taskiq-asyncpg 0.3.2

Asyncpg and PostgreSQL integration for taskiq

TaskIQ - Asyncpg

TaskIQ-Asyncpg is a plugin for taskiq that adds a new result backend based on PostgreSQL and Asyncpg.

Installation

To use this project you must have installed core taskiq library:

pip install taskiq

This project can be installed using pip:

pip install taskiq-asyncpg

using poetry:

poetry add taskiq-asyncpg

using rye:

rye add taskiq-asyncpg

Usage

Let's see the example with the redis broker and PostgreSQL Asyncpg result backend:

# broker.py
import asyncio

from taskiq_redis import ListQueueBroker
from taskiq_asyncpg import AsyncpgResultBackend

asyncpg_result_backend = AsyncpgResultBackend(
    dsn="postgres://postgres:postgres@localhost:5432/postgres",
)

# Or you can use PubSubBroker if you need broadcasting
broker = ListQueueBroker(
    url="redis://localhost:6379",
    result_backend=asyncpg_result_backend,
)


@broker.task
async def best_task_ever() -> None:
    """Solve all problems in the world."""
    await asyncio.sleep(5.5)
    print("All problems are solved!")


async def main():
    await broker.startup()
    task = await best_task_ever.kiq()
    print(await task.wait_result())
    await broker.shutdown()


if __name__ == "__main__":
    asyncio.run(main())

AsyncpgResultBackend configuration

• dsn: connection string to PostgreSQL.
• keep_results: flag to not remove results from Redis after reading.
• table_name: name of the table in PostgreSQL to store TaskIQ results.
• field_for_task_id: type of a field for task_id, you may need it if you want to have length of task_id more than 255 symbols.
• serializer: type of TaskiqAsyncpgSerializer default is PickleSerializer
• **connect_kwargs: additional connection parameters, you can read more about it in Asyncpg repository.