private object ToEventObject(RecordedEvent eventData)
{
var headers = JsonConvert.DeserializeObject <Dictionary <string, string> >(Encoding.GetString(eventData.Metadata));
var eventType = Type.GetType(headers[EventTypeHeader]);
return(JsonConvert.DeserializeObject(Encoding.GetString(eventData.Data), eventType));
}
public static T GetEvent <T>(this RecordedEvent evt)
{
{
var eventString = Encoding.UTF8.GetString(evt.Data);
return(JsonConvert.DeserializeObject <T>(eventString));
}
}
public static IMessage ToMessage(this RecordedEvent recordedEvent)
{
var data = recordedEvent.Data;
if (recordedEvent.Metadata.Length > 0)
{
var metadata = JObject.Parse(Encoding.UTF8.GetString(recordedEvent.Metadata));
if (metadata["encoding"].Value <string>() == "gzip")
{
using (var originalStream = new MemoryStream())
{
using (var compressedStream = new MemoryStream(data))
using (var gZipStream = new GZipStream(compressedStream, CompressionMode.Decompress))
{
gZipStream.CopyTo(originalStream);
}
data = originalStream.ToArray();
}
}
}
if (Types.Value.TryGetValue(recordedEvent.EventType, out var factory))
{
var message = factory.Value.Invoke();
message.MergeFrom(data);
return(message);
}
return(null);
}
private static string GetEventClrTypeName(RecordedEvent eventData)
{
var eventClrTypeName = JObject.Parse(Encoding.UTF8.GetString(eventData.Metadata)).Property("EventClrType")
.Value;
return(eventClrTypeName.ToString());
}
public static IEnumerable <IEvent> Parse(this RecordedEvent data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
var value = Encoding.UTF8.GetString(data.Data);
switch (data.EventType)
{
case nameof(AccountCreated): return(JsonConvert.DeserializeObject <AccountCreatedEventHandler>(value).Events);
case nameof(DailyWireTransferLimitChanged): return(JsonConvert.DeserializeObject <DailyWireTransferLimitChangedEventHandler>(value).Events);
case nameof(CashDeposited): return(JsonConvert.DeserializeObject <CashDepositedHandler>(value).Events);
case nameof(OverdraftLimitChanged): return(JsonConvert.DeserializeObject <OverdraftLimitChangedEventHandler>(value).Events);
case nameof(AccountBlocked): return(JsonConvert.DeserializeObject <AccountBlockedEventHandler>(value).Events);
case nameof(CashWithdrawn): return(JsonConvert.DeserializeObject <CashWithdrawnEventHandler>(value).Events);
case nameof(AccountUnblocked): return(JsonConvert.DeserializeObject <AccountUnblockedEventHandler>(value).Events);
case nameof(WireTransfered): return(JsonConvert.DeserializeObject <WireTransferedEventHandler>(value).Events);
case nameof(ChequeDeposited): return(JsonConvert.DeserializeObject <ChequeDepositedEventHandler>(value).Events);
default: return(null);
}
}
public IDisposable SubscribeToAllFrom(Position @from, Action <RecordedEvent> eventAppeared, CatchUpSubscriptionSettings settings = null,
Action liveProcessingStarted = null, Action <SubscriptionDropReason, Exception> subscriptionDropped = null,
UserCredentials userCredentials = null, bool resolveLinkTos = true)
{
var current = (int)@from.CommitPosition;
var currentEvents = new RecordedEvent[] { };
lock (_allStream) {
if (@from == Position.End)
{
current = _allStream.Count - 1;
}
if (current < _allStream.Count - 1)
{
var events = new RecordedEvent[_allStream.Count - current];
_allStream.CopyTo(events, current);
currentEvents = events;
}
}
for (int i = 0; i < currentEvents.Length; i++)
{
eventAppeared(currentEvents[i]);
}
var subscription = new AllStreamSubscription(current, subscriptionDropped, eventAppeared);
subscription.BusSubscription = _inboundEventBus.Subscribe(subscription);
_subscriptions.Add(subscription);
liveProcessingStarted?.Invoke();
return(subscription);
