internal async Task <MqttTopic> GetTopic(string[] Parts, int Index, bool CreateNew, MqttBroker Broker)
{
MqttTopic Topic;
lock (this.topics)
{
if (!this.topics.TryGetValue(Parts[Index], out Topic))
{
Topic = null;
}
}
if (Topic == null)
{
if (System.Guid.TryParse(Parts[Index].Replace('_', '-'), out Guid _))
{
return(null);
}
if (this.node.HasChildren)
{
foreach (INode Child in await this.node.ChildNodes)
{
if (Child is MqttTopicNode Topic2 && Topic2.LocalTopic == Parts[Index])
{
Topic = new MqttTopic(Topic2, Topic2.FullTopic, Parts[Index], null, Broker);
break;
}
}
}
MqttTopicNode Node = null;
if (Topic == null)
{
if (!CreateNew)
{
return(null);
}
StringBuilder sb = new StringBuilder();
int i;
for (i = 0; i < Index; i++)
{
sb.Append(Parts[i]);
sb.Append('/');
}
sb.Append(Parts[Index]);
string FullTopic = sb.ToString();
Node = new MqttTopicNode()
{
NodeId = await MeteringNode.GetUniqueNodeId(FullTopic),
LocalTopic = Parts[Index]
};
Topic = new MqttTopic(Node, FullTopic, Parts[Index], this, Broker);
}
lock (this.topics)
{
if (this.topics.ContainsKey(Parts[Index]))
{
Topic = this.topics[Parts[Index]];
}
else
{
this.topics[Parts[Index]] = Topic;
}
}
if (Node != null)
{
if (Node != Topic.Node)
{
await Node.DestroyAsync();
}
else
{
await this.node.AddAsync(Node);
}
}
}
Index++;
if (Parts.Length == Index)
{
return(Topic);
}
else
{
return(await Topic.GetTopic(Parts, Index, CreateNew, Broker));
}
}
public async Task <MqttTopic> GetTopic(string TopicString, bool CreateNew)
{
if (string.IsNullOrEmpty(TopicString))
{
return(null);
}
string[] Parts = TopicString.Split('/');
MqttTopic Topic;
lock (this.topics)
{
if (!this.topics.TryGetValue(Parts[0], out Topic))
{
Topic = null;
}
}
if (Topic == null)
{
if (System.Guid.TryParse(Parts[0].Replace('_', '-'), out Guid _))
{
return(null);
}
if (this.node.HasChildren)
{
foreach (INode Child in await this.node.ChildNodes)
{
if (Child is MqttTopicNode Topic2 && Topic2.LocalTopic == Parts[0])
{
Topic = new MqttTopic(Topic2, Parts[0], Parts[0], null, this);
break;
}
}
}
MqttTopicNode Node = null;
if (Topic == null)
{
if (!CreateNew)
{
return(null);
}
Node = new MqttTopicNode()
{
NodeId = await MeteringNode.GetUniqueNodeId(Parts[0]),
LocalTopic = Parts[0]
};
Topic = new MqttTopic(Node, Parts[0], Parts[0], null, this);
}
lock (this.topics)
{
if (this.topics.ContainsKey(Parts[0]))
{
Topic = this.topics[Parts[0]];
}
else
{
this.topics[Parts[0]] = Topic;
}
}
if (Node != null)
{
if (Node != Topic.Node)
{
await Node.DestroyAsync();
}
else
{
await this.node.AddAsync(Node);
}
}
}
if (Parts.Length == 1)
{
return(Topic);
}
else
{
return(await Topic.GetTopic(Parts, 1, CreateNew, this));
}
}