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import logging
import sys
from asgiref.local import Local
from django.core.signals import setting_changed
from django.dispatch import Signal, receiver
from .base import TaskResultStatus
logger = logging.getLogger("django.tasks")
task_enqueued = Signal()
task_finished = Signal()
task_started = Signal()
@receiver(setting_changed)
def clear_tasks_handlers(*, setting, **kwargs):
"""Reset the connection handler whenever the settings change."""
if setting == "TASKS":
from . import task_backends
task_backends._settings = task_backends.settings = (
task_backends.configure_settings(None)
)
task_backends._connections = Local()
@receiver(task_enqueued)
def log_task_enqueued(sender, task_result, **kwargs):
logger.debug(
"Task id=%s path=%s enqueued backend=%s",
task_result.id,
task_result.task.module_path,
task_result.backend,
)
@receiver(task_started)
def log_task_started(sender, task_result, **kwargs):
logger.info(
"Task id=%s path=%s state=%s",
task_result.id,
task_result.task.module_path,
task_result.status,
)
@receiver(task_finished)
def log_task_finished(sender, task_result, **kwargs):
logger.log(
(
logging.ERROR
if task_result.status == TaskResultStatus.FAILED
else logging.INFO
),
"Task id=%s path=%s state=%s",
task_result.id,
task_result.task.module_path,
task_result.status,
# Signal is sent inside exception handlers, so exc_info() is available.
exc_info=sys.exc_info(),
)
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