rabbitMQ tipic 模式
RabbitMQ消息队列(八)-通过Topic主题模式分发消息(.Net Core版)
前两章我们讲了RabbitMQ的direct模式和fanout模式,本章介绍topic主题模式的应用。如果对direct模式下通过routingkey来匹配消息的模式已经有一定了解那fanout也很好理解。简单的可以理解成direct是通过routingkey精准匹配的,而topic是通过routingkey来模糊匹配。
在topic模式下支持两个特殊字符的匹配。
* (星号) 代表任意 一个单词 # (井号) 0个或者多个单词
注意:上面说的是单词不是字符。
如下图所示,RabbitMQ direct模式通过RoutingKey来精准匹配,RoutingKey为red的投递到Queue1,RoutingKey为black和white的投递到Queue2。
我们可以假设一个场景,我们要做一个日志模块来收集处理不同的日志,日志区分包含三个维度的标准:模块、日志紧急程度、日志重要程度。模块分为:red、black、white;紧急程度分为:critical、normal;把重要程度分为:medium、low、high在RoutingKey字段中我们把这三个维度通过两个“.“连接起来。
现在我们需要对black模块,紧急程度为critical,重要程度为high的日志分配到队列1打印到屏幕;对所以模块重要程度为high的日志和white紧急程度为critical的日志发送到队列2持久化到硬盘。如下示例:
RoutingKey为“black.critical.high”的日志会投递到queue1和queue2,。
RoutingKey为“red.critical.high”的日志会只投递到queue2。
RoutingKey为“white.critical.high”的日志会投递到queue2,并且虽然queue2的两个匹配规则都符合但只会向queue2投递一份。
新建TopicProduct用来发布三种routingkey的消息。
using System; using System.Text; using RabbitMQ.Client; using RabbitMQ.Client.Events; namespace TopicProduct { class Program { static void Main(string[] args) { String exchangeName = "wytExchangeTopic"; String routeKeyName1 = "black.critical.high"; String routeKeyName2 = "red.critical.high"; String routeKeyName3 = "white.critical.high"; String message1 = "black-critical-high!"; String message2 = "red-critical-high!"; String message3 = "white-critical-high!"; ConnectionFactory factory = new ConnectionFactory(); factory.HostName = "192.168.63.129"; factory.Port = 5672; factory.VirtualHost = "/wyt"; factory.UserName = "wyt"; factory.Password = "wyt"; using (IConnection connection=factory.CreateConnection()) { using (IModel channel=connection.CreateModel()) { channel.ExchangeDeclare(exchange: exchangeName, type: "topic", durable: true, autoDelete: false, arguments: null); IBasicProperties properties = channel.CreateBasicProperties(); properties.Persistent = true; Byte[] body1 = Encoding.UTF8.GetBytes(message1); Byte[] body2 = Encoding.UTF8.GetBytes(message2); Byte[] body3 = Encoding.UTF8.GetBytes(message3); //消息推送 channel.BasicPublish(exchange: exchangeName, routingKey:routeKeyName1,basicProperties: properties, body: body1); channel.BasicPublish(exchange: exchangeName, routingKey: routeKeyName2, basicProperties: properties, body: body2); channel.BasicPublish(exchange: exchangeName, routingKey: routeKeyName3, basicProperties: properties, body: body3); Console.WriteLine(" [x] Sent {0}", message1); Console.WriteLine(" [x] Sent {0}", message2); Console.WriteLine(" [x] Sent {0}", message3); } } Console.WriteLine(" Press [enter] to exit."); Console.ReadLine(); } } }
using System; using System.Text; using RabbitMQ.Client; using RabbitMQ.Client.Events; namespace TopicProduct { class Program { static void Main(string[] args) { String exchangeName = "wytExchangeTopic"; String routeKeyName1 = "black.critical.high"; String routeKeyName2 = "red.critical.high"; String routeKeyName3 = "white.critical.high"; String message1 = "black-critical-high!"; String message2 = "red-critical-high!"; String message3 = "white-critical-high!"; ConnectionFactory factory = new ConnectionFactory(); factory.HostName = "192.168.63.129"; factory.Port = 5672; factory.VirtualHost = "/wyt"; factory.UserName = "wyt"; factory.Password = "wyt"; using (IConnection connection=factory.CreateConnection()) { using (IModel channel=connection.CreateModel()) { channel.ExchangeDeclare(exchange: exchangeName, type: "topic", durable: true, autoDelete: false, arguments: null); IBasicProperties properties = channel.CreateBasicProperties(); properties.Persistent = true; Byte[] body1 = Encoding.UTF8.GetBytes(message1); Byte[] body2 = Encoding.UTF8.GetBytes(message2); Byte[] body3 = Encoding.UTF8.GetBytes(message3); //消息推送 channel.BasicPublish(exchange: exchangeName, routingKey:routeKeyName1,basicProperties: properties, body: body1); channel.BasicPublish(exchange: exchangeName, routingKey: routeKeyName2, basicProperties: properties, body: body2); channel.BasicPublish(exchange: exchangeName, routingKey: routeKeyName3, basicProperties: properties, body: body3); Console.WriteLine(" [x] Sent {0}", message1); Console.WriteLine(" [x] Sent {0}", message2); Console.WriteLine(" [x] Sent {0}", message3); } } Console.WriteLine(" Press [enter] to exit."); Console.ReadLine(); } } }
新建TopicCustomerA接收一种消息
using System; using System.Text; using RabbitMQ.Client; using RabbitMQ.Client.Events; namespace TopicCustomerA { class Program { static void Main(string[] args) { String exchangeName = "wytExchangeTopic"; String routeKeyName1 = "black.critical.high"; ConnectionFactory factory = new ConnectionFactory(); factory.HostName = "192.168.63.129"; factory.Port = 5672; factory.VirtualHost = "/wyt"; factory.UserName = "wyt"; factory.Password = "wyt"; using (IConnection connection=factory.CreateConnection()) { using (IModel channel=connection.CreateModel()) { channel.ExchangeDeclare(exchange: exchangeName, type: "topic", durable: true, autoDelete: false, arguments: null); String queueName = channel.QueueDeclare().QueueName; channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: routeKeyName1, arguments: null); EventingBasicConsumer consumer = new EventingBasicConsumer(channel); consumer.Received += (model, ea) => { var body = ea.Body; var message = Encoding.UTF8.GetString(body); var routingKey = ea.RoutingKey; Console.WriteLine(" [x] Received '{0}':'{1}'", routingKey, message); channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false); }; channel.BasicConsume(queue: queueName, autoAck: false, consumer: consumer); Console.WriteLine(" Press [enter] to exit."); Console.ReadLine(); } } } } }
