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import logging
from asgiref.local import Local
from django.core.signals import setting_changed
from django.dispatch import Signal, receiver
from django_tasks import BaseTaskBackend, TaskResult, TaskResultStatus
task_enqueued = Signal()
task_finished = Signal()
task_started = Signal()
logger = logging.getLogger("django_tasks")
@receiver(setting_changed)
def clear_tasks_handlers(*, setting: str, **kwargs: dict) -> None:
"""
Reset the connection handler whenever the settings change.
"""
if setting == "TASKS":
from django_tasks import task_backends
task_backends._settings = task_backends.settings = ( # type:ignore[attr-defined]
task_backends.configure_settings(None)
)
task_backends._connections = Local() # type:ignore[attr-defined]
@receiver(task_enqueued)
def log_task_enqueued(
sender: type[BaseTaskBackend], task_result: TaskResult, **kwargs: dict
) -> None:
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: type[BaseTaskBackend], task_result: TaskResult, **kwargs: dict
) -> None:
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: type[BaseTaskBackend], task_result: TaskResult, **kwargs: dict
) -> None:
if task_result.status == TaskResultStatus.FAILED:
# Use exception to integrate with error monitoring tools
log_method = logger.exception
else:
log_method = logger.info
log_method(
"Task id=%s path=%s state=%s",
task_result.id,
task_result.task.module_path,
task_result.status,
)
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