public async Task <bool> SaveAsync <T>(T data, byte[] bytes, string uniqueId = null) where T : IEventBase <K>
{
var table = await tableInfo.GetTable(data.Timestamp);
var saveSql = $"INSERT INTO {table.Name}(Id,stateid,msgid,typecode,data,version,iscomplete) VALUES(@Id,@StateId,@MsgId,@TypeCode,@Data,@Version,@IsComplete)";
data.Id = OGuid.GenerateNewId().ToString();
string msgId = uniqueId;
if (string.IsNullOrEmpty(msgId))
{
msgId = data.Id;
}
try
{
using (var conn = tableInfo.CreateConnection())
{
await conn.ExecuteAsync(saveSql, new { data.Id, StateId = data.StateId.ToString(), MsgId = msgId, data.TypeCode, Data = bytes, Version = data.Version, IsComplete = false });
}
return(true);
}
catch (Exception ex)
{
if (!(ex.InnerException is Npgsql.PostgresException e && e.SqlState == "23505"))
{
throw ex;
}
}
return(false);
}
public AmountTransferEvent(string toAccountId, decimal amount, decimal balance)
{
Id = OGuid.GenerateNewId().ToString();
ToAccountId = toAccountId;
Amount = amount;
Balance = balance;
}
protected async ValueTask <bool> RaiseEvent(IEventBase <K> @event, string uniqueId = null, string hashKey = null)
{
try
{
State.IncrementDoingVersion();//标记将要处理的Version
@event.Id = OGuid.GenerateNewId().ToString();
@event.StateId = GrainId;
@event.Version = State.Version + 1;
@event.Timestamp = DateTime.UtcNow;
using (var ms = new PooledMemoryStream())
{
GetSerializer().Serialize(ms, @event);
var bytes = ms.ToArray();
var result = await GetEventStorage().SaveAsync(@event, bytes, uniqueId);
if (result)
{
EventHandle.Apply(State, @event);
if (SupportAsync)
{
//消息写入消息队列，以提供异步服务
await GetMQService().Publish(@event, bytes, string.IsNullOrEmpty(hashKey) ? GrainId.ToString() : hashKey);
}
State.UpdateVersion(@event);//更新处理完成的Version
await SaveSnapshotAsync();
return(true);
}
else
{
State.DecrementDoingVersion();//还原doing Version
}
}
}
catch (Exception ex)
{
State.DecrementDoingVersion();//还原doing Version
Logger.LogError(LogEventIds.EventRaiseError, ex, "Apply event {0} error, EventId={1}", @event.TypeCode, @event.Version);
throw ex;
}
return(false);
}
public AmountAddEvent(decimal amount, decimal balance)
{
Id = OGuid.GenerateNewId().ToString();
Amount = amount;
Balance = balance;
}
