thingy-sci-base/index.js

A basic express abstraction for service thingies to directly inject post routes and handlers.

// Generated by CoffeeScript 2.7.0
//###########################################################
var Pipe, PipeWrap, Server, app, attachSCIFunctions, listenForRequests, mountMiddleWare, oldListen, port, routes;

import net from 'net';

//###########################################################
//region MonkeyPatch Server Prototype, from https://github.com/rubenv/node-systemd
Server = net.Server.prototype;

PipeWrap = process.binding('pipe_wrap');

Pipe = PipeWrap.Pipe;

oldListen = Server.listen;

//###########################################################
Server.listen = function() {
  var backlog, callback, self;
  self = this;
  backlog;
  callback;
  if (arguments[0] === 'systemd') {
    if (typeof arguments[1] === 'function') {
      callback = arguments[1];
    } else if (typeof arguments[1] === 'number') {
      backlog = arguments[1];
      callback = arguments[2];
    }
    if (!process.env.LISTEN_FDS || parseInt(process.env.LISTEN_FDS, 10) !== 1) {
      throw new Error('No or too many file descriptors received.');
    }
    if (callback) {
      self.once('listening', callback);
    }
    if ((PipeWrap.constants != null) && (PipeWrap.constants.SOCKET != null)) {
      self._handle = new Pipe(PipeWrap.constants.SOCKET);
    } else {
      self._handle = new Pipe();
    }
    self._handle.open(3);
    self._listen2(null, -1, -1, backlog);
  } else {
    oldListen.apply(self, arguments);
  }
  return self;
};

import express from 'express';

//###########################################################
//region internalProperties
routes = null;

port = null;

//###########################################################
app = express();

app.set("trust proxy", 1);

app.disable("etag");

app.use(express.json());

//endregion

//################################################################
mountMiddleWare = function(middleWare) {
  var fun, i, len;
  if (typeof middleWare === "function") {
    app.use(middleWare);
    return;
  }
  if (middleWare.length != null) {
    for (i = 0, len = middleWare.length; i < len; i++) {
      fun = middleWare[i];
      app.use(fun);
    }
    return;
  }
};

//###########################################################
attachSCIFunctions = function() {
  var fun, route;
  for (route in routes) {
    fun = routes[route];
    app.post(`/${route}`, fun);
  }
};

//################################################################
listenForRequests = function() {
  if (process.env.SOCKETMODE) {
    app.listen("systemd");
  } else {
    app.listen(port);
  }
};

//###########################################################
export var getExpressApp = function() {
  return app;
};

//###########################################################
export var prepareAndExpose = function(middleWare, leRoutes, lePort = 3333) {
  if (typeof leRoutes !== "object") {
    throw new Error("No routes Object provided!");
  }
  routes = leRoutes;
  port = process.env.PORT || lePort;
  if (middleWare != null) {
    mountMiddleWare(middleWare);
  }
  attachSCIFunctions();
  listenForRequests();
};