protected virtual void ManageConsumersLoop(CancellationToken token)
{
while (!token.IsCancellationRequested)
{
if (!this._isStopped)
{
QueueInfo queueInfo = this.CreateQueueInfo();
this._scalingAmount = this._consumerCountManager.GetScalingAmount(queueInfo, this._consumerWorkersCount);
int scalingAmount = this._scalingAmount;
for (var i = 1; i <= scalingAmount; i++)
{
this._scalingAmount--;
this._consumerWorkersCount++;
var thread = new Thread(() =>
{
try
{
using (IQueueConsumerWorker consumerWorker = this.CreateNewConsumerWorker(token))
{
consumerWorker.DoConsume();
}
}
catch (Exception exception)
{
System.Diagnostics.Trace.TraceError("DevWeek.Architecture.MessageQueuing.RabbitMQConsumer", exception.ToString(), "QueueName", this.QueueName);
}
finally
{
this._consumerWorkersCount--;
this._scalingAmount++;
}
})
{
IsBackground = true
};
thread.Start();
}
}
Thread.Sleep(this._consumerCountManager.AutoscaleFrequency);
}
}
protected async virtual Task ManageConsumersLoopAsync(CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested)
{
var queueInfo = CreateQueueInfo();
lock (_scalingLock)
{
_scalingAmount = _consumerCountManager.GetScalingAmount(queueInfo, _consumerWorkersCount);
for (var i = 1; i <= _scalingAmount; i++)
{
Task.Factory.StartNew(async() =>
{
try
{
Interlocked.Decrement(ref _scalingAmount);
Interlocked.Increment(ref _consumerWorkersCount);
using (IQueueConsumerWorker consumerWorker = CreateNewConsumerWorker())
{
await consumerWorker.DoConsumeAsync(cancellationToken).ConfigureAwait(false);
}
}
catch (Exception exception)
{
Interlocked.Increment(ref _scalingAmount);
Interlocked.Decrement(ref _consumerWorkersCount);
_errorLogger?.LogError("RabbitMQ.AdvancedConsumer", exception.ToString(),
"QueueName", _queueName);
}
}, cancellationToken);
}
}
await Task.Delay(_consumerCountManager.AutoscaleFrequency, cancellationToken).ConfigureAwait(false);
}
}
