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plugin.py
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plugin.py
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from itertools import product
import json
import os
import sys
import threading
from typing import Any, Dict, Iterable, List
import importlib_resources
import pluggy
from tox.action import Action
from tox.config import Config, TestenvConfig, _split_env as split_env
from tox.reporter import verbosity1, verbosity2, warning
from tox.venv import VirtualEnv
hookimpl = pluggy.HookimplMarker("tox")
# Using thread local for just in case tox uses multiple threads for execution.
# tox seems to be using multiple processes at this point.
thread_locals = threading.local()
thread_locals.is_grouping_started = {}
@hookimpl
def tox_configure(config):
# type: (Config) -> None
verbosity1("running tox-gh-actions")
if is_running_on_container():
verbosity2(
"not enabling problem matcher as tox seems to be running on a container"
)
# Trying to add a problem matcher from a container without proper host mount can
# cause an error like the following:
# Unable to process command '::add-matcher::/.../matcher.json' successfully.
else:
verbosity2("enabling problem matcher")
print("::add-matcher::" + get_problem_matcher_file_path())
if not is_log_grouping_enabled(config):
verbosity2(
"disabling log line grouping on GitHub Actions based on the configuration"
)
if not is_running_on_actions():
verbosity1(
"tox-gh-actions won't override envlist "
"because tox is not running in GitHub Actions"
)
return
elif is_env_specified(config):
verbosity1(
"tox-gh-actions won't override envlist because "
"envlist is explicitly given via TOXENV or -e option"
)
return
verbosity2("original envconfigs: {}".format(list(config.envconfigs.keys())))
verbosity2("original envlist_default: {}".format(config.envlist_default))
verbosity2("original envlist: {}".format(config.envlist))
versions = get_python_version_keys()
verbosity2("Python versions: {}".format(versions))
gh_actions_config = parse_config(config._cfg.sections)
verbosity2("tox-gh-actions config: {}".format(gh_actions_config))
factors = get_factors(gh_actions_config, versions)
verbosity2("using the following factors to decide envlist: {}".format(factors))
envlist = get_envlist_from_factors(config.envlist, factors)
config.envlist_default = config.envlist = envlist
if len(envlist) == 0:
warning(
"tox-gh-actions couldn't find environments matching the provided factors "
"from envlist. Please use `tox -vv` to get more detailed logs."
)
verbosity1("overriding envlist with: {}".format(envlist))
@hookimpl
def tox_testenv_create(venv, action):
# type: (VirtualEnv, Action) -> None
if is_log_grouping_enabled(venv.envconfig.config):
start_grouping_if_necessary(venv)
@hookimpl
def tox_testenv_install_deps(venv, action):
# type: (VirtualEnv, Action) -> None
if is_log_grouping_enabled(venv.envconfig.config):
start_grouping_if_necessary(venv)
@hookimpl
def tox_runtest_pre(venv):
# type: (VirtualEnv) -> None
if is_log_grouping_enabled(venv.envconfig.config):
start_grouping_if_necessary(venv)
@hookimpl
def tox_runtest_post(venv):
# type: (VirtualEnv) -> None
if is_log_grouping_enabled(venv.envconfig.config):
print("::endgroup::")
@hookimpl
def tox_cleanup(session):
# This hook can be called multiple times especially when using parallel mode
if not is_running_on_actions():
return
verbosity2("disabling problem matcher")
for owner in get_problem_matcher_owners():
print("::remove-matcher owner={}::".format(owner))
def start_grouping_if_necessary(venv):
# type: (VirtualEnv) -> None
"""Start log line grouping when necessary.
This function can be called multiple times when running a test environment
and it ensures that "::group::" is written only once.
We shouldn't call this from tox_package and tox_get_python_executable hooks
because of the timing issue.
"""
envconfig = venv.envconfig # type: TestenvConfig
envname = envconfig.envname
# Do not enable grouping for an environment used for isolated build
# because we don't have a hook to write "::endgroup::" for this environment.
# TODO Make sure the exact condition when isolated_build_env is not set
if envname == getattr(envconfig.config, "isolated_build_env", ""):
return
if thread_locals.is_grouping_started.get(envname, False):
return
thread_locals.is_grouping_started[envname] = True
message = envname
if envconfig.description:
message += " - " + envconfig.description
print("::group::tox: " + message)
def parse_config(config):
# type: (Dict[str, Dict[str, str]]) -> Dict[str, Dict[str, Any]]
"""Parse gh-actions section in tox.ini"""
config_python = parse_dict(config.get("gh-actions", {}).get("python", ""))
config_env = {
name: {k: split_env(v) for k, v in parse_dict(conf).items()}
for name, conf in config.get("gh-actions:env", {}).items()
}
# Example of split_env:
# "py{27,38}" => ["py27", "py38"]
return {
"python": {k: split_env(v) for k, v in config_python.items()},
"env": config_env,
}
def get_factors(gh_actions_config, versions):
# type: (Dict[str, Dict[str, Any]], Iterable[str]) -> List[str]
"""Get a list of factors"""
factors = [] # type: List[List[str]]
for version in versions:
if version in gh_actions_config["python"]:
show_deprecation_warning_for_old_style_pypy_config(version)
verbosity2("got factors for Python version: {}".format(version))
factors.append(gh_actions_config["python"][version])
break # Shouldn't check remaining versions
for env, env_config in gh_actions_config.get("env", {}).items():
if env in os.environ:
env_value = os.environ[env]
if env_value in env_config:
factors.append(env_config[env_value])
return [x for x in map(lambda f: "-".join(f), product(*factors)) if x]
def show_deprecation_warning_for_old_style_pypy_config(version):
# type: (str) -> None
if version not in {"pypy2", "pypy3"}:
return
warning(
"""PendingDeprecationWarning
Support of old-style PyPy config keys will be removed in tox-gh-actions v3.
