public void Publish(IntegrationMessage message)
{
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
var policy = Policy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)),
(ex, time) =>
{
_logger.LogWarning(ex,
"Could not publish event: {EventId} after {Timeout}s ({ExceptionMessage})", message.Id,
$"{time.TotalSeconds:n1}", ex.Message);
});
var eventName = message.GetType().Name;
_logger.LogTrace("Creating RabbitMQ channel to publish event: {EventId} ({EventName})", message.Id,
eventName);
using (var channel = _persistentConnection.CreateModel())
{
_logger.LogTrace("Declaring RabbitMQ exchange to publish event: {EventId}", message.Id);
channel.ExchangeDeclare(BROKER_NAME, "direct");
var messageSerialized = JsonConvert.SerializeObject(message);
var body = Encoding.UTF8.GetBytes(messageSerialized);
policy.Execute(() =>
{
var properties = channel.CreateBasicProperties();
properties.DeliveryMode = 2; // persistent
_logger.LogTrace("Publishing event to RabbitMQ: {EventId}", message.Id);
channel.BasicPublish(
BROKER_NAME,
eventName,
true,
properties,
body);
});
}
}
public static string GetMessageName(this IntegrationMessage?message) => message?.GetType().Name ?? FallBackMessageName;
public string PackAsJson(IntegrationMessage message) => JsonSerializer.Serialize(message, message.GetType());