public MessageQueueConsumer(
RabbitMqProvider rabbitMqProvider,
// ReSharper disable once SuggestBaseTypeForParameter
ILogger <MessageQueueConsumer> logger,
IOptions <QueueOptions> queueOptionsMonitor,
IServiceProvider sp
)
{
this.rabbitMqProvider = rabbitMqProvider;
var queueOptions = queueOptionsMonitor.Value;
queueName = rabbitMqProvider.Channel.QueueDeclare(
queueOptions.QueueName,
queueOptions.Durable,
queueOptions.Exclusive,
queueOptions.AutoDelete
).QueueName;
var handlers = bindHandlers();
var consumer = new AsyncEventingBasicConsumer(rabbitMqProvider.Channel);
consumer.Received += async(sender, @event) => {
try {
logger.LogDebug("Received event {eventName}", @event.RoutingKey);
using var scope = sp.CreateScope();
var tasks = new List <Task>();
foreach (var(handlerType, handlerMethod, parser) in handlers[@event.RoutingKey])
{
var handlerClass = scope.ServiceProvider.GetRequiredService(handlerType);
tasks.Add(
(Task)handlerMethod.Invoke(handlerClass,
// ReSharper disable once CoVariantArrayConversion
new[] { parser.ParseFrom(@event.Body.ToArray()) })
);
}
await Task.WhenAll(tasks);
rabbitMqProvider.Channel.BasicAck(@event.DeliveryTag, false);
logger.LogDebug("Handled event {eventName}", @event.RoutingKey);
}
catch (Exception e) {
logger.LogError(
"An unhandled exception occurred while processing {eventName}:\n{e}",
@event.RoutingKey,
e
);
}
};
rabbitMqProvider.Channel.BasicConsume(queueName, false, consumer);
}
public MessageQueuePublisher(RabbitMqProvider rabbitMqProvider, ILogger <RabbitMqProvider> logger)
{
this.rabbitMqProvider = rabbitMqProvider;
this.logger = logger;
}
