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消息队列 RocketMQ版

消息队列 RocketMQ版

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Python SDK
普通消息
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普通消息
火山引擎消息队列 RocketMQ 5.x 版本提供同步发送、异步发送两种方式来发送普通消息。本文介绍如何通过不同方式发送普通消息,发送普通消息前请在控制台创建普通消息类型 Topic。​
同步发送消息​
同步发送是指消息发送方发出一条消息后,会在收到服务端返回响应之后才发下一条消息的通讯方式。一般用于较为重要的消息发送场景。​
同步发送方式发送普通消息的示例代码如下。​
​
from rocketmq import ClientConfiguration, Credentials, Message, Producer​
​
if __name__ == '__main__':​
# 设置为您从火山引擎消息队列 RocketMQ版控制台获取的接入点信息,类似"{INSTANCE_ID}.rocketmq.ivolces.com:8080"。​
endpoints = "rocketmq-xxxxx:8080"​
# 根据实例支持的认证方式,填写对应的身份认证信息:​
# 密钥管理:第一个参数为 AccessKey ID,第二个参数为 AccessKey Secret。​
# 权限管理:第一个参数为 ACL 用户名,第二个参数为 ACL 密码。​
credentials = Credentials("xxxx", "xxxx")​
config = ClientConfiguration(endpoints, credentials)​
topic = "xxxx" # Topic 名称。​
producer = Producer(config, (topic,))​
​
try:​
producer.startup()​
try:​
msg = Message()​
msg.topic = topic​
msg.body = "hello, rocketmq.".encode('utf-8')​
msg.tag = "rocketmq-send-message"​
msg.keys = "send_sync"​
msg.add_property("send", "sync")​
res = producer.send(msg)​
print(f"{producer.__str__()} send message success. {res}")​
producer.shutdown()​
print(f"{producer.__str__()} shutdown.")​
except Exception as e:​
print(f"normal producer example raise exception: {e}")​
producer.shutdown()​
except Exception as e:​
print(f"{producer.__str__()} startup raise exception: {e}")​
producer.shutdown()​
​
异步发送消息​
异步发送是指发送方发出一条消息后,不等服务端返回响应,接着发送下一条消息的通讯方式。异步发送可以避免线程阻塞,允许程序继续执行其他任务,从而提高系统的吞吐量和性能。​
异步发送方式发送普通消息的示例代码如下。​
​
from rocketmq import ClientConfiguration, Credentials, Message, Producer​
​
def handle_send_result(result_future):​
try:​
res = result_future.result()​
print(f"async send message success, {res}")​
except Exception as exception:​
print(f"async send message failed, raise exception: {exception}")​
​
​
if __name__ == '__main__':​
# 设置为您从火山引擎消息队列 RocketMQ版控制台获取的接入点信息,类似"{INSTANCE_ID}.rocketmq.ivolces.com:8080"。​
endpoints = "rocketmq-xxxxx:8080"​
# 根据实例支持的认证方式,填写对应的身份认证信息:​
# 密钥管理:第一个参数为 AccessKey ID,第二个参数为 AccessKey Secret。​
# 权限管理:第一个参数为 ACL 用户名,第二个参数为 ACL 密码。​
credentials = Credentials("xxxx", "xxxx")​
config = ClientConfiguration(endpoints, credentials)​
topic = "xxxx" # Topic 名称。​
producer = Producer(config, (topic,))​
​
try:​
producer.startup()​
try:​
for i in range(10):​
msg = Message()​
msg.topic = topic​
msg.body = "hello, rocketmq.".encode('utf-8')​
msg.tag = "rocketmq-send-message"​
msg.keys = "send_async"​
msg.add_property("send", "async")​
send_result_future = producer.send_async(msg)​
send_result_future.add_done_callback(handle_send_result)​
except Exception as e:​
print(f"async producer{producer.__str__()} send message raise exception: {e}")​
producer.shutdown()​
except Exception as e:​
print(f"{producer.__str__()} startup raise exception: {e}")​
producer.shutdown()​
​
订阅普通消息​
RocketMQ 5.x 支持两种消费模式,分别为 Push Consumer 和 Simple Consumer。前者为服务端推送消息,后者为主动拉取消息,Python 5.x SDK 仅支持 Simple Consumer。​
Simple Consumer 消费示例代码如下:​
​
from rocketmq import ClientConfiguration, Credentials, SimpleConsumer​
​
if __name__ == '__main__':​
# 设置为您从火山引擎消息队列 RocketMQ版控制台获取的接入点信息,类似"{INSTANCE_ID}.rocketmq.ivolces.com:8080"。​
endpoints = "rocketmq-xxxxx:8080"​
# 根据实例支持的认证方式,填写对应的身份认证信息:​
# 密钥管理:第一个参数为 AccessKey ID,第二个参数为 AccessKey Secret。​
# 权限管理:第一个参数为 ACL 用户名,第二个参数为 ACL 密码。​
credentials = Credentials("xxxx", "xxxx")​
config = ClientConfiguration(endpoints, credentials)​
topic = "xxxx" # Topic 名称。​
simple_consumer = SimpleConsumer(config, "groupName") # group name​
try:​
simple_consumer.startup()​
try:​
simple_consumer.subscribe(topic)​
# use tag filter​
# simple_consumer.subscribe(topic, FilterExpression("tag"))​
while True:​
try:​
messages = simple_consumer.receive(32, 15)​
if messages is not None:​
print(f"{simple_consumer.__str__()} receive {len(messages)} messages.")​
for msg in messages:​
simple_consumer.ack(msg)​
print(f"{simple_consumer.__str__()} ack message:[{msg.message_id}].")​
except Exception as e:​
print(f"receive or ack message raise exception: {e}")​
except Exception as e:​
print(f"{simple_consumer.__str__()} subscribe topic:{topic} raise exception: {e}")​
simple_consumer.shutdown()​
except Exception as e:​
print(f"{simple_consumer.__str__()} startup raise exception: {e}")​
simple_consumer.shutdown()​
​
​
最近更新时间:2026.08.26 15:19:56
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