public void Subscribe(string productId, string topic, Func<BasicDeliverEventArgs, bool> action, SubscribeOptions options = null)
{
this.Subscribe_internal<object>(productId, topic, false, (body, message) => action(message), options);
}
void Subscribe_internal<T>(string productId, string topic, bool hasReloveBody, Func<T, BasicDeliverEventArgs, bool> action, SubscribeOptions options = null)
{
options = options ?? SubscribeOptions.Default;
var queueName = topic;
var channel = _CacheManager.GetChannel(productId, topic, hasSub: true);
if (options.Model == MessageModel.Broadcasting)
{
var ip = Aquirrel.Tools.LocalIp.GetLocalIPV4() ?? System.Net.Dns.GetHostName();
var fanoutQueueName = ip + "." + productId + "." + topic + "." + DateTime.UtcNow.Ticks;
channel.QueueDeclare(queue: fanoutQueueName);
channel.QueueBind(fanoutQueueName, topic, "", null);
queueName = fanoutQueueName;
}
var consumer = new EventingBasicConsumer(channel);
consumer.Shutdown += (obj, ea) =>
{
_logger.LogError($"eventbus.consumer.shutdown;{Environment.NewLine}{productId}-{topic}-{ea.ToJson()}");
};
channel.BasicQos(0, (ushort)options.BasicQos, false);
var tx = typeof(T) == typeof(string);
consumer.Received += (obj, ea) =>
{
var isSuccess = false;
try
{
if (hasReloveBody)
{
var body = Encoding.UTF8.GetString(ea.Body);
if (tx)
isSuccess = action((T)((object)body), ea);
else
{
var msg = body.ToJson<T>();
isSuccess = action(msg, ea);
}
}
else
{
isSuccess = action(default(T), ea);
}
}
catch (Exception ex)
{
object mid = null;
ea.BasicProperties?.Headers.TryGetValue("mid", out mid);
_logger.LogError(ex, $"eventbus.subscribe.consumer.exception;{Environment.NewLine}{productId}-{topic}-" +
$"{{mid:{mid},RoutingKey:{ea.RoutingKey},ConsumerTag:{ea.ConsumerTag},DeliveryTag:{ea.DeliveryTag},Exchange:{ea.Exchange}}}");
}
finally
{
try
{
if (isSuccess)
{
consumer.Model.BasicAck(ea.DeliveryTag, false);
}
else
{
consumer.Model.BasicNack(ea.DeliveryTag, false, options.FailMesaageReQueue);
}
}
catch { }
}
};
_logger.LogInformation($"eventbus.subscribe;{productId}-{queueName}");
channel.BasicConsume(queueName, false, consumer);
}
/// <summary>
/// 消费者订阅
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="productId"></param>
/// <param name="topic">集群消费：queuename;广播消费:exchange</param>
/// <param name="action"></param>
/// <param name="options"></param>
public void Subscribe<T>(string productId, string topic, Func<T, bool> action, SubscribeOptions options = null)
{
this.Subscribe_internal<T>(productId, topic, true, (body, message) => action(body), options);
}
