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Home Page: https://dubbo.apache.org/
License: Apache License 2.0
The Typescript implementation of Apache Dubbo. An RPC and microservice framework for Node.js and Web development.
Home Page: https://dubbo.apache.org/
License: Apache License 2.0
您好!
我研究了一下源码,没有发现有失败重试的功能,是不没有实现或者我没有找到对应的代码,是否可以扩展容错的一些机制
有没有nodejs作为消费者的例子
如题,谢谢。
const enum feature:
for example:
const enum Status {
PADDING = "PADDING",
READY = "READY",
FAILD = "FAILD"
}
function test() {
const currentStatus = Status.PADDING;
}
function test() {
var currentStatus = "PADDING" /* PADDING */;
}
enum Status {
PADDING = "PADDING",
READY = "READY",
FAILD = "FAILD"
}
function test() {
const currentStatus = Status.PADDING;
}
var Status;
(function (Status) {
Status["PADDING"] = "PADDING";
Status["READY"] = "READY";
Status["FAILD"] = "FAILD";
})(Status || (Status = {}));
function test() {
var currentStatus = Status.PADDING;
}
在某个版本内部实现中,是有retry的机制
在内部讨论下,在一些场景下接口调用不是幂等的,暂时舍弃这部分功能。
作为opensource就完善这个功能。
在Context记录retry次数,然后在scheduler中timeoutError后者onClose中尝试重试机制。
你好:
我一个服务注册在两个不同的zookeeper,想通过dubbo2.js 调用这两个不同注册中心上的服务,发现只能调用同一个注册中心上的服务。
以下为实现:
const {Dubbo, java, TDubboCallResult} = require('dubbo2.js');
const {dubboInvoke,invoker} = require('dubbo-invoker');
const app = require('http');
//创建dubbo对象
var dubbo = new Dubbo({
application: {name: 'dubbo-node-consumer'},
//zookeeper address
register: '127.0.0.1:2182',
dubboVersion: '2.0.10',
interfaces: ['com.sitech.hsf.Interface.ServerA'],
});
const demoProvider = dubbo.proxyService({
dubboInterface: 'com.sitech.hsf.Interface.ServerA',
version: '2.0.0',
timeout:10,
group:'',
methods: {
sayHello(name) {
return [java.String(name)];
},
},
});
var dubbo2 = new Dubbo({
application: {name: 'dubbo-node-consumer1'},
//zookeeper address
register: '127.0.0.1:2181',
dubboVersion: '2.0.10',
interfaces: ['com.sitech.hsf.Interface.ServerA'],
});
const demoProvider2 = dubbo2.proxyService({
dubboInterface: 'com.sitech.hsf.Interface.ServerA',
version: '2.0.0',
timeout:10,
group:'',
methods: {
sayHello(name) {
return [java.String(name)];
},
},
});
(async () => {
await dubbo.ready();
await dubbo2.ready();
console.log('dubbo ready over...');
})();
(async () => {
await dubbo.ready();
await dubbo2.ready();
console.log('dubbo ready over...');
})();
app.createServer(async (req, res) => {
const result1 = await demoProvider.sayHello("node");
const result2 = await demoProvider2.sayHello("node");
const result3 = await demoProvider2.sayHello("node");
const result4 = await demoProvider.sayHello("node");
console.log('end->',result1,result2,result3,result4);
res.end(result.res);
}).listen(8080);
伟大的创造者您好!
请问dubbo2的调用负载均衡方式是何种方式,是否支持负载均衡的动态配置。谢谢!
