nodeTemplate.js

// Define variables to access each service. Note the usage of
// node.js modules via the "require(...)" calls.

var services = {
  countries: require("./countries_service"),
  regions: require("./regions_service"),
  cities: require("./cities_service")
}

function sendResults(res, params, status, statusText, headers, result) {
  // Send a HTTP response, with the given "status" code and a
  // "statusText" explanation, a "Connection:close" header so the
  // connection won't be kept alive, a "Content-Type:application/json"
  // header to specify the result type, some optional additional headers,
  // and a result (if any) in JSON or JSONP format.
}

function routeCall(req, res, body) {
  // Analyze the URL and the request body (if present) and the
  // pathname itself to get query parameters. Check whether the result
  // will be in JSON or JSONP format by seeing if a "callback" parameter
  // is given.
  //
  // If a "_method" parameter was included, let it override the
  // actual HTTP method.
  //
  // Analyze the URL to decide what service to call, and if
  // present in the "services" array above, dispatch the call to
  // it, with a callback pointing to the "sendResults" function;
  // otherwise, send back a 404 error.
}

process.on('uncaughtException', function(err) {
  // Provide for unexpected exceptions, so the server won't crash
  // Usually, report the error.
})

require("http").createServer(function (req, res) {
  // This is the main function, that actually acts as a server
  // We'll listen on port 8888, just not to interfere with Apache
  //
  // For PUT/POST methods, wait until the complete request body
  // has been read, and then call routeCall.
  // For GET/DELETE methods, call routeCall directly
  }
}).listen(8888)