Register Celery Class-based Task

Register Celery Class-based Task

In Celery, you can register class-based tasks by using the @app.task decorator or the task method of a Celery instance. Here's how you can register a class-based task using both approaches:

Assuming you have a Celery instance named app:

from celery import Celery, Task # Create a Celery instance app = Celery('myapp') # Configure the Celery instance (add broker and other settings) # Class-based task class MyTask(Task): name = 'myapp.tasks.my_task' # Set a unique name for the task def run(self, arg1, arg2): # Task logic here return f"Result: {arg1 + arg2}" # Register the class-based task using the task method app.task(bind=True)(MyTask)

Or you can use the @app.task decorator:

from celery import Celery, Task # Create a Celery instance app = Celery('myapp') # Configure the Celery instance (add broker and other settings) # Class-based task class MyTask(Task): name = 'myapp.tasks.my_task' # Set a unique name for the task def run(self, arg1, arg2): # Task logic here return f"Result: {arg1 + arg2}" # Register the class-based task using the @app.task decorator @app.task(bind=True) def my_task(self, arg1, arg2): return MyTask().run(arg1, arg2)

In both examples, you create a class MyTask that inherits from celery.Task. You define the run method within the class, which contains the actual logic of your task. The name attribute is set to a unique name for your task.

Then, you use either the app.task decorator or the task method to register the class-based task. In the decorator approach, you define a regular function that creates an instance of your class-based task and calls its run method. In the task method approach, you directly register the class-based task.

Remember to replace 'myapp' with your actual Celery app name and configure the Celery instance with the appropriate broker settings and other configurations.

Examples

  1. "How to register Celery class-based task in Django?"

    • Description: Registering Celery class-based tasks in Django involves defining a class that inherits from celery.Task and registering it with Celery.
    • Code:
      from celery import Celery, Task app = Celery() class MyTask(Task): def run(self, *args, **kwargs): pass # Your task implementation goes here app.register_task(MyTask())

  2. "Celery class-based task registration syntax"

    • Description: Celery provides a straightforward syntax for registering class-based tasks, making it easy to integrate them into your application.
    • Code:
      from celery import Celery, Task app = Celery() class MyTask(Task): def run(self, *args, **kwargs): pass # Your task implementation goes here app.tasks.register(MyTask())

  3. "Defining Celery class-based tasks in Python"

    • Description: Defining Celery class-based tasks allows for structured and reusable task implementations in Python applications.
    • Code:
      from celery import Task class MyTask(Task): def run(self, *args, **kwargs): pass # Your task implementation goes here

  4. "How to handle errors in Celery class-based tasks?"

    • Description: Implementing error handling mechanisms in Celery class-based tasks ensures robustness and fault tolerance in asynchronous operations.
    • Code:
      from celery import Task class MyTask(Task): def run(self, *args, **kwargs): try: # Your task implementation goes here pass except Exception as e: self.retry(exc=e)

More Tags

react-functional-component sequential amazon-ses modulus gdi mfmailcomposeviewcontroller apache-pig combobox soap-client static-content

More Python Questions

More Stoichiometry Calculators

More Animal pregnancy Calculators

More Tax and Salary Calculators

More Physical chemistry Calculators