node-dubbo-sleuth v1.0.2

dubbo-sleuth

dubbo-sleuth = dubbo2.js + zipkin-js

Thanks a lots of Dubbo2.js

Features

1. Keep it Simple. (follow dubbo2.js)
2. More details which you can handle.
3. Senseless integration for brave.
4. Typescript type definitions.

Getting Started

How to Usage?

basic useage

//===================== app.ts =====================
import { Application, IBoot } from 'egg';
import { Tracing, DubboInjector } from 'node-dubbo-sleuth';

export default class AppBootHook implements IBoot {
    private readonly app: Application;

    constructor(app) {
        this.app = app;
    }

    async didReady() {
        Tracing.init({
            localServiceName: 'systemname',
            endpointHost: 'localhost',
            endpointPort: 9411,
            injector: new DubboInjector(),
        });
    }
}
//===================== app/dubbo/index.ts =====================
import { sleuth } from 'dubbo-sleuth';
    // same as dubbo2.js config
    dubbo.use(sleuth());
    // then you will tracing by zipkin. 

advanced useage

tracing from http request

//===================== app/middleware/tracing.ts =====================
import { Endpoint, Span, Tracing } from 'dubbo-sleuth';
import { Application, Context } from 'egg';
import zone from 'zone-context';

// you can config it match only /api/*
export default (_config: any, app: Application) =>
    async (ctx: Context, next: Function) => {
        const traceIdEjected = Tracing.ejector.eject(ctx.headers);
        const rootTraceId = traceIdEjected.getOrElse(() => Tracing.tracer.createRootId()); // get TraceId from Http Headers

        zone.setRootContext('traceId', rootTraceId); // set rootTraceId into dubbo.js zone
        const span = new Span(rootTraceId);
        // same as `node-sleuth` config
    };


//===================== app/dubbo/index.ts =====================
import { sleuth, Span } from 'dubbo-sleuth';
import zone from 'zone-context';
    // same as dubbo2.js config
    dubbo.use(
        sleuth({
            createTraceId(tracer) {
                // get rootTraceId from dubbo.js zone
                const traceId = zone.get('traceId');
                tracer.setId(traceId);
                return tracer.createChildId();
            },
        }),
    );
    // then you will tracing by zipkin.