public Task ProceedUnsubscription(MqttUnsubscriptionInterceptorContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (string.IsNullOrWhiteSpace(context.ClientId))
{
throw new ArgumentNullException(nameof(context.ClientId));
}
if (string.IsNullOrWhiteSpace(context.Topic))
{
throw new ArgumentNullException(nameof(context.Topic));
}
// Save unsubscription to the database
var eventLog = new EventLog
{
EventType = EventType.Unsubscription,
EventDetails = $"Unsubscription: ClientId = {context.ClientId}, Topic = {context.Topic}."
};
this.eventLogQueue.Enqueue(eventLog);
return(Task.CompletedTask);
}
public Task InterceptUnsubscriptionAsync(MqttUnsubscriptionInterceptorContext context)
{
try
{
var sessionItems = (PythonDictionary)context.SessionItems[MqttServerConnectionValidator.WrappedSessionItemsKey];
var pythonContext = new PythonDictionary
{
{ "client_id", context.ClientId },
{ "session_items", sessionItems },
{ "topic", context.Topic },
{ "accept_unsubscription", context.AcceptUnsubscription },
{ "close_connection", context.CloseConnection }
};
_pythonScriptHostService.InvokeOptionalFunction("on_intercept_unsubscription", pythonContext);
context.AcceptUnsubscription = (bool)pythonContext["accept_unsubscription"];
context.CloseConnection = (bool)pythonContext["close_connection"];
}
catch (Exception exception)
{
_logger.LogError(exception, "Error while intercepting unsubscription.");
}
return(Task.CompletedTask);
}
public async Task InterceptUnsubscriptionAsync(MqttUnsubscriptionInterceptorContext context)
{
try
{
var repositoryGrain = clusterClient.GetGrain <IMqttRepositoryGrain>(0);
await repositoryGrain.ProceedUnsubscription(context);
}
catch (Exception ex)
{
this.logger.Error("An error occurred: {@ex}.", ex);
}
}
public Task InterceptUnsubscriptionAsync(MqttUnsubscriptionInterceptorContext context)
{
try
{
_logger.LogInformation($"Received unsubscribe request from '{context.ClientId}' for topic: '{context.Topic}'");
context.AcceptUnsubscription = true;
}
catch (Exception exception)
{
_logger.LogError(exception, $"Error while handling unsubscribe request from '{context.ClientId}' for topic '{context.Topic}'");
}
return(Task.CompletedTask);
}
async Task <MqttUnsubscriptionInterceptorContext> InterceptUnsubscribe(string topicFilter)
{
var interceptor = _options.UnsubscriptionInterceptor;
if (interceptor == null)
{
return(null);
}
var context = new MqttUnsubscriptionInterceptorContext
{
ClientId = _clientSession.ClientId,
Topic = topicFilter,
SessionItems = _clientSession.Items
};
await interceptor.InterceptUnsubscriptionAsync(context).ConfigureAwait(false);
return(context);
}
public Task InterceptUnsubscriptionAsync(MqttUnsubscriptionInterceptorContext context)
{
return(Task.FromResult(context.AcceptUnsubscription = true));
}
public async Task InterceptUnsubscriptionAsync(MqttUnsubscriptionInterceptorContext context)
{
context.AcceptUnsubscription = true;
}
public Task InterceptUnsubscriptionAsync(MqttUnsubscriptionInterceptorContext context)
{
LogToScreen("MQTT: Client " + context.ClientId + " unsubscribed from: " + context.Topic + Environment.NewLine);
context.AcceptUnsubscription = true;
return(null);
}
public async Task InterceptUnsubscriptionAsync(MqttUnsubscriptionInterceptorContext context)
{
await Task.FromResult(context.CloseConnection = false);
}
