public IConsumer <TKey, TValue> Build()
{
Confluent.Kafka.IConsumer <TKey, TValue> consumer = null;
try
{
if (_brokerList.Count == 0)
{
throw new InvalidOperationException($"One broker must be added to build a consumer. Use the {nameof(AddBroker)} method to add a broker!");
}
_configuration["bootstrap.servers"] = String.Join(", ", _brokerList.ToArray());
var builder = new Confluent.Kafka.ConsumerBuilder <TKey, TValue>(_configuration.Select(kp => new KeyValuePair <string, string>(kp.Key, kp.Value.ToString())).AsEnumerable());
SetHandlers(builder);
consumer = builder.Build();
return(consumer);
}
finally
{
if (_subscribeOnBuild)
{
consumer.Subscribe(_topics);
}
}
}
public KafkaConsumer(Confluent.Kafka.IConsumer <TKey, TValue> kafkaConsumer, IKafkaSubscriptionHandler <TKey, TValue> subscriptionHandler, ILogger <KafkaConsumer <TKey, TValue> > logger)
{
this._kafkaConsumer = kafkaConsumer ?? throw new ArgumentNullException(nameof(kafkaConsumer));
this._subscriptionHandler = subscriptionHandler ?? throw new ArgumentNullException(nameof(subscriptionHandler));
this._logger = logger ?? throw new ArgumentNullException(nameof(logger));
this._subscriptionHandler.SubscriptionChanged += OnSubscriptionChanged;
}
public KafkaConsumer(Confluent.Kafka.IConsumer <TKey, TValue> consumer, string topic)
{
_consumer = consumer;
_topic = topic;
}
public Commitable(ConsumeResult <TKey, TValue> consumeResult, Confluent.Kafka.IConsumer <TKey, TValue> consumer)
{
_consumeResult = consumeResult;
_consumer = consumer;
}
[Factory] public static IConsumer <TKey, TValue> CreateConsumer <TKey, TValue>(Confluent.Kafka.IConsumer <TKey, TValue> consumer, Config config) => new KafkaConsumer <TKey, TValue>(consumer, config.ConsumedTopic);