public void Publish(IntegrationEvent @event)
{
if (!_persisterConnection.IsConnected)
{
_persisterConnection.TryConnect();
}
var policy = RetryPolicy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(5, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
{
_logger.LogWarning(ex.ToString());
});
using (var channel = _persisterConnection.CreateModel())
{
var eventName = @event.GetType()
.Name;
channel.ExchangeDeclare(exchange: BROKER_NAME,
type: "direct");
var message = JsonConvert.SerializeObject(@event);
var body = Encoding.UTF8.GetBytes(message);
policy.Execute(() =>
{
channel.BasicPublish(exchange: BROKER_NAME,
routingKey: eventName,
basicProperties: null,
body: body);
});
}
}
/// <summary>
/// 处理事件已删除事件
/// </summary>
private void SubscriptionsManager_OnEventRemoved(object sender, string eventName)
{
//建立连接
if (!persisterConnection.IsConnected)
{
persisterConnection.TryConnect();
}
using (var channel = persisterConnection.CreateModel()) {
channel.QueueUnbind(queue: queueName, exchange: BROKER_NAME, routingKey: eventName);
//没有事件订阅者
if (subscriptionsManager.IsEmpty)
{
queueName = "";
consumerChannel.Close();
}
}
}
private void _subsManager_OnEventRemoved(object sender, string eventName)
{
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
using (var channel = _persistentConnection.CreateModel())
{
channel.QueueUnbind(queue: _queueName,
exchange: BROKER_NAME,
routingKey: eventName);
if (_subsManager.IsEmpty)
{
_queueName = string.Empty;
_consumerChannel.Close();
}
}
}
private void SubsManager_OnEventRemoved(object sender, string eventName)
{
if (!_persister.IsConnected)
{
_persister.TryConnect();
}
using (var channel = _persister.CreateModel())
{
channel.QueueUnbind(_queueName, BROKER_NAME, eventName);
if (!_subscriptionManager.IsEmpty)
{
return;
}
_queueName = string.Empty;
_consumerChannel.Close();
}
}