mercurius-upload

graphql-upload-minimal implementation plugin for Fastify & mercurius.

Plugin made for Fastify v5:

Install

``sh
yarn add mercurius-upload


or

npm i mercurius-upload

or

pnpm add mercurius-upload
`

Usage

Plugin options should conform to https://github.com/flash-oss/graphql-upload-minimal#type-processrequestoptions

`js
fastify.register(require('mercurius-upload'), {
// options passed to processRequest from graphql-upload-minimal
// maxFileSize: 1024 1024 5,
// maxFiles: 1,
})
`

> or

`ts
import MercuriusGQLUpload from 'mercurius-upload'

// ...

fastify.register(MercuriusGQLUpload, {
// options passed to processRequest from graphql-upload-minimal
})
`

Example

`js
const GQL = require('mercurius')
const { GraphQLUpload } = require('graphql-upload-minimal')
const fs = require('fs')
const util = require('util')
const stream = require('stream')
const path = require('path')

const pipeline = util.promisify(stream.pipeline)
const uploadsDir = path.resolve(__dirname, '../uploads')

const schema = / GraphQL /
scalar Upload

type Query {
add(x: Int, y: Int): Int
}

type Mutation {
uploadImage(image: Upload): Boolean
}

const resolvers = {
Upload: GraphQLUpload,
Query: {
add: async (_, { x, y }) => {
return x + y
},
},
Mutation: {
uploadImage: async (_, { image }) => {
const { filename, createReadStream } = await image
const rs = createReadStream()
const ws = fs.createWriteStream(path.join(uploadsDir, filename))
await pipeline(rs, ws)
return true
},
},
}

module.exports = function (fastify, options, done) {
fastify.register(require('mercurius-upload'))

fastify.register(GQL, {
schema,
resolvers,
graphiql: true,
})

done()
}
``