c940dcd98b
* Middleware overhaul! - Remove unnecessary 'async' keywords from middleware functions - Ensure all middleware functions we create have names - Wrap the method contents of all async middleware functions in a try-catch+next(error) pattern * Use asyncMiddleware wrapper instead of try-catch+next(error) pattern * Remove unnecessary try-catch+next(error) pattern from context middleware
38 lines
1.4 KiB
JavaScript
38 lines
1.4 KiB
JavaScript
const path = require('path')
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const patterns = require('../lib/patterns')
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const isArchivedVersion = require('../lib/is-archived-version')
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const got = require('got')
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const ONE_DAY = 24 * 60 * 60 // 1 day in seconds
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// This module handles requests for the CSS and JS assets for
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// deprecated GitHub Enterprise versions by routing them to static content in
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// help-docs-archived-enterprise-versions
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//
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// See also ./archived-enterprise-versions.js for non-CSS/JS paths
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module.exports = async function archivedEnterpriseVersionsAssets (req, res, next) {
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const { isArchived, requestedVersion } = isArchivedVersion(req)
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if (!isArchived) return next()
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// Only match asset paths
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if (!patterns.assetPaths.test(req.path)) return next()
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const assetPath = req.path.replace(`/enterprise/${requestedVersion}`, '')
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const proxyPath = path.join('/', requestedVersion, assetPath)
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try {
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const r = await got(`https://github.github.com/help-docs-archived-enterprise-versions${proxyPath}`)
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res.set('accept-ranges', 'bytes')
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res.set('content-type', r.headers['content-type'])
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res.set('content-length', r.headers['content-length'])
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res.set('x-is-archived', 'true')
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res.set('x-robots-tag', 'noindex')
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// Allow the browser and Fastly to cache these
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res.set('cache-control', `public, max-age=${ONE_DAY}`)
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return res.send(r.body)
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} catch (err) {
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return next()
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}
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}
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