Пример #1
0
        private bool RefreshRepository()
        {
            lock (this.cache)
            {
                var alarmList = this.repository.Load();
                if (alarmList == null)
                {
                    return(false);
                }

                var alarms           = alarmList.ToDictionary(x => x.Id);
                var deletedAlarmKeys = this.cache.Keys.Where(x => !alarms.ContainsKey(x)).ToArray();
                foreach (var key in deletedAlarmKeys)
                {
                    if (this.OnAlarmRemoval != null)
                    {
                        this.OnAlarmRemoval.Invoke(this, new AlarmEventArgs(this.cache[key]));
                    }

                    this.cache.Remove(key);
                }

                foreach (var alarm in alarms.Values)
                {
                    IAlarm cachedAlarm = null;
                    if (this.cache.TryGetValue(alarm.Id, out cachedAlarm))
                    {
                        if (!this.valueComparer.Equals(cachedAlarm, alarm))
                        {
                            cachedAlarm.Import(alarm);

                            if (this.OnAlarmUpdate != null)
                            {
                                this.OnAlarmUpdate.Invoke(this, new AlarmEventArgs(cachedAlarm));
                            }
                        }
                    }
                    else
                    {
                        cachedAlarm = alarm;
                        this.cache.Add(alarm.Id, cachedAlarm);
                        if (this.OnAlarmAdd != null)
                        {
                            this.OnAlarmAdd.Invoke(this, new AlarmEventArgs(cachedAlarm));
                        }
                    }

                    this.CheckAlarmStatus(cachedAlarm);
                }

                return(true);
            }
        }