Buggy: apollo-server-micro can't process request(limit > 1mb)

[wansj]

The source code of microGraphql in apollo-server-micro is as follow:

export function microGraphql(options: GraphQLOptions | MicroGraphQLOptionsFunction): RequestHandler {
  if (!options) {
    throw new Error('Apollo Server requires options.');
  }

  if (arguments.length > 1) {
    throw new Error(`Apollo Server expects exactly one argument, got ${arguments.length}`);
  }

  return async function (req: IncomingMessage, res: ServerResponse) {
    let query;
    if (req.method === 'POST') {
      try {
        query = await json(req);
      } catch (err) {
        query = undefined;
      }
    } else {
      query = url.parse(req.url, true).query;
    }

It uses the json body parser to parse the request. The json parser can only process the request length shorter than 1mb by default. When I uploaded a file(larger than 1mb), the program stopped executation at the line of query = await json(req)
How to overcome this obstacle?

[wansj]

Someone had issued a PR to fix it #677

[SanderVreeken]

Could you please tell me whether there is a way to make this work using the apollo-server-micro framework?

[wansj]

I solved this problem as this:
try {
await json(req, {limit: '1gb'})
} catch (e) {
throw e
}
return microGraphql({
schema,
context: {
db
}
})(req, res)
As you can see, I call json(req, {limit: '1gb'}) before calling the microGraphql method. The trick is json will cache the content it has prased in an inner WeakMap, thus when the microGraphql method call the json method again in its body, the content in the caching WeakMap will be returned.