express-lambda/dist/api_gateway.js

Make AWS lambda behave like an express app

"use strict";

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var aws = require("aws-sdk");
var async = require("async");
var awsResponse = require("./aws_response");
var log = require("./log");

var ApiGateway = function () {
  function ApiGateway(name) {
    _classCallCheck(this, ApiGateway);

    this.name = name;
    this.id = null;
    this.rootResourceId = null;
    this.accountNum = null;
    this._region = process.env.AWS_REGION;
    this._awsApiGw = new aws.APIGateway({ region: this._region });
    this._iam = new aws.IAM({ region: this._region });
  }

  _createClass(ApiGateway, [{
    key: "build",
    value: function build(done) {
      async.series([this._createGateway.bind(this), this._discoverRootResource.bind(this), this._discoverAccountNumber.bind(this)], done);
    }
  }, {
    key: "deploy",
    value: function deploy(done) {
      log.info("Creating API Gateway deployment");
      this._awsApiGw.createDeployment({
        restApiId: this.id,
        stageName: process.env.AWS_ENVIRONMENT
      }, awsResponse.cb("createDeployment", done));
    }
  }, {
    key: "url",
    value: function url() {
      return "https://" + this.id + ".execute-api." + this._region + ".amazonaws.com/" + process.env.AWS_ENVIRONMENT;
    }
  }, {
    key: "_createGateway",
    value: function _createGateway(done) {
      var _this = this;

      log.info("Creating API Gateway");
      this._awsApiGw.createRestApi({
        name: this.name
      }, awsResponse.cb("createRestApi", done, function (data) {
        _this.id = data.id;
      }));
    }
  }, {
    key: "_discoverRootResource",
    value: function _discoverRootResource(done) {
      var _this2 = this;

      log.info("Discovering root resource");
      this._awsApiGw.getResources({
        restApiId: this.id
      }, awsResponse.cb("getResources", done, function (data) {
        _this2.rootResourceId = data.items[0].id;
      }));
    }
  }, {
    key: "_discoverAccountNumber",
    value: function _discoverAccountNumber(done) {
      var _this3 = this;

      log.info("Discovering account number");
      this._iam.getUser({}, awsResponse.cb("getUser", done, function (data) {
        _this3.accountNum = data.User.UserId;
      }));
    }
  }]);

  return ApiGateway;
}();

module.exports = ApiGateway;