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from typing import List, Type, cast
from asgiref.sync import async_to_sync
from django.apps import apps
from django.core.management.base import BaseCommand
from core.models import Config
from stator.models import StatorModel
from stator.runner import StatorRunner
class Command(BaseCommand):
help = "Runs a Stator runner"
def add_arguments(self, parser):
parser.add_argument(
"--concurrency",
"-c",
type=int,
default=30,
help="How many tasks to run at once",
)
parser.add_argument(
"--liveness-file",
type=str,
default=None,
help="A file to touch at least every 30 seconds to say the runner is alive",
)
parser.add_argument(
"--schedule-interval",
"-s",
type=int,
default=30,
help="How often to run cleaning and scheduling",
)
parser.add_argument("model_labels", nargs="*", type=str)
def handle(
self,
model_labels: List[str],
concurrency: int,
liveness_file: str,
schedule_interval: int,
*args,
**options
):
# Cache system config
Config.system = Config.load_system()
# Resolve the models list into names
models = cast(
List[Type[StatorModel]],
[apps.get_model(label) for label in model_labels],
)
if not models:
models = StatorModel.subclasses
print("Running for models: " + " ".join(m._meta.label_lower for m in models))
# Run a runner
runner = StatorRunner(
models,
concurrency=concurrency,
liveness_file=liveness_file,
schedule_interval=schedule_interval,
)
async_to_sync(runner.run)()
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