多年期盼,一朝梦圆! We love dubbo 👏
感谢 js-to-java,hessian.js 两大核心模块, 感谢fengmk2和dead-horse老师。
nodejs 使用原生的 dubbo (dubbo head + hessian body) 协议打通了 dubbo 的 rpc 方法调用 .
-
Support zookeeper as register center
-
TCP Dubbo Native protocol (Dubbo Header + Hessian Body)
-
Socket Pool (ServerAgent -> SocketPool -> SocketWorker)
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Support Directly Dubbo (const Dubbo = DirectlyDubbo({..}))
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Middleware, Easy to extend.
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Tracing
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supported Dubbox
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typescript type definition
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convert java dubbo interface to typescript module
yarn add dubbo2.js # or npm install dubbo2.js --save
import {Dubbo, java, TDubboCallResult} from 'dubbo2.js';
//定义dubbo方法类型接口
//方便代码自动提示
//实际项目中会通过我们的[翻译师]工具自动根据java接口字节码jar包
//自动生成
interface IDemoService {
sayHello(name: string): TDubboCallResult<string>;
echo(): TDubboCallResult<string>;
test(): TDubboCallResult<void>;
getUserInfo(): TDubboCallResult<{
status: string;
info: {id: number; name: string};
}>;
}
//创建dubbo对象
const dubbo = new Dubbo({
application: {name: 'node-dubbo'},
//zookeeper address
register: 'localhost:2181',
dubboVersion: '2.0.0',
interfaces: ['com.alibaba.dubbo.demo.DemoService'],
});
//代理本地对象->dubbo对象
const demoService = dubbo.proxyService<IDemoService>({
dubboInterface: 'com.alibaba.dubbo.demo.DemoService',
version: '1.0.0',
methods: {
sayHello(name) {
//仅仅做参数hessian化转换
return [java.String(name)];
},
echo() {},
test() {},
getUserInfo() {
//仅仅做参数hessian化转换
return [
java.combine('com.alibaba.dubbo.demo.UserRequest', {
id: 1,
name: 'nodejs',
email: 'node@qianmi.com',
}),
];
},
},
});
//main method
(async () => {
const result1 = await demoService.sayHello('node');
//print {err: null, res:'hello node from dubbo service'}
const res = await demoService.echo();
//print {err: null, res: 'pang'}
const res = await demoService.getUserInfo();
//status: 'ok', info: { id: '1', name: 'test' }
})();
brew install zookeeper
brew services start zookeeper
#运行java/dubbo-demo-provider下面的例子
yarn run test
# 全链路日志跟踪
DEBUG=dubbo* yarn run test
const dubbo = new Dubbo({
isSupportedDubbox //是不是支持dubbox (boolean类型); 可选,默认false
application //记录应用的名称,zookeeper的调用时候写入consumer 类型:({name: string};) 可选
dubboInvokeTimeout //设置dubbo调用超时时间默认10s 可选 类型number
dubboSocketPool //设置dubbo创建socket的pool大小,默认4 可选 类型number
register //设置zookeeper注册中心地址 必填 类型string
zkRoot //zk的默认根路径,默认/dubbo 类型string
interfaces //设置zk监听的接口名称 类型 Array<string> 必填
});
// Or
const dubbo = Dubbo.from({
isSupportedDubbox //是不是支持dubbox (boolean类型); 可选,默认false
application //记录应用的名称,zookeeper的调用时候写入consumer 类型:({name: string};) 可选
dubboInvokeTimeout //设置dubbo调用超时时间默认10s 可选 类型number
dubboSocketPool //设置dubbo创建socket的pool大小,默认4 可选 类型number
register //设置zookeeper注册中心地址 必填 类型string
zkRoot //zk的默认根路径,默认/dubbo 类型string
interfaces //设置zk监听的接口名称 类型 Array<string> 必填
})
//dubbo的代理服务
const demoSerivce = Dubbo.proxService({
//代理的服务接口 - string 必传
dubboInterface: 'com.alibaba.dubbo.demo.DemoService',
//服务接口的版本 - string 必传
version: '1.0.0',
//超时时间 number 可选
timeout: 10
//所属组 string 可选
group: 'qianmi',
//接口内的方法 - Array<Function> 必传
methods: {
//method name
xx(params) {
return [
params
]
}
},
})
import {DirectlyDubbo, java} from 'dubbo2.js';
import {
DemoProvider,
DemoProviderWrapper,
IDemoProvider,
} from './providers/com/alibaba/dubbo/demo/DemoProvider';
import {UserRequest} from './providers/com/alibaba/dubbo/demo/UserRequest';
const dubbo = DirectlyDubbo.from({
dubboAddress: 'localhost:20880',
dubboVersion: '2.0.0',
dubboInvokeTimeout: 10,
});
const demoService = dubbo.proxyService<IDemoProvider>({
dubboInterface: 'com.alibaba.dubbo.demo.DemoProvider',
methods: DemoProviderWrapper,
version: '1.0.0',
});
const dubbo = Dubbo.from(/*...*/);
(async () => {
await dubbo.ready();
//TODO dubbo was ready
})();
//egg.js
app.beforeStart(async () => {
await dubbo.ready();
app.logger.info('dubbo was ready...');
});
const dubbo = Dubbo.from(/*...*/);
dubbo.subcribe({
onReady: () => {
//dubbo was ready.
