Forest

Overview

基于netty轻量的高性能分布式RPC服务框架。简单，易用，高效。

Features

• 服务端支持多种序列化方式：fastjson，hession，kryo
• 服务端支持多种压缩方式：gzip，snappy
• 服务端支持同时基于jersey暴露restful服务
• 支持注解配置，也支持spring xml配置
• 支持服务发现服务注册
• client端支持多种负载均衡策略和容灾策略
• client内置连接池
• client支持熔断，一个时间段错误次数达到一定阈值，自动熔断
• 基于netty 4.x版本实现，高性能（win 8cpu单机8w+）

Protocol

Quick Start

Add dependencies to pom.

<dependency>
    <groupId>com.zhizus</groupId>
    <artifactId>forest-rpc</artifactId>
    <version>0.0.2</version>
</dependency>

<dependency>
    <groupId>com.zhizus</groupId>
    <artifactId>forest-common</artifactId>
    <version>0.0.2</version>
</dependency>

1.定义接口

通过注解@ServiceProvider暴露服务，通过@MethodProvider暴露方法默认配置，如：压缩方式，序列化方式，客户端超时时间

@ServiceProvider(serviceName = "sampleService", haStrategyType = HaStrategyType.FAIL_FAST,
        loadBalanceType = LoadBalanceType.RANDOM, connectionTimeout = Constants.CONNECTION_TIMEOUT)
public interface SampleService {

    @MethodProvider(methodName = "say")
    String say(String str);

    @MethodProvider(methodName = "echo", serializeType = SerializeType.Hession2, compressType = CompressType.None)
    String echo(String msg);
}

2.实现接口

基于注解@ServiceExport发布服务，基于注解 @MethodExport发布方法，

@Path("/sample")
@ServiceExport
public class SampleServiceImpl implements SampleService {

    /**
     * 支持jersey，可以通过配置打开，同时启动http服务
     *
     * @param str
     * @return
     */
    @Path("/hello/{str}")
    @GET
    @Produces("text/plain")
    @MethodExport
    @Rate(2)
    @Override
    public String say(@PathParam("str") String str) {
        return "say " + str;
    }

    @Interceptor("metricInterceptor")
    @MethodExport
    @Override
    public String echo(String msg) {
        return "echo>>> " + msg;
    }

}

3.服务端开发

spring context 配置：

application.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns="http://www.springframework.org/schema/beans" xmlns:forest="http://api.zhizus.com/schema/forest"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://api.zhizus.com/schema/forest http://api.zhizus.com/schema/forest.xsd">

    <context:component-scan base-package="com.zhizus.forest.demo"/>

    <context:property-placeholder location="classpath:/*.properties"/>


    <forest:registry id="registry" regProtocol="local"  name="registry" address="127.0.0.1:2181"/>
    <!--<forest:registry id="registry" regProtocol="zookeeper" name="registry" address="127.0.0.1:2181"/>-->

    <forest:server id="forestServer" registry="registry" startHttpServer="true"/>

    <forest:interceptors>
        <forest:interceptor id="metricInterceptor" class="com.zhizus.forest.support.MetricInterceptor" auto-match="public *(*)"/>
    </forest:interceptors>


</beans>

Server开发

public class SampleServer {
    public static void main(String[] args) throws Exception {
	new ClassPathXmlApplicationContext(new String[]{"application.xml"});
    }
}

4.客户端开发

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns="http://www.springframework.org/schema/beans"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:forest="http://api.zhizus.com/schema/forest"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd   http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://api.zhizus.com/schema/forest http://api.zhizus.com/schema/forest.xsd">

    <context:component-scan base-package="com.zhizus.forest.demo.client"/>

    <forest:registry id="registry" regProtocol="local" name="registry" address="127.0.0.1:9999"/>

    <forest:referer id="sampleService" interface="com.zhizus.forest.demo.api.SampleService" registry="registry">
        <forest:method name="echo" timeout="5000" serializeType="Fastjson"/>
        <forest:method name="say" timeout="5000" serializeType="Fastjson" compressType="GZIP"/>
    </forest:referer>


</beans>

ApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"application-client.xml"});
     SampleService bean = (SampleService) context.getBean("sampleService");
     String test = bean.say("hello");

Console输出

23:10:10.295 [pool-1-thread-1] INFO MetricInterceptor 34 - methodName:/sampleService/say, current tps:83342, avgTime:0, maxTime:63, minTime:0
23:10:11.298 [pool-1-thread-1] INFO MetricInterceptor 34 - methodName:/sampleService/say, current tps:86271, avgTime:0, maxTime:63, minTime:0
23:10:12.295 [pool-1-thread-1] INFO MetricInterceptor 34 - methodName:/sampleService/say, current tps:86063, avgTime:0, maxTime:63, minTime:0
23:10:13.295 [pool-1-thread-1] INFO MetricInterceptor 34 - methodName:/sampleService/say, current tps:84305, avgTime:0, maxTime:63, minTime:0

更多示例

Documents

• Wiki(中文)

TODO

• 跨语言协议支持
• 服务治理管理后台

License

Forest is released under the Apache License 2.0.