public async void OnMissingTopic(IMissingTopicNotification notification)
{
//check our user has credentials to create a new topic
//open up a control session
var session = Diffusion.Sessions.Principal("admin").Password("password").Open("ws://localhost:8080");
var topicControl = session.TopicControl;
List <String> strL = new List <String>
{
SessionProperty.PRINCIPAL
};
session.ClientControl.GetSessionProperties(notification.SessionId, strL, new PropCallback());
if (vals != null && vals.Count > 0)
{
switch (vals[SessionProperty.PRINCIPAL])
{
case "admin":
await topicControl.AddTopicAsync(notification.TopicPath, TopicType.JSON);
notification.Proceed();
break;
default:
notification.Cancel();
break;
}
}
session.Close();
}
/// <summary>
/// Called when a client session requests a topic that does not exist, and the topic path belongs to part of
/// the topic tree for which this handler was registered.
///
/// The handler implementation should take the appropriate action (for example, create the topic), and then
/// call IMissingTopicNotification.Proceed on the supplied notification. This allows the client request to
/// continue and successfully resolve against the topic if it was created.
///
/// A handler should always call Proceed() otherwise resources will continue to be reserved on the server
/// and the client's request will not complete.
/// </summary>
/// <param name="notification"></param>
public override void OnMissingTopic(IMissingTopicNotification notification)
{
var topicPath = notification.TopicPath;
//TODO: TopicType.DELEGATED is deprecated.
theTopicControl.AddTopic(topicPath,
topicPath.StartsWith("topicroot/SV") ? TopicType.SINGLE_VALUE : TopicType.DELEGATED,
notification, theProceedCallback);
}
/// <summary>
/// Called when a client session requests a topic that does not exist, and the topic path belongs to part of
/// the topic tree for which this handler was registered.
///
/// The handler implementation should take the appropriate action (for example, create the topic), and then call
/// IMissingTopicNotification.Proceed on the supplied notification. This allows the client request to continue
/// and successfully resolve against the topic if it was created.
///
/// A handler should always call Proceed() otherwise resources will continue to be reserved on the server and the
/// client's request will not complete.
/// </summary>
/// <param name="notification">The client notification object.</param>
void IMissingTopicHandler.OnMissingTopic(IMissingTopicNotification notification)
{
onMissingTopic.SetResult(notification);
}
/// <summary>
/// Called when a client session requests a topic that does not exist, and the topic path belongs to part of
/// the topic tree for which this handler was registered.
///
/// The handler implementation should take the appropriate action (for example, create the topic), and then
/// call IMissingTopicNotification.Proceed on the supplied notification. This allows the client request to
/// continue and successfully resolve against the topic if it was created.
///
/// A handler should always call Proceed() otherwise resources will continue to be reserved on the server
/// and the client's request will not complete.
/// </summary>
/// <param name="notification">The client notification object.</param>
void IMissingTopicHandler.OnMissingTopic( IMissingTopicNotification notification ) {
onMissingTopic.SetResult( notification );
}
