celery.py 文件源码

def ready(self):
        # Using a string here means the worker will not have to
        # pickle the object when using Windows.
        app.config_from_object('django.conf:settings')
        installed_apps = [app_config.name for app_config in apps.get_app_configs()]
        app.autodiscover_tasks(lambda: installed_apps, force=True)

        if hasattr(settings, 'RAVEN_CONFIG'):
            # Celery signal registration
            from raven import Client as RavenClient
            from raven.contrib.celery import register_signal as raven_register_signal
            from raven.contrib.celery import register_logger_signal as raven_register_logger_signal

            raven_client = RavenClient(dsn=settings.RAVEN_CONFIG['DSN'])
            raven_register_logger_signal(raven_client)
            raven_register_signal(raven_client)

        if hasattr(settings, 'OPBEAT'):
            from opbeat.contrib.django.models import client as opbeat_client
            from opbeat.contrib.django.models import logger as opbeat_logger
            from opbeat.contrib.django.models import register_handlers as opbeat_register_handlers
            from opbeat.contrib.celery import register_signal as opbeat_register_signal

            try:
                opbeat_register_signal(opbeat_client)
            except Exception as e:
                opbeat_logger.exception('Failed installing celery hook: %s', e)

            if 'opbeat.contrib.django' in settings.INSTALLED_APPS:
                opbeat_register_handlers()