public async Task When_flushing_should_use_parallel_sends()
{
// this test aims at simulating the consumers that are slow enough to fill parallelism of reporter
// it asserts that no progress is done till one of them finishes
const int max = RawDataReporter.MaxParallelConsumers;
var payloads = new ConcurrentQueue <byte[]>();
var tcs = new TaskCompletionSource <object>();
var semaphore = new SemaphoreSlim(0, max);
var counter = 0;
Task Report(byte[] payload, CancellationToken cancellationToken)
{
var value = ReadValues(payload)[0];
if (value < max)
{
payloads.Enqueue(payload);
semaphore.Release();
return(tcs.Task);
}
payloads.Enqueue(payload);
Interlocked.Increment(ref counter);
return(Task.FromResult(0));
}
var reporter = new RawDataReporter(Report, buffer, WriteEntriesValues, flushSize: 1, maxFlushSize: 1, maxSpinningTime: TimeSpan.MaxValue);
reporter.Start();
for (var i = 0; i < max; i++)
{
buffer.TryWrite(i);
}
// additional write
buffer.TryWrite(max);
for (var i = 0; i < max; i++)
{
await semaphore.WaitAsync();
}
// no new reports scheduled before previous complete
Assert.AreEqual(0, counter);
// complete all the reports
tcs.SetResult("");
await reporter.Stop();
// should have run the additional one
Assert.AreEqual(1, counter);
Assert.AreEqual(max + 1, payloads.Count);
}
public async Task When_stopped()
{
var reporter = new RawDataReporter(sender.ReportPayload, buffer, WriteEntriesValues, int.MaxValue, TimeSpan.MaxValue);
reporter.Start();
buffer.TryWrite(1);
buffer.TryWrite(2);
await reporter.Stop();
AssertValues(new long[] { 1, 2 });
}
public async Task When_flush_size_is_reached_only_maximum_number_is_flushed()
{
var reporter = new RawDataReporter(sender.ReportPayload, buffer, WriteEntriesValues, 4, TimeSpan.MaxValue);
reporter.Start();
buffer.TryWrite(1);
buffer.TryWrite(2);
buffer.TryWrite(3);
buffer.TryWrite(4);
AssertValues(new long[] { 1, 2 }, new long[] { 3, 4 });
await reporter.Stop();
}
public async Task When_max_spinning_time_is_reached()
{
var maxSpinningTime = TimeSpan.FromMilliseconds(100);
var reporter = new RawDataReporter(sender.ReportPayload, buffer, WriteEntriesValues, int.MaxValue, maxSpinningTime);
reporter.Start();
buffer.TryWrite(1);
buffer.TryWrite(2);
await Task.Delay(maxSpinningTime.Add(TimeSpan.FromMilliseconds(200)));
AssertValues(new long[] { 1, 2 });
await reporter.Stop();
}
public async Task When_highthrouput_endpoint_shuts_down()
{
const int testSize = 10000;
var queue = new ConcurrentQueue <byte[]>();
Task Send(byte[] data, CancellationToken cancellationToken)
{
queue.Enqueue(data);
return(Task.Delay(TimeSpan.FromMilliseconds(100), cancellationToken)); // delay to make it realistically long
}
var reporter = new RawDataReporter(Send, buffer, WriteEntriesValues);
reporter.Start();
// write values
for (var i = 0; i < testSize; i++)
{
while (buffer.TryWrite(i) == false)
{
// spin till it's written
}
}
await reporter.Stop();
var values = new HashSet <long>();
foreach (var current in queue.ToArray().Select(ReadValues))
{
foreach (var v in current)
{
values.Add(v);
}
}
Assert.AreEqual(testSize, values.Count);
}