rxjs对nodejs->child-process封装，使其简单易用

简介

最近做项目，用到nodejs多进程，喜欢rxjs便做了如下封装，基本满足我的需求！ 源码请戳

安装

yarn add imeepos-child-process

ForkChildProcessSubject

• subscribe监听时自动创建fork进程
• next时发送指令给child-process
• unsubscribe自动kill

import { ForkChildProcessSubject } from 'imeepos-child-process';
const fork = new ForkChildProcessSubject({
    file: "./forks/test"
});
fork.pipe().subscribe(
    res => {
        console.log(res);
    },
    err => console.log(err),
    () => console.log('complete')
);
fork.next({
    action: "start",
    payload: {}
})
// 关闭调用fork->kill
fork.unsubscribe();

ProcessSubject

• next 发送消息给主进程
• unsubscribe调用process.exit
• subscribe监听message事件

• forks/test

import { tap, map } from 'rxjs/operators';
import { CoreBidgingEvent, ProcessSubject } from 'imeepos-child-process';
const proc = new ProcessSubject<CoreBidgingEvent>({});
proc.pipe(
    tap(res => {
        if (res.action === 'start') {
            for (let i = 0; i < 1000000000; i++) {

            }
            proc.next({
                action: "finish",
                payload: {}
            });
            // 终止
            proc.complete();
        }
    })
).subscribe();

封装后可以方便的使用rxjs提供的操作符操作

import { merge } from 'rxjs';

import { ForkChildProcessSubject } from 'imeepos-child-process';
const forks = [];
for (let i = 0; i < 10; i++) {
    forks.push(run('./forks/test'));
}

merge(...forks).pipe().subscribe(res => {
    console.log(res);
});

function run(file: string) {
    const fork = new ForkChildProcessSubject({
        file: file
    }).pipe();
    return fork;
}