public void Append(T entity, DomainEvent <TId> @event)
{
using (var stream = eventStore.CreateStream(@event.AggregateId.ToString()))
{
stream.Add(new EventMessage {
Body = @event
});
stream.CommitChanges(@event.EventId);
}
this.projectionDb.Add(entity);
}
private void CreateItem(string itemId, string sku)
{
using (var stream = _store.CreateStream(_inventoryBucket, itemId))
{
stream.Add(new EventMessage()
{
Headers = new Dictionary <string, object>()
{
{ "secret", "value" }
},
Body = new ItemCreatedEvent()
{
Id = itemId
}
});
stream.Add(new EventMessage()
{
Body = new ItemSKUChanged()
{
SKU = sku
}
});
FillDiagnosticHeaders(stream.UncommittedHeaders);
stream.CommitChanges(commitId: Guid.NewGuid());
}
}
private IEventStream PrepareStream(string bucketId, IAggregate aggregate, Dictionary <string, object> headers)
{
IEventStream stream;
var streamId = bucketId + "+" + aggregate.Id;
if (!_streams.TryGetValue(streamId, out stream))
{
_streams[streamId] = stream = _eventStore.CreateStream(bucketId, aggregate.Id);
}
foreach (var item in headers)
{
stream.UncommittedHeaders[item.Key] = item.Value;
}
aggregate.GetUncommittedEvents()
.Cast <object>()
.Where(x => x != null) // Don't persist any null events.
.Select(x => new EventMessage {
Body = x
})
.ToList()
.ForEach(stream.Add);
return(stream);
}
protected override void AggregateRootEventAppliedHandler(AggregateRoot aggregateRoot, UncommittedEvent evnt)
{
var message = new EventMessage
{
Body = new StoredEvent
{
Body = evnt.Payload,
CommitId = _commitId,
EventId = evnt.EventIdentifier,
MajorVersion = evnt.EventVersion.Major,
MinorVersion = evnt.EventVersion.Minor,
Sequence = evnt.EventSequence,
TimeStamp = evnt.EventTimeStamp
}
};
IEventStream stream;
var id = aggregateRoot.EventSourceId;
if (!_trackedStreams.TryGetValue(id, out stream))
{
stream = _eventStore.CreateStream(id);
_trackedStreams[id] = stream;
}
stream.Add(message);
_eventStream.Append(evnt);
_dirtyInstances.Add(aggregateRoot);
}
IEventStream OpenStream(string sagaId)
{
IEventStream stream;
if (_streams.TryGetValue(sagaId, out stream))
{
return(stream);
}
try
{
stream = _eventStore.OpenStream(sagaId, 0, int.MaxValue);
}
catch (StreamNotFoundException)
{
stream = _eventStore.CreateStream(sagaId);
}
return(_streams[sagaId] = stream);
}
protected void CreateStreamAndAppendEvents(Guid streamId, List <T> events)
{
using (var stream = Store.CreateStream(streamId))
{
events.ForEach(@event => stream.Add(new EventMessage {
Body = @event
}));
stream.CommitChanges(Guid.NewGuid());
}
}
private IEventStream OpenStream(string bucketId, string sagaId)
{
IEventStream stream;
var sagaKey = bucketId + "+" + sagaId;
if (_streams.TryGetValue(sagaKey, out stream))
{
return(stream);
}
try
{
stream = _eventStore.OpenStream(bucketId, sagaId, 0, int.MaxValue);
}
catch (StreamNotFoundException)
{
stream = _eventStore.CreateStream(bucketId, sagaId);
}
return(_streams[sagaKey] = stream);
}
private Task PopulateMaster()
{
IEventStream stream = _master.CreateStream("tweets");
IEnumerable <Task> tasks = ReadTweets().Select(tweet =>
{
var message = new TweetMessage(tweet);
stream.Add(new EventMessage {
Body = message
});
return(stream.CommitChanges(Guid.NewGuid()));
});
return(Task.WhenAll(tasks));
}
public async Task When_new_commit_then_should_dispatch()
{
using (IStoreEvents eventStore = Wireup.Init().UsingInMemoryPersistence().Build())
{
var dispatchedEvents = new List <EventMessage <TestEvent> >();
var handlerModule = new TestHandlerModule(dispatchedEvents);
using (var host = new DurableCommitDispatcher(
new EventStoreClient(eventStore.Advanced),
new InMemoryCheckpointRepository(),
new HandlerResolver(handlerModule)))
{
var projectedCommits = host
.ProjectedCommits
.Replay();
using (projectedCommits.Connect())
{
await host.Start();
var streamId = Guid.NewGuid().ToString().FormatStreamIdWithBucket();
Guid commitId = Guid.NewGuid();
Task <ICommit> commitProjected = projectedCommits
.Take(1)
.ToTask();
using (IEventStream stream = eventStore.CreateStream(streamId))
{
stream.Add(new global::NEventStore.EventMessage {
Body = new TestEvent()
});
stream.CommitChanges(commitId);
}
host.PollNow();
await commitProjected;
dispatchedEvents.Count.Should().Be(1);
dispatchedEvents[0].Commit().Should().NotBeNull();
dispatchedEvents[0].Headers.Should().NotBeNull();
