从Django获取任务的状态背景任务

Question

我正在使用Django，我想开始一些后台任务。我找到了“Django后台任务”库。它几乎包含了我需要的所有内容，但我无法找到如何在文档（http://django-background-tasks.readthedocs.io/en/latest/）中的任何位置获取任务（等待/正在运行/已完成）的状态。如果有人能告诉我如何获得任务的状态，这对我非常有帮助。

Answer 1

将任务插入数据库表background_task中，完成后将任务从background_task表移至background_task_completedtask表。您可以使用此信息创建视图以获取所有/特定任务的状态。

例：

from background_task.models import Task 
from background_task.models_completed import CompletedTask 
from datetime import datetime 
from django.utils import timezone 

def get_status(request): 
    now = timezone.now() 

    # pending tasks will have `run_at` column greater than current time. 
    # Similar for running tasks, it shall be 
    # greater than or equal to `locked_at` column. 
    # Running tasks won't work with SQLite DB, 
    # because of concurrency issues in SQLite. 
    pending_tasks_qs = Task.objects.filter(run_at__gt=now) 
    running_tasks_qs = Task.objects.filter(locked_at__gte=now) 

    # Completed tasks goes in `CompletedTask` model. 
    # I have picked all, you can choose to filter based on what you want. 
    completed_tasks_qs = CompletedTask.objects.all() 

    # main logic here to return this as a response. 

    # just for test 
    print (pending_tasks_qs, running_tasks_qs, completed_tasks_qs) 
    return HttpResponse("ok") 

最后，寄存器在urlpatterns的该视图并检查其状态。