protected override void OnInit()
{
OnDispose();
_senders = new List <RedisMQConnection>();
if (Config != null)
{
if (Config.ClientQueues != null)
{
_clientQueues = Config.ClientQueues.FirstOf(
c => c.EnvironmentName?.SplitAndTrim(",").Contains(Core.EnvironmentName) == true && c.MachineName?.SplitAndTrim(",").Contains(Core.MachineName) == true,
c => c.EnvironmentName?.SplitAndTrim(",").Contains(Core.EnvironmentName) == true,
c => c.MachineName?.SplitAndTrim(",").Contains(Core.MachineName) == true,
c => c.EnvironmentName.IsNullOrWhitespace());
}
_senderOptions = Config.RequestOptions?.ClientSenderOptions;
_receiverOptions = Config.ResponseOptions?.ClientReceiverOptions;
_receiverOptionsTimeout = TimeSpan.FromSeconds(_receiverOptions?.TimeoutInSec ?? 20);
UseSingleResponseQueue = _receiverOptions?.Parameters?[ParameterKeys.SingleResponseQueue].ParseTo(true) ?? true;
if (_clientQueues?.SendQueues?.Any() == true)
{
foreach (var queue in _clientQueues.SendQueues)
{
Core.Log.LibVerbose("New Producer from QueueClient");
var redisConnection = new RedisMQConnection(queue);
_senders.Add(redisConnection);
}
}
if (_clientQueues?.RecvQueue != null && !SendOnly)
{
_receiverConnection = new RedisMQConnection(_clientQueues.RecvQueue);
if (!UseSingleResponseQueue)
{
_receiverConnection.Name += "-" + Core.InstanceIdString;
Core.Log.InfoBasic("Using custom response queue: {0}", _receiverConnection.Name);
}
_receiverConnection.SubscribeAsync(new Action <RedisChannel, RedisValue>(ProcessReceivedMessage)).WaitAsync();
}
}
Core.Status.Attach(collection =>
{
if (_senders != null)
{
for (var i = 0; i < _senders.Count; i++)
{
collection.Add("Sender Path: {0}".ApplyFormat(i), _senders[i].Route);
}
}
if (_clientQueues?.RecvQueue != null)
{
collection.Add("Receiver Path", _clientQueues.RecvQueue.Route);
}
});
}
protected override async Task OnListenerTaskStartAsync(CancellationToken token)
{
_token = token;
_connection = new RedisMQConnection(Connection);
await _connection.SubscribeAsync(_messageHandlerDelegate).ConfigureAwait(false);
_monitorTask = Task.Run(_monitorDelegate, _token);
await token.WhenCanceledAsync().ConfigureAwait(false);
OnDispose();
await _monitorTask.ConfigureAwait(false);
}
protected override void OnDispose()
{
if (_senders != null)
{
_senders.Clear();
_senders = null;
}
if (_receiverConnection is null)
{
return;
}
_receiverConnection.UnsubscribeAsync().WaitAsync();
_receiverConnection = null;
}
protected override void OnDispose()
{
if (_connection is null)
{
return;
}
try
{
_connection.UnsubscribeAsync().WaitAsync();
}
catch
{
// ignored
}
_connection = null;
}
private async Task MonitorProcess()
{
while (!_token.IsCancellationRequested)
{
try
{
if (Interlocked.CompareExchange(ref _exceptionSleep, 0, 1) == 1)
{
OnDispose();
Core.Log.Warning("An exception has been thrown, the listener has been stopped for {0} seconds.", Config.RequestOptions.ServerReceiverOptions.SleepOnExceptionInSec);
await Task.Delay(Config.RequestOptions.ServerReceiverOptions.SleepOnExceptionInSec * 1000, _token).ConfigureAwait(false);
_connection = new RedisMQConnection(Connection);
await _connection.SubscribeAsync(_messageHandlerDelegate).ConfigureAwait(false);
Core.Log.Warning("The listener has been resumed.");
}
if (Counters.CurrentMessages >= Config.RequestOptions.ServerReceiverOptions.MaxSimultaneousMessagesPerQueue)
{
OnDispose();
Core.Log.Warning("Maximum simultaneous messages per queue has been reached, the message needs to wait to be processed, consider increase the MaxSimultaneousMessagePerQueue value, CurrentValue={0}.", Config.RequestOptions.ServerReceiverOptions.MaxSimultaneousMessagesPerQueue);
while (!_token.IsCancellationRequested && Counters.CurrentMessages >= Config.RequestOptions.ServerReceiverOptions.MaxSimultaneousMessagesPerQueue)
{
await Task.Delay(500, _token).ConfigureAwait(false);
}
_connection = new RedisMQConnection(Connection);
await _connection.SubscribeAsync(_messageHandlerDelegate).ConfigureAwait(false);
Core.Log.Warning("The listener has been resumed.");
}
await Task.Delay(1000, _token).ConfigureAwait(false);
}
catch (TaskCanceledException) { }
catch (Exception ex)
{
Core.Log.Write(ex);
if (!_token.IsCancellationRequested)
{
await Task.Delay(2000, _token).ConfigureAwait(false);
}
}
}
}
