@silvermine/apigateway-utils/src/SilvermineResponseBuilder.js

Utility functions for working with AWS API Gateway

'use strict';

var _ = require('underscore'),
    RB = require('./ResponseBuilder'),
    CONTENT_TYPES = require('./contentTypes');

module.exports = RB.extend({

   init: function() {
      var now = new Date(),
          builtOn = [];

      this._super();
      this.allowCORS();
      this.supportJSONP('callback');
      this.cacheForMinutes(30);

      builtOn.push(process.env.AWS_REGION);
      builtOn.push(process.env.AWS_LAMBDA_FUNCTION_NAME);
      builtOn.push(process.env.AWS_LAMBDA_FUNCTION_VERSION);
      builtOn.push(process.env.CODE_VERSION);

      this.header('X-Built-On', builtOn.join(':'));
      this.header('X-Page-Built', now.toUTCString());
   },

   toResponse: function(req) {
      this.header('X-Elapsed-Millis', new Date().getTime() - req.started());
      this.header('X-RequestID', req.context('awsRequestId'));
      return this._super(req);
   },

});

_.extend(module.exports, CONTENT_TYPES);