eventric/build/node/src/event_bus/event_bus.js

Build JavaScript applications with Behaviour-driven Domain Design. Based on DDD, BDD, CQRS and EventSourcing.

var EventBus, PubSub;

PubSub = require('eventric/src/pub_sub');

EventBus = (function() {
  function EventBus() {
    this._pubSub = new PubSub();
  }

  EventBus.prototype.subscribeToDomainEventWithAggregateId = function(eventName, aggregateId, handlerFn, options) {
    if (options == null) {
      options = {};
    }
    return this.subscribeToDomainEvent("" + eventName + "/" + aggregateId, handlerFn, options);
  };

  EventBus.prototype.subscribeToDomainEvent = function(eventName, handlerFn, options) {
    if (options == null) {
      options = {};
    }
    if (options.isAsync) {
      return this._pubSub.subscribeAsync(eventName, handlerFn);
    } else {
      return this._pubSub.subscribe(eventName, handlerFn);
    }
  };

  EventBus.prototype.subscribeToAllDomainEvents = function(handlerFn) {
    return this._pubSub.subscribe('DomainEvent', handlerFn);
  };

  EventBus.prototype.publishDomainEvent = function(domainEvent, callback) {
    if (callback == null) {
      callback = function() {};
    }
    return this._publish('publish', domainEvent, callback);
  };

  EventBus.prototype.publishDomainEventAndWait = function(domainEvent, callback) {
    if (callback == null) {
      callback = function() {};
    }
    return this._publish('publishAsync', domainEvent, callback);
  };

  EventBus.prototype._publish = function(publishMethod, domainEvent, callback) {
    if (callback == null) {
      callback = function() {};
    }
    return this._pubSub[publishMethod]('DomainEvent', domainEvent, (function(_this) {
      return function() {
        return _this._pubSub[publishMethod](domainEvent.name, domainEvent, function() {
          if (domainEvent.aggregate && domainEvent.aggregate.id) {
            return _this._pubSub[publishMethod]("" + domainEvent.name + "/" + domainEvent.aggregate.id, domainEvent, callback);
          } else {
            return callback();
          }
        });
      };
    })(this));
  };

  return EventBus;

})();

module.exports = EventBus;