/// <exception cref="System.Exception"></exception>
public virtual void ChangeTrackerTestWithMode(ChangeTracker.ChangeTrackerMode mode
, bool useMockReplicator)
{
CountDownLatch changeTrackerFinishedSignal = new CountDownLatch(1);
CountDownLatch changeReceivedSignal = new CountDownLatch(1);
Uri testURL = GetReplicationURL();
ChangeTrackerClient client = new _ChangeTrackerClient_42(changeTrackerFinishedSignal
, useMockReplicator, changeReceivedSignal);
ChangeTracker changeTracker = new ChangeTracker(testURL, mode, false, 0, client);
changeTracker.SetUsePOST(IsTestingAgainstSyncGateway());
changeTracker.Start();
try
{
bool success = changeReceivedSignal.Await(300, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
changeTracker.Stop();
try
{
bool success = changeTrackerFinishedSignal.Await(300, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
}
public ChangeTracker(Uri databaseURL, ChangeTracker.ChangeTrackerMode mode, bool
includeConflicts, object lastSequenceID, ChangeTrackerClient client)
{
this.databaseURL = databaseURL;
this.mode = mode;
this.includeConflicts = includeConflicts;
this.lastSequenceID = lastSequenceID;
this.client = client;
this.requestHeaders = new Dictionary<string, object>();
}
/// <exception cref="System.Exception"></exception>
public virtual void TestChangeTracker()
{
CountDownLatch changeTrackerFinishedSignal = new CountDownLatch(1);
Uri testURL = GetReplicationURL();
ChangeTrackerClient client = new _ChangeTrackerClient_31(changeTrackerFinishedSignal
);
ChangeTracker changeTracker = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.OneShot, 0, client);
changeTracker.Start();
try
{
bool success = changeTrackerFinishedSignal.Await(300, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
}
public void ChangeTrackerFinished(ChangeTracker tracker)
{
ChangeTrackerCaughtUp(tracker);
}
public void ChangeTrackerStopped(ChangeTracker tracker)
{
Log.V(ChangeTrackerTest.Tag, "changeTrackerStopped");
}
public virtual void TestChangeTrackerWithDocsIds()
{
Uri testURL = GetReplicationURL();
ChangeTracker changeTrackerDocIds = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, 0, null);
IList<string> docIds = new AList<string>();
docIds.AddItem("doc1");
docIds.AddItem("doc2");
changeTrackerDocIds.SetDocIDs(docIds);
string docIdsEncoded = URLEncoder.Encode("[\"doc1\",\"doc2\"]");
string expectedFeedPath = string.Format("_changes?feed=longpoll&limit=50&heartbeat=300000&since=0&filter=_doc_ids&doc_ids=%s"
, docIdsEncoded);
string changesFeedPath = changeTrackerDocIds.GetChangesFeedPath();
NUnit.Framework.Assert.AreEqual(expectedFeedPath, changesFeedPath);
}
public void ChangeTrackerStopped(ChangeTracker tracker)
{
if (StoppedDelegate != null)
{
StoppedDelegate(tracker);
}
if (stoppedSignal != null)
{
stoppedSignal.CountDown();
}
}
public void TestChangeTrackerWithFilterURL()
{
var testUrl = GetReplicationURL();
var changeTracker = new ChangeTracker(testUrl, ChangeTrackerMode.LongPoll, 0, false, null);
// set filter
changeTracker.SetFilterName("filter");
// build filter map
var filterMap = new Dictionary<string, object>();
filterMap["param"] = "value";
// set filter map
changeTracker.SetFilterParams(filterMap);
Assert.AreEqual("_changes?feed=longpoll&limit=50&heartbeat=300000&since=0&filter=filter¶m=value",
changeTracker.GetChangesFeedPath());
}
private void RunChangeTrackerTransientError(
ChangeTrackerMode mode,
Int32 errorCode,
string statusMessage,
Int32 numExpectedChangeCallbacks)
{
var changeTrackerFinishedSignal = new CountDownLatch(1);
