ansible/test/runner/lib/util_common.py

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"""Common utility code that depends on CommonConfig."""
from __future__ import absolute_import, print_function
import atexit
import contextlib
import os
import shutil
import tempfile
import textwrap
from lib.util import (
common_environment,
COVERAGE_CONFIG_PATH,
COVERAGE_OUTPUT_PATH,
display,
find_python,
INSTALL_ROOT,
is_shippable,
MODE_DIRECTORY,
MODE_FILE_EXECUTE,
PYTHON_PATHS,
raw_command,
)
class CommonConfig(object):
"""Configuration common to all commands."""
def __init__(self, args, command):
"""
:type args: any
:type command: str
"""
self.command = command
self.color = args.color # type: bool
self.explain = args.explain # type: bool
self.verbosity = args.verbosity # type: int
self.debug = args.debug # type: bool
self.truncate = args.truncate # type: int
self.redact = args.redact # type: bool
if is_shippable():
self.redact = True
self.cache = {}
@contextlib.contextmanager
def named_temporary_file(args, prefix, suffix, directory, content):
"""
:param args: CommonConfig
:param prefix: str
:param suffix: str
:param directory: str
:param content: str | bytes | unicode
:rtype: str
"""
if not isinstance(content, bytes):
content = content.encode('utf-8')
if args.explain:
yield os.path.join(directory, '%stemp%s' % (prefix, suffix))
else:
with tempfile.NamedTemporaryFile(prefix=prefix, suffix=suffix, dir=directory) as tempfile_fd:
tempfile_fd.write(content)
tempfile_fd.flush()
yield tempfile_fd.name
def get_python_path(args, interpreter):
"""
:type args: TestConfig
:type interpreter: str
:rtype: str
"""
# When the python interpreter is already named "python" its directory can simply be added to the path.
# Using another level of indirection is only required when the interpreter has a different name.
if os.path.basename(interpreter) == 'python':
return os.path.dirname(interpreter)
python_path = PYTHON_PATHS.get(interpreter)
if python_path:
return python_path
prefix = 'python-'
suffix = '-ansible'
root_temp_dir = '/tmp'
if args.explain:
return os.path.join(root_temp_dir, ''.join((prefix, 'temp', suffix)))
python_path = tempfile.mkdtemp(prefix=prefix, suffix=suffix, dir=root_temp_dir)
injected_interpreter = os.path.join(python_path, 'python')
# A symlink is faster than the execv wrapper, but isn't compatible with virtual environments.
# Attempt to detect when it is safe to use a symlink by checking the real path of the interpreter.
use_symlink = os.path.dirname(os.path.realpath(interpreter)) == os.path.dirname(interpreter)
if use_symlink:
display.info('Injecting "%s" as a symlink to the "%s" interpreter.' % (injected_interpreter, interpreter), verbosity=1)
os.symlink(interpreter, injected_interpreter)
else:
display.info('Injecting "%s" as a execv wrapper for the "%s" interpreter.' % (injected_interpreter, interpreter), verbosity=1)
code = textwrap.dedent('''
#!%s
from __future__ import absolute_import
from os import execv
from sys import argv
python = '%s'
execv(python, [python] + argv[1:])
''' % (interpreter, interpreter)).lstrip()
with open(injected_interpreter, 'w') as python_fd:
python_fd.write(code)
os.chmod(injected_interpreter, MODE_FILE_EXECUTE)
os.chmod(python_path, MODE_DIRECTORY)
if not PYTHON_PATHS:
atexit.register(cleanup_python_paths)
PYTHON_PATHS[interpreter] = python_path
return python_path
def cleanup_python_paths():
"""Clean up all temporary python directories."""
