fastify-gql-upload

install

npm i fastify-gql-upload

usage

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

fastify.register(require('fastify-gql-upload'), {
  // options passed to processRequest from graphql-upload
})

example

const GQL = require('fastify-gql')
const { GraphQLUpload } = require('graphql-upload')
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('fastify-gql-upload'))

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

  done()
}