public MessageNumberRange(MessageNumber start, int batchSize)
{
if (start == MessageNumber.NotSet)
{
throw new InvalidMessageNumberRangeException("Range cannot start with NotSet value");
}
Start = start;
End = MessageNumber.New(start.Value + batchSize - 1);
}
public async Task TakeAllEvents_ThereIsNoTrackingForLastEventNumberYet()
{
var api = new TestEventApi();
api.SetupTestResource(
resourceName: "resource",
newTestEvents: new List <TestResourceCreatedEvent>
{
new TestResourceCreatedEvent
{
Id = new Guid("0683f052-40f0-4bff-879e-f4bea94c0ed0")
},
new TestResourceCreatedEvent
{
Id = new Guid("C471D99B-2C72-44F6-898F-F0BABCBAC9D7")
},
new TestResourceCreatedEvent
{
Id = new Guid("6843FE44-3029-47D3-A9B9-C21A3BAB4397")
}
});
var eventTrackingRepository = new ListEventTrackingRepository(new List <EventTracking>
{
EventTracking.Preset("resource", MessageNumber.New(1))
});
var eventMonitor = new EventMonitor(api, eventTrackingRepository);
var handler = new OnAnyEventRecordInListEventHandler <TestResourceCreatedEvent>();
eventMonitor.Subscribe <TestResourceCreatedEvent>("resource", handler);
await eventMonitor.Poll();
Assert.Equal(1, handler.Events.Count);
Assert.Equal(new Guid("6843FE44-3029-47D3-A9B9-C21A3BAB4397"), handler.Events[0].Id);
var lastMessageNumber = await eventTrackingRepository.GetLastMessageNumber("resource");
Assert.Equal(2, lastMessageNumber.Value);
}
public async Task <IList <object> > GetEventsAfterAsync(string resourceName, MessageNumber lastMessageNumber)
{
Console.WriteLine($"GetEventsAfterAsync with Last message number: {lastMessageNumber}");
var allEvents = new List <object>();
List <object> retrievedEventsList;
MessageNumberRange numberRange;
if (lastMessageNumber == MessageNumber.NotSet)
{
numberRange = new MessageNumberRange(MessageNumber.New(0), _batchSize);
retrievedEventsList = await GetAsync(resourceName, numberRange);
allEvents.AddRange(retrievedEventsList);
}
else
{
var skippedBatches = lastMessageNumber.Value / _batchSize;
numberRange = new MessageNumberRange(MessageNumber.New(skippedBatches * _batchSize), _batchSize);
retrievedEventsList = await GetAsync(resourceName, numberRange);
var skippedBatchSize = lastMessageNumber.Value % _batchSize;
var eventsListStartingFromLastMessageNumber = retrievedEventsList.Skip(skippedBatchSize + 1).ToList();
allEvents.AddRange(eventsListStartingFromLastMessageNumber);
}
while (retrievedEventsList.Count == _batchSize)
{
numberRange = new MessageNumberRange(MessageNumber.New(numberRange.End.Value + 1), _batchSize);
retrievedEventsList = await GetAsync(resourceName, numberRange);
allEvents.AddRange(retrievedEventsList);
}
return(allEvents);
}
public async Task MultipleCallsUntilAllEventsAreRetrieved_EventsCoverMultipleBatches()
{
var httpClientWrapper =
new FakeEventHttpClientWrapper(
resourceName: "test-message-type",
events: new List <EventInfo>
{
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("7a60d915-a25a-4678-b25e-e35a45a2f0c0")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("9435310E-098B-4598-A378-5862D9A9E9AE")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("73DE4B51-1F0E-4428-8D59-8DFBEA8091BA")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("093626F4-7125-41CD-9982-785B7D52BCAA")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("C911BCDB-F23C-4FA3-BE57-E2C0EC3793DC")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("00DE8FA8-98E7-4E65-8CE0-B3C982BD1B03")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("F2E3B971-28C9-474E-9EFA-231C86A673B4")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("76027085-3B4C-4724-A88C-375E5AB24E7A")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("E34AD640-B4D0-4A31-9A19-7F1B869937C2")
}
}
});
var apiHelper = new EventApi("http://localhost/", httpClientWrapper, TestResourceEventConverter.Instance,
3);
var result = await apiHelper.GetEventsAfterAsync(resourceName : "resource", lastMessageNumber : MessageNumber.New(3));
Assert.Equal(3, httpClientWrapper.MessagesSent.Count);
Assert.Equal("/events/resource/3-5", httpClientWrapper.MessagesSent[0].RequestUri.AbsolutePath);
Assert.Equal("/events/resource/6-8", httpClientWrapper.MessagesSent[1].RequestUri.AbsolutePath);
Assert.Equal("/events/resource/9-11", httpClientWrapper.MessagesSent[2].RequestUri.AbsolutePath);
Assert.Equal(5, result.Count);
Assert.Equal(new Guid("C911BCDB-F23C-4FA3-BE57-E2C0EC3793DC"), ((TestResourceCreatedEvent)result[0]).Id);
Assert.Equal(new Guid("00DE8FA8-98E7-4E65-8CE0-B3C982BD1B03"), ((TestResourceCreatedEvent)result[1]).Id);
Assert.Equal(new Guid("F2E3B971-28C9-474E-9EFA-231C86A673B4"), ((TestResourceCreatedEvent)result[2]).Id);
Assert.Equal(new Guid("76027085-3B4C-4724-A88C-375E5AB24E7A"), ((TestResourceCreatedEvent)result[3]).Id);
Assert.Equal(new Guid("E34AD640-B4D0-4A31-9A19-7F1B869937C2"), ((TestResourceCreatedEvent)result[4]).Id);
}
public async Task CallsSecondBatchOfEvents_LastMessageNumberIsHigherThanOneBatchSize()
{
var httpClientWrapper =
new FakeEventHttpClientWrapper(
resourceName: "test-message-type",
events: new List <EventInfo>
{
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("7a60d915-a25a-4678-b25e-e35a45a2f0c0")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("9435310E-098B-4598-A378-5862D9A9E9AE")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("73DE4B51-1F0E-4428-8D59-8DFBEA8091BA")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("093626F4-7125-41CD-9982-785B7D52BCAA")
}
},
new EventInfo
{
EventType = "resource-created",
Event =
new TestResourceCreatedEvent
{
Id = new Guid("C911BCDB-F23C-4FA3-BE57-E2C0EC3793DC")
}
}
});
var apiHelper = new EventApi("http://localhost/", httpClientWrapper, TestResourceEventConverter.Instance,
3);
var result = await apiHelper.GetEventsAfterAsync(resourceName : "resource", lastMessageNumber : MessageNumber.New(3));
Assert.Equal(1, httpClientWrapper.MessagesSent.Count);
Assert.Equal("/events/resource/3-5", httpClientWrapper.MessagesSent[0].RequestUri.AbsolutePath);
Assert.Equal(1, result.Count);
Assert.Equal(new Guid("C911BCDB-F23C-4FA3-BE57-E2C0EC3793DC"), ((TestResourceCreatedEvent)result[0]).Id);
}