public Task StartMonitor(CancellationToken externalCancellationToken = default(CancellationToken))
{
if (MonitorState == MonitorState.Running)
{
Log.Error("Trying to run a running monitor");
return(Task.CompletedTask);
}
CancellationTokenSource = new CancellationTokenSource();
//Link the current cancellation token with the given one, for support external cancellation
if (externalCancellationToken != default(CancellationToken))
{
CancellationTokenSource =
CancellationTokenSource.CreateLinkedTokenSource(externalCancellationToken,
CancellationTokenSource.Token);
CancellationTokenSource.Token.Register(UpdateState);
}
Prepare();
MonitorState = MonitorState.Prepared;
Log.Information("Monitor {@Monitor} State: {@MonitorState}", this.GetType().Name, MonitorState);
CancellationToken token = CancellationTokenSource.Token;
return(Task.Factory.StartNew(() =>
{
MonitorState = MonitorState.Running;
Log.Information("Monitor {@Monitor} State: {@MonitorState}", this.GetType().Name, MonitorState);
using (LogContext.PushProperty("MonitorName", this.GetType().Name))
{
while (!CancellationTokenSource.IsCancellationRequested)
{
MonitorResult monitorResult = Action();
Log.Information("------------- {@monitorResult} -------------", monitorResult.ResultState);
if (monitorResult.ResultState == ResultState.FAIL)
{
OnError(monitorResult);
}
try
{
Task.Delay(MonitorSettings.SamplingRate, token).Wait();
}
catch (Exception)
{
break;
}
}
}
}, token));
}
protected virtual void OnError(MonitorResult monitorResult)
{
ErrorEvent?.Invoke(this, monitorResult);
}
