private void SendInitialTestResult(KafkaSendMessageArgs args, string guid, long timestamp)
{
try
{
var client = new RestClient(ConfigurationManager.AppSettings["ResultsUrl"]);
var request = new RestRequest("/Results/InsertKafka", Method.POST);
var sendData = new InitialTestData()
{
Guid = guid,
SendAt = timestamp,
MessageCount = args.MessageCount,
MessageSize = args.MessageByteSize,
Topic = args.Topic,
};
request.AddJsonBody(sendData);
var response = client.Execute <ServiceResponse>(request);
}
catch (Exception ex)
{
_logger.LogError($"KafkaProducer.SendInitialTestResult error: {ex.Message}");
}
}
public ServiceResponse SendToKafka(KafkaSendMessageArgs args)
{
var guid = Guid.NewGuid().ToString();
var message = GetMessage(args);
var serializedMessage = JsonSerializer.SerializeToUtf8Bytes(message);
message.Guid = guid;
var serializedMessageGuid = JsonSerializer.SerializeToUtf8Bytes(message);
using (var producer = new ProducerBuilder <Null, byte[]>(_config).Build())
{
try
{
SendMessages(producer, args, serializedMessage, serializedMessageGuid, guid);
}
catch (Exception ex)
{
_logger.LogError($"Kafka producer error: {ex.Message}");
return(new ServiceResponse()
{
Success = false, Message = ex.Message
});
}
}
return(new ServiceResponse()
{
Success = true, Message = $"{args.MessageCount} messages sent to kafka"
});
}
private KafkaMessage GetMessage(KafkaSendMessageArgs args)
{
var data = string.Empty;
while (data.Length < args.MessageByteSize)
{
data += "a";
}
return(new KafkaMessage
{
Data = data,
});
}
private void SendMessages(IProducer <Null, byte[]> producer, KafkaSendMessageArgs args, byte[] data, byte[] dataGuid, string guid)
{
producer.InitTransactions(TimeSpan.FromSeconds(10));
producer.BeginTransaction();
for (int i = 0; i < args.MessageCount - 1; i++)
{
producer.Produce(args.Topic, new Message <Null, byte[]> {
Value = data
});
}
producer.Produce(args.Topic, new Message <Null, byte[]> {
Value = dataGuid
});
producer.CommitTransaction();
var now = DateTimeOffset.Now.ToUnixTimeMilliseconds();
SendInitialTestResult(args, guid, now);
_logger.LogInformation($"Kafka sender: Guid = {guid} - Sent at: {DateTimeOffset.FromUnixTimeMilliseconds(now).AddHours(3).ToString("yyyy-MM-dd hh:mm:ss.fff tt")}"); //cuz im in +0300 atm
}
public ServiceResponse SendMessage(KafkaSendMessageArgs args)
{
return(_service.SendToKafka(args));
}