}
private static object DeserializeEvent(RecordedEvent eventData)
{
var eventClrTypeName = GetEventClrTypeName(eventData);
return(JsonConvert.DeserializeObject(Encoding.UTF8.GetString(eventData.Data),
Type.GetType(eventClrTypeName)));
}
public override void Handle(TState s, RecordedEvent e)
{
if (e.Event is TEvent ev)
{
_action(s, ev, (ID)e.StreamID);
}
}
private void Handle(TState s, RecordedEvent e)
{
foreach (EventRegistration handler in _handlers)
{
handler.Handle(s, e);
}
}
private IEvent DeserializeEvent(RecordedEvent evt)
{
var targetType = GetEventType(evt.EventType);
var json = Encoding.UTF8.GetString(evt.Data);
return(JsonConvert.DeserializeObject(json, targetType) as IEvent);
}
private static string GetStreamName(string?prefix, RecordedEvent @event)
{
var streamName = @event.EventStreamId;
if (prefix != null && streamName.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
{
streamName = streamName[(prefix.Length + 1)..];
public static IDomainEvent ToDomainEvent(this RecordedEvent recordedEvent)
{
var data = recordedEvent.Data.FromUtf8();
var meta = recordedEvent.Metadata.FromUtf8();
var eventHeaders = JsonConvert.DeserializeObject <Dictionary <string, string> >(meta);
if (!eventHeaders.ContainsKey(EventStoreConstants.EventTypeHeader))
{
throw new InvalidOperationException("EventTypeHeader Header not found");
}
var typeName = eventHeaders[EventStoreConstants.EventTypeHeader];
Type eventClrType;
if (EventTypeMap.Instance.Mappings.ContainsKey(typeName))
{
var b = EventTypeMap.Instance.Mappings.TryGetValue(typeName, out eventClrType);
if (!b)
{
throw new InvalidOperationException("Error with EventTypeMap");
}
}
else
{
eventClrType = Type.GetType(typeName, true);
}
var o = JsonConvert.DeserializeObject(data, eventClrType);
return(o as IDomainEvent);
}
public void Update(RecordedEvent evt)
{
var data = evt.Data;
var dataJson = Encoding.UTF8.GetString(data);
switch (evt.EventType)
{
case "OrderPaymentFailure":
IsPaid = false;
break;
case "OrderPaymentSuccess":
var order = JsonConvert.DeserializeObject <OrderModel>(dataJson);
ProductCount = order.Products.Count;
IsPaid = true;
IsPrepared = false;
break;
case "OrderPrepared":
IsPrepared = true;
break;
default: break;
}
}
public static object Deserialize(this RecordedEvent evt, EventTypeResolver eventTypeResolver)
{
var targetType = eventTypeResolver.GetTypeForEventName(evt.EventType);
var json = Encoding.UTF8.GetString(evt.Data);
return(JsonConvert.DeserializeObject(json, targetType));
}
internal static TEvent ToDomainEvent <TEvent>(this RecordedEvent recordedEvent)
{
var value = Encoding.UTF8.GetString(recordedEvent.Data);
var eventType = Type.GetType(recordedEvent.EventType);
return((TEvent)JsonConvert.DeserializeObject(value, eventType));
}
public static IEvent DeserializeEvent(this RecordedEvent orginalEvent)
{
var eventDataJson = Encoding.UTF8.GetString(orginalEvent.Data);
if (string.IsNullOrWhiteSpace(eventDataJson) || eventDataJson == "{}")
{
throw new Exception("eventDataJson is empty");
}
var parsedObject = JObject.Parse(eventDataJson);
var metaDataJToken = parsedObject["Metadata"];
if (metaDataJToken == null)
{
throw new Exception("metaDataJToken is null");
}
var eventMetadata = metaDataJToken.ToObject <EventMetadata>();
var eventData = DeserializeObject(eventDataJson, eventMetadata.CustomMetadata[EventClrTypeHeader]) as IEvent;
if (eventData == null)
{
throw new Exception("eventData is null");
}
eventData.Metadata.EventNumber = orginalEvent.EventNumber;
eventData.Metadata.EventId = orginalEvent.EventId.ToString();
return(eventData);
}
public static T Deserialize <T>(this RecordedEvent recordedEvent)
{
var data = recordedEvent.Data;
