public void ReportBackoffWriteIsLoggedAgainAfterReportDisabledWasCalled()
{
using (var listener = new TestEventListener())
{
const long AllKeywords = -1;
listener.EnableEvents(TelemetryChannelEventSource.Log, EventLevel.Error, (EventKeywords)AllKeywords);
var manager = new BackoffLogicManager(TimeSpan.Zero);
manager.ReportBackoffEnabled(200);
manager.ReportBackoffEnabled(200);
manager.ReportBackoffDisabled();
manager.ReportBackoffDisabled();
manager.ReportBackoffEnabled(200);
manager.ReportBackoffEnabled(200);
var traces = listener.Messages.ToList();
Assert.Equal(3, traces.Count);
Assert.Equal(2, traces[0].EventId);
Assert.Equal(1, traces[1].EventId);
Assert.Equal(2, traces[2].EventId);
}
}
public void IncrementConsecutiveErrorsAfterMinIntervalToUpdateConsecutiveErrorsPassed()
{
BackoffLogicManager manager = new BackoffLogicManager(TimeSpan.Zero, TimeSpan.FromMilliseconds(1));
manager.ReportBackoffEnabled(500);
Thread.Sleep(1);
manager.ReportBackoffEnabled(500);
Assert.Equal(2, manager.ConsecutiveErrors);
}
public void FirstErrorDelayIsSameAsSlotDelay()
{
var manager = new BackoffLogicManager(TimeSpan.Zero);
manager.ReportBackoffEnabled(500);
manager.GetBackOffTimeInterval(string.Empty);
Assert.Equal(TimeSpan.FromSeconds(10), manager.CurrentDelay);
}
public void ReportBackoffWriteDoesNotLogMessagesBeforeIntervalPasses()
{
using (var listener = new TestEventListener())
{
const long AllKeywords = -1;
listener.EnableEvents(TelemetryChannelEventSource.Log, EventLevel.Error, (EventKeywords)AllKeywords);
var manager = new BackoffLogicManager(TimeSpan.FromSeconds(20));
manager.ReportBackoffEnabled(200);
manager.ReportBackoffEnabled(200);
var traces = listener.Messages.ToList();
Assert.Equal(0, traces.Count);
}
}
public void FirstErrorDelayIsSameAsSlotDelay()
{
var manager = new BackoffLogicManager(TimeSpan.Zero);
manager.ReportBackoffEnabled(500);
manager.ScheduleRestore(string.Empty, () => null);
Assert.Equal(TimeSpan.FromSeconds(10), manager.CurrentDelay);
}
public void ConsecutiveErrorsCanAlwaysBeResetTo0()
{
BackoffLogicManager manager = new BackoffLogicManager(TimeSpan.Zero, TimeSpan.FromDays(1));
manager.ReportBackoffEnabled(500);
manager.ResetConsecutiveErrors();
Assert.Equal(0, manager.ConsecutiveErrors);
}
public void ReportBackoffWriteDoesNotLogMessagesBeforeIntervalPasses()
{
// this test fails when run in parallel with other tests
using (var listener = new TestEventListener(waitForDelayedEvents: false))
{
const long AllKeywords = -1;
listener.EnableEvents(TelemetryChannelEventSource.Log, EventLevel.Error, (EventKeywords)AllKeywords);
var manager = new BackoffLogicManager(TimeSpan.FromSeconds(20));
manager.ReportBackoffEnabled(200);
manager.ReportBackoffEnabled(200);
var traces = listener.Messages.ToList();
Assert.AreEqual(0, traces.Count);
}
}
public void ReportBackoffWritesLogMessagesAfterIntervalPasses()
{
using (var listener = new TestEventListener())
{
const long AllKeywords = -1;
listener.EnableEvents(TelemetryChannelEventSource.Log, EventLevel.Error, (EventKeywords)AllKeywords);
var manager = new BackoffLogicManager(TimeSpan.FromMilliseconds(10));
System.Threading.Thread.Sleep(10);
manager.ReportBackoffEnabled(200);
manager.ReportBackoffEnabled(200);
var traces = listener.Messages.ToList();
Assert.Equal(1, traces.Count);
}
}
public void DoNotIncrementConsecutiveErrorsMoreOftenThanOnceInminIntervalToUpdateConsecutiveErrors()
{
BackoffLogicManager manager = new BackoffLogicManager(TimeSpan.Zero, TimeSpan.FromDays(1));
Task[] tasks = new Task[10];
for (int i = 0; i < 10; ++i)
{
tasks[i] = TaskEx.Run(() => manager.ReportBackoffEnabled(500));
}
Task.WaitAll(tasks);
Assert.Equal(1, manager.ConsecutiveErrors);
}