public void Subscribe(IMessageConsumer consumer)
{
_consumerType = consumer.GetType();
var attr = _consumerType.GetCustomAttribute <MessageHandlerAttribute>(inherit: true);
var exchange = attr.Exchange;
var routingKey = attr.RoutingKey;
var queueName = $"{exchange}.{routingKey}";
_channel.ExchangeDeclare(exchange,
ExchangeType.Direct,
true,
false,
new Dictionary <string, object>()
{
{ "x-message-ttl", 0 }
});
_channel.QueueDeclare(queueName,
durable: true,
exclusive: false,
autoDelete: false,
arguments: null);
_channel.QueueBind(queueName, exchange, routingKey);
_channel.BasicQos(0, 10, false);
var basicConsumer = new EventingBasicConsumer(_channel);
basicConsumer.Received += async(sender, e) =>
{
var body = e.Body.ToArray();
var message = Encoding.UTF8.GetString(body);
try
{
using var scope = _serviceScopeFactory.CreateScope();
var consumers = scope.ServiceProvider.GetServices <IMessageConsumer>()
.Where(x => x.GetType() == _consumerType).ToList();
consumers.ForEach(async consumer => {
var handleResult = await consumer.ConsumeAsync(message);
});
_channel.BasicAck(e.DeliveryTag, true);
}
catch (Exception exception)
{
_logger.Fatal(nameof(Subscribe), exception);
throw;
}
};
_channel.BasicConsume(queueName, false, basicConsumer);
}
