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# Copyright (c) 2023 Egor Tensin <egor@tensin.name>
# This file is part of the "cimple" project.
# For details, see https://github.com/egor-tensin/cimple.
# Distributed under the MIT License.
from contextlib import contextmanager
import logging
import logging.config
import logging.handlers
import multiprocessing as mp
@contextmanager
def child_logging_thread():
# Delegating logging to the parent logger.
ctx = mp.get_context('spawn')
queue = ctx.Queue()
listener = logging.handlers.QueueListener(queue, logging.getLogger())
listener.start()
try:
yield queue
finally:
listener.stop()
@contextmanager
def configure_logging_in_child(queue):
config = {
'version': 1,
'handlers': {
'sink': {
'class': 'logging.handlers.QueueHandler',
'queue': queue,
},
},
'root': {
'handlers': ['sink'],
'level': 'DEBUG',
},
}
logging.config.dictConfig(config)
try:
yield
except Exception as e:
logging.exception(e)
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