es4x 使用nodejs 开发vertx 应用框架试用

Posted 2020-11-22 rongfengliang-荣锋亮

es4x 是将vertx 的特性带到nodejs 的开发中，性能很不错，同时开发方式和nodejs 一样，可以加速vertx
应用的开发，同时也可以方便的集成java 软件包，提供的cli 工具也很方便，支持基于docker 的部署。
以下是一个简单的demo

项目结构

代码集成了typescript

• 代码目录

├── Dockerfile

├── Hello.class

├── Hello.java

├── README.md

├── app.sh

├── docker-compose.yaml

├── entrypoint.sh

├── index.js

├── index.ts

├── package-lock.json

├── package.json

├── tsconfig.json

└── yarn.lock

• 代码说明
  package.json
  nodejs 项目运行的依赖

 

{

  "version": "1.0.0",

  "description": "This is a ES4X empty project.",

  "main": "index.js",

  "scripts": {

    "test": "es4x test index.test.js",

    "postinstall": "es4x install",

    "build": "tsc -w",

    "start": "es4x"

  },

  "keywords": [],

  "author": "",

  "license": "ISC",

  "name": "es4x-app",

  "devDependencies": {

    "@vertx/unit": "^3.8.3",

    "typescript": "^3.7.2"

  },

  "dependencies": {

    "@vertx/core": "^3.8.3",

    "@vertx/web": "^3.8.3"

  }

}

index.ts
typescript 编写的应用

 

/// <reference path="node_modules/@types/es4x.d.ts" />

​

import { Router } from \'@vertx/web\';

​

const app = Router.router(vertx);

​

app.route(\'/\').handler((ctx) => {

  ctx.response().end(\'Hello from Vert.x Web!\');

});

vertx.createHttpServer()

  .requestHandler(app.handle)

  .listen(8090);

dockerfile
es4x cli 生成的

 

ARG BASEIMAGE=oracle/graalvm-ce:19.2.0.1

# Use official node for build

FROM node:10 AS NPM

# Create app directory

WORKDIR /usr/src/app

# Install app dependencies

# A wildcard is used to ensure both package.json AND package-lock.json are copied

# where available (npm@5+)

COPY package*.json ./

# If you are not building your code for production

# remove the final argument

# npm is run with unsafe permissions because the default docker user is root

RUN npm --unsafe-perm update

​

# Second stage (build the JVM related code)

FROM $BASEIMAGE AS JVM

ARG ES4X_VERSION=0.9.5

# force es4x maven resolution only to consider production dependencies

ENV ES4X_ENV=production

# Copy the previous build step

COPY --from=NPM /usr/src/app /usr/src/app

# use the copied workspace

WORKDIR /usr/src/app

# Download the ES4X runtime tool

RUN curl -sL https://github.com/reactiverse/es4x/releases/download/${ES4X_VERSION}/es4x-pm-${ES4X_VERSION}-bin.tar.gz | tar zx --strip-components=1 -C /usr/local

# Install the Java Dependencies

RUN es4x install -f

​

# Third stage (contain)

FROM $BASEIMAGE

# Collect the jars from the previous step

COPY --from=JVM /usr/src/app /usr/src/app

# use the copied workspace

WORKDIR /usr/src/app

# Bundle app source

COPY . .

EXPOSE 8090

ENV N=2

# Define custom java options for containers

ENV JAVA_OPTS="-XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap -XX:+UseContainerSupport"

# define the entrypoint

COPY entrypoint.sh /entrypoint.sh

RUN chmod +x /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh
docker 应用的入口

#!/bin/bash

./node_modules/.bin/es4x-launcher -instances $N

docker-compose 文件
为了方便运行 ，使用了docker-compose运行

version: "3"

services: 

  app:

    build: ./

    image: dalongrong/es4x:basic-learningv2

    environment: 

    - "N=2"

    ports:

    - "8090:8090"

启动&&测试

• ab 测试脚本
  一个基于ab 压力测试的脚本

 

#!/bin/bash

ab -n 16000 -c 100 http://localhost:8090/

• 构建镜像

docker-compose build

• 启动

docker-compose up -d 

• 本地运行
  注意jvm 的版本，推荐使用 GraalVM 以及Java >= 8 ，因为使用了typescript 需要先编译为js 文件

 

yarn build

yarn start

• 压力测试

  测试机器为一个2核4g 的服务器

 

 

说明

使用es4x 开发vertx 应用即保留了nodejs 高效方便的开发方式，同时也支持了与java 语言的互通

参考资料

https://reactiverse.io/es4x/
https://github.com/rongfengliang/es4x-learning-docker