MqttModule.cs

using System;
using System.Threading.Tasks;
using Waher.Events;
using Waher.Runtime.Inventory;
using Waher.Things.Metering;
using Waher.Things.Ip;
using Waher.Things.Metering.NodeTypes;
 
namespace Waher.Things.Mqtt
{
    [Singleton]
    public class MqttModule : IModule
    {
        public async Task Start()
        {
            try
            {
                await this.CheckNode(MeteringTopology.Root);
            }
            catch (Exception ex)
            {
                Log.Exception(ex);
            }
        }
 
        private async Task CheckNode(INode Node)
        {
            foreach (INode Child in await Node.ChildNodes)
            {
                if (Child is MqttBrokerNode BrokerNode)
                    await BrokerNode.GetBroker(); // Makes sure it is initialized.
                else if (Child is IpHost || Child is NodeCollection)
                    await this.CheckNode(Child);
            }
        }
 
        public Task Stop()
        {
            return Task.CompletedTask;
        }
    }
}