/// <summary>
/// Set a custom partitioner that will be used for all topics
/// except those for which a partitioner has been explicitly configured.
/// </summary>
public ProducerBuilder <TKey, TValue> SetDefaultPartitioner(PartitionerDelegate partitioner)
{
if (this.DefaultPartitioner != null)
{
throw new ArgumentException("Default custom partitioner may only be specified once");
}
this.DefaultPartitioner = partitioner;
return(this);
}
/// <summary>
/// Set a custom partitioner to use when producing messages to
/// <paramref name="topic" />.
/// </summary>
public ProducerBuilder <TKey, TValue> SetPartitioner(string topic, PartitionerDelegate partitioner)
{
if (string.IsNullOrWhiteSpace(topic))
{
throw new ArgumentException("Topic must not be null or empty");
}
if (this.Partitioners.ContainsKey(topic))
{
throw new ArgumentException($"Custom partitioner for {topic} already specified");
}
this.Partitioners.Add(topic, partitioner);
return(this);
}
internal static extern void rd_kafka_topic_conf_set_partitioner_cb(
IntPtr topic_conf, PartitionerDelegate partitioner_cb);
internal static void topic_conf_set_partitioner_cb(
IntPtr topic_conf, PartitionerDelegate partitioner_cb)
=> _topic_conf_set_partitioner_cb(topic_conf, partitioner_cb);