Not able to access response object from context in apollo-server-fastify

Previously I was using apollo-server-express and I wanted to migrate to fastify so I change it to apollo-server-fastify. But it started giving lots of issues.

One of such issue is - Not able to access res object from context function. Below code was working perfectly but res object itself was not available with apollo-server-fastify

context: async ({ req, res, connection }) => {
// res <--------- undefined
    if (connection) {
      return {
        models,
      }
    }
    if (req) {
      const me = await getMe(req, res)
      return {
        models,
        me,
        secret: process.env.SECRET,
      }
    }
  },

[blacksmoke26]

Yeah, the same issue but you can pass reply instance manually.

File plugins/fastify-apollo-server/index.js

const fp = require('fastify-plugin');
const {ApolloServer} = require('apollo-server-fastify');

// **** Plugin: plugins/fastify-apollo-server/index.js
module.exports = fp(async ( fastify, opts, next ) => {
  const server = new ApolloServer({
    /* ... */
    context: async request => {
      const {reply} = request;
      return {
        request,
        reply, // res: reply,
        app: fastify,
      };
    },
  });
  
  fastify.addHook('preHandler', async ( request, reply ) => {
    if ( String(request.req.url).startsWith('/graphql') ) {
      request.reply = reply;
    }
  });
  
  fastify.register(server.createHandler());
  
  next();
}, {
  name: 'fastify-apollo-server',
});

File: init-server.js

const app = require('fastify')();

// Plugins
app.register(require('plugins/fastify-apollo-server'));

(async function () {
  await app.listen(3000);
})();

[HW13]

#3895 is awaiting review. In the meantime I’ve published a standalone version of apollo-server-fastify with the fix applied, here: https://github.com/autotelic/apollo-server-fastify.