public void Records_ForEmptyCounter_YieldsEmptySingleResultSetForCurrentPeriod()
{
var sut = new PerformanceStats(TimeSpan.FromMinutes(5), It.IsAny<int>());
var item = sut.Records.First();
item.StartTime.Should().BeWithin(TimeSpan.FromMilliseconds(50)).Before(DateTime.Now);
item.EndTime.Should().BeWithin(TimeSpan.FromMilliseconds(50)).Before(DateTime.Now.AddMinutes(5));
}
public async Task TidyRecords_WhenAddingRecords_ShouldNotOverflowMaxRecordCount()
{
var sut = new PerformanceStats(TimeSpan.FromMilliseconds(30), 3);
await Task.Delay(150);
var records = (Queue<PerformanceRecord>)sut.Records;
sut.TidyRecords();
records.Count.Should().Be(3);
}
public async Task MessageProcessed_ShouldGrowQueueIfNewEventIsLaterThanLatestTimePeriod()
{
var sut = new PerformanceStats(TimeSpan.FromMilliseconds(50), 3);
sut.MessageProcessed("something arbitrary");
await Task.Delay(60);
sut.Records.Should().HaveCount(2);
await Task.Delay(60);
sut.MessageProcessed("something arbitrary");
sut.Records.Should().HaveCount(3);
}
public async Task MessageProcessed_ShouldNotGrowQueueIfNewEventIsWithinTheLatestTimePeriod()
{
var sut = new PerformanceStats(TimeSpan.FromHours(1), 3);
await Task.Delay(5);
sut.MessageProcessed("something arbitrary");
await Task.Delay(5);
sut.Records.Should().HaveCount(1);
sut.MessageProcessed("something arbitrary");
await Task.Delay(5);
sut.Records.Should().HaveCount(1);
}
public async Task TidyRecords_WhenAddingRecords_ShouldGrowUpToMaximumSize()
{
var sut = new PerformanceStats(TimeSpan.FromMilliseconds(50), 3);
await Task.Delay(60);
sut.MessageProcessed("something arbitrary");
sut.Records.Should().HaveCount(2);
await Task.Delay(60);
sut.MessageProcessed("something arbitrary");
sut.Records.Should().HaveCount(3);
sut.MessageProcessed("something arbitrary");
sut.Records.Should().HaveCount(3);
}
internal EventStreamSubscriber(EventStreamSubscriberSettings settings)
{
_connection = settings.Connection;
_eventHandlerResolver = settings.EventHandlerResolver;
_streamPositionRepository = settings.StreamPositionRepository;
_subscriptionTimerManager = settings.SubscriptionTimerManager;
_eventTypeResolver = settings.EventTypeResolver;
_defaultPollingInterval = settings.DefaultPollingInterval;
_sliceSize = settings.SliceSize;
_longPollingTimeout = settings.LongPollingTimeout;
_performanceMonitors = settings.PerformanceMonitors;
_log = settings.Log;
StreamSubscriberMonitor = settings.SubscriberIntervalMonitor;
AllEventsStats = new PerformanceStats(settings.MessageProcessingStatsWindowPeriod, settings.MessageProcessingStatsWindowCount);
ProcessedEventsStats = new PerformanceStats(settings.MessageProcessingStatsWindowPeriod, settings.MessageProcessingStatsWindowCount);
}
public async Task TidyRecords_WhenAddingRecords_ShouldFillInGapsInBuketsIfNecessary()
{
var sut = new PerformanceStats(TimeSpan.FromMilliseconds(30), 3);
await Task.Delay(150);
var records = (Queue<PerformanceRecord>)sut.Records;
sut.TidyRecords();
var now = DateTime.Now;
var last = records.Skip(2).First();
var middle = records.Skip(1).First();
var first = records.Skip(0).First();
last.EndTime.Should().BeWithin(TimeSpan.FromMilliseconds(50)).After(now);
last.EndTime.Should().BeWithin(TimeSpan.FromMilliseconds(50)).Before(now);
var oneMS = TimeSpan.FromMilliseconds(1);
last.StartTime.Should().BeWithin(oneMS).After(middle.EndTime);
middle.StartTime.Should().BeWithin(oneMS).After(first.EndTime);
}
public void Records_ForEmptyCounter_YieldsEmptySingleResultSet()
{
var sut = new PerformanceStats(It.IsAny<TimeSpan>(), It.IsAny<int>());
sut.Records.Should().HaveCount(1);
}
public async Task RecordsAfter_ShouldReturnAllRecordsStartingAfterTheSuppliedDate()
{
var sut = new PerformanceStats(TimeSpan.FromMilliseconds(30), 3);
var records = (Queue<PerformanceRecord>)sut.Records;
records.Clear();
var first = new PerformanceRecord(It.IsAny<TimeSpan>(), new DateTime(1, 2, 3));
var second = new PerformanceRecord(It.IsAny<TimeSpan>(), first.StartTime.AddTicks(1));
records.Enqueue(first);
records.Enqueue(second);
var foundRecords = sut.RecordsAfter(first.StartTime);
foundRecords.Should().BeEquivalentTo(new[] {second});
}
