/// <exception cref="System.Exception"></exception>
public virtual void TestChangeTrackerInvalidJson()
{
Uri testURL = GetReplicationURL();
CustomizableMockHttpClient mockHttpClient = new CustomizableMockHttpClient();
mockHttpClient.AddResponderThrowExceptionAllRequests();
IChangeTrackerClient client = new _ChangeTrackerClient_290(mockHttpClient);
ChangeTracker changeTracker = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, 0, client);
var task = Task.Factory.StartNew(() =>
{
changeTracker.Start();
});
task.Start();
try
{
// expected behavior:
// when:
// mockHttpClient throws IOExceptions -> it should start high and then back off and numTimesExecute should be low
for (int i = 0; i < 30; i++)
{
int numTimesExectutedAfter10seconds = 0;
try
{
Sharpen.Thread.Sleep(1000);
// take a snapshot of num times the http client was called after 10 seconds
if (i == 10)
{
numTimesExectutedAfter10seconds = mockHttpClient.GetCapturedRequests().Count;
}
// take another snapshot after 20 seconds have passed
if (i == 20)
{
// by now it should have backed off, so the delta between 10s and 20s should be small
int delta = mockHttpClient.GetCapturedRequests().Count - numTimesExectutedAfter10seconds;
NUnit.Framework.Assert.IsTrue(delta < 25);
}
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
}
}
finally
{
changeTracker.Stop();
}
}
/// <exception cref="System.Exception"></exception>
public virtual void TestHeaders()
{
CustomizableMockHttpClient mockHttpClient = new CustomizableMockHttpClient();
mockHttpClient.AddResponderThrowExceptionAllRequests();
HttpClientFactory mockHttpClientFactory = new _HttpClientFactory_741(mockHttpClient
);
Uri remote = GetReplicationURL();
manager.SetDefaultHttpClientFactory(mockHttpClientFactory);
Replication puller = database.CreatePullReplication(remote);
IDictionary <string, object> headers = new Dictionary <string, object>();
headers.Put("foo", "bar");
puller.SetHeaders(headers);
puller.Start();
Sharpen.Thread.Sleep(2000);
puller.Stop();
bool foundFooHeader = false;
IList <HttpWebRequest> requests = mockHttpClient.GetCapturedRequests();
foreach (HttpWebRequest request in requests)
{
Header[] requestHeaders = request.GetHeaders("foo");
foreach (Header requestHeader in requestHeaders)
{
foundFooHeader = true;
NUnit.Framework.Assert.AreEqual("bar", requestHeader.GetValue());
}
}
NUnit.Framework.Assert.IsTrue(foundFooHeader);
manager.SetDefaultHttpClientFactory(null);
}
/// <exception cref="System.Exception"></exception>
private void TestChangeTrackerBackoff(CustomizableMockHttpClient mockHttpClient)
{
Uri testURL = GetReplicationURL();
CountDownLatch changeTrackerFinishedSignal = new CountDownLatch(1);
ChangeTrackerClient client = new _ChangeTrackerClient_263(changeTrackerFinishedSignal
, mockHttpClient);
ChangeTracker changeTracker = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, false, 0, client);
changeTracker.SetUsePOST(IsTestingAgainstSyncGateway());
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);
}
}
