public void PerformanceCounterProbeFirst()
{
PerformanceSample[] result;
var startTime = DateTimeOffset.UtcNow;
using (var playback = new Playback())
{
((IPlaybackConfiguration)playback).AddInput(
() => PerfCounterObservable.FromRealTime(TimeSpan.FromSeconds(1), @"\Processor(_Total)\% User Time").Take(1),
typeof(PerfCounterPartitionTypeMap),
typeof(PerfCounterTypeMap));
var query = playback.GetObservable <PerformanceSample>();
var enumerable = playback.BufferOutput(query);
playback.Run();
result = enumerable.ToArray();
}
var endTime = DateTimeOffset.UtcNow;
Assert.AreEqual(1, result.Length);
Assert.AreEqual("% User Time", result[0].CounterName, false, CultureInfo.InvariantCulture);
Assert.AreEqual("Processor", result[0].CounterSet, false, CultureInfo.InvariantCulture);
Assert.AreEqual("_Total", result[0].Instance, false, CultureInfo.InvariantCulture);
Assert.AreEqual(DateTimeKind.Local, result[0].Timestamp.Kind);
var dto = new DateTimeOffset(result[0].Timestamp);
Assert.IsTrue(dto >= startTime);
Assert.IsTrue(dto <= endTime);
}
static async Task Main(string[] args)
{
Console.WriteLine("Start");
IObservable <PerformanceSample> performanceCounterObservable =
PerfCounterObservable.FromRealTime(
TimeSpan.FromSeconds(1),
new[]
{
@"\Processor(_Total)\% Processor Time",
@"\Memory(_Total)\% Committed Bytes In Use",
@"\Memory(_Total)\Available MBytes"
});
VisualRxInitResult info = await VisualRxSettings.Initialize(
VisualRxWcfDiscoveryProxy.Create());
Console.WriteLine(info);
performanceCounterObservable
.Monitor("Step 1", 1)
.Where(v => v.CounterName == "% Processor Time")
.Monitor("Step 2", 1)
.Select(m => (int)(m.Value / 10))
.Select(m => new string('-', m))
.Subscribe(
v => Console.WriteLine(v));
Console.ReadKey();
}
private void TcpSyntheticCounters_Load(object sender, EventArgs e)
{
_playback = new Playback();
_playback.AddRealTimeSession(PerfCounterSessionName);
IObservable <PerformanceSample> perfCounters = PerfCounterObservable.FromRealTime(TimeSpan.FromSeconds(1), CounterPaths);
_subscription = perfCounters.ObserveOn(_chart).Subscribe(CounterAdded);
_playback.Start();
}
public void PerformanceCounterProbeBadCounterName()
{
Exception error = null;
using (PerfCounterObservable.FromRealTime(TimeSpan.FromHours(1), "blah")
.Subscribe(Observer.Create <PerformanceSample>(_ => { }, e => error = e)))
{
Assert.IsNotNull(error);
Assert.IsInstanceOfType(error, typeof(Exception));
Assert.AreEqual("PDH_CSTATUS_BAD_COUNTERNAME", error.Message);
}
}
public static string EventLogWithTx()
{
//http://blogs.endjin.com/2014/05/event-stream-manipulation-using-rx-part-2/
return(ExecuteVoidCommand(() =>
{
//NuGet package Tx to read from Windows Performance counters
var perfCounterStream = PerfCounterObservable.FromRealTime(TimeSpan.FromSeconds(1),
new[]
{
@"\Processor(_Total)\% Processor Time",
@"\Memory(_Total)\% Committed Bytes In Use",
@"\Memory(_Total)\Available MBytes"
})
.Buffer(TimeSpan.FromSeconds(1));
perfCounterStream.Subscribe();
//NuGet package Tx to read from Windows Event Log
var eventStream = EvtxObservable.FromLog("TestLog")
.Merge(EvtxObservable.FromLog("TestLog2"))
.Select(eventRecord => new Event()
{
Record = eventRecord
})
.ComposeLatest(perfCounterStream,
(evt, perfSamples) =>
{
evt.PerformanceSamples.AddRange(perfSamples);
return evt;
})
.Buffer(TimeSpan.FromSeconds(2));
using (eventStream.Subscribe(new EventObserver()))
{
Console.WriteLine("Press any key to unsubscribe");
Console.ReadKey();
}
}));
}