This release is a pre-release and may not be stable for production use.
benzene-rabbitmq
Host Benzene Python handlers on RabbitMQ —
a self-hosted consumer and a RabbitMQ-publish outbound client — the same handlers, no rewrite. Depends
only on benzene-core.
pip install benzene-rabbitmq # the binding + testing helpers
pip install "benzene-rabbitmq[rabbitmq]" # + pika for the real clients
from benzene.core import application_from, build_application
from benzene.rabbitmq import RabbitMqConsumerApp, RabbitMqMessageSender, run_consumer_loop
# Inbound: one delivery -> one pipeline invocation -> one scope; ack/log, no reply.
definition, _ = build_application(OrdersStartUp)
app = RabbitMqConsumerApp(application_from(definition))
await run_consumer_loop(app, channel, queue="orders") # channel: a pika channel
# Outbound: publish to an exchange, Benzene topic carried in the `topic` header.
sender = RabbitMqMessageSender("orders-events", host="localhost")
await sender.send_message("orders:created", order, headers={"x-correlation-id": "abc"})
- Consumer — the Benzene topic comes from the
topicheader carried in the delivery's AMQPproperties.headers(the cross-port convention); the other headers are the Benzene headers (UTF-8), the body is the JSON body. One delivery is one scope; there is no response channel, so the result is acknowledge/log only —run_consumer_loopacks the delivery on success (at-least-once) and nacks a failed one for redelivery. A poison delivery can never crash the loop. - Outbound —
RabbitMqMessageSenderimplements thebenzene.core.MessageSenderport overpika(optional extra), forwarding the header dictionary onto the AMQPproperties.headersso correlation/trace propagation rides across the hop.
The binding is duck-typed against pika, so decode, dispatch, and publish are exercised in memory with
fakes — no broker, no SDK. Test through benzene.rabbitmq.testing (a native-delivery builder + a test
host) or the shared harness (create_test_host(StartUp).build_rabbitmq() + send_rabbitmq) — see the
runnable examples/rabbitmq_orders/. Mirrors .NET's Benzene.RabbitMq, and contributes the
benzene.rabbitmq subpackage to the shared benzene namespace.
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