hvuhsg / event-bus

EventBus implementation in python

event-bus

EventBus implementation in python

Examples

sync

from multi_event_bus import EventBus

eb = EventBus(redis_host="127.0.0.1", redis_port=6379)

eb.dispatch("event-name", payload={"num": 1})

eb.subscribe_to("event-name", consumer_id="consumer-1", offset=0)

event, topic = eb.get(consumer_id="consumer-1")  # Blocking

print(event.payload)  # -> {"num": 1}

async

from multi_event_bus import AsyncEventBus

eb = AsyncEventBus(redis_host="127.0.0.1", redis_port=6379)

eb.dispatch("event-name", payload={"num": 1})

eb.subscribe_to("event-name", consumer_id="consumer-2", offset=0)

event, topic = await eb.get(consumer_id="consumer-2")

print(event.payload)  # -> {"num": 1}

register event schema

from multi_event_bus import EventBus

eb = EventBus(redis_host="127.0.0.1", redis_port=6379)

# Enforce json schema of event
json_schema = {
    "type": "object",
    "properties": {"num": {"type": "string"}}
}
eb.register_event_schema("event-name", schema=json_schema)

eb.dispatch("event-name", payload={"num": "7854"})

eb.subscribe_to("event-name", consumer_id="consumer-3", offset=0)

event, topic = eb.get(consumer_id="consumer-3")  # Blocking

print(event.payload)  # -> {"num": "7854"}

Development

scripts

poetry run run_pytest
poetry run run_flake8
poetry run run_mypy
poetry run run_black

run tests

poetry run test

run all (test and black)

poetry run all