你好:
我现在需要初始化多个dubbo 但是初始化或后始终调用的是一个zk上的服务。
如下为编写的代码。
如果我想通过监听事件动态调用,注册在不同zk上的服务,会出现调用不到我想要的调用的服务。
`const {Dubbo, java, TDubboCallResult} = require('dubbo2.js');
const {dubboInvoke,invoker} = require('dubbo-invoker');
const app = require('http');
var url = require('url');
var events = require('events');
var emitor = new events.EventEmitter();
var opt = [{
application: {name: 'dubbo-node-consumerA'},
register: '127.0.0.1:2182',
dubboVersion: '2.0.10',
interfaces: ['com.sitech.hsf.Interface.ServerA'],
},{
application: {name: 'dubbo-node-consumerB'},
register: '127.0.0.1:2181',
dubboVersion: '2.0.10',
interfaces: ['com.sitech.hsf.Interface.ServerA'],
}];
var proxy = {
dubboInterface: 'com.sitech.hsf.Interface.ServerA',
version: '2.0.0',
timeout:10,
group:'',
methods: {
sayHello(name) {
return [java.String(name)];
},
},
};
var dubbo = new Dubbo(opt[0]);
var dubbo1 = new Dubbo(opt[1]);
var proxyProvider = dubbo.proxyService(proxy);
var proxyProvider1 = dubbo1.proxyService(proxy);
//始终调用到dubbo1注册的zk的服务。
emitor.on('input',function (res,pid){
var result = async (id) => {
var result = await proxyProvider'sayHello';
var result1 = await proxyProvider1'sayHello';
console.log('result',result);
console.log('result',result1);
return result;
};
result(pid).then((data) => {res.end(result1.res);} );
});
app.createServer(function(req, res) {
const path = url.parse(req.url).pathname;
var params = url.parse(req.url,true).query;
if(path == '/dubbo'){
emitor.emit('input',res,params.id);
}
}).listen(9090);`
类似最下面的代码,如果人工去编写,成本较高,最好能通过JAR包直接生成,这个功能点有没有规划去落地?
/Create the service to be injected
import {Dubbo} from 'dubbo2.js';
const demoProvider = dubbo =>
dubbo.proxyService({
dubboInterface: 'com.alibaba.dubbo.demo.DemoProvider',
version: '1.0.0',
methods: {
sayHello(name) {
return [java.String(name)];
},
echo() {},
test() {},
getUserInfo() {
return [
java.combine('com.alibaba.dubbo.demo.UserRequest', {
id: 1,
name: 'nodejs',
email: '[email protected]',
}),
];
},
},
});
例:
router.get('/user', async ctx => { const {res, err} = await dubbo.service.demoProvider.getUserInfo(); ctx.body = res || err.message; });
node端调用rpc服务,service端抛出异常err信息带打印信息不是标准的json对象,不知道问题出在哪里?求指教!!
我的dubbo.json配置文件为:
{
"output": "./src",
"entryJarPath": "./java/dubbo-demo/qifutong-api/target/qifu-labourer-client-1.1.6-SNAPSHOT.jar",
"libDirPath": "./java/dubbo-demo/qifutong-api/target/lib/"
}
其中的jar包和依赖包都是有的。
然后npm install interpret-dubbo2js
运行interpret -c dubbo.json
运行结果为:
Output at: C:\Users\ADMINI~1\AppData\Local\Temp\jexpose2045571442071863293
elapsed: 81.317s
read jar ast file C:\Users\ADMINI~1\AppData\Local\Temp\jexpose2045571442071863293\output\deflated.json
Translation completed
第一个是包没有输出到我指定的路径,其二是输出的文件中output文件夹下只有一个deflated文件,里边内容为:
{
"classes":{},
"providers":[]
}
请问下这是什么原因呢?
hi
我现在egg工程中,service内new Dubbo,用proxyService注册方法,然后调用。
第一次能成功,同一个接口调用第二次就会超时。
如果重启工程又能进行一次调用,第二次超时。有碰到过这种情况的吗?
