python-inbound 1.0.6

An Event Bus framework for event driven systems.

Inbound

Inbound is an asyncio framework for building event-driven systems in Python. It provides a seamless interface for working with different Message Brokers, including In-memory, RabbitMQ, and Kafka.

Features

• Asynchronous Operations: Build scalable and responsive systems with asyncio.
• Multiple Broker Support: Easily switch between In-memory, RabbitMQ, and soon to be more.
• Elegant API: Subscribe to channels, publish events, and listen to event streams with a simple and intuitive interface.
• Serialization Flexibility: Choose between serializers like msgpack and json based on your requirements or bring your own.
• Streamlined Callbacks API: Implement event-based systems quickly and effectively.

Quick Start

Installation

pip install python-inbound

Basic Usage

import asyncio
from inbound import EventBus

async def consume(bus: EventBus):
    async with bus.subscribe("test-channel") as stream:
        async for envelope in stream:
            # Get the event from the envelope
            event = envelope.event
            print(event)
            # After processing the event, acknowledge it
            await envelope.ack()
            # Unless you want to reject the event
            # await envelope.nack()


async def produce(bus: EventBus):
    coros = [
        bus.publish(
            channel="test-channel",
            type="test-event",
            data={"message": f"Hello World {i}"},
        )
        for i in range(20)
    ]
    await asyncio.gather(*coros)

async def main():
    event_bus = EventBus()

    tasks = [asyncio.create_task(consume(event_bus)), asyncio.create_task(produce(event_bus))]
    async with event_bus:
        await asyncio.wait(tasks, return_when=asyncio.FIRST_COMPLETED)

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

Using Callbacks API

import asyncio
from inbound import CallbackGroup, Event, broker_from_url

group = CallbackGroup()

@group.callback("test-channel", "test-event")
def callback(event: Event):
    # Note: Envelopes are automatically acknowledged
    # for callbacks
    print(event)

async def main():
    event_bus = EventBus(broker=broker_from_url("memory://?serializer=msgpack"))
    event_bus.add_group(group)

    async with event_bus:
        for i in range(3):
            await event_bus.publish(
                channel="test-channel",
                type="test-event",
                data={"message": f"Hello World {i}"},
            )
            await asyncio.sleep(0.01)
        await event_bus.wait_until_finished()

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

You can find more examples in the examples directory.

Documentation

For comprehensive documentation, including advanced features and configurations, refer to Link to Documentation.

License

This project is licensed under MIT License.

Support & Feedback

If you encounter any issues or have feedback, please open an issue. We'd love to hear from you!

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