cangling-broker (Python)
Producer and consumer for cangling-broker. Same contract as the Java client: AcceptMessages to publish, Subscribe to consume, optional Register metadata, CL_BROKER_AUTH_TOKEN on every RPC.
Install
pip install cangling-broker
From this tree:
pip install -e python
Use
from cangling_broker import SatwayClient, SubscribeOptions
with SatwayClient.connect("127.0.0.1:7500", "change-me") as client:
client.send("cangling-test", "hello")
with client.subscribe(
SubscribeOptions(topic="cangling-test", name="worker-1"),
lambda message: print(message.id, message.payload),
):
...
SatwayClient.connect(broker) also reads CL_BROKER_AUTH_TOKEN from the environment.
Batch-set topic delivery (single = one consumer, broadcast = every live stream) and persistence (persistent = queue for later, ephemeral = drop if nobody is subscribed):
from cangling_broker import TopicConfig
client.configure_topics([
TopicConfig("jobs", "single"),
TopicConfig("alerts", "broadcast"),
TopicConfig("live-events", "broadcast", "ephemeral"),
])
print(client.list_topics())
Existing Kafka senders can keep send(topic, value) / flush():
# from kafka import KafkaProducer
from cangling_broker import KafkaProducer
producer = KafkaProducer(bootstrap_servers="127.0.0.1:7500")
producer.send(topic, msg)
producer.flush()
# consume
python python/examples/consumer.py --broker 127.0.0.1:7500 --topic cangling-test --name py-s0 --token change-me
# produce
python python/examples/producer.py --broker 127.0.0.1:7500 --topic cangling-test --text hello --count 1 --token change-me
Publish to PyPI
CI on tag v* builds the package and uploads with pypa/gh-action-pypi-publish. Set repository secret PYPI_API_TOKEN.
cd python
python generate_proto.py
python -m build
1 maintainer
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