var changeReceivedSignal = new CountDownLatch(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 changeTracker = new ChangeTracker(testUrl, mode, 0, false, client, new TaskFactory(scheduler));
changeTracker.UsePost = IsSyncGateway(testUrl);
changeTracker.Start();
var success = changeReceivedSignal.Await(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
changeTracker.Stop();
success = changeTrackerFinishedSignal.Await(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
}
public void ChangeTrackerStopped(ChangeTracker tracker)
{
changeTrackerFinishedSignal.CountDown();
}
public _BackgroundTask_311(ChangeTracker changeTracker)
{
this.changeTracker = changeTracker;
}
public void ChangeTrackerStopped(ChangeTracker tracker)
{
Log.V(ChangeTrackerTest.Tag, "changeTrackerStopped");
}
public void TestChangeTrackerWithDocsIds()
{
var testURL = GetReplicationURL();
var changeTracker = new ChangeTracker(testURL, ChangeTrackerMode
.LongPoll, 0, false, null);
var docIds = new List<string>();
docIds.Add("doc1");
docIds.Add("doc2");
changeTracker.SetDocIDs(docIds);
var docIdsJson = "[\"doc1\",\"doc2\"]";
var parameters = changeTracker.GetChangesFeedParams();
Assert.AreEqual("_doc_ids", parameters["filter"]);
AssertEnumerablesAreEqual(docIds, (IEnumerable)parameters["doc_ids"]);
var body = changeTracker.GetChangesFeedPostBody();
Assert.IsTrue(body.Contains(docIdsJson));
}
/// <exception cref="System.Exception"></exception>
private void RunChangeTrackerTransientError(ChangeTracker.ChangeTrackerMode mode,
int errorCode, string statusMessage, int numExpectedChangeCallbacks)
{
CountDownLatch changeTrackerFinishedSignal = new CountDownLatch(1);
CountDownLatch changeReceivedSignal = new CountDownLatch(numExpectedChangeCallbacks
);
Uri testURL = GetReplicationURL();
ChangeTrackerClient client = new _ChangeTrackerClient_197(changeTrackerFinishedSignal
, changeReceivedSignal, errorCode, statusMessage);
ChangeTracker changeTracker = new ChangeTracker(testURL, mode, false, 0, client);
changeTracker.SetUsePOST(IsTestingAgainstSyncGateway());
changeTracker.Start();
try
{
bool success = changeReceivedSignal.Await(30, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
changeTracker.Stop();
try
{
bool success = changeTrackerFinishedSignal.Await(30, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
}
public virtual void TestChangeTrackerWithDocsIds()
{
Uri testURL = GetReplicationURL();
ChangeTracker changeTrackerDocIds = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, false, 0, null);
IList<string> docIds = new AList<string>();
docIds.AddItem("doc1");
docIds.AddItem("doc2");
changeTrackerDocIds.SetDocIDs(docIds);
string docIdsUnencoded = "[\"doc1\",\"doc2\"]";
string docIdsEncoded = URLEncoder.Encode(docIdsUnencoded);
string expectedFeedPath = string.Format("_changes?feed=longpoll&limit=50&heartbeat=300000&since=0&filter=_doc_ids&doc_ids=%s"
, docIdsEncoded);
string changesFeedPath = changeTrackerDocIds.GetChangesFeedPath();
NUnit.Framework.Assert.AreEqual(expectedFeedPath, changesFeedPath);
changeTrackerDocIds.SetUsePOST(true);
IDictionary<string, object> postBodyMap = changeTrackerDocIds.ChangesFeedPOSTBodyMap
();
NUnit.Framework.Assert.AreEqual("_doc_ids", postBodyMap.Get("filter"));
NUnit.Framework.Assert.AreEqual(docIds, postBodyMap.Get("doc_ids"));
string postBody = changeTrackerDocIds.ChangesFeedPOSTBody();
NUnit.Framework.Assert.IsTrue(postBody.Contains(docIdsUnencoded));
}
private void TestChangeTrackerBackoff(MockHttpClientFactory httpClientFactory)
{
var changeTrackerFinishedSignal = new CountDownLatch(1);
