protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
_logger.LogInformation("Booking Processing Service Started");
// Magic line to yield control of this background service back to the rest of the startup process
await Task.Yield();
// Create new consumer and producer
var kafkaConsumerService = new KafkaConsumerService(_logger, _consumerConfig, KafkaTopics.TOPIC_BOOKING_REQUEST);
var kafkaProducerService = new KafkaProducerService(_logger, _producerConfig, KafkaTopics.TOPIC_BOOKING_CONFIRMATION);
while (!stoppingToken.IsCancellationRequested)
{
try
{
// Wait for a new booking request
var bookingRequest = kafkaConsumerService.WaitAndRead <MovieBooking>(stoppingToken);
if (bookingRequest != null)
{
_logger.LogInformation($"Processing new booking: {bookingRequest}");
// Create new booking confirmation based on a request
var bookingConfirmation = new BookingConfirmation(bookingRequest);
// Publish a booking confirmation to a Kafka stream
await kafkaProducerService.Write(bookingConfirmation);
}
}
catch (Exception e)
{
_logger.LogError($"Error in processing : {e.Message}");
}
}
}
public async Task <ActionResult> PostAsync([FromBody] MovieBooking booking)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
_logger.LogInformation($"New movie booking received: {booking}");
// Publish a new booking to the stream
var kafkaProducerService = new KafkaProducerService(_logger, _config, KafkaTopics.TOPIC_BOOKING_REQUEST);
await kafkaProducerService.Write(booking);
return(Ok("Your booking is being processed"));
}