using System; using System.Text; using RabbitMQ.Client; using RabbitMQ.Client.Events; namespace TopicCustomerA { class Program { static void Main(string[] args) { String exchangeName = "wytExchangeTopic"; String routeKeyName1 = "black.critical.high"; ConnectionFactory factory = new ConnectionFactory(); factory.HostName = "192.168.63.129"; factory.Port = 5672; factory.VirtualHost = "/wyt"; factory.UserName = "wyt"; factory.Password = "wyt"; using (IConnection connection=factory.CreateConnection()) { using (IModel channel=connection.CreateModel()) { channel.ExchangeDeclare(exchange: exchangeName, type: "topic", durable: true, autoDelete: false, arguments: null); String queueName = channel.QueueDeclare().QueueName; channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: routeKeyName1, arguments: null); EventingBasicConsumer consumer = new EventingBasicConsumer(channel); consumer.Received += (model, ea) => { var body = ea.Body; var message = Encoding.UTF8.GetString(body); var routingKey = ea.RoutingKey; Console.WriteLine(" [x] Received '{0}':'{1}'", routingKey, message); channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false); }; channel.BasicConsume(queue: queueName, autoAck: false, consumer: consumer); Console.WriteLine(" Press [enter] to exit."); Console.ReadLine(); } } } } }
新建TopicCustomerB接收两种消息
using System; using System.Text; using RabbitMQ.Client; using RabbitMQ.Client.Events; namespace TopicCustomerB { class Program { static void Main(string[] args) { String exchangeName = "wytExchangeTopic"; String routeKeyName1 = "red.critical.*"; String routeKeyName2 = "white.critical.*"; ConnectionFactory factory = new ConnectionFactory(); factory.HostName = "192.168.63.129"; factory.Port = 5672; factory.VirtualHost = "/wyt"; factory.UserName = "wyt"; factory.Password = "wyt"; using (IConnection connection = factory.CreateConnection()) { using (IModel channel = connection.CreateModel()) { channel.ExchangeDeclare(exchange: exchangeName, type: "topic", durable: true, autoDelete: false, arguments: null); String queueName = channel.QueueDeclare().QueueName; channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: routeKeyName1, arguments: null); channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: routeKeyName2, arguments: null); EventingBasicConsumer consumer = new EventingBasicConsumer(channel); consumer.Received += (model, ea) => { var body = ea.Body; var message = Encoding.UTF8.GetString(body); var routingKey = ea.RoutingKey; Console.WriteLine(" [x] Received '{0}':'{1}'", routingKey, message); channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false); }; channel.BasicConsume(queue: queueName, autoAck: false, consumer: consumer); Console.WriteLine(" Press [enter] to exit."); Console.ReadLine(); } } } } }
using System; using System.Text; using RabbitMQ.Client; using RabbitMQ.Client.Events; namespace TopicCustomerB { class Program { static void Main(string[] args) { String exchangeName = "wytExchangeTopic"; String routeKeyName1 = "red.critical.*"; String routeKeyName2 = "white.critical.*"; ConnectionFactory factory = new ConnectionFactory(); factory.HostName = "192.168.63.129"; factory.Port = 5672; factory.VirtualHost = "/wyt"; factory.UserName = "wyt"; factory.Password = "wyt"; using (IConnection connection = factory.CreateConnection()) { using (IModel channel = connection.CreateModel()) { channel.ExchangeDeclare(exchange: exchangeName, type: "topic", durable: true, autoDelete: false, arguments: null); String queueName = channel.QueueDeclare().QueueName; channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: routeKeyName1, arguments: null); channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: routeKeyName2, arguments: null); EventingBasicConsumer consumer = new EventingBasicConsumer(channel); consumer.Received += (model, ea) => { var body = ea.Body; var message = Encoding.UTF8.GetString(body); var routingKey = ea.RoutingKey; Console.WriteLine(" [x] Received '{0}':'{1}'", routingKey, message); channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false); }; channel.BasicConsume(queue: queueName, autoAck: false, consumer: consumer); Console.WriteLine(" Press [enter] to exit."); Console.ReadLine(); } } } } }
先运行TopicCustomerA和TopicCustomerB保持订阅状态。然后执行TopicProduct发布消息。TopicCustomerA和TopicCustomerB收到的消息如下:
rabbitMQ tipic 模式的更多相关文章
- 1.RabbitMq - Work 模式
RabbitMq - Work 模式 一.什么是Work模式 如果有几个消息都需要处理,且每个消息的处理时间很长,仅有一个消费者,那么当它在处理一个消息的时候,其他消息就只有等待. 等待有时候是好的, ...
