public void TestChangeTrackerWithDocsIds()
{
var testURL = GetReplicationURL();
var remoteSession = new RemoteSession(new RemoteSessionContructorOptions {
BaseUrl = testURL
});
remoteSession.SetupHttpClientFactory(null, database, "docids");
remoteSession.Setup(new ReplicationOptions());
var changeTracker = ChangeTrackerFactory.Create(new ChangeTrackerOptions {
DatabaseUri = testURL,
Mode = ChangeTrackerMode.LongPoll,
IncludeConflicts = false,
Client = new ChangeTrackerTestClient(null, null),
RetryStrategy = new ExponentialBackoffStrategy(2),
RemoteSession = remoteSession
});
var docIds = new List <string>();
docIds.Add("doc1");
docIds.Add("doc2");
changeTracker.DocIDs = docIds;
var parameters = changeTracker.GetChangesFeedParams();
Assert.AreEqual("_doc_ids", parameters["filter"]);
AssertEnumerablesAreEqual(docIds, (IEnumerable)parameters["doc_ids"]);
}
public void TestWebSocketChangeTrackerFallback()
{
if (!Boolean.Parse((string)GetProperty("replicationTestsEnabled")))
{
Assert.Inconclusive("Replication tests disabled.");
return;
}
var signal = new CountdownEvent(1);
var client = new ChangeTrackerTestClient(signal, null);
using (var remoteDb = _sg.CreateDatabase("web_socket_scratch")) {
var remoteSession = new RemoteSession(new RemoteSessionContructorOptions {
BaseUrl = remoteDb.RemoteUri
});
remoteSession.SetupHttpClientFactory(null, database, "live");
remoteSession.Setup(new ReplicationOptions());
var tracker = new BadWebSocketChangeTracker(new ChangeTrackerOptions {
DatabaseUri = remoteDb.RemoteUri,
IncludeConflicts = false,
Client = client,
RetryStrategy = new ExponentialBackoffStrategy(2),
RemoteSession = remoteSession
});
tracker.Start();
Assert.IsTrue(signal.Wait(TimeSpan.FromSeconds(20)));
Assert.IsFalse(tracker.CanConnect);
}
}
public void TestChangeTrackerGiveUp()
{
var factory = new MockHttpClientFactory();
var httpHandler = (MockHttpRequestHandler)factory.HttpHandler;
httpHandler.AddResponderThrowExceptionAllRequests();
var changeTrackerFinishedSignal = new CountdownEvent(1);
var client = new ChangeTrackerTestClient(changeTrackerFinishedSignal, null);
client.HttpClientFactory = factory;
var testUrl = GetReplicationURL();
var scheduler = new SingleTaskThreadpoolScheduler();
var remoteSession = new RemoteSession(new RemoteSessionContructorOptions {
BaseUrl = testUrl,
WorkExecutor = new TaskFactory(scheduler)
});
remoteSession.SetupHttpClientFactory(client.HttpClientFactory, database, "giveup");
remoteSession.Setup(new ReplicationOptions());
var changeTracker = ChangeTrackerFactory.Create(new ChangeTrackerOptions {
DatabaseUri = testUrl,
Mode = ChangeTrackerMode.OneShot,
IncludeConflicts = true,
Client = client,
RetryStrategy = new ExponentialBackoffStrategy(2),
WorkExecutor = new TaskFactory(scheduler),
RemoteSession = remoteSession
});
changeTracker.Start();
Assert.IsTrue(changeTrackerFinishedSignal.Wait(TimeSpan.FromSeconds(30)));
}
private void ChangeTrackerTestWithMode(ChangeTrackerMode mode)
{
var changeTrackerFinishedSignal = new CountdownEvent(1);
var changeReceivedSignal = new CountdownEvent(1);
var client = new ChangeTrackerTestClient(changeTrackerFinishedSignal, changeReceivedSignal);
client.ReceivedChangeDelegate = (IDictionary <string, object> change) =>
{
Assert.IsTrue(change.ContainsKey("seq"));
Assert.AreEqual("1", change["seq"]);
};
var handler = client.HttpRequestHandler;
handler.SetResponder("_changes", (request) =>
{
var json = "{\"results\":[\n" +
"{\"seq\":\"1\",\"id\":\"doc1-138\",\"changes\":[{\"rev\":\"1-82d\"}]}],\n" +
"\"last_seq\":\"*:50\"}";
return(MockHttpRequestHandler.GenerateHttpResponseMessage(System.Net.HttpStatusCode.OK, null, json));
});
var testUrl = GetReplicationURL();
var scheduler = new SingleTaskThreadpoolScheduler();
var remoteSession = new RemoteSession(new RemoteSessionContructorOptions {
WorkExecutor = new TaskFactory(scheduler),
BaseUrl = testUrl
});
remoteSession.SetupHttpClientFactory(client.HttpClientFactory, database, "testwithmode");
remoteSession.Setup(new ReplicationOptions());
var changeTracker = ChangeTrackerFactory.Create(new ChangeTrackerOptions {
DatabaseUri = testUrl,
Mode = mode,
IncludeConflicts = false,
Client = client,
RetryStrategy = new ExponentialBackoffStrategy(2),
WorkExecutor = new TaskFactory(scheduler),
RemoteSession = remoteSession
});
changeTracker.ActiveOnly = true;
changeTracker.Start();
var success = changeReceivedSignal.Wait(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
changeTracker.Stop();
success = changeTrackerFinishedSignal.Wait(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
}
public void TestLiveChangeTrackerLongPoll()
{
TestLiveChangeTracker((uri, client) =>
{
var remoteSession = new RemoteSession(new RemoteSessionContructorOptions {
BaseUrl = uri
});
remoteSession.SetupHttpClientFactory(null, database, "live");
remoteSession.Setup(new ReplicationOptions());
