protected override async Task ExecuteAsync(CancellationToken cancellationToken)
{
var topics = options.Topics.Distinct();
consumerFactory.GetConsumer().Subscribe(topics);
await Consume(cancellationTokenSource.Token);
}
GetConsumer <TMessage>(IConsumeContext <TMessage> context,
InstanceHandlerSelector <TConsumer, TMessage> selector)
where TMessage : class
{
IEnumerable <Action <IConsumeContext <TMessage> > > consumers = _consumerFactory.GetConsumer(context, selector);
foreach (var action in consumers)
{
Action <IConsumeContext <TMessage> > consumer = action;
yield return(message =>
{
var received = new ReceivedMessageImpl <TMessage>(message);
try
{
consumer(message);
}
catch (Exception ex)
{
received.SetException(ex);
}
finally
{
_received.Add(received);
}
});
}
}
public IEnumerable <Action <IConsumeContext <TMessage> > > GetConsumer <TMessage>(IConsumeContext <TMessage> context,
InstanceHandlerSelector <TConsumer, TMessage> selector)
where TMessage : class
{
foreach (var action in _consumerFactory.GetConsumer(context, selector))
{
Action <IConsumeContext <TMessage> > consumer = action;
yield return(x =>
{
DateTime startTime = DateTime.UtcNow;
Stopwatch timer = Stopwatch.StartNew();
try
{
consumer(x);
timer.Stop();
x.NotifyResourceUsageCompleted(x.Bus.Endpoint.Address.Uri, startTime, timer.Elapsed);
}
catch (Exception)
{
throw;
}
});
}
}
/// <summary>
/// Entry Point of Application Business Logic
/// </summary>
/// <returns></returns>
public async Task <bool> Execute()
{
try
{
bool hasItems = false;
//get consumer
var consumer = _consumerFactory.GetConsumer();
//get items from queue
await consumer.Consume <IEnumerable <Payload> >(async (IEnumerable <Payload> items) =>
{
if (items != null && items.Any())
{
hasItems = true;
var graph = await GetGraph();
await _processor.Run(items, graph);
}
});
return(hasItems);
}
catch (Exception error)
{
_logger.LogError(error, nameof(Execute));
throw;
}
}
public IEnumerable <Action <IConsumeContext <TMessage> > > GetConsumer <TMessage>(IConsumeContext <TMessage> context,
InstanceHandlerSelector <TConsumer, TMessage> selector)
where TMessage : class
{
yield return(x =>
{
_interceptor(() =>
{
foreach (var consumer in _consumerFactory.GetConsumer(context, selector))
{
consumer(x);
}
});
});
}
public IEnumerable <Action <IConsumeContext <TMessage> > > Enumerate(IConsumeContext <TMessage> context)
{
return(_consumerFactory.GetConsumer(context, Selector));
}
public IEnumerable <Action <IConsumeContext <TMessage> > > GetConsumer <TMessage>(
IConsumeContext <TMessage> context, InstanceHandlerSelector <TConsumer, TMessage> selector)
where TMessage : class
{
return(_delegate.GetConsumer(context, selector));
}
private void StartSchedule(IProducerFactory producerFactory, IConsumerFactory consumerFactory, CancellationToken token)
{
var producers = Enumerable.Range(0, this.Configuration.ProducerCount).Select(_ => producerFactory.GetProducer()).ToList();
var consumers = Enumerable.Range(0, this.Configuration.ConsumerCount).Select(_ => consumerFactory.GetConsumer()).ToList();
var alsoConsumers = producers.Where(x => x is IConsumer).Select(x => x as IConsumer).ToList();
var alsoProducers = consumers.Where(x => x is IProducer).Select(x => x as IProducer).ToList();
if (this.logger != null)
{
this.logger.LogInformation($"{this.LogName}: {producers.Count} Producers has created!");
this.logger.LogInformation($"{this.LogName}: {consumers.Count} Consumers has created!");
if (alsoConsumers.Count > 0 || alsoProducers.Count > 0)
{
var count = alsoConsumers.Count + alsoProducers.Count;
this.logger.LogInformation($"{this.LogName}: {count} detected as both and added!");
}
}
this.producers = producers.Concat(alsoProducers);
this.consumers = consumers.Concat(alsoConsumers);
this.Schedule(token);
}
