mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-23 05:10:40 +00:00
98 lines
2.5 KiB
Python
98 lines
2.5 KiB
Python
"""Activate coverage at python startup if appropriate.
|
|
|
|
The python site initialisation will ensure that anything we import
|
|
will be removed and not visible at the end of python startup. However
|
|
we minimise all work by putting these init actions in this separate
|
|
module and only importing what is needed when needed.
|
|
|
|
For normal python startup when coverage should not be activated the pth
|
|
file checks a single env var and does not import or call the init fn
|
|
here.
|
|
|
|
For python startup when an ancestor process has set the env indicating
|
|
that code coverage is being collected we activate coverage based on
|
|
info passed via env vars.
|
|
"""
|
|
import os
|
|
import signal
|
|
|
|
active_cov = None
|
|
|
|
|
|
def multiprocessing_start(_):
|
|
cov = init()
|
|
if cov:
|
|
multiprocessing.util.Finalize(None, cleanup, args=(cov,), exitpriority=1000)
|
|
|
|
|
|
try:
|
|
import multiprocessing.util
|
|
except ImportError:
|
|
pass
|
|
else:
|
|
multiprocessing.util.register_after_fork(multiprocessing_start, multiprocessing_start)
|
|
|
|
|
|
def init():
|
|
# Only continue if ancestor process has set everything needed in
|
|
# the env.
|
|
global active_cov
|
|
|
|
cov_source = os.environ.get('COV_CORE_SOURCE')
|
|
cov_config = os.environ.get('COV_CORE_CONFIG')
|
|
cov_datafile = os.environ.get('COV_CORE_DATAFILE')
|
|
cov_branch = True if os.environ.get('COV_CORE_BRANCH') == 'enabled' else None
|
|
|
|
if cov_datafile:
|
|
# Import what we need to activate coverage.
|
|
import coverage
|
|
|
|
# Determine all source roots.
|
|
if cov_source == os.pathsep:
|
|
cov_source = None
|
|
else:
|
|
cov_source = cov_source.split(os.pathsep)
|
|
if cov_config == os.pathsep:
|
|
cov_config = True
|
|
|
|
# Activate coverage for this process.
|
|
cov = active_cov = coverage.Coverage(
|
|
source=cov_source,
|
|
branch=cov_branch,
|
|
data_suffix=True,
|
|
config_file=cov_config,
|
|
auto_data=True,
|
|
data_file=cov_datafile
|
|
)
|
|
cov.load()
|
|
cov.start()
|
|
cov._warn_no_data = False
|
|
cov._warn_unimported_source = False
|
|
return cov
|
|
|
|
|
|
def _cleanup(cov):
|
|
if cov is not None:
|
|
cov.stop()
|
|
cov.save()
|
|
|
|
|
|
def cleanup(cov=None):
|
|
global active_cov
|
|
|
|
_cleanup(cov)
|
|
if active_cov is not cov:
|
|
_cleanup(active_cov)
|
|
active_cov = None
|
|
|
|
|
|
multiprocessing_finish = cleanup # in case someone dared to use this internal
|
|
|
|
|
|
def _sigterm_handler(*_):
|
|
cleanup()
|
|
|
|
|
|
def cleanup_on_sigterm():
|
|
signal.signal(signal.SIGTERM, _sigterm_handler)
|