service-router/lib/performBounce.js

router to bounce requests to either api or web servers

var url = require('url');
var inspect = require('eyespect').inspector();
var path = require('path');
var serviceDown = require(path.join(__dirname, './serviceDown'));
module.exports = function(req, res, bounce, server) {
  var parts = url.parse(req.url);
  var urlPath = parts.path
  var service = 'web';
  var apiPattern = /^\/api/;

  if (apiPattern.test(urlPath)) {
    service =  'api'
  }

  var ps = server.query(service);
  // inspect({service: service, req_headers: req.headers}, 'bouncing for service');
  // no servers available for the given service
  if (ps.length === 0) {
    inspect(service, 'no servers available');
    serviceDown(req, res, bounce, service);
    return;
  }

  inspect(urlPath, 'bouncing to service: ' + service + ' for url')
  // bounce api request to a random server registered with seaport
  var serverIndex = ps[Math.floor(Math.random()*ps.length)];
  inspect(serverIndex, 'bouncing now')
  bounce(serverIndex)
};