public async Task Run()
{
var child = new ConsumerRunnerSlice
{
Channel = await Client.PullModel(),
Qos = Consumer.MinQos
};
if (isFirst)
{
isFirst = false;
child.Channel.Model.ExchangeDeclare(Consumer.EventBus.Exchange, "direct", true);
child.Channel.Model.QueueDeclare(Queue.Queue, true, false, false, null);
child.Channel.Model.QueueBind(Queue.Queue, Consumer.EventBus.Exchange, Queue.RoutingKey);
}
child.Channel.Model.BasicQos(0, Consumer.MinQos, false);
child.BasicConsumer = new EventingBasicConsumer(child.Channel.Model);
child.BasicConsumer.Received += async(ch, ea) =>
{
await Process(child, ea, 0);
};
child.BasicConsumer.ConsumerTag = child.Channel.Model.BasicConsume(Queue.Queue, Consumer.AutoAck, child.BasicConsumer);
child.NeedRestart = false;
Slices.Add(child);
NowQos += child.Qos;
StartTime = DateTimeOffset.UtcNow;
}
private async Task Process(ConsumerRunnerSlice consumerChild, BasicDeliverEventArgs ea)
{
try
{
await Consumer.Notice(ea.Body);
if (!Consumer.Config.AutoAck)
{
consumerChild.Channel.Model.BasicAck(ea.DeliveryTag, false);
}
}
catch (Exception exception)
{
Logger.LogError(exception.InnerException ?? exception, $"An error occurred in {Consumer.EventBus.Exchange}-{Queue}");
if (Consumer.Config.Reenqueue)
{
await Task.Delay(1000);
consumerChild.Channel.Model.BasicReject(ea.DeliveryTag, true);
}
else
{
consumerChild.NeedRestart = true;
}
}
}
private async Task Process(ConsumerRunnerSlice consumerChild, BasicDeliverEventArgs ea, int count)
{
if (count > 0)
{
await Task.Delay(count * 1000);
}
try
{
await Consumer.Notice(ea.Body);
if (!Consumer.AutoAck)
{
try
{
consumerChild.Channel.Model.BasicAck(ea.DeliveryTag, false);
}
catch
{
consumerChild.NeedRestart = true;
}
}
}
catch (Exception exception)
{
Logger.LogError(exception.InnerException ?? exception, $"An error occurred in {Consumer.EventBus.Exchange}-{Queue}");
if (Consumer.ErrorReject)
{
consumerChild.Channel.Model.BasicReject(ea.DeliveryTag, true);
}
else
{
if (count > 3)
{
consumerChild.NeedRestart = true;
}
else
{
await Process(consumerChild, ea, count + 1);
}
}
}
}
public async Task ExpandQos()
{
if (NowQos + Consumer.IncQos <= Consumer.MaxQos)
{
var child = new ConsumerRunnerSlice
{
Channel = await Client.PullModel(),
Qos = Consumer.IncQos
};
child.Channel.Model.BasicQos(0, Consumer.IncQos, false);
child.BasicConsumer = new EventingBasicConsumer(child.Channel.Model);
child.BasicConsumer.Received += async(ch, ea) =>
{
await Process(child, ea, 0);
};
child.BasicConsumer.ConsumerTag = child.Channel.Model.BasicConsume(Queue.Queue, Consumer.AutoAck, child.BasicConsumer);
child.NeedRestart = false;
Slices.Add(child);
NowQos += child.Qos;
StartTime = DateTimeOffset.UtcNow;
}
}
