public void Start(Configuration c)
{
if (Notifier.StartEventSaved && !Notifier.EndEventSaved)
{
// Ensure we do not dispose of the Observers if they are in the middle of an alert cycle.
return;
}
Subscription?.Dispose();
ConfigurationSync?.Dispose();
RefreshSettings(c);
Logger.Trace("New threshold {0}", c.Thresholds.CriticalLoad);
Logger.Trace("New interval {0}", c.Intervals.CriticalNotification);
ConfigurationSync = Observable
.Interval(TimeSpan.FromMinutes(ConfigurationRefreshTime)) // Refresh the settings and counters every X minutes
.Select(i => ConfigurationReader.Read())
.DistinctUntilChanged()
.Subscribe(Start);
Counter = new CpuPerformanceCounter();
if (Enabled)
{
var alarms = Observable.Interval(c.Intervals.Measurement) // generate endless sequence of events
.Select(i => Counter.Value) // convert event index to cpu load value
.Select(load => load > c.Thresholds.CriticalLoad); // is critical? convert load to boolean
Subscription = alarms // here we throttle critical alarms
.Where(critical => critical).Sample(c.Intervals.Notification).Merge(
// allow critical notification no more often then ...
alarms // here we throttle non critical alarms
.Where(critical => !critical).Sample(c.Intervals.Notification)) // allow non critical notification no more often then ...
.Subscribe(Notifier.Notify); // our action to send notifications
}
}
public void Start(Configuration c)
{
if (Notifier.StartEventSaved && !Notifier.EndEventSaved)
{
// Ensure we do not dispose of the Observers if they are in the middle of an alert cycle.
return;
}
Subscription?.Dispose();
ConfigurationSync?.Dispose();
RefreshSettings(c);
Logger.Trace("New threshold {0}", c.Thresholds.CriticalLoad);
Logger.Trace("New interval {0}", c.Intervals.CriticalNotification);
ConfigurationSync = Observable
.Interval(TimeSpan.FromMinutes(ConfigurationRefreshTime)) // Refresh the settings and counters every X minutes
.Select(i => ConfigurationReader.Read())
.DistinctUntilChanged()
.Subscribe(Start);
Counter = new CpuPerformanceCounter();
if (Enabled)
{
var alarms = Observable.Interval(c.Intervals.Measurement) // generate endless sequence of events
.Select(i => Counter.Value) // convert event index to cpu load value
.Select(load => load > c.Thresholds.CriticalLoad); // is critical? convert load to boolean
Subscription = alarms // here we throttle critical alarms
.Where(critical => critical).Sample(c.Intervals.Notification).Merge(
// allow critical notification no more often then ...
alarms // here we throttle non critical alarms
.Where(critical => !critical).Sample(c.Intervals.Notification)) // allow non critical notification no more often then ...
.Subscribe(Notifier.Notify); // our action to send notifications
}
}
