mirror of
https://github.com/django-q2/django-q2.git
synced 2026-09-23 20:08:12 +08:00
Ilan Steemers
de9ba04602
* Replaces deprecated count with count_documents * Uses new re_path instead of url()
81 lines
2.3 KiB
Python
81 lines
2.3 KiB
Python
from datetime import timedelta
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from time import sleep
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from bson import ObjectId
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from django.utils import timezone
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from pymongo import MongoClient
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from pymongo.errors import ConfigurationError
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from django_q.brokers import Broker
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from django_q.conf import Conf
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def _timeout():
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return timezone.now() - timedelta(seconds=Conf.RETRY)
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class Mongo(Broker):
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def __init__(self, list_key=Conf.PREFIX):
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super(Mongo, self).__init__(list_key)
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self.collection = self.get_collection()
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def __setstate__(self, state):
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super(Mongo, self).__setstate__(state)
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self.collection = self.get_collection()
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@staticmethod
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def get_connection(list_key: str = Conf.PREFIX) -> MongoClient:
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return MongoClient(**Conf.MONGO)
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def get_collection(self):
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if not Conf.MONGO_DB:
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try:
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Conf.MONGO_DB = self.connection.get_default_database().name
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except ConfigurationError:
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Conf.MONGO_DB = "django-q"
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return self.connection[Conf.MONGO_DB][self.list_key]
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def queue_size(self):
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return self.collection.count_documents({"lock": {"$lte": _timeout()}})
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def lock_size(self):
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return self.collection.count_documents({"lock": {"$gt": _timeout()}})
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def purge_queue(self):
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return self.delete_queue()
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def ping(self) -> bool:
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return self.info is not None
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def info(self) -> str:
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if not self._info:
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self._info = f"MongoDB {self.connection.server_info()['version']}"
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return self._info
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def fail(self, task_id):
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self.delete(task_id)
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def enqueue(self, task):
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inserted_id = self.collection.insert_one(
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{"payload": task, "lock": _timeout()}
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).inserted_id
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return str(inserted_id)
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def dequeue(self):
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task = self.collection.find_one_and_update(
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{"lock": {"$lte": _timeout()}}, {"$set": {"lock": timezone.now()}}
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)
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if task:
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return [(str(task["_id"]), task["payload"])]
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# empty queue, spare the cpu
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sleep(Conf.POLL)
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def delete_queue(self):
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return self.collection.drop()
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def delete(self, task_id):
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self.collection.delete_one({"_id": ObjectId(task_id)})
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def acknowledge(self, task_id):
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return self.delete(task_id)
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