ansible/test/lib/ansible_test/_internal/util_common.py
Matt Clay c77ab11051
Fix issues with ansible-test --venv option. (#62033)
* Fix ansible-test venv activation.

When using the ansible-test --venv option, an execv wrapper for each python interpreter is now used instead of a symbolic link.

* Fix ansible-test execv wrapper generation.

Use the currently running Python interpreter for the shebang in the execv wrapper instead of the selected interpreter.

This allows the wrapper to work when the selected interpreter is a script instead of a binary.

* Fix ansible-test sanity requirements install.

When running sanity tests on multiple Python versions, install requirements for all versions used instead of only the default version.

* Fix ansible-test --venv when installed.

When running ansible-test from an install, the --venv delegation option needs to make sure the ansible-test code is available in the created virtual environment.

Exposing system site packages does not work because the virtual environment may be for a different Python version than the one on which ansible-test is installed.
2019-09-09 18:32:29 -07:00

375 lines
13 KiB
Python

"""Common utility code that depends on CommonConfig."""
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import atexit
import contextlib
import json
import os
import shutil
import sys
import tempfile
import textwrap
from . import types as t
from .util import (
common_environment,
COVERAGE_CONFIG_NAME,
display,
find_python,
is_shippable,
MODE_DIRECTORY,
MODE_FILE_EXECUTE,
PYTHON_PATHS,
raw_command,
to_bytes,
ANSIBLE_TEST_DATA_ROOT,
make_dirs,
ApplicationError,
)
from .data import (
data_context,
)
from .provider.layout import (
LayoutMessages,
)
class ResultType:
"""Test result type."""
BOT = None # type: ResultType
COVERAGE = None # type: ResultType
DATA = None # type: ResultType
JUNIT = None # type: ResultType
LOGS = None # type: ResultType
REPORTS = None # type: ResultType
TMP = None # type: ResultType
@staticmethod
def _populate():
ResultType.BOT = ResultType('bot')
ResultType.COVERAGE = ResultType('coverage')
ResultType.DATA = ResultType('data')
ResultType.JUNIT = ResultType('junit')
ResultType.LOGS = ResultType('logs')
ResultType.REPORTS = ResultType('reports')
ResultType.TMP = ResultType('.tmp')
def __init__(self, name): # type: (str) -> None
self.name = name
@property
def relative_path(self): # type: () -> str
"""The content relative path to the results."""
return os.path.join(data_context().content.results_path, self.name)
@property
def path(self): # type: () -> str
"""The absolute path to the results."""
return os.path.join(data_context().content.root, self.relative_path)
def __str__(self): # type: () -> str
return self.name
# noinspection PyProtectedMember
ResultType._populate() # pylint: disable=protected-access
class CommonConfig:
"""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 = {}
def get_ansible_config(self): # type: () -> str
"""Return the path to the Ansible config for the given config."""
return os.path.join(ANSIBLE_TEST_DATA_ROOT, 'ansible.cfg')
def handle_layout_messages(messages): # type: (t.Optional[LayoutMessages]) -> None
"""Display the given layout messages."""
if not messages:
return
for message in messages.info:
display.info(message, verbosity=1)
for message in messages.warning:
display.warning(message)
if messages.error:
raise ApplicationError('\n'.join(messages.error))
@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 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(to_bytes(content))
tempfile_fd.flush()
yield tempfile_fd.name
def write_json_test_results(category, name, content): # type: (ResultType, str, t.Union[t.List[t.Any], t.Dict[str, t.Any]]) -> None
"""Write the given json content to the specified test results path, creating directories as needed."""
path = os.path.join(category.path, name)
write_json_file(path, content, create_directories=True)
def write_text_test_results(category, name, content): # type: (ResultType, str, str) -> None
"""Write the given text content to the specified test results path, creating directories as needed."""
path = os.path.join(category.path, name)
write_text_file(path, content, create_directories=True)
def write_json_file(path, content, create_directories=False): # type: (str, t.Union[t.List[t.Any], t.Dict[str, t.Any]], bool) -> None
"""Write the given json content to the specified path, optionally creating missing directories."""
text_content = json.dumps(content, sort_keys=True, indent=4) + '\n'
write_text_file(path, text_content, create_directories=create_directories)
def write_text_file(path, content, create_directories=False): # type: (str, str, bool) -> None
"""Write the given text content to the specified path, optionally creating missing directories."""
if create_directories:
make_dirs(os.path.dirname(path))
with open(to_bytes(path), 'wb') as file:
file.write(to_bytes(content))
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)
create_interpreter_wrapper(interpreter, injected_interpreter)
os.chmod(python_path, MODE_DIRECTORY)
if not PYTHON_PATHS:
atexit.register(cleanup_python_paths)
PYTHON_PATHS[interpreter] = python_path
return python_path
def create_interpreter_wrapper(interpreter, injected_interpreter): # type: (str, str) -> None
"""Create a wrapper for the given Python interpreter at the specified path."""
# sys.executable is used for the shebang to guarantee it is a binary instead of a script
# injected_interpreter could be a script from the system or our own wrapper created for the --venv option
shebang_interpreter = sys.executable
code = textwrap.dedent('''
#!%s
from __future__ import absolute_import
from os import execv
from sys import argv
python = '%s'
execv(python, [python] + argv[1:])
''' % (shebang_interpreter, interpreter)).lstrip()
write_text_file(injected_interpreter, code)
os.chmod(injected_interpreter, MODE_FILE_EXECUTE)
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, remote_temp_path=None):
"""
:type args: TestConfig
:type target_name: str
:type version: str
:type temp_path: str
:type module_coverage: bool
:type remote_temp_path: str | None
: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
elif args.coverage_config_base_path:
# unit tests, sanity tests and other special cases (localhost only)
# config is in a temporary directory
# results are in the source tree
coverage_config_base_path = args.coverage_config_base_path
coverage_output_base_path = os.path.join(data_context().content.root, data_context().content.results_path)
else:
raise Exception('No temp path and no coverage config base path. Check for missing coverage_context usage.')
config_file = os.path.join(coverage_config_base_path, COVERAGE_CONFIG_NAME)
coverage_file = os.path.join(coverage_output_base_path, ResultType.COVERAGE.name, '%s=%s=%s=%s=coverage' % (
args.command, target_name, args.coverage_label or 'local-%s' % version, 'python-%s' % version))
if not args.explain and not os.path.exists(config_file):
raise Exception('Missing coverage config file: %s' % config_file)
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 to support code coverage.
# Used by the pytest unit test plugin 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,
))
if remote_temp_path:
# Include the command, target and label so the remote host can create a filename with that info. The remote
# is responsible for adding '={language version}=coverage.{hostname}.{pid}.{id}'
env['_ANSIBLE_COVERAGE_REMOTE_OUTPUT'] = os.path.join(remote_temp_path, '%s=%s=%s' % (
args.command, target_name, args.coverage_label or 'remote'))
env['_ANSIBLE_COVERAGE_REMOTE_WHITELIST'] = os.path.join(data_context().content.root, '*')
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, disable_coverage=False, remote_temp_path=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
:type disable_coverage: bool
:type remote_temp_path: 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(ANSIBLE_TEST_DATA_ROOT, '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 and not disable_coverage:
# add the necessary environment variables to enable code coverage collection
env.update(get_coverage_environment(args, target_name, version, temp_path, module_coverage,
remote_temp_path=remote_temp_path))
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)