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import sys
# pylint: disable=invalid-name
# pylint: disable=redefined-outer-name
# DO NOT INITIALIZE DIRECTLY -- This is intended to be a singleton.
class _ExitHook(object):
"""Plumb all sys.exit through this object so that we can access the exit code in atexit."""
def __init__(self):
self.exit_code = 0
self._orig_exit = sys.exit
sys.exit = self.exit
def __del__(self):
sys.exit = self._orig_exit
def exit(self, code=0):
self.exit_code = code
self._orig_exit(code)
SINGLETON_TOOLING_METRICS_EXIT_HOOK = None
# Always use this method when initializing _ExitHook -- This guarantees you are using the singleton
# initialize the exit hook as early as possible to ensure we capture the error.
def initialize_exit_hook() -> None:
"""Initialize the exit hook."""
try:
if not SINGLETON_TOOLING_METRICS_EXIT_HOOK:
SINGLETON_TOOLING_METRICS_EXIT_HOOK = _ExitHook()
except UnboundLocalError as _:
SINGLETON_TOOLING_METRICS_EXIT_HOOK = _ExitHook()
return SINGLETON_TOOLING_METRICS_EXIT_HOOK
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