Falcor with express featuring split route files and route access logging

falcor-express-server-with-logging.js

// ...
// ... SNIP: You should include and wire up express as needed before this
// ...

// Falcor deps
var falcor = require('falcor');
var falcorExpress = require('falcor-express');
var bodyParser = require('body-parser');

// ROUTES
var router = require('./router.js');

// Set up the body to return json
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

// Add a static public route for your front end index.html
app.use(express.static('src/public'));

// Falcor middleware
app.use('/model.json', falcorExpress.dataSourceRoute(function (req, res) {
  
  // NOTICE: you should change this line to get the user ID from the session
  var routerInstance = new router('MyUserId'); 

  return {

    // Wrap the falcor router so that we can
    // output logging information
    get: function(paths) {
      return routerInstance.get(paths)
        .doAction(function(output) {
            console.log(routerInstance.userId + ' requested paths ' + JSON.stringify(paths));
            console.log('And received:' + JSON.stringify(output, null, 2));
        });
    },
    set: function(jsong) {
      return routerInstance.set(jsong)
        .doAction(function(output) {
            console.log(routerInstance.userId + ' set the following jsong ' + JSON.stringify(jsong));
            console.log('And received:' + JSON.stringify(output, null, 2));
        });
    },
    call: function(callPath, args, suffixes, paths) {
      return routerInstance.call(callPath, args, suffixes, paths)
        // .doAction(function(output) {
        //   console.log('a call was made', arguments);
        // });
    }
  };
}));

// ...
// ... SNIP: You should start express listening after this
// ...

router.js

var Router = require('falcor-router');

var routes = require('./routes');
  
// Create a Router base class and load up our routes
var VetPetRouterBase = Router.createClass(routes.load(this));

var VetPetRouter = function(userId){
    // Invoking the base class constructor
    VetPetRouterBase.call(this)
    this.userId = userId;
    console.log('a call was made with user id:' + this.userId);
  };

// Creating a derived class using JavaScript's classical inheritance pattern
VetPetRouter.prototype = Object.create(VetPetRouterBase.prototype);

module.exports = function(userId) {
	return new VetPetRouter(userId);
}

routes.js

// This files loads, combines, and exports an array of routes
module.exports.load = function(router) {
  return [].concat(
    require('./routes.veterinarians.js'),
    require('./routes.pets.js')
  );
};

routes.pets.js

// Export an array of pet routes
module.exports = [
  {
    route: 'pets[{integers:petIds}]["name"]',
    get: function(pathSet) {
      // .... Get information from the pets service
      console.log('a "get" was made by user id:' + this.userId);
    }
  },
  {
    route: 'pets[{integers:petIds}]["rating"]',
    get: function(pathSet) {
      // .... Get information from the pet rating service
    }
  }
];

routes.veterinarians.js

// Export an array of pet routes
module.exports = [
  {
    route: 'veterinarians[{integers:veterinarianIds}]["name"]',
    get: function(pathSet) {
      // .... Get information from the veterinarian service
    }
  },
  {
    route: 'veterinarians[{integers:veterinarianIds}]["rating"]',
    get: function(pathSet) {
      // .... Get information from the veterinarian rating service
    }
  }
];