var json = Encoding.UTF8.GetString(data);
return(JsonConvert.DeserializeObject <T>(json));
}
private object DeserializeEvent(RecordedEvent recoredEvent)
{
Type eventType = Type.GetType(recoredEvent.EventType);
string dataJson = Encoding.UTF8.GetString(recoredEvent.Data);
return(JsonConvert.DeserializeObject(dataJson, eventType));
}
private static BankAccountEvent MapEventToDomain(RecordedEvent returnedEvent)
{
var eventType = returnedEvent.EventType;
var dataString = Encoding.UTF8.GetString(returnedEvent.Data);
return(DeserializeEvent(eventType, dataString));
}
private void OnEvent(RecordedEvent recordedEvent, Position position)
{
if (Event != null)
{
Event(this, new RecordedEventEventArgs(recordedEvent));
}
}
public void Record(IEnumerable <IEvent> eventBatch)
{
var recordedEvents = new List <RecordedEvent>();
foreach (var e in eventBatch)
{
var timestamp = DateTime.Now.ToUniversalTime();
var sequencenumber = timestamp.Ticks.ToString("00000000000000000000") + _eventCounter++.ToSequenceNumber();
var re = new RecordedEvent(Guid.NewGuid(),
timestamp,
sequencenumber,
e.Name,
e.Context,
e.Data);
var edoc = new BsonDocument {
{ "_id", re.Id.ToString() },
{ "timestamp", re.Timestamp },
{ "sequencenumber", re.Sequencenumber },
{ "name", re.Name },
{ "context", re.Context },
{ "data", re.Data }
};
_eventCol.Insert(edoc);
recordedEvents.Add(re);
}
recordedEvents.ForEach(OnRecorded);
}
public Option <IEvent> FromEventData(RecordedEvent recordedEvent)
{
if (recordedEvent == null)
{
throw new ArgumentNullException(nameof(recordedEvent));
}
var settings = new JsonSerializerSettings
{
ContractResolver = new CamelCasePropertyNamesContractResolver()
};
if (recordedEvent.EventType.StartsWith("$"))
{
return(Option.None <IEvent>());
}
var json = Encoding.UTF8.GetString(recordedEvent.Data);
var fromEventData = (IEvent)JsonConvert.DeserializeObject(json, Type.GetType(recordedEvent.EventType), settings);
return(fromEventData == null
? Option.None <IEvent>()
: Option.Some(fromEventData));
}
public void Handle(RecordedEvent recordedEvent, BookOrderResult result)
{
var st = Encoding.ASCII.GetString(recordedEvent.Data);
T ev = JsonConvert.DeserializeObject <T>(st);
DoHandle(ev, result);
}
public TEvent FromEventData <TEvent>(RecordedEvent eventData)
where TEvent : class, IAggregateEvent
{
var json = this._serializer.DeserializeFromBytes(eventData.Data);
return(this._serializer.Deserialize <TEvent>(json));
}
public object Deserialize(RecordedEvent evt)
{
var targetType = GetTypeForEventName(evt.EventType);
var json = Encoding.UTF8.GetString(evt.Data);
return(JsonConvert.DeserializeObject(json, targetType));
}
/// <summary>
/// Deserialization of <see cref="IEvent"/>
/// </summary>
/// <param name="event">Event from EventStore</param>
/// <returns>Domain event</returns>
private IEvent Deserialize(RecordedEvent @event)
{
string data = Encoding.UTF8.GetString(@event.Data);
var metadata = JsonConvert.DeserializeObject <EventMetadata>(Encoding.UTF8.GetString(@event.Metadata));
return(JsonConvert.DeserializeObject(data, Type.GetType(metadata.AssemblyQualifiedName)) as IEvent);
}
public static void VerifyIfMatched(RecordedEvent evnt)
{
if (evnt.EventType.StartsWith("TestEvent"))
{
var data = Encoding.UTF8.GetString(evnt.Data);
var atoms = data.Split('-');
if (atoms.Length != 3)
{
throw new ApplicationException(string.Format("Invalid TestEvent object: currupted data format: {0}",
RecordDetailsString(evnt)));
}
var expectedLength = int.Parse(atoms[1]);
if (expectedLength != atoms[2].Length)
{
throw new ApplicationException(string.Format("Invalid TestEvent object: not expected data length: {0}",
RecordDetailsString(evnt)));
