public UseCaseHandler <M> FromResult <M>(
NextAction <M> action, OnCompleteCallback <M> onComplete = null, OnStartCallback onStart = null,
OnErrorCallback onError = null)
{
M result = default;
var nextHandler = new UseCaseHandler <M>();
nextHandler.ExecutingTask = ExecutingTask?.ContinueWith(t =>
{
onStart?.Invoke();
try
{
result = action.Invoke(Result);
onComplete?.Invoke(result);
}
catch (Exception e)
{
onError?.Invoke(e);
}
nextHandler.Result = result;
});
return(nextHandler);
}
public void Connect()
{
if (this.connection != null && this.connection.IsOpen)
{
this.connection.Close();
}
var factory = new ConnectionFactory()
{
HostName = this.BrokerHostname,
UserName = this.BrokerUsername,
Password = this.BrokerPassword,
Port = this.BrokerPort
};
this.connection = factory.CreateConnection();
var rmqChannel = this.connection.CreateModel();
rmqChannel.ExchangeDeclare(exchange: "shift_control_exchange", type: "fanout");
var queueName = rmqChannel.QueueDeclare().QueueName;
rmqChannel.QueueBind(queue: queueName,
exchange: "shift_control_exchange",
routingKey: "shift_control_key");
var consumer = new EventingBasicConsumer(rmqChannel);
consumer.Received += (model, ea) =>
{
var body = ea.Body;
var data = Encoding.UTF8.GetString(body);
JObject control_message = JObject.Parse(data);
if (ea.BasicProperties.CorrelationId == "links_data")
{
var is_master = (bool)control_message["is_master"];
var routing_key = (string)control_message["routing_key"];
if (is_master && !string.IsNullOrWhiteSpace(routing_key))
{
if (this.StartingUp)
{
this.StartingUp = false;
this.TopologyRoutingKey = routing_key;
OnStartCallback?.Invoke(routing_key);
}
if (routing_key != this.TopologyRoutingKey)
{
this.TopologyRoutingKey = routing_key;
OnTopologyQueueChangeCallback?.DynamicInvoke(routing_key);
}
}
}
};
rmqChannel.BasicConsume(queue: queueName, consumer: consumer, autoAck: true);
}