Agent.receive = function() {
    var events = JSON.parse(this.memory('events') || '[]');
    this.log('memory is: (' + typeof events + '):' + JSON.stringify(events));
    this.incomingEvents().forEach(function(event) {
        events.push(event.payload);
    });
    this.memory('events', JSON.stringify(events));
};
Agent.check = function() {
    var events = JSON.parse(this.memory('events') || '[]');
    this.log('memory is: (' + typeof events + '):' + JSON.stringify(events));
    var len = events.length;
    var tags = (this.options('tags') || '').split(',');
    var count = parseInt(this.options('count'), 10) || tags.length;
    var delimeter = this.options('delimeter') || ',';
    var tagPrefix = this.options('tagPrefix') || this.options('tagprefix') || '';
    if (len === 0) {
        return;
    }
    var idx = Math.floor(Math.random() * len);
    var event = events[idx];
    event.tags = tags
      .sort(function() {
        return 0.5 - Math.random();
      })
      .slice(0, count)
      .map(function(tag) {
          return tagPrefix + tag;
      })
      .join(delimeter);
    this.createEvent(event);
};