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const debug = require('debug')('hyperion:renderer'); |
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import React from 'react'; |
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import { renderToNodeStream } from 'react-dom/server'; |
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import { ServerStyleSheet } from 'styled-components'; |
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import { ApolloProvider, getDataFromTree } from 'react-apollo'; |
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import { ApolloClient } from 'apollo-client'; |
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import { SchemaLink } from 'apollo-link-schema'; |
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import schema from 'api/schema'; |
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import createLoaders from 'api/loaders'; |
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import { createHttpLink } from 'apollo-link-http'; |
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import { |
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InMemoryCache, |
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IntrospectionFragmentMatcher, |
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} from 'apollo-cache-inmemory'; |
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import { StaticRouter } from 'react-router'; |
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import { Provider } from 'react-redux'; |
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import { HelmetProvider } from 'react-helmet-async'; |
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import Loadable from 'react-loadable'; |
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import { getBundles } from 'react-loadable/webpack'; |
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import Raven from 'shared/raven'; |
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import introspectionQueryResultData from 'shared/graphql/schema.json'; |
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import stats from '../../build/react-loadable.json'; |
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import getSharedApolloClientOptions from 'shared/graphql/apollo-client-options'; |
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import { getFooter, getHeader } from './html-template'; |
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import './browser-shim'; |
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const Routes = require('../../src/routes').default; |
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import { initStore } from '../../src/store'; |
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const IN_MAINTENANCE_MODE = |
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process.env.REACT_APP_MAINTENANCE_MODE === 'enabled'; |
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const IS_PROD = process.env.NODE_ENV === 'production'; |
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const FORCE_DEV = process.env.FORCE_DEV; |
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const FIVE_MINUTES = 300; |
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const ONE_HOUR = 3600; |
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if (!IS_PROD || FORCE_DEV) debug('Querying API at localhost:3001/api'); |
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const renderer = (req: express$Request, res: express$Response) => { |
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res.setHeader('Content-Type', 'text/html; charset=utf-8'); |
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if (IN_MAINTENANCE_MODE) { |
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res.status(500); |
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res.send( |
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`<!DOCTYPE html><html><head><title>Spectrum</title> <style>body{margin: 0;}html{-webkit-font-smoothing: antialiased; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';}h1, p{line-height: 1.5;}.container{background: rgb(56,24,229);background: linear-gradient(90deg, rgba(56,24,229,1) 0%, rgba(56,24,229,0.8029586834733894) 52%, rgba(56,24,229,1) 100%); width: 100%; display: flex; height: 100vh; justify-content: center;}.item{color: white; font-weight: bold; align-self: center; text-align: center;}a{color: white;}span{font-size: 40px; padding: 0; margin: 0;}</style></head><body> <div class="container"> <div class="item"> <span>🛠</span> <h1>We are currently undergoing maintenance.</h1> <p>We'll be back shortly. Follow <a href="https://twitter.com/withspectrum">@withspectrum on Twitter</a> to stay up to date. </p></div></div></body></html>` |
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); |
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return; |
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} |
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debug(`server-side render ${req.url}`); |
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debug(`querying API at https://${req.hostname}/api`); |
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const schemaLink = new SchemaLink({ |
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schema, |
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context: { |
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user: req.user || null, |
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loaders: createLoaders(), |
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}, |
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}); |
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const cache = new InMemoryCache({ |
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fragmentMatcher: new IntrospectionFragmentMatcher({ |
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introspectionQueryResultData, |
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}), |
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...getSharedApolloClientOptions(), |
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}); |
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const nonce = |
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typeof res.locals.nonce === 'string' ? res.locals.nonce : undefined; |
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if (!nonce) throw new Error('Security nonce not set.'); |
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const client = new ApolloClient({ |
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ssrMode: true, |
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link: schemaLink, |
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cache, |
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}); |
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const { t } = req.query; |
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const initialReduxState = {}; |
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const store = initStore(initialReduxState); |
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let modules = []; |
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const report = moduleName => { |
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modules.push(moduleName); |
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}; |
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let routerContext = {}; |
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let helmetContext = {}; |
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const sheet = new ServerStyleSheet(); |
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const frontend = sheet.collectStyles( |
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<Loadable.Capture report={report}> |
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<ApolloProvider client={client}> |
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<HelmetProvider context={helmetContext}> |
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<Provider store={store}> |
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<StaticRouter location={req.url} context={routerContext}> |
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<Routes maintenanceMode={IN_MAINTENANCE_MODE} /> |
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</StaticRouter> |
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</Provider> |
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</HelmetProvider> |
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</ApolloProvider> |
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</Loadable.Capture> |
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); |
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debug('get data from tree'); |
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getDataFromTree(frontend) |
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.then(() => { |
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debug('got data from tree'); |
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if (routerContext.url) { |
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debug('found redirect on frontend, redirecting'); |
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res.redirect(301, routerContext.url); |
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return; |
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} |
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if (IN_MAINTENANCE_MODE) { |
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debug('maintenance mode enabled, sending 503'); |
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res.status(503); |
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res.set('Retry-After', '3600'); |
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} else { |
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res.status(200); |
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} |
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const state = store.getState(); |
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const data = client.extract(); |
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const { helmet } = helmetContext; |
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debug('write header'); |
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if (!req.user) { |
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res.setHeader( |
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'Cache-Control', |
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`s-maxage=${ONE_HOUR}, stale-while-revalidate=${FIVE_MINUTES}, must-revalidate` |
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); |
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} else { |
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res.setHeader('Cache-Control', 's-maxage=0, private'); |
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} |
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res.write( |
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getHeader({ |
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metaTags: |
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helmet.title.toString() + |
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helmet.meta.toString() + |
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helmet.link.toString(), |
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nonce: nonce, |
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}) |
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); |
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const stream = sheet.interleaveWithNodeStream( |
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renderToNodeStream(frontend) |
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); |
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stream.pipe( |
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res, |
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{ end: false } |
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); |
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const bundles = getBundles(stats, modules) |
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.map(bundle => `/${bundle.file.replace(/\.map$/, '')}`) |
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.filter((value, index, self) => self.indexOf(value) === index); |
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debug('bundles used:', bundles.join(',')); |
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stream.on('end', () => |
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res.end( |
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getFooter({ |
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state, |
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data, |
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bundles, |
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nonce: nonce, |
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}) |
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) |
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); |
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}) |
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.catch(err => { |
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sheet.seal(); |
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console.error(err); |
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const sentryId = |
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process.env.NODE_ENV === 'production' |
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? Raven.captureException(err) |
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: 'Only output in production.'; |
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res.status(500); |
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res.send( |
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`<!DOCTYPE html><html><head><title>Spectrum</title> <style>body{margin: 0;}html{-webkit-font-smoothing: antialiased; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';}h1, p{line-height: 1.5;}.container{background: rgb(56,24,229);background: linear-gradient(90deg, rgba(56,24,229,1) 0%, rgba(56,24,229,0.8029586834733894) 52%, rgba(56,24,229,1) 100%); width: 100%; display: flex; height: 100vh; justify-content: center;}.item{color: white; font-weight: bold; align-self: center; text-align: center;}a{color: white;}span{font-size: 40px; padding: 0; margin: 0;}</style></head><body> <div class="container"> <div class="item"> <span>😢</span> <h1>Oops, something went wrong. Sorry!</h1> <p>Please refresh the page.</p></div></div></body></html>` |
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); |
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}); |
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}; |
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export default renderer; |
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