/// <exception cref="System.Exception"></exception>
private void TestChangeTrackerBackoff(CustomizableMockHttpClient mockHttpClient)
{
Uri testURL = GetReplicationURL();
CountDownLatch changeTrackerFinishedSignal = new CountDownLatch(1);
ChangeTrackerClient client = new _ChangeTrackerClient_234(changeTrackerFinishedSignal
, mockHttpClient);
ChangeTracker changeTracker = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, false, 0, client);
changeTracker.Start();
// sleep for a few seconds
Sharpen.Thread.Sleep(5 * 1000);
// make sure we got less than 10 requests in those 10 seconds (if it was hammering, we'd get a lot more)
NUnit.Framework.Assert.IsTrue(mockHttpClient.GetCapturedRequests().Count < 25);
NUnit.Framework.Assert.IsTrue(changeTracker.backoff.GetNumAttempts() > 0);
mockHttpClient.ClearResponders();
mockHttpClient.AddResponderReturnEmptyChangesFeed();
// at this point, the change tracker backoff should cause it to sleep for about 3 seconds
// and so lets wait 3 seconds until it wakes up and starts getting valid responses
Sharpen.Thread.Sleep(3 * 1000);
// now find the delta in requests received in a 2s period
int before = mockHttpClient.GetCapturedRequests().Count;
Sharpen.Thread.Sleep(2 * 1000);
int after = mockHttpClient.GetCapturedRequests().Count;
// assert that the delta is high, because at this point the change tracker should
// be hammering away
NUnit.Framework.Assert.IsTrue((after - before) > 25);
// the backoff numAttempts should have been reset to 0
NUnit.Framework.Assert.IsTrue(changeTracker.backoff.GetNumAttempts() == 0);
changeTracker.Stop();
try
{
bool success = changeTrackerFinishedSignal.Await(300, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
}
/// <exception cref="System.Exception"></exception>
private void TestChangeTrackerBackoff(CustomizableMockHttpClient mockHttpClient)
{
Uri testURL = GetReplicationURL();
CountDownLatch changeTrackerFinishedSignal = new CountDownLatch(1);
ChangeTrackerClient client = new _ChangeTrackerClient_234(changeTrackerFinishedSignal
, mockHttpClient);
ChangeTracker changeTracker = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, false, 0, client);
changeTracker.Start();
// sleep for a few seconds
Sharpen.Thread.Sleep(5 * 1000);
// make sure we got less than 10 requests in those 10 seconds (if it was hammering, we'd get a lot more)
NUnit.Framework.Assert.IsTrue(mockHttpClient.GetCapturedRequests().Count < 25);
NUnit.Framework.Assert.IsTrue(changeTracker.backoff.GetNumAttempts() > 0);
mockHttpClient.ClearResponders();
mockHttpClient.AddResponderReturnEmptyChangesFeed();
// at this point, the change tracker backoff should cause it to sleep for about 3 seconds
// and so lets wait 3 seconds until it wakes up and starts getting valid responses
Sharpen.Thread.Sleep(3 * 1000);
// now find the delta in requests received in a 2s period
int before = mockHttpClient.GetCapturedRequests().Count;
Sharpen.Thread.Sleep(2 * 1000);
int after = mockHttpClient.GetCapturedRequests().Count;
// assert that the delta is high, because at this point the change tracker should
// be hammering away
NUnit.Framework.Assert.IsTrue((after - before) > 25);
// the backoff numAttempts should have been reset to 0
NUnit.Framework.Assert.IsTrue(changeTracker.backoff.GetNumAttempts() == 0);
changeTracker.Stop();
try
{
bool success = changeTrackerFinishedSignal.Await(300, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
}