var client = new ChangeTrackerTestClient(changeTrackerFinishedSignal, null);
client.HttpClientFactory = httpClientFactory;
var testUrl = GetReplicationURL();
var scheduler = new SingleTaskThreadpoolScheduler();
var changeTracker = new ChangeTracker(testUrl, ChangeTrackerMode.LongPoll, 0, false, client, new TaskFactory(scheduler));
changeTracker.UsePost = IsSyncGateway(testUrl);
changeTracker.Start();
// sleep for a few seconds
Thread.Sleep(15 * 1000);
// make sure we got less than 10 requests in those 10 seconds (if it was hammering, we'd get a lot more)
var handler = client.HttpRequestHandler;
Assert.IsTrue(handler.CapturedRequests.Count < 25);
Assert.IsTrue(changeTracker.backoff.NumAttempts > 0, "Observed attempts: {0}".Fmt(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
Thread.Sleep(3 * 1000);
// now find the delta in requests received in a 2s period
int before = handler.CapturedRequests.Count;
Thread.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.IsTrue((after - before) > 25);
// the backoff numAttempts should have been reset to 0
Assert.IsTrue(changeTracker.backoff.NumAttempts == 0);
changeTracker.Stop();
var success = changeTrackerFinishedSignal.Await(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
}
public ChangeTracker(Uri databaseURL, ChangeTracker.ChangeTrackerMode mode, bool
includeConflicts, object lastSequenceID, ChangeTrackerClient client)
{
// does not work, do not use it.
this.databaseURL = databaseURL;
this.mode = mode;
this.includeConflicts = includeConflicts;
this.lastSequenceID = lastSequenceID;
this.client = client;
this.requestHeaders = new Dictionary<string, object>();
this.heartBeatSeconds = 300;
this.limit = 50;
}
public void TestChangeTrackerWithConflictsIncluded()
{
Uri testUrl = GetReplicationURL();
var changeTracker = new ChangeTracker(testUrl, ChangeTrackerMode.LongPoll, 0, true, null);
Assert.AreEqual("_changes?feed=longpoll&limit=50&heartbeat=300000&style=all_docs&since=0", changeTracker.GetChangesFeedPath());
}
/// <exception cref="System.Exception"></exception>
public virtual void ChangeTrackerTestWithMode(ChangeTracker.ChangeTrackerMode mode
)
{
CountDownLatch changeTrackerFinishedSignal = new CountDownLatch(1);
CountDownLatch changeReceivedSignal = new CountDownLatch(1);
Uri testURL = GetReplicationURL();
IChangeTrackerClient client = new _ChangeTrackerClient_119(changeTrackerFinishedSignal
, changeReceivedSignal);
ChangeTracker changeTracker = new ChangeTracker(testURL, mode, 0, client);
changeTracker.Start();
try
{
bool success = changeReceivedSignal.Await(300, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
changeTracker.Stop();
try
{
bool success = changeTrackerFinishedSignal.Await(300, TimeUnit.Seconds);
NUnit.Framework.Assert.IsTrue(success);
}
catch (Exception e)
{
Sharpen.Runtime.PrintStackTrace(e);
}
}
public void TestChangeTrackerWithDocsIds()
{
var testURL = GetReplicationURL();
var changeTracker = new ChangeTracker(testURL, ChangeTrackerMode
.LongPoll, 0, false, null);
var docIds = new List<string>();
docIds.AddItem("doc1");
docIds.AddItem("doc2");
changeTracker.SetDocIDs(docIds);
var docIdsJson = "[\"doc1\",\"doc2\"]";
var docIdsEncoded = Uri.EscapeUriString(docIdsJson);
var expectedFeedPath = string.Format("_changes?feed=longpoll&limit=50&heartbeat=300000&since=0&filter=_doc_ids&doc_ids={0}",
docIdsEncoded);
string changesFeedPath = changeTracker.GetChangesFeedPath();
Assert.AreEqual(expectedFeedPath, changesFeedPath);
changeTracker.UsePost = true;
var parameters = changeTracker.GetChangesFeedParams();
Assert.AreEqual("_doc_ids", parameters["filter"]);
