/// <summary>
/// This assumes that a topic has only one type. Jay Kreps recommends separating different event types
/// into different topics at http://www.confluent.io/blog/stream-data-platform-2/. Besides, heterogeneous-event
/// topics aren't directly supported by the driver.
/// </summary>
/// <returns></returns>
private static async Task <ConfluentResponse <List <AvroMessage <TK, TV> > > > ConsumeOnceAsync(
IConfluentClient confluentClient,
ConsumerInstance consumerInstance,
string topic)
{
return(await confluentClient.ConsumeAsAvroAsync <TK, TV>(consumerInstance, topic));
}
private void buttonConsumeAvro_Click(object sender, EventArgs e)
{
var maxBytes = GetMaxBytesOrNull();
if (maxBytes.HasValue)
{
Run(() => _confluentClient.ConsumeAsAvroAsync <string, Person>(new ConsumerInstance
{
BaseUri = string.Format("{0}/consumers/{1}/instances/{2}", _baseUrl, textBoxConsumerGroup.Text, textBoxConsumerId.Text),
InstanceId = textBoxConsumerId.Text
}, textBoxTopic.Text, maxBytes.Value).Result);
}
else
{
Run(() => _confluentClient.ConsumeAsAvroAsync <string, Person>(new ConsumerInstance
{
BaseUri = string.Format("{0}/consumers/{1}/instances/{2}", _baseUrl, textBoxConsumerGroup.Text, textBoxConsumerId.Text),
InstanceId = textBoxConsumerId.Text
}, textBoxTopic.Text).Result);
}
}