inspect.isabstract(child):
|
|
subclasses.add(child)
|
|
queue.append(child)
|
|
|
|
return subclasses
|
|
|
|
|
|
def is_subdir(candidate_path, path): # type: (str, str) -> bool
|
|
"""Returns true if candidate_path is path or a subdirectory of path."""
|
|
if not path.endswith(os.path.sep):
|
|
path += os.path.sep
|
|
|
|
if not candidate_path.endswith(os.path.sep):
|
|
candidate_path += os.path.sep
|
|
|
|
return candidate_path.startswith(path)
|
|
|
|
|
|
def paths_to_dirs(paths): # type: (t.List[str]) -> t.List[str]
|
|
"""Returns a list of directories extracted from the given list of paths."""
|
|
dir_names = set()
|
|
|
|
for path in paths:
|
|
while True:
|
|
path = os.path.dirname(path)
|
|
|
|
if not path or path == os.path.sep:
|
|
break
|
|
|
|
dir_names.add(path + os.path.sep)
|
|
|
|
return sorted(dir_names)
|
|
|
|
|
|
def str_to_version(version): # type: (str) -> t.Tuple[int]
|
|
"""Return a version tuple from a version string."""
|
|
return tuple(int(n) for n in version.split('.'))
|
|
|
|
|
|
def version_to_str(version): # type: (t.Tuple[int]) -> str
|
|
"""Return a version string from a version tuple."""
|
|
return '.'.join(str(n) for n in version)
|
|
|
|
|
|
def import_plugins(directory, root=None): # type: (str, t.Optional[str]) -> None
|
|
"""
|
|
Import plugins from the given directory relative to the given root.
|
|
If the root is not provided, the 'lib' directory for the test runner will be used.
|
|
"""
|
|
if root is None:
|
|
root = os.path.dirname(__file__)
|
|
|
|
path = os.path.join(root, directory)
|
|
package = __name__.rsplit('.', 1)[0]
|
|
prefix = '%s.%s.' % (package, directory.replace(os.path.sep, '.'))
|
|
|
|
for (_module_loader, name, _ispkg) in pkgutil.iter_modules([path], prefix=prefix):
|
|
module_path = os.path.join(root, name[len(package) + 1:].replace('.', os.path.sep) + '.py')
|
|
load_module(module_path, name)
|
|
|
|
|
|
def load_plugins(base_type, database): # type: (t.Type[C], t.Dict[str, t.Type[C]]) -> None
|
|
"""
|
|
Load plugins of the specified type and track them in the specified database.
|
|
Only plugins which have already been imported will be loaded.
|
|
"""
|
|
plugins = dict((sc.__module__.rsplit('.', 1)[1], sc) for sc in get_subclasses(base_type)) # type: t.Dict[str, t.Type[C]]
|
|
|
|
for plugin in plugins:
|
|
database[plugin] = plugins[plugin]
|
|
|
|
|
|
def load_module(path, name): # type: (str, str) -> None
|
|
"""Load a Python module using the given name and path."""
|
|
if name in sys.modules:
|
|
return
|
|
|
|
if sys.version_info >= (3, 4):
|
|
# noinspection PyUnresolvedReferences
|
|
import importlib.util
|
|
|
|
# noinspection PyUnresolvedReferences
|
|
spec = importlib.util.spec_from_file_location(name, path)
|
|
# noinspection PyUnresolvedReferences
|
|
module = importlib.util.module_from_spec(spec)
|
|
spec.loader.exec_module(module)
|
|
|
|
sys.modules[name] = module
|
|
else:
|
|
# noinspection PyDeprecation
|
|
import imp
|
|
|
|
# load_source (and thus load_module) require a file opened with `open` in text mode
|
|
with open(to_bytes(path)) as module_file:
|
|
# noinspection PyDeprecation
|
|
imp.load_module(name, module_file, path, ('.py', 'r', imp.PY_SOURCE))
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def tempdir(): # type: () -> str
|
|
"""Creates a temporary directory that is deleted outside the context scope."""
|
|
temp_path = tempfile.mkdtemp()
|
|
yield temp_path
|
|
shutil.rmtree(temp_path)
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def open_zipfile(path, mode='r'):
|
|
"""Opens a zip file and closes the file automatically."""
|
|
zib_obj = zipfile.ZipFile(path, mode=mode)
|
|
yield zib_obj
|
|
zib_obj.close()
|
|
|
|
|
|
display = Display() # pylint: disable=locally-disabled, invalid-name
|