- Rabbitmq -Publish_Subscribe模式- python编码实现
what is Exchanges ?? Let's quickly go over what we covered in the previous tutorials: A producer is ...
- RabbitMQ事物模式
Rabbit的消息确认机制(事务+confirm)在rabbmitmq中我们可以通过持久化数据解决rabbitmq服务器异常的数据丢失问题问题:生产者将消息发送出去之后消息到底有没有到达rabbitm ...
- RabbitMQ广播模式
广播模式:1对多,produce发送一则消息多个consumer同时收到.注意:广播是实时的,produce只负责发出去,不会管对端是否收到,若发送的时刻没有对端接收,那消息就没了,因此在广播模式下设 ...
- RabbitMQ镜像模式双节点部署时故障转移过程中队列中消息的状态
场景 现有节点Node1和Node2,建立Exchange:yu.exchange,创建队列yu1.queue镜像队列master位于Node1,yu2.queue镜像队列位于Node2,使用topi ...
- 使用rabbitmq rpc 模式
服务器端 安装 ubuntu 16.04 server 安装 rabbitmq-server 设置 apt 源 curl -s https://packagecloud ...
- RabbitMQ工作模式
------------恢复内容开始------------ RabbitMQ基本概念: Producer:生产者(消息的提供者) Consumer:消费者(消息的使用者) Message:消息(程序 ...
- RabbitMQ 消息模式
消息模式实例 视频教程:https://ke.qq.com/course/304104 编写代码前,最好先添加好用户并设置virtual hosts 一.简单模式 1.导入jar包 <depen ...
- 干货!基于SpringBoot的RabbitMQ多种模式队列实战
目录 环境准备 安装RabbitMQ 依赖 连接配置 五种队列模式实现 1 点对点的队列 2 工作队列模式Work Queue 3 路由模式Routing 4 发布/订阅模式Publish/Subsc ...
随机推荐
- 使用开发IDE生成一个springboot工程。
说实话,没办法,大势所趋. 当今天下,大企业,还是小公司,只要有想要更高效率的提高开发效率,能频繁迭代,又影响最小,那么只有使用分布式工程开发. 使用它就因为他快,加载东西,插件快,jar包引入方便. ...
- Java8实战,
Supplier 1, @FunctionalInterfacepublic interface Supplier<T> { 2, T get(); 3, Supplier<A ...
- vue:概要
一.环境 #安装nodejs-官网安装包配置环境变量 node -v #安装webpack npm install webpack -g #安装vue-cli npm install vue-cli ...
- SQL:SQL Broker
-- ============================================= --启用 Broker USE master; GO ALTER DATABASE DEV_AMS S ...
- h5css样式
兼容性前缀: 谷歌:webkit 火狐:moz ie:ms 欧鹏:o选择器: 属性选择器: * = 包含 {href * = 'www'} ^ = 以什么开头 $ = 以什么结尾 伪类选择器: 第一个 ...
- Excel开发VBA学习
1.合并字符串A1&A22.拆分字符串LEFT(A2,SEARCH("-",A2)-1)3.下拉选项Data->Data validation->List 1. ...
- react图片预览插件尝试
npm install react-zmage -S https://blog.csdn.net/Wcharles666/article/details/90262525 启动报错 直接执行 npm ...
- 欢迎使用CSDN的markdown编辑器
以下是蒻鞫第一次打开CSDN-markdown编译器的温馨提示,感觉CSDN好贴心,不作任何用途,仅为纪念,若存在违法侵权行为,请联系留言,立即删除. List item 这里写 欢迎使用Markdo ...
- 数据结构实验之图论十一:AOE网上的关键路径【Bellman_Ford算法】
Problem Description 一个无环的有向图称为无环图(Directed Acyclic Graph),简称DAG图. AOE(Activity On Edge)网:顾名思义,用边 ...
- JAVA基础知识|Serializable
一.序列化和反序列化 序列化:把对象转换为字节序列的过程称为对象的序列化. 反序列化:把字节序列恢复为对象的过程称为对象的反序列化. 将内存中对象的信息保存下来,可以有很多种方式实现这一功能.其中ja ...