public async Task Run(CancellationToken cancellationToken)
{
try
{
var logger = PipelineContext.LoggerFactory?.CreateLogger(GetType());
try
{
logger?.LogInformation($"Starting pipeline step {StepNumber} of {PipelineContext.TotalSteps}");
await RunCore(cancellationToken);
logger?.LogInformation($"Completing pipeline step {StepNumber} of {PipelineContext.TotalSteps}");
}
catch (Exception e)
{
logger?.LogError(e, $"Error while running pipeline step {StepNumber} of {PipelineContext.TotalSteps}");
throw;
}
}
finally
{
//This statement is in place to ensure that no matter what, the output collection
//will be marked "complete". Without this, an exception in the try block above can
//lead to a stalled (i.e. non-terminating) pipeline because this thread's consumer
//is waiting for more output from this thread, which will never happen because the
//thread is now dead. This should also ensure we get at least partial output in case
//of an exception.
OutputCollection.CompleteAdding();
}
}