dispatchedEvents[0].Version.Should().Be(1);
dispatchedEvents[0].DomainEvent.Should().BeOfType <TestEvent>();
}
}
}
}
private IEventStream PrepareStream(string bucketId, IAggregate aggregate, Dictionary <string, object> headers)
{
IEventStream stream = _eventStore.CreateStream(bucketId, aggregate.Id);
foreach (var item in headers)
{
stream.UncommittedHeaders[item.Key] = item.Value;
}
aggregate.GetUncommittedEvents()
.Cast <object>()
.Select(x => new EventMessage {
Body = x
})
.ToList()
.ForEach(stream.Add);
return(stream);
}
public async Task When_handler_throws_Then_invoke_exception_callback()
{
using (IStoreEvents eventStore = Wireup.Init().UsingInMemoryPersistence().Build())
{
var projectedEvents = new List <EventMessage <TestEvent> >();
var handlerModule = new TestHandlerModule(projectedEvents);
using (var host = new DurableCommitDispatcher(
new EventStoreClient(eventStore.Advanced),
new InMemoryCheckpointRepository(),
new HandlerResolver(handlerModule)))
{
var projectedCommits = host
.ProjectedCommits
.Replay();
using (projectedCommits.Connect())
{
await host.Start();
var streamId = Guid.NewGuid().ToString().FormatStreamIdWithBucket();
Guid commitId = Guid.NewGuid();
Task <ICommit> commitProjected = projectedCommits
.Take(1)
.ToTask();
using (IEventStream stream = eventStore.CreateStream(streamId))
{
stream.Add(new global::NEventStore.EventMessage {
Body = new TestEventThatThrows()
});
stream.CommitChanges(commitId);
}
host.PollNow();
Func <Task> act = async() => await commitProjected;
act.ShouldThrow <Exception>();
}
}
}
}
// private readonly Dictionary<Guid, List<EventDescriptor>> _current = new Dictionary<Guid, List<EventDescriptor>>();
public void SaveEvents(Guid aggregateId, IEnumerable <Event> events, int expectedVersion)
{
//List<EventDescriptor> eventDescriptors;
//// try to get event descriptors list for given aggregate id
//// otherwise -> create empty dictionary
//if (!_current.TryGetValue(aggregateId, out eventDescriptors))
//{
// eventDescriptors = new List<EventDescriptor>();
// _current.Add(aggregateId, eventDescriptors);
//}
//// check whether latest event version matches current aggregate version
//// otherwise -> throw exception
//else if (eventDescriptors[eventDescriptors.Count - 1].Version != expectedVersion && expectedVersion != -1)
//{
// throw new ConcurrencyException();
//}
using (var stream = expectedVersion <= 0 ? _store.CreateStream(aggregateId) : _store.OpenStream(aggregateId, expectedVersion))
{
if (stream.StreamRevision != expectedVersion && expectedVersion != -1)
{
throw new ConcurrencyException();
}
var i = stream.StreamRevision;
// iterate through current aggregate events increasing version with each processed event
foreach (var @event in events)
{
i++;
@event.Version = i;
// push event to the event descriptors list for current aggregate
//eventDescriptors.Add(new EventDescriptor(aggregateId, @event, i));
stream.Add(new EventMessage {
Body = @event
});
// publish current event to the bus for further processing by subscribers
_publisher.Publish(@event);
}
stream.CommitChanges(Guid.NewGuid());
}
}
public void ReadSetup()
{
_eventStore.Advanced.Purge();
using (var stream = _eventStore.CreateStream(StreamId))
{
// add XXX commits to the stream
for (int i = 0; i < CommitsToWrite; i++)
{
var @event = new SomeDomainEvent {
Value = i.ToString()
};
stream.Add(new EventMessage {
Body = @event
});
stream.CommitChanges(Guid.NewGuid());
}
}
}
public void Add(Concert concert)
{
lock (_object)
{
var bucketId = GetBucketId(concert.Id);
using (var eventStream = _eventStore.CreateStream(bucketId, concert.Id.ToString()))
{
foreach (var @event in concert.Changes)
{
eventStream.Add(new EventMessage()
{
Body = @event
});
}
eventStream.CommitChanges(Guid.NewGuid());
}
}
}
private IEventStream PrepareStream(IStoreEvents eventStore, IAggregateRoot aggregate, Dictionary <string, object> headers, IEnumerable <IDomainEvent> uncommitedEvents)
{
IEventStream stream;
if (!_streams.TryGetValue(aggregate.Key, out stream))
{
_streams[aggregate.Key] = stream = eventStore.CreateStream(aggregate.Key);
}
foreach (var item in headers)
{
stream.UncommittedHeaders[item.Key] = item.Value;
}
uncommitedEvents
.Cast <object> ()
.Select(x => new EventMessage {
Body = x
})
.ToList()
.ForEach(stream.Add);
return(stream);
}
public async Task <string> CreateAsync(string userId, CreateGameModel model)
