protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
using (var scope = _serviceScopeFactory.CreateScope())
{
_handler = scope.ServiceProvider.GetRequiredService <IKafkaHandler <TK, TV> >();
var builder = new ConsumerBuilder <TK, TV>(_config).SetValueDeserializer(new KafkaDeserializer <TV>());
using (IConsumer <TK, TV> consumer = builder.Build())
{
consumer.Subscribe(_config.Topic);
while (!stoppingToken.IsCancellationRequested)
{
var result = consumer.Consume(TimeSpan.FromMilliseconds(1000));
if (result != null)
{
await _handler.HandleAsync(result.Message.Key, result.Message.Value);
consumer.Commit(result);
consumer.StoreOffset(result);
}
}
}
}
}
public BackgroundKafkaConsumer(IOptions <KafkaConsumerConfig <TK, TV> > config, IKafkaHandler <TK, TV> handler)
{
_handler = handler;
_config = config.Value;
}