AssertEnumerablesAreEqual(docIds, (IEnumerable)parameters["doc_ids"]);
var body = changeTracker.GetChangesFeedPostBody();
Assert.IsTrue(body.Contains(docIdsJson));
}
public virtual void TestChangeTrackerWithConflictsIncluded()
{
Uri testURL = GetReplicationURL();
ChangeTracker changeTracker = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, true, 0, null);
NUnit.Framework.Assert.AreEqual("_changes?feed=longpoll&limit=50&heartbeat=300000&style=all_docs&since=0"
, changeTracker.GetChangesFeedPath());
}
/// <exception cref="System.Exception"></exception>
public virtual void TestChangeTrackerWithFilterURL()
{
Uri testURL = GetReplicationURL();
ChangeTracker changeTracker = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, 0, null);
// set filter
changeTracker.SetFilterName("filter");
// build filter map
IDictionary<string, object> filterMap = new Dictionary<string, object>();
filterMap.Put("param", "value");
// set filter map
changeTracker.SetFilterParams(filterMap);
NUnit.Framework.Assert.AreEqual("_changes?feed=longpoll&limit=50&heartbeat=300000&since=0&filter=filter¶m=value"
, changeTracker.GetChangesFeedPath());
}
/// <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>
public virtual void TestChangeTrackerInvalidJson()
{
Uri testURL = GetReplicationURL();
CustomizableMockHttpClient mockHttpClient = new CustomizableMockHttpClient();
mockHttpClient.AddResponderThrowExceptionAllRequests();
ChangeTrackerClient client = new _ChangeTrackerClient_290(mockHttpClient);
ChangeTracker changeTracker = new ChangeTracker(testURL, ChangeTracker.ChangeTrackerMode
.LongPoll, 0, client);
BackgroundTask task = new _BackgroundTask_311(changeTracker);
task.Execute();
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();
}
}
public void ChangeTrackerStopped(ChangeTracker tracker)
{
Log.V(ChangeTrackerTest.Tag, "changeTrackerStopped");
changeTrackerFinishedSignal.CountDown();
}
public _BackgroundTask_311(ChangeTracker changeTracker)
{
this.changeTracker = changeTracker;
}
public void ChangeTrackerStopped(ChangeTracker tracker, ErrorResolution resolution)
{
WorkExecutor.StartNew(() => ProcessChangeTrackerStopped(tracker, resolution));
}
public void ChangeTrackerStopped(ChangeTracker tracker)
{
changeTrackerFinishedSignal.CountDown();
}
private void ChangeTrackerTestWithMode(ChangeTrackerMode mode)
{
var changeTrackerFinishedSignal = new CountDownLatch(1);
var changeReceivedSignal = new CountDownLatch(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(HttpStatusCode.OK, null, json);
});
var testUrl = GetReplicationURL();
var scheduler = new SingleTaskThreadpoolScheduler();
var changeTracker = new ChangeTracker(testUrl, mode, 0, false, client, new TaskFactory(scheduler));
changeTracker.UsePost = IsSyncGateway(testUrl);
changeTracker.Start();
var success = changeReceivedSignal.Await(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
changeTracker.Stop();
success = changeTrackerFinishedSignal.Await(TimeSpan.FromSeconds(30));
Assert.IsTrue(success);
}
public void ChangeTrackerStopped(ChangeTracker tracker)
{
WorkExecutor.StartNew(() => ProcessChangeTrackerStopped(tracker));
}
public ChangeTracker(Uri databaseURL, ChangeTracker.ChangeTrackerMode mode, object lastSequenceID,
Boolean includeConflicts, IChangeTrackerClient client)
{
this.databaseURL = databaseURL;
this.mode = mode;
this.includeConflicts = includeConflicts;
this.lastSequenceID = lastSequenceID;
this.client = client;
this.RequestHeaders = new Dictionary<string, object>();
this.tokenSource = new CancellationTokenSource();
}