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docs/middleware/contextualizers/graphql.js
James M. Greene c940dcd98b Middleware overhaul! (#18218)
* 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
2021-03-11 01:12:41 +00:00

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1.4 KiB
JavaScript

const previews = require('../../lib/graphql/static/previews')
const upcomingChanges = require('../../lib/graphql/static/upcoming-changes')
const changelog = require('../../lib/graphql/static/changelog')
const prerenderedObjects = require('../../lib/graphql/static/prerendered-objects')
const allVersions = require('../../lib/all-versions')
const explorerUrl = process.env.NODE_ENV === 'production'
? 'https://graphql.github.com/explorer'
: 'http://localhost:3000'
module.exports = function graphqlContext (req, res, next) {
const currentVersionObj = allVersions[req.context.currentVersion]
// ignore requests to non-GraphQL reference paths
// and to versions that don't exist
if (!req.path.includes('/graphql/') || !currentVersionObj) {
return next()
}
// Get the relevant name of the GraphQL schema files for the current version
// For example, free-pro-team@latest corresponds to dotcom,
// enterprise-server@2.22 corresponds to ghes-2.22,
// and github-ae@latest corresponds to ghae
const graphqlVersion = currentVersionObj.miscVersionName
req.context.graphql = {
schemaForCurrentVersion: require(`../../lib/graphql/static/schema-${graphqlVersion}`),
previewsForCurrentVersion: previews[graphqlVersion],
upcomingChangesForCurrentVersion: upcomingChanges[graphqlVersion],
prerenderedObjectsForCurrentVersion: prerenderedObjects[graphqlVersion],
explorerUrl,
changelog
}
return next()
}