public void AddBrokers(string bootstrapServers)
{
var producerConfig = new ProducerConfig {
BootstrapServers = "localhost:65533"
};
using (var producer = new ProducerBuilder <Null, string>(producerConfig).Build())
using (var adminClient = new AdminClient(producer.Handle))
{
try
{
var metadata = adminClient.GetMetadata(TimeSpan.FromSeconds(3));
Assert.True(false, "Broker should not be reached here");
}
catch (KafkaException e)
{
Assert.Equal(ErrorCode.Local_Transport, e.Error.Code);
}
// test is > 0 note == 1 since bootstrapServers could include more than one broker.
int brokersAdded = adminClient.AddBrokers(bootstrapServers);
Assert.True(brokersAdded > 0, "Should have added one broker or more");
brokersAdded = adminClient.AddBrokers(bootstrapServers);
Assert.True(brokersAdded > 0, "Should have added one broker or more (duplicates considered added)");
var newMetadata = adminClient.GetMetadata(TimeSpan.FromSeconds(3));
Assert.True(newMetadata.Brokers.Count == 1);
brokersAdded = adminClient.AddBrokers("");
Assert.True(brokersAdded == 0, "Should not have added brokers");
newMetadata = adminClient.GetMetadata(TimeSpan.FromSeconds(3));
Assert.True(newMetadata.Brokers.Count > 0);
}
}