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Add server events for subscribed and unsubscribed topics. Add pending messages count for connected clients.

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This commit is contained in:
Christian
2018-02-02 22:44:21 +01:00
parent a204d233f6
commit 59dcbf4c0c
12 changed files with 205 additions and 74 deletions
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Frameworks/MQTTnet.NetStandard/Server/MqttClientSubscriptionsManager.cs
+23 -13
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@@ -8,19 +8,22 @@ using MQTTnet.Protocol;
namespace MQTTnet.Server
{
public sealed class MqttClientSubscriptionsManager
public sealed class MqttClientSubscriptionsManager : IDisposable
{
private readonly SemaphoreSlim _semaphore = new SemaphoreSlim(1, 1);
private readonly Dictionary<string, MqttQualityOfServiceLevel> _subscriptions = new Dictionary<string, MqttQualityOfServiceLevel>();
private readonly IMqttServerOptions _options;
private readonly string _clientId;
public MqttClientSubscriptionsManager(IMqttServerOptions options, string clientId)
{
_options = options ?? throw new ArgumentNullException(nameof(options));
_clientId = clientId ?? throw new ArgumentNullException(nameof(clientId));
}
public Action<string, TopicFilter> TopicSubscribedCallback { get; set; }
public Action<string, string> TopicUnsubscribedCallback { get; set; }
public async Task<MqttClientSubscribeResult> SubscribeAsync(MqttSubscribePacket subscribePacket)
{
if (subscribePacket == null) throw new ArgumentNullException(nameof(subscribePacket));
@@ -54,6 +57,7 @@ namespace MQTTnet.Server
if (interceptorContext.AcceptSubscription)
{
_subscriptions[topicFilter.Topic] = topicFilter.QualityOfServiceLevel;
TopicSubscribedCallback?.Invoke(_clientId, topicFilter);
}
}
}
@@ -75,6 +79,7 @@ namespace MQTTnet.Server
foreach (var topicFilter in unsubscribePacket.TopicFilters)
{
_subscriptions.Remove(topicFilter);
TopicUnsubscribedCallback?.Invoke(_clientId, topicFilter);
}
}
finally
@@ -119,6 +124,22 @@ namespace MQTTnet.Server
}
}
public void Dispose()
{
_semaphore?.Dispose();
}
private static MqttSubscribeReturnCode ConvertToMaximumQoS(MqttQualityOfServiceLevel qualityOfServiceLevel)
{
switch (qualityOfServiceLevel)
{
case MqttQualityOfServiceLevel.AtMostOnce: return MqttSubscribeReturnCode.SuccessMaximumQoS0;
case MqttQualityOfServiceLevel.AtLeastOnce: return MqttSubscribeReturnCode.SuccessMaximumQoS1;
case MqttQualityOfServiceLevel.ExactlyOnce: return MqttSubscribeReturnCode.SuccessMaximumQoS2;
default: return MqttSubscribeReturnCode.Failure;
}
}
private MqttSubscriptionInterceptorContext InterceptSubscribe(TopicFilter topicFilter)
{
var interceptorContext = new MqttSubscriptionInterceptorContext(_clientId, topicFilter);
@@ -148,16 +169,5 @@ namespace MQTTnet.Server
QualityOfServiceLevel = effectiveQoS
};
}
private static MqttSubscribeReturnCode ConvertToMaximumQoS(MqttQualityOfServiceLevel qualityOfServiceLevel)
{
switch (qualityOfServiceLevel)
{
case MqttQualityOfServiceLevel.AtMostOnce: return MqttSubscribeReturnCode.SuccessMaximumQoS0;
case MqttQualityOfServiceLevel.AtLeastOnce: return MqttSubscribeReturnCode.SuccessMaximumQoS1;
case MqttQualityOfServiceLevel.ExactlyOnce: return MqttSubscribeReturnCode.SuccessMaximumQoS2;
default: return MqttSubscribeReturnCode.Failure;
}
}
}
}