75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
import aio_pika
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from config import RABBITMQ_URI
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async def setup_multi_queue_balance(
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exchange_name="demo.direct.multi.queue",
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queue_prefix="task.queue.",
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route_prefix="route.",
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queue_count=3 # 3个队列
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):
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"""创建多个队列，每个队列绑定不同的路由键"""
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connection = await aio_pika.connect_robust(RABBITMQ_URI)
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channel = await connection.channel()
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# 声明Direct交换器
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await channel.declare_exchange(
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exchange_name,
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aio_pika.ExchangeType.DIRECT,
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durable=True
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)
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# 创建N个队列，每个队列绑定独立的路由键
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for i in range(queue_count):
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queue_name = f"{queue_prefix}{i + 1}"
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route_key = f"{route_prefix}{i + 1}"
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# 声明队列
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queue = await channel.declare_queue(
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queue_name,
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durable=True,
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auto_delete=False
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)
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# 绑定路由键（每个队列对应唯一路由键）
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await queue.bind(exchange_name, routing_key=route_key)
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print(f"队列 {queue_name} 绑定路由键：{route_key}")
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await connection.close()
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class BalancedProducer:
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def __init__(self, exchange_name="demo.direct.multi.queue", queue_count=3):
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self.exchange_name = exchange_name
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self.queue_count = queue_count
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self.current_index = 0 # 轮询索引
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async def connect(self):
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"""建立连接（可复用连接提升性能）"""
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self.connection = await aio_pika.connect_robust(RABBITMQ_URI)
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self.channel = await self.connection.channel()
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self.exchange = await self.channel.declare_exchange(
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self.exchange_name,
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aio_pika.ExchangeType.DIRECT,
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durable=True
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)
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async def publish(self, message: str):
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"""轮询选择路由键，发送消息到对应的队列"""
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# 轮询算法：每次发送后切换到下一个路由键
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self.current_index = (self.current_index + 1) % self.queue_count
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route_key = f"route.{self.current_index + 1}" # 对应 route_1/2/3
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message_obj = aio_pika.Message(
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body=message.encode("utf-8"),
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delivery_mode=aio_pika.DeliveryMode.PERSISTENT
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)
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await self.exchange.publish(message_obj, routing_key=route_key)
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print(f"已发送消息：{message}（路由到 {route_key}）")
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async def close(self):
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"""关闭连接"""
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await self.connection.close()
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