代码大致如下:
`
import { Context, Service } from 'egg';
import { Dubbo, java, TDubboCallResult, Context as DubboContext } from 'dubbo2.js';
export default class MyService extends Service {
constructor(ctx: Context) {
super(ctx);
}
/**
* 新建模板活动
*/
public async createActivity(arg1, arg2) {
const { ctx } = this;
const { dubboGroup, dubboBase } = ctx.app.config;
// 创建dubbo实例
const dubbo = new Dubbo({
...dubboBase.myConfig,
dubboInvokeTimeout: 30,
service: { myApiService: this.myApiService },
});
dubbo.subscribe({
onTrace: (msg) => {
this.logger.info(msg);
},
});
const doSometing = dubbo.service['myApiService'].doSometing;
const result = await doSometing(arg1, arg2);
if (result.err) {
this.logger.error(result.err);
this.ctx.throw('dubbo服务出错,请联系管理员');
}
return result.res;
}
private myApiService = (dubbo) => {
const { ctx } = this;
const { dubboGroup, dubboBase } = ctx.app.config;
return dubbo.proxyService({
dubboInterface: 'my.dubbo.interface',
version: '0.0.0',
group: dubboGroup.myConfig,
methods: {
doSometing(arg1, arg2) {
return [
java.String(arg1),
java.String(arg2)
];
},
},
});
}
}
`
目前翻译会把私有变量也翻译出来如下边的logger, 而这个变量在java端是内容的,没有任务语义,应该过滤
import {Logger} from './../../../../../../org/slf4j/Logger';
import java from 'js-to-java';
export interface IUserUpdatePwdRequest {
serialVersionUID?: number;
pwdStrength?: string;
securityType?: string;
oldPassword?: string;
logger?: Logger;
systemType?: string;
adminId?: string;
newPassword?: string;
operationType?: string;
userId?: string;
token?: string;
}
export class UserUpdatePwdRequest {
constructor(params: IUserUpdatePwdRequest) {
this.serialVersionUID = params.serialVersionUID;
this.pwdStrength = params.pwdStrength;
this.securityType = params.securityType;
this.oldPassword = params.oldPassword;
this.logger = params.logger;
this.systemType = params.systemType;
this.adminId = params.adminId;
this.newPassword = params.newPassword;
this.operationType = params.operationType;
this.userId = params.userId;
this.token = params.token;
}
serialVersionUID?: number;
pwdStrength?: string;
securityType?: string;
oldPassword?: string;
logger?: Logger;
systemType?: string;
adminId?: string;
newPassword?: string;
operationType?: string;
userId?: string;
token?: string;
__fields2java() {
return {
$class: 'com.qianmi.usercenter.api.bo.security.UserUpdatePwdRequest',
$: {
serialVersionUID: java.Long(this.serialVersionUID),
pwdStrength: java.String(this.pwdStrength),
securityType: java.String(this.securityType),
oldPassword: java.String(this.oldPassword),
logger: this.logger['__fields2java']
? this.logger['__fields2java']()
: this.logger,
systemType: java.String(this.systemType),
adminId: java.String(this.adminId),
newPassword: java.String(this.newPassword),
operationType: java.String(this.operationType),
userId: java.String(this.userId),
token: java.String(this.token),
},
};
}
}
//generate by interpret-cli dubbo2.js
1.例如:
package com.example.service;
import com.example.dto.User;
public interface UserServiceProvider {
public String getUserName();
public User getUser(User user);
}
2.例如:
package com.example.service;
import com.example.dto.User;
public interface UserService {
public String getUserName();
public User getUser(User user);
}
1是可以生成ts文件,2就是不可以生成。这是哪里可以通过参数设置吗 ?
你好:
err: Error: uuid: invoke com.sitech.hsf.Interface.ServerA#sayHello was error,
这个错是什么意思
因为我的电脑用户名被设置了中文,导致路径乱码,求处理一下这个路径编码问题!!,而且生成的ts文件里面的引用路径也有问题
不知有没有实践过 json-rpc
的调用方式,关于 rt 以及并发上,能否接受,个人觉得 json-rpc 更适合跨语言调用
Is your feature request related to a problem? Please describe.
在这里进行 重连 的时候,我们是否应该像这里描述的一样 nodejs/node#5757 (comment) 增加一个超时的机制,否则,代码可能需要增加类似下面的逻辑
if (this._retry > 0) {
if (IS_RECONNECTING) return;
// reconnecting...
} else {
...
}
Describe the solution you'd like
A clear and concise description of what you want to happen.
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
Additional context
Add any other context or screenshots about the feature request here.
例如 :var consumers = path.join('/dubbo', provider, 'consumers'); 在windows上面返回的是 \ 而不是 /
hi
我在egg新开工程,尝试调用线上已存在的dubbo服务。一直报错,不知道是什么原因。
Fail to decode request due to: RpcInvocation [methodName=xxx, parameterTypes=null, arguments=null, attachments={path=yyy, input=199, dubbo=2.8.4, version=}]
dubboVersion: 2.8.4
HI,
现在遇到一个情况,我需要连接2个application。如果我对每个application new Dubbo的话,就破坏了单例模式,导致超时。
请问现在是否支持连接同一register上的不同application?
provider自己封装了protocol协议,怎么在consumer端去指定协议?