}
if (new string('#', expectedLength) != atoms[2])
{
throw new ApplicationException(string.Format("Invalid TestEvent object: currupted data: {0}",
RecordDetailsString(evnt)));
}
}
}
public static IDomainEvent ToDomainEvent(this RecordedEvent recordedEvent)
{
var serializedEventString = Encoding.UTF8.GetString(recordedEvent.Data);
var eventMetaData = EventMetaData.EventMetaDataFrom(recordedEvent);
return(serializedEventString.ToDomainEventUsing(eventMetaData));
}
private object DeserializeEvent(RecordedEvent evt)
{
var targetType = _eventTypeResolver.GetTypeForEventName(evt.EventType);
var json = Encoding.UTF8.GetString(evt.Data);
return(JsonConvert.DeserializeObject(json, targetType));
}
private StoredEvent ToStoredEvent(RecordedEvent recordedEvent)
=> new StoredEvent(
recordedEvent.StreamId,
recordedEvent.Id,
recordedEvent.Number,
recordedEvent.Type,
recordedEvent.Created,
(IDomainEvent)_serializer.Deserialize(recordedEvent));
public void Write(string filename, RecordedEvent @event)
{
using (var sw = new StreamWriter(filename))
{
sw.WriteLine("1.0");
sw.WriteLine(@event.Id);
sw.WriteLine(@event.Timestamp.ToString("yyyy-MM-ddThh:mm:ss.fffffff"));
sw.WriteLine(@event.Sequencenumber);
sw.WriteLine(@event.Name);
sw.WriteLine(@event.Context);
sw.Write(@event.Data);
}
}
public IEnumerable<IRecordedEvent> Play()
{
using (var connection = new SQLiteConnection(connectionString))
{
connection.Open();
using (var command = connection.CreateCommand())
{
var sb = new StringBuilder("SELECT sequencenumber, id, timestamp, name, context, data FROM events")
.AppendFormat(" WHERE sequencenumber >= {0}", fromSequenceNumber);
foreach (var nameConstraint in nameConstraints)
{
var options = String.Join(", ", nameConstraint.Select(SqliteStringEscape));
sb.AppendFormat(" AND name in ({0})", options);
}
foreach (var contextConstraint in contextConstraints)
{
var options = String.Join(", ", contextConstraint.Select(SqliteStringEscape));
sb.AppendFormat(" AND context in ({0})", options);
}
sb.AppendFormat(" ORDER BY sequencenumber");
command.CommandText = sb.ToString();
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
var recordedEvent = new RecordedEvent(
Guid.Parse(reader.GetString(1)),
reader.GetDateTime(2),
reader.GetInt64(0).ToSequenceNumber(),
reader.GetString(3),
reader.GetString(4),
reader.GetString(5));
yield return recordedEvent;
}
}
}
}
}
void AssertRecordedEvent(int version, EventData source, RecordedEvent actual)
{
var expected = source.Record(partition, version);
actual.ShouldMatch(expected.ToExpectedObject());
}
private void OnPackageReceived(TcpTypedConnection connection, TcpPackage package)
{
Subscription subscription;
if(!_subscriptions.TryGetValue(package.CorrelationId, out subscription))
{
_log.Error("Unexpected package received : {0} ({1})", package.CorrelationId, package.Command);
return;
}
try
{
switch (package.Command)
{
case TcpCommand.StreamEventAppeared:
var dto = package.Data.Deserialize<ClientMessage.StreamEventAppeared>();
var recordedEvent = new RecordedEvent(dto);
var commitPos = dto.CommitPosition;
var preparePos = dto.PreparePosition;
ExecuteUserCallbackAsync(() => subscription.EventAppeared(recordedEvent, new Position(commitPos, preparePos)));
break;
case TcpCommand.SubscriptionDropped:
case TcpCommand.SubscriptionToAllDropped:
Subscription removed;
if(_subscriptions.TryRemove(subscription.Id, out removed))
{
removed.Source.SetResult(null);
ExecuteUserCallbackAsync(removed.SubscriptionDropped);
}
break;
default:
throw new ArgumentOutOfRangeException(string.Format("Unexpected command : {0}", package.Command));
}
}
catch (Exception e)
{
_log.Error(e, "Error on package received");
}
}
