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Express gateway 본문
Building a simple Microservices App with Express Gateway
One of the most interesting programming problems I have worked on was building a microservice app. What made it interesting was my…
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npm install -g express-gateway
eg gateway create
cd microservices
npm install express --save
npm install @babel/core @babel/node @babel/preset-env --save-dev
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vi .babelrc
{
"presets": ["@babel/preset-env"]
}
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vi user.js
import express from 'express';
let app = express();
app.get('/users', (req, res, next) => {
res.send(["Tony","Lisa","Michael","Ginger","Food"])
})
app.listen(3000, () => {
console.log('Server running on 3000');
})
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vi music.js
import express from 'express';
let app = express();
app.get('/musics', (req,res,next) => {
res.status(200).send(['Jesus', 'I love to praise your name', 'My Story', 'Days of Elijah'])
})
app.listen(8000, () => {
console.log('Server running on 8000')
})
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vi ./config/gateway.config.yml
http:
port: 8080
admin:
port: 9876
host: localhost
apiEndpoints:
api:
host: localhost
paths: '/ip'
user:
host: localhost
paths: ['/users','/users/*']
music:
host: localhost
paths: ['/musics','/musics/*']
serviceEndpoints:
httpbin:
url: 'https://httpbin.org'
userService:
url: 'http://localhost:3000'
musicService:
url: 'http://localhost:8000'
policies:
- basic-auth
- cors
- expression
- key-auth
- log
- oauth2
- proxy
- rate-limit
pipelines:
default:
apiEndpoints:
- api
policies:
# Uncomment `key-auth:` when instructed to in the Getting Started guide.
# - key-auth:
- proxy:
- action:
serviceEndpoint: httpbin
changeOrigin: true
userPipeline:
apiEndpoints:
- user
policies:
# Uncomment `key-auth:` when instructed to in the Getting Started guide.
# - key-auth:
- proxy:
- action:
serviceEndpoint: userService
changeOrigin: true
musicPipeline:
apiEndpoints:
- music
policies:
# Uncomment `key-auth:` when instructed to in the Getting Started guide.
# - key-auth:
- proxy:
- action:
serviceEndpoint: musicService
changeOrigin: true
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vi server.js
import path from 'path';
import gateway from 'express-gateway';
import './user';
import './music';
gateway()
.load(path.join(__dirname, 'config'))
.run();
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npm install nodemon — save-dev
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vi package.json
"start":"nodemon --exec bable-node server.js"