如图,egg配合dubbo2.js通过zk调用dubbo的时候一直报这个错
有没有大佬知道的帮忙解决下,开启了 DEBUG=dubbo* 也没有找出问题所在
@hufeng
HI,我想在dubbo调用时传递userid等值,但不想在每个接口都设个变量。请问能否通过上下文的方式传递值?谢谢~
第一次使用 Dubbo,以下是我对本项目的理解,如有错误,望不吝赐教。
其中关于第二点是我最困惑的,是我没找到 Node 发布服务的方式,还是 Dubbo 只能通过 JAVA 进行服务发布。
//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'],
});
在目前的dubbo创建对象中,需要传递interfaces参数,原因是zookeeper的注册中心里面可能包含了大量的dubbo接口的信息,如果都去订阅,在zookeeper发生变化的时候,就会大量的watch,所有通过传递这个参数来设置我们需要关心和订阅的接口。
能不能在保证相同的体验下,内部获取这些参数。可能的思路,比如proxyService异步将代理服务的接口名搜集起来,告诉zookeeper。
promise
async、await
@hufeng 上下文请移步 QianmiOpen/dubbo-node-client#15
期待你们的回复,非常感谢!
能不能做的像java的JMX一样很很直观的展示。
能否支持jeager分布式跟踪(koa-await-breakpoint-jaege)
https://www.bookstack.cn/read/node-in-debugging/6.4OpenTracingJaeger.md
如题,文档看过没有明白应该如何使用,可能我被自己的思路所限制了,可以请教下如何使用吗?
我是一名 Node.js 开发,现有的解决方案是自己实现了一个 node-dubbo-client 的包,通过 Java 提供的服务名(com.alibaba.dubbo.demo.DemoProvider)从 zk 获取 Dubbo 服务的地址与端口,然后通过 Java 提供的函数名(getUserInfo)调用到真实的服务,数据传递使用的是 JSON,然后 Java 那边将 JSON 再反序列化成 Java 的数据类型,然后再通过将结果转成 JSON 返回给我。
基于上述的流程,感觉被自己的思路限制了,看着 dubbo2.js 的文档和示例,依旧没有看懂我应该怎么做,服务名和方法名应该写在哪里,参数应该如何传递。
provider
public interface PaymentProvider{
PayResultBO guaranteePayment(PaymentBO paymentBO, PaymentMethod paymentMethod, String realPayeeUserId, EnumTradeChannel enumTradeChannel)
throws BaseException;
}
父类
public abstract class PaymentMethod extends BaseBean implements Cloneable {
}
子类
public class PaymentMethodOLP extends PaymentMethod {
}
以上代码,
期望的是Java类转换成node后,依赖包中包含PaymentProvider、PaymentMethod、PaymentMethodOLP等文件。
结果转换成node后只包含了PaymentProvider和PaymentMethod。
PaymentMethodOLP文件丢失了
在开发过程中 调用 com.qianmi.mc.api.buyer.BuyerActivityQueryProvider 出现异常.跟踪如下:
dubbo 启动时,providerurl信息,可以看出BuyerActivityQueryProvider 并没有相应的provider
登陆 zookeeper 查看 ,确实没有
查看 dubbo源代码 . 在调用接口,如果没找到相应的SocketWorker,则会报:Could not find any agent worker
private _handleDubboInvoke(requestId: number) {
//get request context
const ctx = queue.requestQueue.get(requestId);
//get socket agent list
const agentAddrList = this._zkClient.getAgentAddrList(ctx);
log('agentAddrSet-> %O', agentAddrList);
const worker = this._serverAgent.getAvailableSocketWorker(agentAddrList);
//if could not find any available socket agent worker
if (!worker) {
const {requestId, dubboInterface, version, group} = ctx;
const msg = `requestId#${requestId}:Could not find any agent worker with ${dubboInterface}#${version}#${group} agentList: ${agentAddrList.join(
',',
)}`;
const err = new ScheduleError(msg);
this._handleFailed(requestId, err);
log(err);
traceErr(err);
return;
}
ctx.invokeHost = worker.host;
ctx.invokePort = worker.port;
const providerProps = this._zkClient.getDubboServiceProp(ctx);
queue.consume(ctx.requestId, worker, providerProps);
}
你没有实现呀,有思路吗?
目前只支持随机算法,后面支持更多负载均衡的算法。
实际测试,随机算法已经比较均衡。
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