//--- Methods ---
protected override Yield Start(XDoc config, Result result)
{
yield return(Coroutine.Invoke(base.Start, config, new Result()));
_varnish = Plug.New(Config["uri.varnish"].AsUri);
_deki = Plug.New(Config["uri.deki"].AsUri);
_apikey = Config["apikey"].AsText;
_delayPurgeTimespan = TimeSpan.FromSeconds(config["varnish-purge-delay"].AsInt ?? 10);
var dispatcher = new UpdateRecordDispatcher(OnQueueExpire);
_updateDelayQueue = new UpdateDelayQueue(_delayPurgeTimespan, dispatcher);
// set up subscription for pubsub
XDoc subscriptionSet = new XDoc("subscription-set")
.Elem("uri.owner", Self.Uri)
.Start("subscription")
.Add(DreamCookie.NewSetCookie("service-key", InternalAccessKey, Self.Uri).AsSetCookieDocument)
.Elem("channel", "event://*/deki/pages/create")
.Elem("channel", "event://*/deki/pages/move")
.Elem("channel", "event://*/deki/pages/update")
.Elem("channel", "event://*/deki/pages/delete")
.Elem("channel", "event://*/deki/pages/revert")
.Elem("channel", "event://*/deki/pages/createalias")
.Elem("channel", "event://*/deki/pages/tags/update")
.Elem("channel", "event://*/deki/pages/dependentschanged/comments/create")
.Elem("channel", "event://*/deki/pages/dependentschanged/comments/update")
.Elem("channel", "event://*/deki/pages/dependentschanged/comments/delete")
.Elem("channel", "event://*/deki/pages/dependentschanged/files/create")
.Elem("channel", "event://*/deki/pages/dependentschanged/files/update")
.Elem("channel", "event://*/deki/pages/dependentschanged/files/delete")
.Elem("channel", "event://*/deki/pages/dependentschanged/files/move")
.Elem("channel", "event://*/deki/pages/dependentschanged/files/restore")
.Elem("channel", "event://*/deki/files/create")
.Elem("channel", "event://*/deki/files/update")
.Elem("channel", "event://*/deki/files/delete")
.Elem("channel", "event://*/deki/files/move")
.Elem("channel", "event://*/deki/files/restore")
.Start("recipient")
.Attr("authtoken", _apikey)
.Elem("uri", Self.Uri.At("queue"))
.End()
.End();
Result <DreamMessage> subscriptionResult;
yield return(subscriptionResult = PubSub.At("subscribers").PostAsync(subscriptionSet));
string accessKey = subscriptionResult.Value.ToDocument()["access-key"].AsText;
XUri location = subscriptionResult.Value.Headers.Location;
Cookies.Update(DreamCookie.NewSetCookie("access-key", accessKey, location), null);
_subscriptionLocation = location.AsLocalUri().WithoutQuery();
_log.DebugFormat("subscribed VarnishPurgeService for events at {0}", _subscriptionLocation);
result.Return();
}
public void Failed_tasks_sleeps_and_retries()
{
var handler = new DispatchHandler();
var dispatcher = new UpdateRecordDispatcher(handler.Dispatch, 1, 1, 2.Seconds());
var firstAttempt = handler.AddCallback((d, r) => r.Throw(new Exception()), new Result <UpdateRecord>(5.Seconds()));
var secondAttempt = handler.AddCallback((d, r) => { }, new Result <UpdateRecord>(5.Seconds()));
dispatcher.Dispatch(new UpdateRecord(new XUri("mock://foo"), new XDoc("meta"), "default"), new Result());
Assert.IsFalse(firstAttempt.Block().HasException, "first attempt wasn't called");
var stopwatch = Stopwatch.StartNew();
Assert.IsFalse(secondAttempt.Block().HasException, "second attempt wasn't called");
stopwatch.Stop();
Assert.GreaterOrEqual(stopwatch.Elapsed, 2.Seconds(), string.Format("expected at least 2 second delay, took {0:0.00}s", stopwatch.Elapsed.TotalSeconds));
}
public void Dispatcher_retries_specified_times()
{
var handler = new DispatchHandler();
var dispatcher = new UpdateRecordDispatcher(handler.Dispatch, 1, 2, 0.Seconds());
var firstAttempt = handler.AddCallback((d, r) => r.Throw(new Exception()), new Result <UpdateRecord>(2.Seconds()));
var secondAttempt = handler.AddCallback((d, r) => r.Throw(new Exception()), new Result <UpdateRecord>(2.Seconds()));
var thirddAttempt = handler.AddCallback((d, r) => r.Throw(new Exception()), new Result <UpdateRecord>(2.Seconds()));
var fourthAttempt = handler.AddCallback((d, r) => r.Throw(new Exception()), new Result <UpdateRecord>(5.Seconds()));
dispatcher.Dispatch(new UpdateRecord(new XUri("mock://foo"), new XDoc("meta"), "default"), new Result());
Assert.IsFalse(firstAttempt.Block().HasException, "first attempt wasn't called");
Assert.IsFalse(secondAttempt.Block().HasException, "second attempt wasn't called");
Assert.IsFalse(thirddAttempt.Block().HasException, "third attempt wasn't called");
Assert.IsTrue(fourthAttempt.Block().HasException, "fourth attempt shouldn't have happened");
}
public void Failed_task_sleep_does_not_block_next_task()
{
var handler = new DispatchHandler();
var dispatcher = new UpdateRecordDispatcher(handler.Dispatch, 1, 1, 2.Seconds());
var r1 = new UpdateRecord(new XUri("mock://foo"), new XDoc("meta"), "default");
var r2 = new UpdateRecord(new XUri("mock://foo"), new XDoc("meta"), "default");
var r1firstAttempt = handler.AddCallback((d, r) => r.Throw(new Exception()), new Result <UpdateRecord>(1.Seconds()));
var r2firstAttempt = handler.AddCallback((d, r) => { }, new Result <UpdateRecord>(1.Seconds()));
var r1SecondAttempt = handler.AddCallback((d, r) => { }, new Result <UpdateRecord>(5.Seconds()));
dispatcher.Dispatch(r1, new Result());
dispatcher.Dispatch(r2, new Result());
Assert.IsFalse(r1firstAttempt.Block().HasException, "r1 first attempt wasn't called");
Assert.IsFalse(r1firstAttempt.Block().HasException, "r2 first attempt wasn't called");
Assert.IsFalse(r1SecondAttempt.Block().HasException, "r2 second attempt wasn't called");
}