Ackee/src/serverless.js at develop · islewis/Ackee · GitHub

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'use strict'

const { ApolloServer } = require('apollo-server-lambda')

const config = require('./utils/config')

const connect = require('./utils/connect')

const fullyQualifiedDomainNames = require('./utils/fullyQualifiedDomainNames')

const createApolloServer = require('./utils/createApolloServer')

const { createServerlessContext } = require('./utils/createContext')

if (config.dbUrl == null) {

throw new Error('MongoDB connection URI missing in environment')

}

connect(config.dbUrl)

const apolloServer = createApolloServer(ApolloServer, {

context: createServerlessContext,

})

const origin = (origin, callback) => {

if (config.autoOrigin === true) {

fullyQualifiedDomainNames()

.then((names) => callback(

null,

names.flatMap((name) => [ `http://${ name }`, `https://${ name }`, name ]),

))

.catch((error) => callback(error, false))

return

}

if (config.allowOrigin === '*') {

callback(null, true)

return

}

if (config.allowOrigin != null) {

callback(null, config.allowOrigin.split(','))

return

}

callback(null, false)

return

}

exports.handler = (event, context) => {

// Set request context which is missing on Vercel:

// https://stackoverflow.com/questions/71360059/apollo-server-lambda-unable-to-determine-event-source-based-on-event

if (event.requestContext == null) event.requestContext = context

const handler = apolloServer.createHandler({

expressGetMiddlewareOptions: {

cors: {

origin,

credentials: true,

methods: 'GET,POST,PATCH,OPTIONS',

allowedHeaders: 'Content-Type, Authorization, Time-Zone',

})

return handler(event, context)

}

Ackee/src/serverless.js at develop · islewis/Ackee · GitHub

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