public void Post(DataFlowToken token)
{
this.Init();
var wasQueued = this.StartBlock.Post(token);
if (!wasQueued)
{
throw new InvalidFlowException("Message not accepted by the flow. Probably token send after flow is completed.");
}
}
public async Task PostToFlowAsync(DataFlowToken token)
{
if (this._flow == null)
{
var builder = new FlowModelBuilder(this._blockFactory);
this._flowFactory(builder);
this._flow = builder.BuildFlow();
}
this._flow.Post(token);
await this._flow.GetCompletionTask();
}
private IEnumerable <DataFlowToken> TransformInternal(DataFlowToken token)
{
Stopwatch perfCount = new Stopwatch();
try
{
perfCount.Start();
if (token.HasTerminated)
{
this.OnTerminatedTokenReceived?.Invoke(this, new TerminatedTokenReceivedEventArgs(token));
// just pass token to the next block - ignore processing of current block
// we want to pass for instance to the end block that will process results
return(this.PrepareResult(new[] { token }));
}
try
{
return(this.PrepareResult(this.Transform(token)));
}
catch (Exception ex)
{
token.HasTerminated = true;
this.FlowLogger.Error(token, ex);
this._flowExceptionManager.IncrementExceptionCount();
if (this._flowExceptionManager.IsCritical(ex) || this._flowExceptionManager.IsExceptionCountExceeded())
{
this._cancellationTokenSource.Cancel();
throw;
}
return(this.PrepareResult(new[] { token }));
}
}
finally
{
perfCount.Stop();
PerformanceMonitor.RegisterExecution(this.GetType().Name, perfCount.ElapsedTicks);
}
}
public abstract IEnumerable <DataFlowToken> Transform(DataFlowToken token);
/// <inheritdoc cref="IDataFlowLogger"/>
public void Warn(DataFlowToken token, string formatter, params object[] arguments)
{
this._currentBlockLogger.Warn(string.Concat(token.TokenId, " ", formatter), arguments);
}
/// <inheritdoc cref="IDataFlowLogger"/>
public void Error(DataFlowToken token, Exception exception, string message)
{
this._currentBlockLogger.Error(exception, string.Concat(token.TokenId, " ", message));
}
/// <inheritdoc cref="IDataFlowLogger"/>
public void Error(DataFlowToken token, Exception exception)
{
this._currentBlockLogger.Error(exception, token.TokenId.ToString());
}