//TODO for example logger
},
onSysError: err => {
//dubbo occur error
//TODO dingTalkRobot.send('error')
},
onStatistics: stat => {
//get invoke time statistics info
//in order to know load whether balance
},
});
通过对调用链路的抽象使用和 koa 相同的 middleware 机制,方便自定义拦截器,比如 logger,
//cost-time middleware
dubbo.use(async (ctx, next) => {
const startTime = Date.now();
await next();
const endTime = Date.now();
console.log('invoke cost time->', endTime - startTime);
});
在 dubbo 的接口调用中,需要设置一些动态的参数如,version, group, timeout, retry 等常常
这些参数需要在 consumer 调用方才精确设定值,之前是在 interpret 翻译生成 ts 的代码里面进行设置这个不够灵活,所以这里面我就抽象一个 dubbo-invoker 作为设置参数的 middleware
import {dubboInvoker, matcher} from 'dubbo-invoker';
//init
const dubbo = Dubbo.from(/*....*/);
//set params
dubbo.use(
dubboInvoke(
matcher
//精确匹配接口
.match('com.alibaba.demo.UserProvider', {
version: '1.0.0',
group: 'user',
})
//正则匹配
.match(/^com.alibaba.dubbo/, {
version: '2.0.0',
group: '',
})
//match thunk
match((ctx) => {
//computed....
return true
}, {
version: '3.0.0'
})
.,
),
);
我们坚定的认为开发体验同用户的体验同等重要,我们做了一些创新,一些很酷的实践。
为了使 node 和 dubbo 之间的调用像 java 调用 dubbo 一样简单透明,我们设计和实现了 translator.
通过分析 java 的 jar 包中的 bytecode 提取 dubbo 调用的接口信息,自动生成 typescript 类型定义文件以及调用的代码。
在 packages/dubbo/src/tests/provider 就是根据 java 目录下的 demo 翻译而来。
我们希望整个 dubbo 调用的代码都可以无缝生成。
职责
- 翻译 Interface 代码,生成 node 端可调用代码;
- 自动将参数转换为 hessian.js 能识别的对象;
- 接口方法及参数类型提示;
❯ loadtest -t 20 -c 200 http://localhost:3000/hello -k
[Mon Jun 04 2018 14:34:27 GMT+0800 (CST)] INFO Requests: 0, requests per second: 0, mean latency: 0 ms
[Mon Jun 04 2018 14:34:32 GMT+0800 (CST)] INFO Requests: 35956, requests per second: 7215, mean latency: 27.9 ms
[Mon Jun 04 2018 14:34:37 GMT+0800 (CST)] INFO Requests: 77133, requests per second: 8238, mean latency: 24.3 ms
[Mon Jun 04 2018 14:34:42 GMT+0800 (CST)] INFO Requests: 116531, requests per second: 7869, mean latency: 25.4 ms
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Target URL: http://localhost:3000/hello
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Max time (s): 20
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Concurrency level: 200
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Agent: keepalive
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Completed requests: 156836
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Total errors: 0
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Total time: 20.001182913 s
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Requests per second: 7841
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Mean latency: 25.4 ms
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO Percentage of the requests served within a certain time
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO 50% 24 ms
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO 90% 33 ms
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO 95% 36 ms
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO 99% 50 ms
[Mon Jun 04 2018 14:34:47 GMT+0800 (CST)] INFO 100% 124 ms (longest request)
import {Dubbo} from 'dubbo2.js';
默认导入的 dubbo2.js 是按照 es2017 进行编译的,支持 node7.10 以上。
如果更低的 node 版本,可以使用
import {Dubbo} from 'dubbo2.js/es6';
1.欢迎 pr
2.欢迎 issue