var tracker = ChangeTrackerFactory.Create(new ChangeTrackerOptions {
DatabaseUri = uri,
Mode = ChangeTrackerMode.OneShot,
IncludeConflicts = false,
Client = client,
RetryStrategy = new ExponentialBackoffStrategy(2),
RemoteSession = remoteSession
});
tracker.Continuous = true;
return(tracker);
}, true);
}
public void TestLiveChangeTrackerOneShot(bool continuous)
{
TestLiveChangeTracker((uri, client) =>
{
var remoteSession = new RemoteSession(new RemoteSessionContructorOptions {
BaseUrl = uri
});
remoteSession.SetupHttpClientFactory(null, database);
remoteSession.Setup(new ReplicationOptions());
var tracker = ChangeTrackerFactory.Create(new ChangeTrackerOptions {
DatabaseUri = uri,
Mode = ChangeTrackerMode.OneShot,
IncludeConflicts = false,
Client = client,
RetryStrategy = new ExponentialBackoffStrategy(2),
RemoteSession = remoteSession
});
tracker.Continuous = continuous;
tracker.PollInterval = TimeSpan.FromSeconds(5);
return(tracker);
}, continuous);
}
private void RunChangeTrackerTransientError(
ChangeTrackerMode mode,
Int32 errorCode,
string statusMessage,
Int32 numExpectedChangeCallbacks)
{
var changeTrackerFinishedSignal = new CountdownEvent(1);
var changeReceivedSignal = new CountdownEvent(numExpectedChangeCallbacks);
var client = new ChangeTrackerTestClient(changeTrackerFinishedSignal, changeReceivedSignal);
MockHttpRequestHandler.HttpResponseDelegate sentinal = RunChangeTrackerTransientErrorDefaultResponder();
var responders = new List <MockHttpRequestHandler.HttpResponseDelegate>();
responders.Add(RunChangeTrackerTransientErrorDefaultResponder());
responders.Add(MockHttpRequestHandler.TransientErrorResponder(errorCode, statusMessage));
MockHttpRequestHandler.HttpResponseDelegate chainResponder = (request) =>
{
if (responders.Count > 0)
{
var responder = responders[0];
responders.RemoveAt(0);
return(responder(request));
}
return(sentinal(request));
};
var handler = client.HttpRequestHandler;
handler.SetResponder("_changes", chainResponder);
var testUrl = GetReplicationURL();
var scheduler = new SingleTaskThreadpoolScheduler();
var remoteSession = new RemoteSession(new RemoteSessionContructorOptions {
WorkExecutor = new TaskFactory(scheduler),
BaseUrl = testUrl
});
remoteSession.SetupHttpClientFactory(client.HttpClientFactory, database, "bar");
remoteSession.Setup(new ReplicationOptions());
var changeTracker = ChangeTrackerFactory.Create(new ChangeTrackerOptions {
DatabaseUri = testUrl,
Mode = mode,
IncludeConflicts = false,
Client = client,
RetryStrategy = new ExponentialBackoffStrategy(2),
WorkExecutor = new TaskFactory(scheduler),
RemoteSession = remoteSession
});
changeTracker.Start();
var success = changeReceivedSignal.Wait(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
changeTracker.Stop();
success = changeTrackerFinishedSignal.Wait(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
}
private void TestChangeTrackerBackoff(MockHttpClientFactory httpClientFactory)
{
var changeTrackerFinishedSignal = new CountdownEvent(1);
var client = new ChangeTrackerTestClient(changeTrackerFinishedSignal, null);
client.HttpClientFactory = httpClientFactory;
var testUrl = GetReplicationURL();
var scheduler = new SingleTaskThreadpoolScheduler();
var opts = new RemoteSessionContructorOptions {
BaseUrl = testUrl,
WorkExecutor = new TaskFactory(scheduler)
};
var remoteSession = new RemoteSession(opts);
remoteSession.SetupHttpClientFactory(client.HttpClientFactory, database, "foo");
remoteSession.Setup(new ReplicationOptions());
var changeTracker = ChangeTrackerFactory.Create(new ChangeTrackerOptions {
DatabaseUri = testUrl,
Mode = ChangeTrackerMode.LongPoll,
IncludeConflicts = true,
Client = client,
RetryStrategy = new ExponentialBackoffStrategy(2),
WorkExecutor = new TaskFactory(scheduler),
RemoteSession = remoteSession
});
changeTracker.Continuous = true;
changeTracker.Start();
// sleep for a few seconds
Sleep(8 * 1000);
// make sure we got less than 10 requests in those 8 seconds (if it was hammering, we'd get a lot more)
var handler = client.HttpRequestHandler;
Assert.Less(handler.CapturedRequests.Count, 10);
Assert.Greater(changeTracker.Backoff.NumAttempts, 0, String.Format("Observed attempts: {0}", changeTracker.Backoff.NumAttempts));
handler.ClearResponders();
handler.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
Sleep(10 * 1000);
// now find the delta in requests received in a 2s period
int before = handler.CapturedRequests.Count;
Sleep(2 * 1000);
int after = handler.CapturedRequests.Count;
// assert that the delta is high, because at this point the change tracker should
// be hammering away
Assert.Greater((after - before), 25);
// the backoff numAttempts should have been reset to 0
Assert.IsTrue(changeTracker.Backoff.NumAttempts == 0);
changeTracker.Stop();
var success = changeTrackerFinishedSignal.Wait(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
}
