/// <summary>
/// 事务性事件提交
/// 使用该函数前必须开启事务，不然会出现异常
/// </summary>
/// <param name="event"></param>
/// <param name="eUID"></param>
protected void TxRaiseEvent(IEvent @event, EventUID eUID = null)
{
try
{
if (CurrentTransactionStartVersion == -1)
{
throw new UnopenedTransactionException(GrainId.ToString(), GrainType, nameof(TxRaiseEvent));
}
Snapshot.Base.IncrementDoingVersion(GrainType);//标记将要处理的Version
var fullyEvent = new FullyEvent <PrimaryKey>
{
StateId = GrainId,
Event = @event,
Base = new EventBase
{
Version = Snapshot.Base.Version + 1
}
};
string unique = default;
if (eUID is null)
{
fullyEvent.Base.Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
unique = fullyEvent.GetEventId();
}
else
{
fullyEvent.Base.Timestamp = eUID.Timestamp;
unique = eUID.UID;
}
WaitingForTransactionTransports.Add(new EventTransport <PrimaryKey>(fullyEvent, unique, fullyEvent.StateId.ToString()));
SnapshotHandler.Apply(Snapshot, fullyEvent);
Snapshot.Base.UpdateVersion(fullyEvent.Base, GrainType);//更新处理完成的Version
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace("TxRaiseEvent completed: {0}->{1}->{2}", GrainType.FullName, Serializer.Serialize(fullyEvent), Serializer.Serialize(Snapshot));
}
}
catch (Exception ex)
{
Logger.LogCritical(ex, "TxRaiseEvent failed: {0}->{1}->{2}", GrainType.FullName, Serializer.Serialize(@event, @event.GetType()), Serializer.Serialize(Snapshot));
Snapshot.Base.DecrementDoingVersion();//还原doing Version
throw;
}
}
protected virtual async Task <bool> RaiseEvent(IEvent @event, EventUID eUID = null)
{
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace("Start raise event, grain Id ={0} and state version = {1},event type = {2} ,event ={3},uniqueueId= {4}", GrainId.ToString(), Snapshot.Base.Version, @event.GetType().FullName, Serializer.SerializeToString(@event), eUID);
}
if (Snapshot.Base.IsOver)
{
throw new StateIsOverException(Snapshot.Base.StateId.ToString(), GrainType);
}
try
{
var fullyEvent = new FullyEvent <PrimaryKey>
{
Event = @event,
Base = new EventBase
{
Version = Snapshot.Base.Version + 1
},
StateId = Snapshot.Base.StateId
};
string unique = default;
if (eUID == default)
{
fullyEvent.Base.Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
unique = fullyEvent.GetEventId();
}
else
{
fullyEvent.Base.Timestamp = eUID.Timestamp;
unique = eUID.UID;
}
var startTask = OnRaiseStart(fullyEvent);
if (!startTask.IsCompletedSuccessfully)
{
await startTask;
}
Snapshot.Base.IncrementDoingVersion(GrainType);//标记将要处理的Version
var bytesTransport = new EventBytesTransport(
TypeContainer.GetTypeCode(@event.GetType()),
Snapshot.Base.StateId,
fullyEvent.Base.GetBytes(),
Serializer.SerializeToBytes(@event)
);
if (await EventStorage.Append(fullyEvent, in bytesTransport, unique))
{
SnapshotHandler.Apply(Snapshot, fullyEvent);
Snapshot.Base.UpdateVersion(fullyEvent.Base, GrainType);//更新处理完成的Version
var task = OnRaised(fullyEvent, bytesTransport);
if (!task.IsCompletedSuccessfully)
{
await task;
}
var saveSnapshotTask = SaveSnapshotAsync();
if (!saveSnapshotTask.IsCompletedSuccessfully)
{
await saveSnapshotTask;
}
await PublishToEventBust(bytesTransport.GetBytes(), GrainId.ToString());
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace("Raise event successfully, grain Id= {0} and state version = {1}", GrainId.ToString(), Snapshot.Base.Version);
}
return(true);
}
else
{
Snapshot.Base.DecrementDoingVersion();//还原doing Version
if (Logger.IsEnabled(LogLevel.Information))
{
Logger.LogInformation("Raise event failure because of idempotency limitation, grain Id = {0},state version = {1},event type = {2} with version = {3}", GrainId.ToString(), Snapshot.Base.Version, @event.GetType().FullName, fullyEvent.Base.Version);
}
var task = OnRaiseFailed(fullyEvent);
if (!task.IsCompletedSuccessfully)
{
await task;
}
}
}
public static EventUID GetNextUID <PrimaryKey>(this FullyEvent <PrimaryKey> @event)
{
return(new EventUID(@event.GetEventId(), @event.Base.Timestamp));
}
protected virtual async Task <bool> RaiseEvent(IEvent @event, EventUID eUID = null)
{
if (Snapshot.Base.IsOver)
{
throw new StateIsOverException(Snapshot.Base.StateId.ToString(), GrainType);
}
try
{
var fullyEvent = new FullyEvent <PrimaryKey>
{
Event = @event,
Base = new EventBase
{
Version = Snapshot.Base.Version + 1
},
StateId = Snapshot.Base.StateId
};
string unique = default;
if (eUID is null)
{
fullyEvent.Base.Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
unique = fullyEvent.GetEventId();
}
else
{
fullyEvent.Base.Timestamp = eUID.Timestamp;
unique = eUID.UID;
}
var startTask = OnRaiseStart(fullyEvent);
if (!startTask.IsCompletedSuccessfully)
{
await startTask;
}
Snapshot.Base.IncrementDoingVersion(GrainType);//标记将要处理的Version
var evtType = @event.GetType();
var bytesTransport = new EventBytesTransport(
TypeFinder.GetCode(evtType),
Snapshot.Base.StateId,
fullyEvent.Base.GetBytes(),
Serializer.SerializeToUtf8Bytes(@event, evtType)
);
if (await EventStorage.Append(fullyEvent, in bytesTransport, unique))
{
SnapshotHandler.Apply(Snapshot, fullyEvent);
Snapshot.Base.UpdateVersion(fullyEvent.Base, GrainType);//更新处理完成的Version
var task = OnRaised(fullyEvent, bytesTransport);
if (!task.IsCompletedSuccessfully)
{
await task;
}
var saveSnapshotTask = SaveSnapshotAsync();
if (!saveSnapshotTask.IsCompletedSuccessfully)
{
await saveSnapshotTask;
}
await PublishToEventBus(bytesTransport.GetBytes(), GrainId.ToString());
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace("RaiseEvent completed: {0}->{1}->{2}", GrainType.FullName, Serializer.Serialize(fullyEvent), Serializer.Serialize(Snapshot));
}
return(true);
}
else
{
if (Logger.IsEnabled(LogLevel.Trace))
{
Logger.LogTrace("RaiseEvent failed: {0}->{1}->{2}", GrainType.FullName, Serializer.Serialize(fullyEvent), Serializer.Serialize(Snapshot));
}
Snapshot.Base.DecrementDoingVersion();//还原doing Version
var task = OnRaiseFailed(fullyEvent);
if (!task.IsCompletedSuccessfully)
{
await task;
}
}
}