private async Task SynchronizeSubscriptionsAsync()
{
_logger.Info <ManagedMqttClient>(nameof(ManagedMqttClient), "Synchronizing subscriptions");
List <TopicFilter> subscriptions;
List <string> unsubscriptions;
await _subscriptionsSemaphore.WaitAsync().ConfigureAwait(false);
try
{
subscriptions = _subscriptions.Select(i => new TopicFilter(i.Key, i.Value)).ToList();
unsubscriptions = new List <string>(_unsubscriptions);
_unsubscriptions.Clear();
_subscriptionsNotPushed = false;
}
finally
{
_subscriptionsSemaphore.Release();
}
if (!subscriptions.Any() && !unsubscriptions.Any())
{
return;
}
try
{
if (subscriptions.Any())
{
await _mqttClient.SubscribeAsync(subscriptions).ConfigureAwait(false);
}
if (unsubscriptions.Any())
{
await _mqttClient.UnsubscribeAsync(unsubscriptions).ConfigureAwait(false);
}
}
catch (Exception exception)
{
_logger.Warning <ManagedMqttClient>(exception, "Synchronizing subscriptions failed.");
_subscriptionsNotPushed = true;
SynchronizingSubscriptionsFailed?.Invoke(this, EventArgs.Empty);
}
}
private async Task SynchronizeSubscriptionsAsync()
{
_logger.Info(nameof(MqttManagedClient), "Synchronizing subscriptions");
List <TopicFilter> subscriptions;
HashSet <string> unsubscriptions;
lock (_subscriptions)
{
subscriptions = _subscriptions.Select(i => new TopicFilter(i.Key, i.Value)).ToList();
unsubscriptions = new HashSet <string>(_unsubscriptions);
_unsubscriptions.Clear();
_subscriptionsNotPushed = false;
}
if (!subscriptions.Any() && !unsubscriptions.Any())
{
return;
}
try
{
if (unsubscriptions.Any())
{
await _mqttClient.UnsubscribeAsync(unsubscriptions).ConfigureAwait(false);
}
if (subscriptions.Any())
{
await _mqttClient.SubscribeAsync(subscriptions).ConfigureAwait(false);
}
}
catch (Exception exception)
{
_logger.Warning(exception, "Synchronizing subscriptions failed.");
_subscriptionsNotPushed = true;
SynchronizingSubscriptionsFailed?.Invoke(this, new MqttManagedProcessFailedEventArgs(exception));
}
}
