/// <summary>
/// 处理消息句柄接口
/// </summary>
/// <param name="args"></param>
/// <returns>
/// 返回值为true，则指示消息需要加入队列被重新消费处理
/// </returns>
public bool?ReceiveHandler(IncomingMsgEventArgs args)
{
if (args.IsDuplicate)
{
logger.Debug($"RCV {args.ConsumerTag} {args.TopicFullOrRoutingKey} {args.DeliveryTag} IsDuplicate, no process @{args.Body}");
return(default(bool?));
}
return(this.ProcessWrapperReturn(args));
}
private bool?Context_OnReceived(IncomingMsgEventArgs e)
{
bool?rst = false;
//if (!string.IsNullOrEmpty(e.TopicName) && handlerMap.ContainsKey(e.TopicName))
if (true)
{
// rst = handlerMap[e.TopicName].ReceiveHandler(e);
rst = handlerMap["DiagnosticResult"].ReceiveHandler(e);
}
else
{
logger.Error($"RCV routingkey[{e.TopicFullOrRoutingKey}] and topicname[{e.TopicName}] is not config the process handler");
rst = false; ////无法识别的消息直接忽略, 目前尚未考虑死信队列
}
return(rst);
}
private void _consumer_Received(object sender, BasicDeliverEventArgs e)
{
var args = new IncomingMsgEventArgs(e.RoutingKey, e.Body, e.Redelivered);
logger.Debug($"RCV {e.ConsumerTag} {e.RoutingKey} {e.DeliveryTag} @{args.Body}");
bool?rst = default(bool?);
args.ConsumerTag = e.ConsumerTag;
args.DeliveryTag = e.DeliveryTag;
rst = this.OnReceived(args);
if (!this.autoAck)
{
var model = ((IBasicConsumer)sender).Model;
try
{
if (!model.IsClosed && model.IsOpen)
{
if (rst.HasValue && rst.Value)
{
model.BasicReject(e.DeliveryTag, false); ////当确定调用业务方法处理消息失败时，不会重新加入队列，为死信做准备
logger.Debug($"{ e.RoutingKey} {e.DeliveryTag} reject to quque");
}
else
{
model.BasicAck(e.DeliveryTag, false);
}
}
}
catch (Exception ex)
{
logger.Error("model[{model.ChannelNumber}] ack {e.RoutingKey} message[{e.DeliveryTag}] exception");
logger.Error(ex);
}
}
}
/// <summary> /// 处理消息句柄接口 /// </summary> /// <param name="args"></param> /// <returns> /// 当Protocol是AMQP时，返回值为true，则指示消息需要加入队列被重新消费处理 /// 默认请返回 false 表示消息处理完成，不需要重复处理 /// </returns> protected abstract bool?Process(IncomingMsgEventArgs args);