手动实现一款轻量高效的分布式RPC框架

一、概述

手动实现一款轻量，高效的RPC框架，基于TCP的二进制协议实现

二、特征

• 基于netty的主从Reactor模型，NIO通信
• 支持同步，异步，携带回调等调用方式
• 支持spring项目下引入starter包开箱即用，整合spring，实现服务接口透明使用

三、设计

可能对RPC框架性能产生影响的几个因素：

四、使用示例

4.1、spring环境下

maven依赖

<dependency>
    <groupId>com.hex</groupId>
    <artifactId>srpc-spring-boot-starter</artifactId>
    <version>1.1.0</version>
</dependency>

<dependency>
    <groupId>com.hex</groupId>
    <artifactId>srpc-registry-zookeeper</artifactId>
    <version>1.1.0</version>
</dependency>

@SRpcClient(nodes = {"127.0.0.1:9955","127.0.0.1:9956","127.0.0.1:9957"})
public interface HelloService {
    
    String hello(String name);
}

@SRpcRoute
public class HelloServiceImpl implements HelloService {
    @Override
    public String hello(String name) {
        return name + " Hey bro, it's a good day";
    }
}

@ConfigurationProperties(prefix = "srpc.server")
public class RpcServerProperties {
    private Integer port = 9957; //绑定端口
    private Integer businessThreads = 200; //业务处理线程池大小，0为不设置
    private Integer businessQueueSize = 500; //业务线程池队列大小
    private Integer connectionIdleTime = 180;//超过连接空闲时间(秒)未收发数据则关闭连接
    private Integer printConnectionNumInterval = 0; //打印服务端当前连接详情, 时间间隔(秒), 0为不打印
    private Boolean isPrintHearBeatPacketInfo = false; //是否打印心跳包信息

    private CompressType compressType = CompressType.SNAPPY; //压缩算法类型，无需压缩为NONE
    private SerializeType serializeType = SerializeType.PROTOSTUFF; //序列化类型，默认protostuff

    private Integer sendBuf = 65535; //tcp发送缓冲区
    private Integer receiveBuf = 65535; //tcp接收缓冲区
    private Integer lowWaterLevel = 1024 * 1024; //netty低水位
    private Integer highWaterLevel = 10 * 1024 * 1024; //netty高水位

    private boolean deDuplicateEnable = false; //是否开启去重处理
    private Integer duplicateCheckTime = 10; //请求去重缓存时长(秒)
    private Long duplicateMaxSize = 1024 * 64L; //最大缓存请求个数

    private Boolean trafficMonitorEnable = false; //是否开启流控
    private Long maxReadSpeed = 10 * 1000 * 1000L; //带宽限制，最大读取速度
    private Long maxWriteSpeed = 10 * 1000 * 1000L; //带宽限制，最大写出速度
    
    // ----tls加密部分配置
    private Boolean useTLS = false; //是否开启tls加密
    private String keyPath; //私钥文件路径
    private String keyPwd; //密码
    private String certPath; //证书文件路径
    private String trustCertPath; //受信任ca证书路径
    private String clientAuth; //是否要求客户端认证
    // ----注册中心配置部分
    private Boolean enableRegistry = false; //是否使用注册中心
    private String registrySchema; //注册中心模式名称
    private List<String> registryAddress; //注册中心地址

@ConfigurationProperties(prefix = "srpc.client")
public class RpcClientProperties {
    private Integer callBackTaskThreads = 200; //回调任务处理线程池大小，0为不设置
    private Integer callBackTaskQueueSize = 500; //回调任务线程池队列大小
    private Integer connectionTimeout = 5; //连接超时时间(秒)
    private Integer requestTimeout = 10; //请求超时时间(秒)
    private Integer connectionSizePerNode = 3; //每个节点连接数
    private Integer connectionIdleTime = 180; //超过连接空闲时间(秒)未收发数据则关闭连接
    private Integer heartBeatTimeInterval = 30; //发送心跳包间隔时间(秒)

    private CompressType compressType = CompressType.SNAPPY; //压缩算法类型，无需压缩为NONE
    private SerializeType serializeType = SerializeType.PROTOSTUFF; //序列化类型，默认protostuff

    private LoadBalanceRule loadBalanceRule = LoadBalanceRule.RANDOM; //集群负载均衡策略
    private boolean excludeUnAvailableNodesEnable = true; //集群模式下是否排除不可用的节点
    private Integer nodeErrorTimes = 3; //节点连接或请求超时/异常超过设置次数则置为节点不可用
    private Integer nodeHealthCheckTimeInterval = 10; //节点健康检查周期(秒),心跳包响应成功则恢复不可用的节点
    
    private Integer sendBuf = 65535; //tcp发送缓冲区
    private Integer receiveBuf = 65535; //tcp接收缓冲区
    private Integer lowWaterLevel = 1024 * 1024; //netty低水位
    private Integer highWaterLevel = 10 * 1024 * 1024; //netty高水位

    private Boolean trafficMonitorEnable = false; //是否开启流量控制
    private Long maxReadSpeed = 10 * 1000 * 1000L; //带宽限制，最大读取速度
    private Long maxWriteSpeed = 10 * 1000 * 1000L; //带宽限制，最大写出速度
    
    // ----TLS加密部分配置
    private Boolean useTLS = false; //是否开启TLS加密
    private String keyPath; //私钥文件路径
    private String keyPwd; //密码
    private String certPath; //证书文件路径
    private String trustCertPath; //受信任ca证书路径
    private String clientAuth; //是否要求客户端认证
    // ----注册中心配置部分
    private Boolean enableRegistry = false; //是否使用注册中心
    private String registrySchema; //注册中心模式名称, 缺省为zookeeper
    private List<String> registryAddress; //注册中心地址

@Component
public class HelloRpcTest {
    
    @Autowired
    private HelloService helloService; // 上面定义的rpc服务接口

    public void rpcServerTest(String name) {
        String msg = helloService.hello(name);
        System.out.println(msg);
    }
}