static async Task Main(string[] args)
{
var typeName = typeof(Program).Assembly.GetName();
Log($"Start {typeName.Name} (v{typeName.Version})");
var currentConfig = CurrentConfiguration.Build();
// Create the consumer configuration
var config = new ConsumerConfig
{
GroupId = "starwars-consumer-group",
BootstrapServers = currentConfig.BootstrapServers,
AutoOffsetReset = AutoOffsetReset.Earliest
};
Log($"Connect consumer to kafka > {currentConfig.BootstrapServers}");
// Create the consumer
using (var consumer = new ConsumerBuilder <Ignore, string>(config).Build())
{
// Subscribe to the Kafka topic
consumer.Subscribe(new List <string>()
{
currentConfig.Topic
});
// Handle Cancel Keypress
var cts = new CancellationTokenSource();
Console.CancelKeyPress += (_, e) => {
e.Cancel = true; // prevent the process from terminating.
cts.Cancel();
};
Log("Press Ctrl+C to exit");
// Poll for messages
try
{
while (true)
{
try
{
var cr = consumer.Consume(cts.Token);
Log($" >> Consumed message '{cr.Value}' at: '{cr.TopicPartitionOffset}'.");
}
catch (ConsumeException e)
{
Log($" >> Error occured: {e.Error.Reason}");
}
}
}
catch (OperationCanceledException)
{
// Ensure the consumer leaves the group cleanly and final offsets are committed.
consumer.Close();
}
}
}
static async Task Main(string[] args)
{
var typeName = typeof(Program).Assembly.GetName();
Log($"Start {typeName.Name} (v{typeName.Version})");
var currentConfig = CurrentConfiguration.Build();
var config = new ProducerConfig
{
BootstrapServers = currentConfig.BootstrapServers
};
Log($"Connect to kafka > {currentConfig.BootstrapServers}");
using (var producer = new ProducerBuilder <Null, string>(config).Build())
{
var topic = currentConfig.Topic;
try
{
for (int i = 0; i < 5; i++)
{
var message = $"May the Force be with you {i}";
var deliveryResult = await producer.ProduceAsync(topic, new Message <Null, string> {
Value = message
});
Log($" >> Delivered '{deliveryResult.Value}' to '{deliveryResult.TopicPartitionOffset}'");
}
// wait for up to 10 seconds for any inflight messages to be delivered.
producer.Flush(TimeSpan.FromSeconds(10));
}
catch (ProduceException <Null, string> e)
{
Log($" >> Delivery failed: {e.Error.Reason}");
}
}
}