112 lines
2.8 KiB
JavaScript
112 lines
2.8 KiB
JavaScript
/*eslint-disable no-console*/
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const http = require('http')
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const express = require('express')
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const cors = require('cors')
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const morgan = require('morgan')
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const unpkg = require('express-unpkg')
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const { fetchStats } = require('./cloudflare')
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const { logPackageRequests } = require('./logging')
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const fs = require('fs')
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const path = require('path')
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const sendHomePage = (publicDir) => {
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const html = fs.readFileSync(path.join(publicDir, 'index.html'), 'utf8')
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return (req, res, next) => {
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fetchStats((error, stats) => {
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if (error) {
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next(error)
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} else {
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res.set('Cache-Control', 'public, max-age=60')
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res.send(
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html.replace('__SERVER_DATA__', JSON.stringify({
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cloudflareStats: stats
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}))
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)
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}
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})
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}
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}
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const errorHandler = (err, req, res, next) => {
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res.status(500).send('<p>Internal Server Error</p>')
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console.error(err.stack)
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next(err)
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}
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const createServer = (config) => {
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const app = express()
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app.disable('x-powered-by')
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if (process.env.NODE_ENV === 'development')
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app.use(morgan('dev'))
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app.use(errorHandler)
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app.use(cors())
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app.get('/', sendHomePage(config.publicDir))
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app.use(express.static(config.publicDir, {
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maxAge: config.maxAge
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}))
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if (config.redisURL)
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app.use(logPackageRequests(config.redisURL))
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app.use(unpkg.createRequestHandler(config))
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const server = http.createServer(app)
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// Heroku dynos automatically timeout after 30s. Set our
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// own timeout here to force sockets to close before that.
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// https://devcenter.heroku.com/articles/request-timeout
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if (config.timeout) {
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server.setTimeout(config.timeout, (socket) => {
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const message = `Timeout of ${config.timeout}ms exceeded`
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socket.end([
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`HTTP/1.1 503 Service Unavailable`,
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`Date: ${(new Date).toGMTString()}`,
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`Content-Type: text/plain`,
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`Content-Length: ${message.length}`,
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`Connection: close`,
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``,
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message
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].join(`\r\n`))
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})
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}
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return server
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}
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const defaultServerConfig = {
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id: 1,
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port: parseInt(process.env.PORT, 10) || 5000,
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publicDir: 'public',
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timeout: parseInt(process.env.TIMEOUT, 10) || 20000,
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maxAge: process.env.MAX_AGE || '365d',
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// for express-unpkg
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registryURL: process.env.REGISTRY_URL || 'https://registry.npmjs.org',
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redirectTTL: process.env.REDIRECT_TTL || 500,
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autoIndex: !process.env.DISABLE_INDEX,
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redisURL: process.env.REDIS_URL,
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blacklist: require('./package-blacklist').blacklist
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}
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const startServer = (serverConfig = {}) => {
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const config = Object.assign({}, defaultServerConfig, serverConfig)
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const server = createServer(config)
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server.listen(config.port, () => {
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console.log('Server #%s listening on port %s, Ctrl+C to stop', config.id, config.port)
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})
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}
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module.exports = {
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createServer,
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startServer
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}
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