metallic-launcher/lib/cluster/leader/leader-factory.js

Service launcher for metallic

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _cluster = require('cluster');

var _cluster2 = _interopRequireDefault(_cluster);

var _os = require('os');

var _os2 = _interopRequireDefault(_os);

var _metallicInterfaces = require('metallic-interfaces');

var _listenerLoggerMixin = require('../../listener-logger-mixin');

var _listenerLoggerMixin2 = _interopRequireDefault(_listenerLoggerMixin);

var _sigusr2Listener = require('./sigusr2-listener');

var _sigusr2Listener2 = _interopRequireDefault(_sigusr2Listener);

var _sighupListener = require('./sighup-listener');

var _sighupListener2 = _interopRequireDefault(_sighupListener);

var _serverExitListener = require('./server-exit-listener');

var _serverExitListener2 = _interopRequireDefault(_serverExitListener);

var _leaderRebootListenerMixin = require('./leader-reboot-listener-mixin');

var _leaderRebootListenerMixin2 = _interopRequireDefault(_leaderRebootListenerMixin);

var _leaderReforkListenerMixin = require('./leader-refork-listener-mixin');

var _leaderReforkListenerMixin2 = _interopRequireDefault(_leaderReforkListenerMixin);

var _leaderRotateLogListenerMixin = require('./leader-rotate-log-listener-mixin');

var _leaderRotateLogListenerMixin2 = _interopRequireDefault(_leaderRotateLogListenerMixin);

var _leader = require('./leader');

var _leader2 = _interopRequireDefault(_leader);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

class LeaderFactory extends _metallicInterfaces.FactoryInterface {
  static create({ metrics, logger } = {}) {
    const serverPoolSize = _os2.default.cpus().length;

    const LoggedSigusr2Listener = logger ? _listenerLoggerMixin2.default.mix(_sigusr2Listener2.default) : _sigusr2Listener2.default;
    const sigusr2Listeners = new LoggedSigusr2Listener({ logger, emitter: process });

    const LoggedServerExitListener = logger ? _listenerLoggerMixin2.default.mix(_serverExitListener2.default) : _serverExitListener2.default;
    const serverExitListeners = new LoggedServerExitListener({ logger, emitter: process });

    const LoggedSighupListener = logger ? _listenerLoggerMixin2.default.mix(_sighupListener2.default) : _sighupListener2.default;
    const sighupListeners = new LoggedSighupListener({ logger, emitter: process });

    const LeaderOnSteroids = _leaderRebootListenerMixin2.default.mix(_leaderReforkListenerMixin2.default.mix(_leaderRotateLogListenerMixin2.default.mix(_leader2.default)));

    return new LeaderOnSteroids({
      sighupListeners,
      serverExitListeners,
      sigusr2Listeners,
      cluster: _cluster2.default,
      serverPoolSize
    });
  }

  static shouldCreate(clusterOn) {
    return _leader2.default.is(clusterOn);
  }
}
exports.default = LeaderFactory;
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