How can I use express middleware with only Apollo Server 2 graphql endpoints

I want to use morgan's tiny log statements for all of my routes, except graphql endpoints. I'm using express and Apollo 2, and have not been able to get middleware working with express. As the code sample shows, I can install middleware for the entire express app, but I want to limit the scope.

My first attempt was to create an express.router() and pass the router to apolloServer.applyMiddleware, but that doesn't seem to work.

I want to use morgan--but I also want to use express-jwt middleware.

import morgan from 'morgan'
import { mergeSchemas } from 'graphql-tools'
import { ApolloServer } from 'apollo-server-express'

import assessmentSchema from './assessment/schema'
import AssessmentAPI from './assessment/dataSource'

import userSchema from './user/schema'
import UserAPI from './user/dataSource'

/**
 * Installs apollo-server to handle requests under `path`
 * @param {*} app Express instance
 * @param {*} path route path, like '/graphql'
 */
export const createApi = (app, path) => {
  const dataSources = () => ({
    assessmentAPI: new AssessmentAPI({ store: 'intentionally undefined' }),
    userAPI: new UserAPI()
  })

  const schema = mergeSchemas({
    schemas: [assessmentSchema, userSchema]
  })

  morgan.token('graphql-query', req => {
    const { operationName } = req.body
    return `GRAPHQL: Operation Name: ${operationName}`
  })

  // TODO: Add custom logging middleware for GraphQL queries/mutations
  // The next line would add middleware to all of express, but I only want this style of logging for graphQL

  /*** Question is about the following line ***/
  // app.use(morgan(':graphql-query'))

  const apolloServer = new ApolloServer({ schema, dataSources })
  apolloServer.applyMiddleware({ app, path })
}

Thanks!

from How can I use express middleware with only Apollo Server 2 graphql endpoints