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Copy pathconsumer.py
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56 lines (46 loc) · 1.45 KB
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#!/usr/bin/env python3
"""
Python 消费者：从 Kafka 消费消息
可接收来自 Go 生产者 (go-queue kq) 发送的消息
"""
import json
import signal
import sys
from kafka import KafkaConsumer
from kafka.errors import KafkaError
BROKERS = ["127.0.0.1:9092"]
TOPIC = "go-python-topic"
GROUP_ID = "python-consumer-group"
def main():
consumer = KafkaConsumer(
TOPIC,
bootstrap_servers=BROKERS,
group_id=GROUP_ID,
auto_offset_reset="earliest",
value_deserializer=lambda m: m.decode("utf-8"),
)
def shutdown(sig, frame):
consumer.close()
print("\n消费者已停止")
sys.exit(0)
signal.signal(signal.SIGINT, shutdown)
signal.signal(signal.SIGTERM, shutdown)
print("Python Consumer 已启动，等待消息 (Ctrl+C 退出)")
print(f"Topic: {TOPIC}")
print("---")
try:
for message in consumer:
try:
msg = json.loads(message.value)
source = msg.get("source", "unknown")
content = msg.get("content", message.value)
ts = msg.get("timestamp", "")
print(f"[Python Consumer] 收到来自 {source}: {content} (时间: {ts})")
except json.JSONDecodeError:
print(f"[Python Consumer] 收到: {message.value}")
except KafkaError as e:
print(f"Kafka 错误: {e}")
finally:
consumer.close()
if __name__ == "__main__":
main()