快速入门中会给出一些基本使用场景下的配置方式,更详细的使用文档请参考用户指南.
如果要执行快速入门介绍中的例子,你需要:
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在pom中添加依赖
<dependency> <groupId>com.weibo</groupId> <artifactId>motan-core</artifactId> <version>0.1.1</version> </dependency> <dependency> <groupId>com.weibo</groupId> <artifactId>motan-transport-netty</artifactId> <version>0.1.1</version> </dependency> <!-- only needed for spring-based features --> <dependency> <groupId>com.weibo</groupId> <artifactId>motan-springsupport</artifactId> <version>0.1.1</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.2.4.RELEASE</version> </dependency>
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为调用方和服务方创建公共接口。
src/main/java/quickstart/FooService.java
package quickstart; public interface FooService { public String hello(String name); }
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编写业务接口逻辑、创建并启动RPC Server。
src/main/java/quickstart/FooServiceImpl.java
package quickstart; public class FooServiceImpl implements FooService { public String hello(String name) { System.out.println(name + " invoked rpc service"); return "hello " + name; } }
src/main/resources/motan_server.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:motan="http://api.weibo.com/schema/motan" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://api.weibo.com/schema/motan http://api.weibo.com/schema/motan.xsd"> <!-- service implemention bean --> <bean id="serviceImpl" class="quickstart.FooServiceImpl" /> <!-- exporting service by Motan --> <motan:service interface="quickstart.FooService" ref="serviceImpl" export="8002" /> </beans>
`src/main/java/quickstart/Server.java`
package quickstart; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Server { public static void main(String[] args) throws InterruptedException { ApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:motan_server.xml"); System.out.println("server start..."); } }
执行Server类中的main函数将会启动Motan服务,并监听8002端口.
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创建并执行RPC Client。
src/main/resources/motan_client.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:motan="http://api.weibo.com/schema/motan" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://api.weibo.com/schema/motan http://api.weibo.com/schema/motan.xsd"> <!-- reference to the remote service --> <motan:referer id="remoteService" interface="quickstart.FooService" directUrl="localhost:8002"/> </beans>
src/main/java/quickstart/Client.java
package quickstart; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Client { public static void main(String[] args) throws InterruptedException { ApplicationContext ctx = new ClassPathXmlApplicationContext("classpath:motan_client.xml"); FooService service = (FooService) ctx.getBean("remoteService"); System.out.println(service.hello("motan")); } }
执行Client类中的main函数将执行一次远程调用,并输出结果。
在集群环境下使用Motan需要依赖外部服务发现组件,目前支持consul或zookeeper。
安装(官方文档)
# 这里以linux为例
wget https://releases.hashicorp.com/consul/0.6.4/consul_0.6.4_linux_amd64.zip
unzip consul_0.6.4_linux_amd64.zip
sudo mv consul /bin
启动(官方文档)
测试环境启动:
consul agent -dev
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在server和client中添加motan-registry-consul依赖
<dependency> <groupId>com.weibo</groupId> <artifactId>motan-registry-consul</artifactId> <version>0.1.1</version> </dependency>
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在server和client的配置文件中分别增加consul registry定义。
<motan:registry regProtocol="consul" name="my_consul" address="127.0.0.1:8500"/>
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在Motan client及server配置改为通过registry服务发现。
client
<motan:referer id="remoteService" interface="quickstart.FooService" registry="my_consul"/>
server
<motan:service interface="quickstart.FooService" ref="serviceImpl" registry="my_consul" export="8002" />
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server程序启动后,需要显式调用心跳开关,注册到consul。
MotanSwitcherUtil.setSwitcherValue(MotanConstants.REGISTRY_HEARTBEAT_SWITCHER, true)
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进入ui后台查看服务是否正常提供调用
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启动client,调用服务
ZooKeeper安装与启动(官方文档)
单机版安装与启动
wget http://mirrors.cnnic.cn/apache/zookeeper/zookeeper-3.4.8/zookeeper-3.4.8.tar.gz
tar zxvf zookeeper-3.4.8.tar.gz
cd zookeeper-3.4.8/conf/
cp zoo_sample.cfg zoo.cfg
cd ../
sh bin/zkServer.sh start
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在server和client中添加motan-registry-zookeeper依赖
<dependency> <groupId>com.weibo</groupId> <artifactId>motan-registry-zookeeper</artifactId> <version>0.1.1</version> </dependency>
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在server和client的配置文件中分别增加zookeeper registry定义。
zookeeper为单节点
<motan:registry regProtocol="zookeeper" name="my_zookeeper" address="127.0.0.1:2181"/>
zookeeper多节点集群
<motan:registry regProtocol="zookeeper" name="my_zookeeper" address="127.0.0.1:2181,127.0.0.1:2182,127.0.0.1:2183"/>
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在Motan client及server配置改为通过registry服务发现。
client
<motan:referer id="remoteService" interface="quickstart.FooService" registry="my_zookeeper"/>
server
<motan:service interface="quickstart.FooService" ref="serviceImpl" registry="my_zookeeper" export="8002" />
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server程序启动后,需要显式调用心跳开关,注册到zookeeper。
MotanSwitcherUtil.setSwitcherValue(MotanConstants.REGISTRY_HEARTBEAT_SWITCHER, true)
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启动client,调用服务