{
string userHeroId = string.Empty;
string opponentHeroId = string.Empty;
Task userTask = _userRepository.GetByIdAsync(userId).ContinueWith(r =>
{
User result = r.Result;
if (result?.Heroes != null && result.Heroes.Count > 0)
{
userHeroId = result.Heroes[0].Id;
}
});
Task opponentTask = string.IsNullOrEmpty(model.OpponentId) ? Task.FromResult(true) : _userRepository.GetByIdAsync(model.OpponentId).ContinueWith(r =>
{
User result = r.Result;
if (result?.Heroes != null && result.Heroes.Count > 0)
{
opponentHeroId = result.Heroes[0].Id;
}
});
await Task.WhenAll(userTask, opponentTask);
if (string.IsNullOrEmpty(userHeroId) || (!string.IsNullOrEmpty(model.OpponentId) && string.IsNullOrEmpty(opponentHeroId)))
{
throw new KeyNotFoundException("Hero not found");
}
var gameId = Guid.NewGuid();
GameModel gameModel = new GameModel
{
Id = gameId.ToString(),
CreatedBy = userId,
UserHeroId = userHeroId,
OpponentId = model.OpponentId,
OpponentHeroId = opponentHeroId,
Status = GameStatus.Requesting,
CreatedAt = DateTime.UtcNow,
Position = new PositionModel
{
Lat = model.Lat,
Lng = model.Lng
},
OpponentExtInfo = model.OpponentExtInfo,
SelfPlaying = model.SelfPlaying,
Speed = model.Speed,
Difficulty = model.Difficulty,
UserArmySetting = model.UserArmySetting
};
GameModel game = gameModel;
using (IEventStream stream = _store.CreateStream(new Guid(game.Id)))
{
var initEvent = new InitGameEvent
{
UserId = userId,
UserHeroId = userHeroId,
OpponentId = model.OpponentId,
OpponentHeroId = opponentHeroId,
SelfPlaying = model.SelfPlaying,
Speed = model.Speed,
Difficulty = model.Difficulty,
UserArmySetting = Mapper.Map <GameArmySetting>(model.UserArmySetting),
UserTroopTypes = Mapper.Map <List <CastleTroopType> >(await GetRandomTroopTypes()),
OpponentTroopTypes = Mapper.Map <List <CastleTroopType> >(await GetRandomTroopTypes()),
};
initEvent.UserProducedTroopTypes = new List <string>()
{
initEvent.UserTroopTypes
.First(e => e.UpkeepCoins == initEvent.UserTroopTypes.Min(f => f.UpkeepCoins))
.ResourceType
};
initEvent.OpponentProducedTroopTypes = new List <string>()
{
initEvent.OpponentTroopTypes
.First(e => e.UpkeepCoins == initEvent.OpponentTroopTypes.Min(f => f.UpkeepCoins))
.ResourceType
};
stream.Add(new EventMessage
{
Body = initEvent
});
stream.Add(new EventMessage
{
Body = new ChangeGameStatusEvent
{
Status = GameStatus.Requesting
}
});
stream.CommitChanges(Guid.NewGuid());
}
await Repository.AddAsync(Mapper.Map <Game>(game));
_domain.Build(gameId, InitGameSnapshot);
return(game.Id);
}
/// <summary>
/// Creates a new stream.
/// </summary>
/// <param name="storeEvents">The store events instance.</param>
/// <param name="streamId">The value which uniquely identifies the stream to be created.</param>
/// <returns>An empty stream.</returns>
public static Task <IEventStream> CreateStream(this IStoreEvents storeEvents, string streamId)
{
EnsureStoreEventsNotNull(storeEvents);
return(storeEvents.CreateStream(Bucket.Default, streamId));
}
private IEventStream CreateStream(Command cmd)
{
return(cmd.IsFirstCommand ? store.CreateStream(cmd.CommandId) : store.OpenStream(cmd.CommandId));
}
/// <summary>
/// Creates a new stream.
/// </summary>
/// <param name="storeEvents">The store events instance.</param>
/// <param name="bucketId">The value which uniquely identifies bucket the stream belongs to.</param>
/// <param name="streamId">The value which uniquely identifies the stream within the bucket to be created.</param>
/// <returns>An empty stream.</returns>
public static Task <IEventStream> CreateStream(this IStoreEvents storeEvents, string bucketId, Guid streamId)
{
EnsureStoreEventsNotNull(storeEvents);
return(storeEvents.CreateStream(bucketId, streamId.ToString()));
}
static void PopulateStore(IStoreEvents store, IBus bus)
{
var agID = Guid.NewGuid();
var stream = store.CreateStream(agID);
var loE = new List<EventMessage>();
AddTextMessage(loE, "CreateEntity");
AddTextMessage(loE, "SupplyHedgedForPeriod");
AddTextMessage(loE, "SupplyHedgedForPeriod");
AddTextMessage(loE, "Usage");
loE.ForEach(stream.Add);
using (var scope = new TransactionScope())
{
Console.WriteLine("In transaction {0}", Transaction.Current != null);
stream.CommitChanges(Guid.NewGuid());
throw new Exception("Bad stuff here");
bus.Publish(new TestDomainMessage("hello"));
scope.Complete();
}
}
