JarCasting一个基于netty的轻量级rpc框架，使用方式可参考example。
Features:
- 基于netty实现rpc协议
- 支持端到端的rpc调用
- 支持使用SPI进行功能扩展
GetStart
引入依赖
implementation "com.github.bdqfork:hamal-context:0.1.1"
定义接口，例如UserService
public interface UserService {
User getUser(Long id);
}
在服务端实现接口
public class UserServiceImpl implements UserService {
@Override
public User getUser(Long id) {
User user = new User();
user.setId(id);
user.setUsername("testRpc");
user.setPassword("testpass");
return user;
}
}
初始化上下文，启动服务端
public class Main {
public static void main(String[] args) throws Exception {
ApplicationConfig applicationConfig = new ApplicationConfig("127.0.0.1", 8081, "rpc", "netty");
applicationConfig.setContainer("rpc");
applicationConfig.setDirect(true);
applicationConfig.setLoadbalancer("random");
applicationConfig.setSerilizer("hessian");
Bootstrap bootstrap = new Bootstrap(applicationConfig);
ServiceConfig<UserService> serviceConfig = new ServiceConfig<>(UserService.class);
bootstrap.registerService(new UserServiceImpl(), serviceConfig);
bootstrap.open();
CountDownLatch latch = new CountDownLatch(1);
latch.await();
}
}
客户端同样初始化上下文，但不需要open服务器
public class Main {
public static void main(String[] args) throws Exception {
ApplicationConfig applicationConfig = new ApplicationConfig("127.0.0.1", 8081, "rpc", "netty");
applicationConfig.setContainer("rpc");
applicationConfig.setDirect(true);
applicationConfig.setLoadbalancer("random");
applicationConfig.setSerilizer("hessian");
Bootstrap bootstrap = new Bootstrap(applicationConfig);
ReferenceConfig<?> referenceConfig = new ReferenceConfig<>(UserService.class);
referenceConfig.setConnections(2);
UserService userService = (UserService) bootstrap.getProxy(referenceConfig);
ThreadPoolExecutor executor = new ThreadPoolExecutor(40, 50, 0, TimeUnit.SECONDS, new ArrayBlockingQueue<>(512),
new ThreadPoolExecutor.DiscardPolicy());
while (true) {
executor.execute(() -> {
User user = userService.getUser(1L);
System.out.println(user);
});
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
注册中心
支持使用zookeeper作为注册中心
RegistryConfig registryConfig = new RegistryConfig("zookeeper", "127.0.0.1:8080");
Bootstrap bootstrap = new Bootstrap(applicationConfig, registryConfig);
序列化
支持hessian和json两种序列号方式
applicationConfig.setSerilizer("hessian");
or
applicationConfig.setSerilizer("json");
协议
默认使用基于tcp的自定义rpc协议，支持http协议
ApplicationConfig applicationConfig = new ApplicationConfig("127.0.0.1", 8081, "http", "netty");
todolist:
- 实现服务分组功能
- 实现超时重试策略
- 实现快速失败策略
- 实现常见的负载均衡算法
- 实现Filter
- 支持异步调用
- 添加log信息