royal-thing/needed.js

A process that restarts the local registrant when needed

// Generated by CoffeeScript 2.4.1
(function() {
  // First let's define what we mean by "when needed". We mean that changes were brought to any of the `registrant_*` fields in the global-number document that references them.
  var assert, debug, fields, needed, pkg;

  fields = [
    'registrant_expiry',
    'registrant_host',
    'registrant_password',
    'registrant_realm',
    'registrant_domain',
    'registrant_remote_ipv4', // legacy
    'registrant_socket',
    'registrant_username',
    'registrant_proxy'
  ];

  // However since calls can't be placed if the `account` field is empty, we don't need to be alerted of changes in that case. Also, obviously the changes only apply to a host that is listed as the `registrant_host`.
  needed = function(local_host, old_doc, new_doc) {
    var changed, i, len, name, value;
    assert(local_host != null, `${pkg.name}: needed: missing localhost`);
    assert(old_doc != null, `${pkg.name}: needed: missing old_doc`);
    assert(new_doc != null, `${pkg.name}: needed: missing new_doc`);
    changed = false;
    value = function(doc, name) {
      var host, ref, ref1;
      if (doc.account == null) {
        return null;
      }
      if (doc._deleted || doc.disabled) {
        return null;
      }
      host = (ref = doc.registrant_host) != null ? ref.split(':')[0] : void 0;
      if (host !== local_host) {
        return null;
      }
      return (ref1 = doc[name]) != null ? ref1 : null;
    };
    for (i = 0, len = fields.length; i < len; i++) {
      name = fields[i];
      (function(name) {
        var new_value, old_value;
        old_value = value(old_doc, name);
        new_value = value(new_doc, name);
        if (old_value !== new_value) {
          debug('Field changed', name, old_value, new_value);
          return changed = true;
        }
      })(name);
    }
    return changed;
  };

  module.exports = needed;

  assert = require('assert');

  pkg = require('./package.json');

  debug = (require('debug'))(`${pkg.name}:needed:trace`);

}).call(this);