public ISubscription Subscribe(IMessageHandler messageHandler, string groupId, params string[] topics)
{
if (messageHandler == null)
{
throw new ArgumentNullException(nameof(messageHandler));
}
if (groupId == null)
{
throw new ArgumentNullException(nameof(groupId));
}
if (topics == null)
{
throw new ArgumentNullException(nameof(topics));
}
if (topics.Length < 1)
{
throw new ArgumentException("At least one topic is necessary to subscribe.", nameof(topics));
}
var kafkaConsumerWrapper = new KafkaConsumerWrapper(configuration, loggerFactory, groupId);
consumers.Add(kafkaConsumerWrapper);
return(new KafkaSubscription(kafkaConsumerWrapper, messageHandler, groupId, topics));
//return Task.Run(() => kafkaConsumerWrapper.SubscribeAndStartPoll(messageHandler, topics, cancellationToken));
}
public KafkaSubscription(KafkaConsumerWrapper kafkaConsumerWrapper, IMessageHandler messageHandler, string groupId, string[] topics)
{
this.kafkaConsumerWrapper = kafkaConsumerWrapper ?? throw new System.ArgumentNullException(nameof(kafkaConsumerWrapper));
this.messageHandler = messageHandler ?? throw new System.ArgumentNullException(nameof(messageHandler));
this.groupId = groupId ?? throw new System.ArgumentNullException(nameof(groupId));
this.topics = topics;
}
public IMessage ReadSingle(IDictionary <string, object> messageAddress)
{
if (messageAddress == null)
{
throw new ArgumentNullException(nameof(messageAddress));
}
if (readFromParticularAddressConsumer == null)
{
readFromParticularAddressConsumer = new KafkaConsumerWrapper(configuration, loggerFactory, ReadFromParticularAddressGroup);
}
return(readFromParticularAddressConsumer.ReadFromParticularAddress(messageAddress));
}