Please use "pypy-2" and "pypy-3" instead of "pypy2" and "pypy3".
Example of tox.ini:
[gh-actions]
python =
pypy-2: pypy2
pypy-3: pypy3
# The followings won't work with tox-gh-actions v3
# pypy2: pypy2
# pypy3: pypy3
"""
)
def get_envlist_from_factors(envlist, factors):
# type: (Iterable[str], Iterable[str]) -> List[str]
"""Filter envlist using factors"""
result = []
for env in envlist:
for factor in factors:
env_facts = env.split("-")
if all(f in env_facts for f in factor.split("-")):
result.append(env)
break
return result
def get_python_version_keys():
# type: () -> List[str]
"""Get Python version in string for getting factors from gh-action's config
Examples:
- CPython 2.7.z => [2.7, 2]
- CPython 3.8.z => [3.8, 3]
- PyPy 2.7 (v7.3.z) => [pypy-2.7, pypy-2, pypy2]
- PyPy 3.6 (v7.3.z) => [pypy-3.6, pypy-3, pypy3]
- Pyston based on Python CPython 3.8.8 (v2.2) => [pyston-3.8, pyston-3]
Support of "pypy2" and "pypy3" is for backward compatibility with
tox-gh-actions v2.2.0 and before.
"""
major_version = str(sys.version_info[0])
major_minor_version = ".".join([str(i) for i in sys.version_info[:2]])
if "PyPy" in sys.version:
return [
"pypy-" + major_minor_version,
"pypy-" + major_version,
"pypy" + major_version,
]
elif hasattr(sys, "pyston_version_info"): # Pyston
return [
"pyston-" + major_minor_version,
"pyston-" + major_version,
]
else:
# Assume this is running on CPython
return [major_minor_version, major_version]
def is_running_on_actions():
# type: () -> bool
"""Returns True when running on GitHub Actions"""
# See the following document on which environ to use for this purpose.
# https://docs.github.com/en/free-pro-team@latest/actions/reference/environment-variables#default-environment-variables
return os.environ.get("GITHUB_ACTIONS") == "true"
def is_running_on_container():
# type: () -> bool
"""Check whether tox is running on a container or not
Only Linux containers are supported.
"""
cgroup_path = "/proc/1/cgroup"
if os.path.exists(cgroup_path):
with open(cgroup_path) as f:
for line in f:
if "containerd" in line:
return True
return False
def is_log_grouping_enabled(config):
# type: (Config) -> bool
"""Returns True when the plugin should enable log line grouping
This plugin won't enable grouping when both --parallel and --parallel-live are
enabled because log lines from different environments will be mixed.
"""
if not is_running_on_actions():
return False
if config.option.parallel > 1 and config.option.parallel_live:
return False
return True
def is_env_specified(config):
# type: (Config) -> bool
"""Returns True when environments are explicitly given"""
if os.environ.get("TOXENV"):
# When TOXENV is a non-empty string
return True
elif config.option.env is not None:
# When command line argument (-e) is given
return True
return False
def get_problem_matcher_file_path():
# type: () -> str
return str(importlib_resources.files("tox_gh_actions") / "matcher.json")
def get_problem_matcher_owners():
# type: () -> List[str]
with open(get_problem_matcher_file_path()) as f:
matcher = json.load(f)
return [m["owner"] for m in matcher["problemMatcher"]]
# The following function was copied from
# https://github.com/tox-dev/tox-travis/blob/0.12/src/tox_travis/utils.py#L11-L32
# which is licensed under MIT LICENSE
# https://github.com/tox-dev/tox-travis/blob/0.12/LICENSE
def parse_dict(value):
# type: (str) -> Dict[str, str]
"""Parse a dict value from the tox config.
.. code-block: ini
[travis]
python =
2.7: py27, docs
3.5: py{35,36}
With this config, the value of ``python`` would be parsed
by this function, and would return::
{
'2.7': 'py27, docs',
'3.5': 'py{35,36}',
}
"""
lines = [line.strip() for line in value.strip().splitlines()]
pairs = [line.split(":", 1) for line in lines if line]
return dict((k.strip(), v.strip()) for k, v in pairs)