public ConsumerSettings ToLongRunning(TimeSpan?maxHandlingTime = default)
{
var clone = new ConsumerSettings(this);
clone.SetLongRunning(maxHandlingTime);
return(clone);
}
public KafkaConsumer(
IObserverFactory observerFactory,
IEventDeserializer deserializer,
ConsumerSettings settings,
ILoggerFactory loggerFactory)
{
if (deserializer == null)
{
throw new ArgumentNullException(nameof(deserializer));
}
if (settings == null)
{
throw new ArgumentNullException(nameof(settings));
}
_observerFactory = observerFactory ?? throw new ArgumentNullException(nameof(observerFactory));
_logger = loggerFactory.CreateLogger <KafkaConsumer>();
if (string.IsNullOrWhiteSpace(settings.Config.BootstrapServers))
{
throw new InvalidOperationException("Brokers not specified.");
}
if (string.IsNullOrEmpty(settings.Topic))
{
throw new InvalidOperationException("Topics not specified.");
}
if (string.IsNullOrEmpty(settings.Config.GroupId))
{
throw new InvalidOperationException("Group Id not specified.");
}
_consumer = new ConsumerBuilder <Guid, IStreamEvent>(settings.Config)
.SetKeyDeserializer(KeyDeserializer)
.SetValueDeserializer(new ValueObjectDeserializer(deserializer))
.SetErrorHandler((_, e) => _logger.LogError(
$"KafkaConsumer internal error: Topic: {settings.Topic}, {e.Reason}, Fatal={e.IsFatal}," +
$" IsLocal= {e.IsLocalError}, IsBroker={e.IsBrokerError}"))
.Build();
_consumer.Subscribe(settings.Topic);
}
private ConsumerSettings(ConsumerSettings other)
{
Config = other.Config;
Topic = other.Topic;
}
