/// <summary>
/// Wrapper to assure an MQTT connection
/// </summary>
/// <param name="logger"></param>
/// <param name="mqttFactory"></param>
/// <param name="mqttConfig"></param>
public AssuredMqttConnection(
ILogger <AssuredMqttConnection> logger,
IMqttFactoryWrapper mqttFactory,
IOptions <MqttConfiguration> mqttConfig)
{
_logger = logger;
_logger.LogDebug("MQTT initiating connection");
_connectionTask = Task.Run(() => ConnectAsync(mqttConfig.Value, mqttFactory));
}
private async Task ConnectAsync(MqttConfiguration mqttConfig, IMqttFactoryWrapper mqttFactory)
{
_logger.LogDebug("Connecting to MQTT broker at {Host}:{Port}/{UserName}",
mqttConfig.Host, mqttConfig.Port, mqttConfig.UserName);
var clientOptions = new ManagedMqttClientOptionsBuilder()
.WithAutoReconnectDelay(TimeSpan.FromSeconds(5))
.WithClientOptions(new MqttClientOptionsBuilder()
.WithTcpServer(mqttConfig.Host, mqttConfig.Port)
.WithCredentials(mqttConfig.UserName, mqttConfig.Password))
.Build();
_mqttClient = mqttFactory.CreateManagedMqttClient();
_mqttClient.ConnectedHandler = new MqttClientConnectedHandlerDelegate(LogConnectedStatus);
_mqttClient.DisconnectedHandler = new MqttClientDisconnectedHandlerDelegate(LogDisconnectedStatus);
await _mqttClient.StartAsync(clientOptions);
_logger.LogDebug("MQTT client is ready");
}