for path in sorted(PYTHON_PATHS.values()):
display.info('Cleaning up temporary python directory: %s' % path, verbosity=2)
shutil.rmtree(path)
def get_coverage_environment(args, target_name, version, temp_path, module_coverage):
"""
:type args: TestConfig
:type target_name: str
:type version: str
:type temp_path: str
:type module_coverage: bool
:rtype: dict[str, str]
"""
if temp_path:
# integration tests (both localhost and the optional testhost)
# config and results are in a temporary directory
coverage_config_base_path = temp_path
coverage_output_base_path = temp_path
else:
# unit tests, sanity tests and other special cases (localhost only)
# config and results are in the source tree
coverage_config_base_path = args.coverage_config_base_path or INSTALL_ROOT
coverage_output_base_path = os.path.abspath(os.path.join('test/results'))
config_file = os.path.join(coverage_config_base_path, COVERAGE_CONFIG_PATH)
coverage_file = os.path.join(coverage_output_base_path, COVERAGE_OUTPUT_PATH, '%s=%s=%s=%s=coverage' % (
args.command, target_name, args.coverage_label or 'local-%s' % version, 'python-%s' % version))
if args.coverage_check:
# cause the 'coverage' module to be found, but not imported or enabled
coverage_file = ''
# Enable code coverage collection on local Python programs (this does not include Ansible modules).
# Used by the injectors in test/runner/injector/ to support code coverage.
# Used by unit tests in test/units/conftest.py to support code coverage.
# The COVERAGE_FILE variable is also used directly by the 'coverage' module.
env = dict(
COVERAGE_CONF=config_file,
COVERAGE_FILE=coverage_file,
)
if module_coverage:
# Enable code coverage collection on Ansible modules (both local and remote).
# Used by the AnsiballZ wrapper generator in lib/ansible/executor/module_common.py to support code coverage.
env.update(dict(
_ANSIBLE_COVERAGE_CONFIG=config_file,
_ANSIBLE_COVERAGE_OUTPUT=coverage_file,
))
return env
def intercept_command(args, cmd, target_name, env, capture=False, data=None, cwd=None, python_version=None, temp_path=None, module_coverage=True,
virtualenv=None):
"""
:type args: TestConfig
:type cmd: collections.Iterable[str]
:type target_name: str
:type env: dict[str, str]
:type capture: bool
:type data: str | None
:type cwd: str | None
:type python_version: str | None
:type temp_path: str | None
:type module_coverage: bool
:type virtualenv: str | None
:rtype: str | None, str | None
"""
if not env:
env = common_environment()
cmd = list(cmd)
version = python_version or args.python_version
interpreter = virtualenv or find_python(version)
inject_path = os.path.join(INSTALL_ROOT, 'test/runner/injector')
if not virtualenv:
# injection of python into the path is required when not activating a virtualenv
# otherwise scripts may find the wrong interpreter or possibly no interpreter
python_path = get_python_path(args, interpreter)
inject_path = python_path + os.path.pathsep + inject_path
env['PATH'] = inject_path + os.path.pathsep + env['PATH']
env['ANSIBLE_TEST_PYTHON_VERSION'] = version
env['ANSIBLE_TEST_PYTHON_INTERPRETER'] = interpreter
if args.coverage:
# add the necessary environment variables to enable code coverage collection
env.update(get_coverage_environment(args, target_name, version, temp_path, module_coverage))
return run_command(args, cmd, capture=capture, env=env, data=data, cwd=cwd)
def run_command(args, cmd, capture=False, env=None, data=None, cwd=None, always=False, stdin=None, stdout=None,
cmd_verbosity=1, str_errors='strict'):
"""
:type args: CommonConfig
:type cmd: collections.Iterable[str]
:type capture: bool
:type env: dict[str, str] | None
:type data: str | None
:type cwd: str | None
:type always: bool
:type stdin: file | None
:type stdout: file | None
:type cmd_verbosity: int
:type str_errors: str
:rtype: str | None, str | None
"""
explain = args.explain and not always
return raw_command(cmd, capture=capture, env=env, data=data, cwd=cwd, explain=explain, stdin=stdin, stdout=stdout,
cmd_verbosity=cmd_verbosity, str_errors=str_errors)